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Satallax---3.5.THM-Prf.s

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%------------------------------------------------------------------------------
% File     : Satallax---3.5
% Problem  : SEU590^1 : TPTP v9.2.0. Released v3.7.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : satallax -E eprover-ho -P picomus -M modes -p tstp -t %d %s

% Computer : n004.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Thu Oct  9 02:43:52 PM UTC 2025

% Result   : Theorem 233.84s 233.70s
% Output   : Proof 233.84s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :  114
%            Number of leaves      :  374
% Syntax   : Number of formulae    :  490 ( 257 unt;   0 typ; 108 def)
%            Number of atoms       : 14414 (3543 equ;   0 cnn)
%            Maximal formula atoms :  240 (  29 avg)
%            Number of connectives : 47071 (3467   ~;  35   |;   0   &;28425   @)
%                                         (  32 <=>;15028  =>;   0  <=;   0 <~>)
%            Maximal formula depth :  118 (  17 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  : 1704 (1704   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :  161 ( 158 usr; 148 con; 0-2 aty)
%                                         (  84  !!;   0  ??;   0 @@+;   0 @@-)
%            Number of variables   : 15342 ( 268   ^;15074   !;   0   ?;15342   :)

% Comments : 
%------------------------------------------------------------------------------
thf(ty_subset,type,
    subset: $i > $i > $o ).

thf(ty_eigen__2,type,
    eigen__2: $i ).

thf(ty_setunion,type,
    setunion: $i > $i ).

thf(ty_eigen__1,type,
    eigen__1: $i ).

thf(ty_eigen__0,type,
    eigen__0: $i ).

thf(ty_emptyset,type,
    emptyset: $i ).

thf(ty_eigen__3,type,
    eigen__3: $i ).

thf(ty_descr,type,
    descr: ( $i > $o ) > $i ).

thf(ty_nonempty,type,
    nonempty: $i > $o ).

thf(ty_dsetconstr,type,
    dsetconstr: $i > ( $i > $o ) > $i ).

thf(ty_powerset,type,
    powerset: $i > $i ).

thf(ty_omega,type,
    omega: $i ).

thf(ty_exu,type,
    exu: ( $i > $o ) > $o ).

thf(ty_prop2set,type,
    prop2set: $o > $i ).

thf(ty_set2prop,type,
    set2prop: $i > $o ).

thf(ty_in,type,
    in: $i > $i > $o ).

thf(ty_binunion,type,
    binunion: $i > $i > $i ).

thf(ty_setadjoin,type,
    setadjoin: $i > $i > $i ).

thf(h0,assumption,
    ! [X1: $i > $o,X2: $i] :
      ( ( X1 @ X2 )
     => ( X1 @ ( eps__0 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(eigendef_eigen__3,definition,
    ( eigen__3
    = ( eps__0
      @ ^ [X1: $i] :
          ~ ( ( in @ X1 @ eigen__2 )
           => ( in @ X1
              @ ( dsetconstr @ eigen__0
                @ ^ [X2: $i] : ( in @ X2 @ eigen__1 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[eigen__3])]) ).

thf(sP1,plain,
    ( sP1
  <=> ! [X1: $i,X2: $i] :
        ( ( subset @ X1 @ X2 )
       => ( in @ X1 @ ( powerset @ X2 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP1])]) ).

thf(sP2,plain,
    ( sP2
  <=> ( subset @ eigen__2 @ eigen__1 ) ),
    introduced(definition,[new_symbols(definition,[sP2])]) ).

thf(sP3,plain,
    ( sP3
  <=> ! [X1: $i,X2: $i > $o,X3: $i] :
        ( ( in @ X3 @ X1 )
       => ( ( X2 @ X3 )
         => ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP3])]) ).

thf(sP4,plain,
    ( sP4
  <=> ( in @ eigen__2 @ ( powerset @ eigen__0 ) ) ),
    introduced(definition,[new_symbols(definition,[sP4])]) ).

thf(sP5,plain,
    ( sP5
  <=> ! [X1: $i,X2: $i] :
        ( ( in @ X1 @ ( powerset @ eigen__0 ) )
       => ( ( in @ X2 @ X1 )
         => ( in @ X2 @ eigen__0 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP5])]) ).

thf(sP6,plain,
    ( sP6
  <=> ( in @ eigen__3 @ eigen__2 ) ),
    introduced(definition,[new_symbols(definition,[sP6])]) ).

thf(sP7,plain,
    ( sP7
  <=> ! [X1: $i,X2: $i,X3: $i] :
        ( ( in @ X2 @ ( powerset @ X1 ) )
       => ( ( in @ X3 @ X2 )
         => ( in @ X3 @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP7])]) ).

thf(sP8,plain,
    ( sP8
  <=> ( in @ eigen__3 @ eigen__1 ) ),
    introduced(definition,[new_symbols(definition,[sP8])]) ).

thf(sP9,plain,
    ( sP9
  <=> ( sP6
     => ( in @ eigen__3
        @ ( dsetconstr @ eigen__0
          @ ^ [X1: $i] : ( in @ X1 @ eigen__1 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP9])]) ).

thf(sP10,plain,
    ( sP10
  <=> ( ( subset @ eigen__2 @ eigen__0 )
     => sP4 ) ),
    introduced(definition,[new_symbols(definition,[sP10])]) ).

thf(sP11,plain,
    ( sP11
  <=> ( in @ eigen__3
      @ ( dsetconstr @ eigen__0
        @ ^ [X1: $i] : ( in @ X1 @ eigen__1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP11])]) ).

thf(sP12,plain,
    ( sP12
  <=> ( sP8
     => sP11 ) ),
    introduced(definition,[new_symbols(definition,[sP12])]) ).

thf(sP13,plain,
    ( sP13
  <=> ! [X1: $i] :
        ( ( in @ X1 @ eigen__2 )
       => ( in @ X1
          @ ( dsetconstr @ eigen__0
            @ ^ [X2: $i] : ( in @ X2 @ eigen__1 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP13])]) ).

thf(sP14,plain,
    ( sP14
  <=> ( sP4
     => ( sP6
       => ( in @ eigen__3 @ eigen__0 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP14])]) ).

thf(sP15,plain,
    ( sP15
  <=> ( in @ eigen__2 @ ( powerset @ eigen__1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP15])]) ).

thf(sP16,plain,
    ( sP16
  <=> ( sP6
     => sP8 ) ),
    introduced(definition,[new_symbols(definition,[sP16])]) ).

thf(sP17,plain,
    ( sP17
  <=> ! [X1: $i] :
        ( sP15
       => ( ( in @ X1 @ eigen__2 )
         => ( in @ X1 @ eigen__1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP17])]) ).

thf(sP18,plain,
    ( sP18
  <=> ( subset @ eigen__2 @ eigen__0 ) ),
    introduced(definition,[new_symbols(definition,[sP18])]) ).

thf(sP19,plain,
    ( sP19
  <=> ! [X1: $i] :
        ( ! [X2: $i] :
            ( ( in @ X2 @ eigen__2 )
           => ( in @ X2 @ X1 ) )
       => ( subset @ eigen__2 @ X1 ) ) ),
    introduced(definition,[new_symbols(definition,[sP19])]) ).

thf(sP20,plain,
    ( sP20
  <=> ( subset @ eigen__2
      @ ( dsetconstr @ eigen__0
        @ ^ [X1: $i] : ( in @ X1 @ eigen__1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP20])]) ).

thf(sP21,plain,
    ( sP21
  <=> ( ( in @ eigen__3 @ eigen__0 )
     => sP12 ) ),
    introduced(definition,[new_symbols(definition,[sP21])]) ).

thf(sP22,plain,
    ( sP22
  <=> ( sP2
     => sP15 ) ),
    introduced(definition,[new_symbols(definition,[sP22])]) ).

thf(sP23,plain,
    ( sP23
  <=> ( sP13
     => sP20 ) ),
    introduced(definition,[new_symbols(definition,[sP23])]) ).

thf(sP24,plain,
    ( sP24
  <=> ( sP15
     => sP16 ) ),
    introduced(definition,[new_symbols(definition,[sP24])]) ).

thf(sP25,plain,
    ( sP25
  <=> ! [X1: $i] :
        ( sP4
       => ( ( in @ X1 @ eigen__2 )
         => ( in @ X1 @ eigen__0 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP25])]) ).

thf(sP26,plain,
    ( sP26
  <=> ! [X1: $i,X2: $i] :
        ( ! [X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) )
       => ( subset @ X1 @ X2 ) ) ),
    introduced(definition,[new_symbols(definition,[sP26])]) ).

thf(sP27,plain,
    ( sP27
  <=> ! [X1: $i,X2: $i] :
        ( ( in @ X1 @ ( powerset @ eigen__1 ) )
       => ( ( in @ X2 @ X1 )
         => ( in @ X2 @ eigen__1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP27])]) ).

thf(sP28,plain,
    ( sP28
  <=> ! [X1: $i] :
        ( ( in @ X1 @ eigen__0 )
       => ( ( in @ X1 @ eigen__1 )
         => ( in @ X1
            @ ( dsetconstr @ eigen__0
              @ ^ [X2: $i] : ( in @ X2 @ eigen__1 ) ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP28])]) ).

thf(sP29,plain,
    ( sP29
  <=> ! [X1: $i] :
        ( ( subset @ eigen__2 @ X1 )
       => ( in @ eigen__2 @ ( powerset @ X1 ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP29])]) ).

thf(sP30,plain,
    ( sP30
  <=> ( sP6
     => ( in @ eigen__3 @ eigen__0 ) ) ),
    introduced(definition,[new_symbols(definition,[sP30])]) ).

thf(sP31,plain,
    ( sP31
  <=> ! [X1: $i > $o,X2: $i] :
        ( ( in @ X2 @ eigen__0 )
       => ( ( X1 @ X2 )
         => ( in @ X2 @ ( dsetconstr @ eigen__0 @ X1 ) ) ) ) ),
    introduced(definition,[new_symbols(definition,[sP31])]) ).

thf(sP32,plain,
    ( sP32
  <=> ( in @ eigen__3 @ eigen__0 ) ),
    introduced(definition,[new_symbols(definition,[sP32])]) ).

thf(def_setextAx,definition,
    ( setextAx
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
              = ( in @ X3 @ X2 ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_emptysetAx,definition,
    ( emptysetAx
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_setadjoinAx,definition,
    ( setadjoinAx
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
          = ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_powersetAx,definition,
    ( powersetAx
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
          = ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_setunionAx,definition,
    ( setunionAx
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
          = ( ~ ! [X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ~ ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_omega0Ax,definition,
    ( omega0Ax
    = ( in @ emptyset @ omega ) ) ).

thf(def_omegaSAx,definition,
    ( omegaSAx
    = ( ! [X1: $i] :
          ( ( in @ X1 @ omega )
         => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) ) ) ) ).

thf(def_omegaIndAx,definition,
    ( omegaIndAx
    = ( ! [X1: $i] :
          ( ~ ( ( in @ emptyset @ X1 )
             => ~ ! [X2: $i] :
                    ( ~ ( ( in @ X2 @ omega )
                       => ~ ( in @ X2 @ X1 ) )
                   => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
         => ! [X2: $i] :
              ( ( in @ X2 @ omega )
             => ( in @ X2 @ X1 ) ) ) ) ) ).

thf(def_replAx,definition,
    ( replAx
    = ( ! [X1: $i > $i > $o,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( exu @ ( X1 @ X3 ) ) )
         => ~ ! [X3: $i] :
                ~ ! [X4: $i] :
                    ( ( in @ X4 @ X3 )
                    = ( ~ ! [X5: $i] :
                            ( ( in @ X5 @ X2 )
                           => ~ ( X1 @ X5 @ X4 ) ) ) ) ) ) ) ).

thf(def_foundationAx,definition,
    ( foundationAx
    = ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ~ ! [X2: $i] :
                ( ( in @ X2 @ X1 )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ X1 ) ) ) ) ) ) ).

thf(def_wellorderingAx,definition,
    ( wellorderingAx
    = ( ! [X1: $i] :
          ~ ! [X2: $i] :
              ( ~ ( ~ ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X1 )
                               => ~ ( in @ X4 @ X1 ) )
                           => ( ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ( ( in @ X3 @ X5 )
                                    = ( in @ X4 @ X5 ) ) )
                             => ( X3 = X4 ) ) ) )
                 => ~ ! [X3: $i,X4: $i] :
                        ( ~ ( ( in @ X3 @ X2 )
                           => ~ ( in @ X4 @ X2 ) )
                       => ( ~ ! [X5: $i] :
                                ( ( in @ X5 @ X3 )
                               => ( in @ X5 @ X4 ) )
                         => ! [X5: $i] :
                              ( ( in @ X5 @ X4 )
                             => ( in @ X5 @ X3 ) ) ) ) )
             => ~ ! [X3: $i] :
                    ( ~ ( ! [X4: $i] :
                            ( ( in @ X4 @ X3 )
                           => ( in @ X4 @ X1 ) )
                       => ! [X4: $i] :
                            ~ ( in @ X4 @ X3 ) )
                   => ~ ! [X4: $i,X5: $i] :
                          ( ~ ( ~ ( ( in @ X4 @ X2 )
                                 => ~ ( in @ X5 @ X3 ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X4 )
                                   => ~ ( in @ X6 @ X3 ) ) )
                         => ~ ! [X6: $i] :
                                ( ( in @ X6 @ X2 )
                               => ( ~ ! [X7: $i] :
                                        ( ( in @ X7 @ X6 )
                                       => ( in @ X7 @ X4 ) )
                                 => ( in @ X5 @ X6 ) ) ) ) ) ) ) ) ).

thf(def_descrp,definition,
    ( descrp
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ( X1 @ ( descr @ X1 ) ) ) ) ) ).

thf(def_dsetconstrI,definition,
    dsetconstrI = sP3 ).

thf(def_dsetconstrEL,definition,
    ( dsetconstrEL
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) ) ) ) ).

thf(def_dsetconstrER,definition,
    ( dsetconstrER
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( X2 @ X3 ) ) ) ) ).

thf(def_exuE1,definition,
    ( exuE1
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_prop2setE,definition,
    ( prop2setE
    = ( ! [X1: $o,X2: $i] :
          ( ( in @ X2 @ ( prop2set @ X1 ) )
         => X1 ) ) ) ).

thf(def_emptysetE,definition,
    ( emptysetE
    = ( ! [X1: $i] :
          ( ( in @ X1 @ emptyset )
         => ! [X2: $o] : X2 ) ) ) ).

thf(def_emptysetimpfalse,definition,
    ( emptysetimpfalse
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_notinemptyset,definition,
    ( notinemptyset
    = ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset ) ) ) ).

thf(def_exuE3e,definition,
    ( exuE3e
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ( X1 @ X2 ) ) ) ) ).

thf(def_setext,definition,
    ( setext
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) )
           => ( X1 = X2 ) ) ) ) ) ).

thf(def_emptyI,definition,
    ( emptyI
    = ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_noeltsimpempty,definition,
    ( noeltsimpempty
    = ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_setbeta,definition,
    ( setbeta
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
            = ( X2 @ X3 ) ) ) ) ) ).

thf(def_nonemptyE1,definition,
    ( nonemptyE1
    = ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) ) ) ) ).

thf(def_nonemptyI,definition,
    ( nonemptyI
    = ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) ) ) ) ).

thf(def_nonemptyI1,definition,
    ( nonemptyI1
    = ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ( nonempty @ X1 ) ) ) ) ).

thf(def_setadjoinIL,definition,
    ( setadjoinIL
    = ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) ) ) ) ).

thf(def_emptyinunitempty,definition,
    ( emptyinunitempty
    = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).

thf(def_setadjoinIR,definition,
    ( setadjoinIR
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) ) ) ) ).

thf(def_setadjoinE,definition,
    ( setadjoinE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( X3 = X1 )
               => X4 )
             => ( ( ( in @ X3 @ X2 )
                 => X4 )
               => X4 ) ) ) ) ) ).

thf(def_setadjoinOr,definition,
    ( setadjoinOr
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_setoftrueEq,definition,
    ( setoftrueEq
    = ( ! [X1: $i] :
          ( ( dsetconstr @ X1
            @ ^ [X2: $i] : ~ $false )
          = X1 ) ) ) ).

thf(def_powersetI,definition,
    ( powersetI
    = ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ X1 ) )
         => ( in @ X2 @ ( powerset @ X1 ) ) ) ) ) ).

thf(def_emptyinPowerset,definition,
    ( emptyinPowerset
    = ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) ) ) ) ).

thf(def_emptyInPowerset,definition,
    ( emptyInPowerset
    = ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) ) ) ) ).

thf(def_powersetE,definition,
    powersetE = sP7 ).

thf(def_setunionI,definition,
    ( setunionI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ X3 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X2 @ ( setunion @ X1 ) ) ) ) ) ) ).

thf(def_setunionE,definition,
    ( setunionE
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ! [X3: $o] :
              ( ! [X4: $i] :
                  ( ( in @ X2 @ X4 )
                 => ( ( in @ X4 @ X1 )
                   => X3 ) )
             => X3 ) ) ) ) ).

thf(def_subPowSU,definition,
    ( subPowSU
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) ) ) ) ).

thf(def_exuE2,definition,
    ( exuE2
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) ) ) ) ) ).

thf(def_nonemptyImpWitness,definition,
    ( nonemptyImpWitness
    = ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) ) ) ) ).

thf(def_uniqinunit,definition,
    ( uniqinunit
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) ) ) ) ).

thf(def_notinsingleton,definition,
    ( notinsingleton
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 != X2 )
         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_eqinunit,definition,
    ( eqinunit
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_singletonsswitch,definition,
    ( singletonsswitch
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ) ) ) ).

thf(def_upairsetE,definition,
    ( upairsetE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) ) ) ) ).

thf(def_upairsetIL,definition,
    ( upairsetIL
    = ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_upairsetIR,definition,
    ( upairsetIR
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_emptyE1,definition,
    ( emptyE1
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
         => ( ( dsetconstr @ X1 @ X2 )
           != emptyset ) ) ) ) ).

thf(def_vacuousDall,definition,
    ( vacuousDall
    = ( ! [X1: $i > $o,X2: $i] :
          ( ( in @ X2 @ emptyset )
         => ( X1 @ X2 ) ) ) ) ).

thf(def_quantDeMorgan1,definition,
    ( quantDeMorgan1
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan2,definition,
    ( quantDeMorgan2
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan3,definition,
    ( quantDeMorgan3
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_quantDeMorgan4,definition,
    ( quantDeMorgan4
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_prop2setI,definition,
    ( prop2setI
    = ( ! [X1: $o] :
          ( X1
         => ( in @ emptyset @ ( prop2set @ X1 ) ) ) ) ) ).

thf(def_prop2set2propI,definition,
    ( prop2set2propI
    = ( ! [X1: $o] :
          ( X1
         => ( set2prop @ ( prop2set @ X1 ) ) ) ) ) ).

thf(def_notdexE,definition,
    ( notdexE
    = ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) ) ) ) ).

thf(def_notdallE,definition,
    ( notdallE
    = ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) ) ) ) ).

thf(def_exuI1,definition,
    ( exuI1
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ( exu @ X1 ) ) ) ) ).

thf(def_exuI3,definition,
    ( exuI3
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ( X1 @ X2 )
         => ( ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
           => ( exu @ X1 ) ) ) ) ) ).

thf(def_exuI2,definition,
    ( exuI2
    = ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) )
         => ( exu @ X1 ) ) ) ) ).

thf(def_inCongP,definition,
    ( inCongP
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X4 @ X2 ) ) ) ) ) ) ).

thf(def_in__Cong,definition,
    ( in__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
                = ( in @ X4 @ X2 ) ) ) ) ) ) ).

thf(def_exuE3u,definition,
    ( exuE3u
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_exu__Cong,definition,
    ( exu__Cong
    = ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
            = ( exu @ X2 ) ) ) ) ) ).

thf(def_emptyset__Cong,definition,
    ( emptyset__Cong
    = ( emptyset = emptyset ) ) ).

thf(def_setadjoin__Cong,definition,
    ( setadjoin__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( setadjoin @ X1 @ X3 )
                = ( setadjoin @ X2 @ X4 ) ) ) ) ) ) ).

thf(def_powerset__Cong,definition,
    ( powerset__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( powerset @ X1 )
            = ( powerset @ X2 ) ) ) ) ) ).

thf(def_setunion__Cong,definition,
    ( setunion__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setunion @ X1 )
            = ( setunion @ X2 ) ) ) ) ) ).

thf(def_omega__Cong,definition,
    ( omega__Cong
    = ( omega = omega ) ) ).

thf(def_exuEu,definition,
    ( exuEu
    = ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) ) ) ) ).

thf(def_descr__Cong,definition,
    ( descr__Cong
    = ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
           => ( ( exu @ X2 )
             => ( ( descr @ X1 )
                = ( descr @ X2 ) ) ) ) ) ) ) ).

thf(def_dsetconstr__Cong,definition,
    ( dsetconstr__Cong
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i > $o,X4: $i > $o] :
              ( ! [X5: $i] :
                  ( ( in @ X5 @ X1 )
                 => ! [X6: $i] :
                      ( ( in @ X6 @ X2 )
                     => ( ( X5 = X6 )
                       => ( ( X3 @ X5 )
                          = ( X4 @ X6 ) ) ) ) )
             => ( ( dsetconstr @ X1 @ X3 )
                = ( dsetconstr @ X2 @ X4 ) ) ) ) ) ) ).

thf(def_subsetI1,definition,
    subsetI1 = sP26 ).

thf(def_eqimpsubset2,definition,
    ( eqimpsubset2
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X2 @ X1 ) ) ) ) ).

thf(def_eqimpsubset1,definition,
    ( eqimpsubset1
    = ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X1 @ X2 ) ) ) ) ).

thf(def_subsetI2,definition,
    subsetI2 = sP26 ).

thf(def_emptysetsubset,definition,
    ( emptysetsubset
    = ( !! @ ( subset @ emptyset ) ) ) ).

thf(def_subsetE,definition,
    ( subsetE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_subsetE2,definition,
    ( subsetE2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) ) ) ) ).

thf(def_notsubsetI,definition,
    ( notsubsetI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( subset @ X1 @ X2 ) ) ) ) ) ).

thf(def_notequalI1,definition,
    ( notequalI1
    = ( ! [X1: $i,X2: $i] :
          ( ~ ( subset @ X1 @ X2 )
         => ( X1 != X2 ) ) ) ) ).

thf(def_notequalI2,definition,
    ( notequalI2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( X1 != X2 ) ) ) ) ) ).

thf(def_subsetRefl,definition,
    ( subsetRefl
    = ( ! [X1: $i] : ( subset @ X1 @ X1 ) ) ) ).

thf(def_subsetTrans,definition,
    ( subsetTrans
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X3 )
           => ( subset @ X1 @ X3 ) ) ) ) ) ).

thf(def_setadjoinSub,definition,
    ( setadjoinSub
    = ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) ) ) ) ).

thf(def_setadjoinSub2,definition,
    ( setadjoinSub2
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X3 )
         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) ) ) ) ).

thf(def_subset2powerset,definition,
    subset2powerset = sP1 ).

thf(def_setextsub,definition,
    ( setextsub
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X1 )
           => ( X1 = X2 ) ) ) ) ) ).

thf(def_subsetemptysetimpeq,definition,
    ( subsetemptysetimpeq
    = ( ! [X1: $i] :
          ( ( subset @ X1 @ emptyset )
         => ( X1 = emptyset ) ) ) ) ).

thf(def_powersetI1,definition,
    ( powersetI1
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ X1 ) ) ) ) ) ).

thf(def_powersetE1,definition,
    ( powersetE1
    = ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( subset @ X2 @ X1 ) ) ) ) ).

thf(def_inPowerset,definition,
    ( inPowerset
    = ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) ) ) ) ).

thf(def_powersetsubset,definition,
    ( powersetsubset
    = ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) ) ) ) ).

thf(def_sepInPowerset,definition,
    ( sepInPowerset
    = ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) ) ) ) ).

thf(def_sepSubset,definition,
    ( sepSubset
    = ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 ) ) ) ).

thf(def_binunionIL,definition,
    ( binunionIL
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ) ) ) ).

thf(def_upairset2IR,definition,
    ( upairset2IR
    = ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ) ) ) ).

thf(def_binunionIR,definition,
    ( binunionIR
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ) ) ) ).

thf(def_binunionEcases,definition,
    ( binunionEcases
    = ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ( ( in @ X3 @ X1 )
             => X4 )
           => ( ( ( in @ X3 @ X2 )
               => X4 )
             => X4 ) ) ) ) ) ).

thf(def_binunionE,definition,
    ( binunionE
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) ) ) ) ).

thf(def_binunionLsub,definition,
    ( binunionLsub
    = ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) ) ) ) ).

thf(def_binunionRsub,definition,
    ( binunionRsub
    = ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) ) ) ) ).

thf(def_binintersect,definition,
    ( binintersect
    = ( ^ [X1: $i,X2: $i] :
          ( dsetconstr @ X1
          @ ^ [X3: $i] : ( in @ X3 @ X2 ) ) ) ) ).

thf(def_binintersectI,definition,
    ( binintersectI
    = ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( binintersect @ X1 @ X2 ) ) ) ) ) ) ).

thf(binintersectSubset5,conjecture,
    ( ! [X1: $i,X2: $i] :
        ( ! [X3: $i] :
            ( ( in @ X3 @ X1 )
            = ( in @ X3 @ X2 ) )
       => ( X1 = X2 ) )
   => ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( powerset @ X1 ) )
              = ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ X1 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( setunion @ X1 ) )
                = ( ~ ! [X3: $i] :
                        ( ( in @ X2 @ X3 )
                       => ~ ( in @ X3 @ X1 ) ) ) )
           => ( ( in @ emptyset @ omega )
             => ( ! [X1: $i] :
                    ( ( in @ X1 @ omega )
                   => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
               => ( ! [X1: $i] :
                      ( ~ ( ( in @ emptyset @ X1 )
                         => ~ ! [X2: $i] :
                                ( ~ ( ( in @ X2 @ omega )
                                   => ~ ( in @ X2 @ X1 ) )
                               => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                     => ! [X2: $i] :
                          ( ( in @ X2 @ omega )
                         => ( in @ X2 @ X1 ) ) )
                 => ( ! [X1: $i > $i > $o,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( exu @ ( X1 @ X3 ) ) )
                       => ~ ! [X3: $i] :
                              ~ ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                  = ( ~ ! [X5: $i] :
                                          ( ( in @ X5 @ X2 )
                                         => ~ ( X1 @ X5 @ X4 ) ) ) ) )
                   => ( ! [X1: $i] :
                          ( ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                         => ~ ! [X2: $i] :
                                ( ( in @ X2 @ X1 )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ~ ( in @ X3 @ X1 ) ) ) )
                     => ( ! [X1: $i] :
                            ~ ! [X2: $i] :
                                ( ~ ( ~ ( ! [X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ! [X4: $i] :
                                                ( ( in @ X4 @ X3 )
                                               => ( in @ X4 @ X1 ) ) )
                                       => ~ ! [X3: $i,X4: $i] :
                                              ( ~ ( ( in @ X3 @ X1 )
                                                 => ~ ( in @ X4 @ X1 ) )
                                             => ( ! [X5: $i] :
                                                    ( ( in @ X5 @ X2 )
                                                   => ( ( in @ X3 @ X5 )
                                                      = ( in @ X4 @ X5 ) ) )
                                               => ( X3 = X4 ) ) ) )
                                   => ~ ! [X3: $i,X4: $i] :
                                          ( ~ ( ( in @ X3 @ X2 )
                                             => ~ ( in @ X4 @ X2 ) )
                                         => ( ~ ! [X5: $i] :
                                                  ( ( in @ X5 @ X3 )
                                                 => ( in @ X5 @ X4 ) )
                                           => ! [X5: $i] :
                                                ( ( in @ X5 @ X4 )
                                               => ( in @ X5 @ X3 ) ) ) ) )
                               => ~ ! [X3: $i] :
                                      ( ~ ( ! [X4: $i] :
                                              ( ( in @ X4 @ X3 )
                                             => ( in @ X4 @ X1 ) )
                                         => ! [X4: $i] :
                                              ~ ( in @ X4 @ X3 ) )
                                     => ~ ! [X4: $i,X5: $i] :
                                            ( ~ ( ~ ( ( in @ X4 @ X2 )
                                                   => ~ ( in @ X5 @ X3 ) )
                                               => ~ ! [X6: $i] :
                                                      ( ( in @ X6 @ X4 )
                                                     => ~ ( in @ X6 @ X3 ) ) )
                                           => ~ ! [X6: $i] :
                                                  ( ( in @ X6 @ X2 )
                                                 => ( ~ ! [X7: $i] :
                                                          ( ( in @ X7 @ X6 )
                                                         => ( in @ X7 @ X4 ) )
                                                   => ( in @ X5 @ X6 ) ) ) ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ( X1 @ ( descr @ X1 ) ) )
                         => ( sP3
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                 => ( in @ X3 @ X1 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                 => ( ! [X1: $o,X2: $i] :
                                        ( ( in @ X2 @ ( prop2set @ X1 ) )
                                       => X1 )
                                   => ( ! [X1: $i] :
                                          ( ( in @ X1 @ emptyset )
                                         => ! [X2: $o] : X2 )
                                     => ( ! [X1: $i] :
                                            ~ ( in @ X1 @ emptyset )
                                       => ( ! [X1: $i] :
                                              ~ ( in @ X1 @ emptyset )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ( X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ X2 ) )
                                                 => ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ X1 ) )
                                                   => ( X1 = X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 )
                                                   => ( X1 = emptyset ) )
                                               => ( ! [X1: $i] :
                                                      ( ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 )
                                                     => ( X1 = emptyset ) )
                                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                          = ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( nonempty @ X1 )
                                                         => ~ ! [X2: $i] :
                                                                ~ ( in @ X2 @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ( X2 @ X3 )
                                                             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ~ ! [X2: $i] :
                                                                    ~ ( in @ X2 @ X1 )
                                                             => ( nonempty @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                     => ! [X4: $o] :
                                                                          ( ( ( X3 = X1 )
                                                                           => X4 )
                                                                         => ( ( ( in @ X3 @ X2 )
                                                                             => X4 )
                                                                           => X4 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                       => ( ( X3 != X1 )
                                                                         => ( in @ X3 @ X2 ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( dsetconstr @ X1
                                                                            @ ^ [X2: $i] : ~ $false )
                                                                          = X1 )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X2 )
                                                                               => ( in @ X3 @ X1 ) )
                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                           => ( sP7
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X2 @ X3 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                     => ! [X3: $o] :
                                                                                          ( ! [X4: $i] :
                                                                                              ( ( in @ X2 @ X4 )
                                                                                             => ( ( in @ X4 @ X1 )
                                                                                               => X3 ) )
                                                                                         => X3 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X2 @ X1 )
                                                                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ( exu @ X1 )
                                                                                         => ~ ! [X2: $i] :
                                                                                                ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                    = ( X3 = X2 ) ) )
                                                                                     => ( ! [X1: $i] :
                                                                                            ( ( nonempty @ X1 )
                                                                                           => ~ ! [X2: $i] :
                                                                                                  ~ ( in @ X2 @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                             => ( X1 = X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 != X2 )
                                                                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ( X3 != X1 )
                                                                                                       => ( X3 = X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                                                                             != emptyset ) )
                                                                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                                                                              ( ( in @ X2 @ emptyset )
                                                                                                             => ( X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                                 => ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                   => ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) )
                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $o] :
                                                                                                                        ( X1
                                                                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                                   => ( ! [X1: $o] :
                                                                                                                          ( X1
                                                                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                            ( ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                                           => ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) )
                                                                                                                             => ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                                            ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                                               => ( exu @ X1 ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                                        ~ ( X1 @ X2 )
                                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                                   => ( exu @ X1 ) ) )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                                          ~ ! [X3: $i] :
                                                                                                                                              ( ( X1 @ X3 )
                                                                                                                                              = ( X3 = X2 ) )
                                                                                                                                   => ( exu @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                                          ( ( exu @ X1 )
                                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                                              ( ( X1 @ X2 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                                           => ( ( exu @ X1 )
                                                                                                                                              = ( exu @ X2 ) ) )
                                                                                                                                       => ( ( emptyset = emptyset )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( ( powerset @ X1 )
                                                                                                                                                    = ( powerset @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( ( setunion @ X1 )
                                                                                                                                                      = ( setunion @ X2 ) ) )
                                                                                                                                               => ( ( omega = omega )
                                                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                                                        ( ( exu @ X1 )
                                                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                                                            ( ( X1 @ X2 )
                                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                                                         => ( ( exu @ X1 )
                                                                                                                                                           => ( ( exu @ X2 )
                                                                                                                                                             => ( ( descr @ X1 )
                                                                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                                ( ! [X5: $i] :
                                                                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                                                                   => ! [X6: $i] :
                                                                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                                                                       => ( ( X5 = X6 )
                                                                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                       => ( sP26
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                                                                             => ( sP26
                                                                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( X1 != X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                                   => ( sP1
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).

thf(h1,negated_conjecture,
    ~ ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
              = ( in @ X3 @ X2 ) )
         => ( X1 = X2 ) )
     => ( ! [X1: $i] :
            ~ ( in @ X1 @ emptyset )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
              = ( ( X3 != X1 )
               => ( in @ X3 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( powerset @ X1 ) )
                = ( ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ X1 ) ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X2 @ ( setunion @ X1 ) )
                  = ( ~ ! [X3: $i] :
                          ( ( in @ X2 @ X3 )
                         => ~ ( in @ X3 @ X1 ) ) ) )
             => ( ( in @ emptyset @ omega )
               => ( ! [X1: $i] :
                      ( ( in @ X1 @ omega )
                     => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
                 => ( ! [X1: $i] :
                        ( ~ ( ( in @ emptyset @ X1 )
                           => ~ ! [X2: $i] :
                                  ( ~ ( ( in @ X2 @ omega )
                                     => ~ ( in @ X2 @ X1 ) )
                                 => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                       => ! [X2: $i] :
                            ( ( in @ X2 @ omega )
                           => ( in @ X2 @ X1 ) ) )
                   => ( ! [X1: $i > $i > $o,X2: $i] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( exu @ ( X1 @ X3 ) ) )
                         => ~ ! [X3: $i] :
                                ~ ! [X4: $i] :
                                    ( ( in @ X4 @ X3 )
                                    = ( ~ ! [X5: $i] :
                                            ( ( in @ X5 @ X2 )
                                           => ~ ( X1 @ X5 @ X4 ) ) ) ) )
                     => ( ! [X1: $i] :
                            ( ~ ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 )
                           => ~ ! [X2: $i] :
                                  ( ( in @ X2 @ X1 )
                                 => ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ~ ( in @ X3 @ X1 ) ) ) )
                       => ( ! [X1: $i] :
                              ~ ! [X2: $i] :
                                  ( ~ ( ~ ( ! [X3: $i] :
                                              ( ( in @ X3 @ X2 )
                                             => ! [X4: $i] :
                                                  ( ( in @ X4 @ X3 )
                                                 => ( in @ X4 @ X1 ) ) )
                                         => ~ ! [X3: $i,X4: $i] :
                                                ( ~ ( ( in @ X3 @ X1 )
                                                   => ~ ( in @ X4 @ X1 ) )
                                               => ( ! [X5: $i] :
                                                      ( ( in @ X5 @ X2 )
                                                     => ( ( in @ X3 @ X5 )
                                                        = ( in @ X4 @ X5 ) ) )
                                                 => ( X3 = X4 ) ) ) )
                                     => ~ ! [X3: $i,X4: $i] :
                                            ( ~ ( ( in @ X3 @ X2 )
                                               => ~ ( in @ X4 @ X2 ) )
                                           => ( ~ ! [X5: $i] :
                                                    ( ( in @ X5 @ X3 )
                                                   => ( in @ X5 @ X4 ) )
                                             => ! [X5: $i] :
                                                  ( ( in @ X5 @ X4 )
                                                 => ( in @ X5 @ X3 ) ) ) ) )
                                 => ~ ! [X3: $i] :
                                        ( ~ ( ! [X4: $i] :
                                                ( ( in @ X4 @ X3 )
                                               => ( in @ X4 @ X1 ) )
                                           => ! [X4: $i] :
                                                ~ ( in @ X4 @ X3 ) )
                                       => ~ ! [X4: $i,X5: $i] :
                                              ( ~ ( ~ ( ( in @ X4 @ X2 )
                                                     => ~ ( in @ X5 @ X3 ) )
                                                 => ~ ! [X6: $i] :
                                                        ( ( in @ X6 @ X4 )
                                                       => ~ ( in @ X6 @ X3 ) ) )
                                             => ~ ! [X6: $i] :
                                                    ( ( in @ X6 @ X2 )
                                                   => ( ~ ! [X7: $i] :
                                                            ( ( in @ X7 @ X6 )
                                                           => ( in @ X7 @ X4 ) )
                                                     => ( in @ X5 @ X6 ) ) ) ) ) )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ( X1 @ ( descr @ X1 ) ) )
                           => ( sP3
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( in @ X3 @ X1 ) )
                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                     => ( X2 @ X3 ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ( exu @ X1 )
                                       => ~ ! [X2: $i] :
                                              ( ( X1 @ X2 )
                                             => ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) ) )
                                   => ( ! [X1: $o,X2: $i] :
                                          ( ( in @ X2 @ ( prop2set @ X1 ) )
                                         => X1 )
                                     => ( ! [X1: $i] :
                                            ( ( in @ X1 @ emptyset )
                                           => ! [X2: $o] : X2 )
                                       => ( ! [X1: $i] :
                                              ~ ( in @ X1 @ emptyset )
                                         => ( ! [X1: $i] :
                                                ~ ( in @ X1 @ emptyset )
                                           => ( ! [X1: $i > $o] :
                                                  ( ( exu @ X1 )
                                                 => ~ ! [X2: $i] :
                                                        ~ ( X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( in @ X3 @ X2 ) )
                                                   => ( ! [X3: $i] :
                                                          ( ( in @ X3 @ X2 )
                                                         => ( in @ X3 @ X1 ) )
                                                     => ( X1 = X2 ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 )
                                                     => ( X1 = emptyset ) )
                                                 => ( ! [X1: $i] :
                                                        ( ! [X2: $i] :
                                                            ~ ( in @ X2 @ X1 )
                                                       => ( X1 = emptyset ) )
                                                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                            = ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i] :
                                                            ( ( nonempty @ X1 )
                                                           => ~ ! [X2: $i] :
                                                                  ~ ( in @ X2 @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( ( X2 @ X3 )
                                                               => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                         => ( ! [X1: $i] :
                                                                ( ~ ! [X2: $i] :
                                                                      ~ ( in @ X2 @ X1 )
                                                               => ( nonempty @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                             => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X2 )
                                                                     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                       => ! [X4: $o] :
                                                                            ( ( ( X3 = X1 )
                                                                             => X4 )
                                                                           => ( ( ( in @ X3 @ X2 )
                                                                               => X4 )
                                                                             => X4 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                         => ( ( X3 != X1 )
                                                                           => ( in @ X3 @ X2 ) ) )
                                                                     => ( ! [X1: $i] :
                                                                            ( ( dsetconstr @ X1
                                                                              @ ^ [X2: $i] : ~ $false )
                                                                            = X1 )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X2 )
                                                                                 => ( in @ X3 @ X1 ) )
                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                             => ( sP7
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X2 @ X3 )
                                                                                     => ( ( in @ X3 @ X1 )
                                                                                       => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                       => ! [X3: $o] :
                                                                                            ( ! [X4: $i] :
                                                                                                ( ( in @ X2 @ X4 )
                                                                                               => ( ( in @ X4 @ X1 )
                                                                                                 => X3 ) )
                                                                                           => X3 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( in @ X2 @ X1 )
                                                                                         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ( exu @ X1 )
                                                                                           => ~ ! [X2: $i] :
                                                                                                  ~ ! [X3: $i] :
                                                                                                      ( ( X1 @ X3 )
                                                                                                      = ( X3 = X2 ) ) )
                                                                                       => ( ! [X1: $i] :
                                                                                              ( ( nonempty @ X1 )
                                                                                             => ~ ! [X2: $i] :
                                                                                                    ~ ( in @ X2 @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                               => ( X1 = X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 != X2 )
                                                                                                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                       => ( ( X3 != X1 )
                                                                                                         => ( X3 = X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                                             => ( ( dsetconstr @ X1 @ X2 )
                                                                                                               != emptyset ) )
                                                                                                         => ( ! [X1: $i > $o,X2: $i] :
                                                                                                                ( ( in @ X2 @ emptyset )
                                                                                                               => ( X1 @ X2 ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) )
                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                   => ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                                     => ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                        ( ~ ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( X2 @ X3 ) )
                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( X2 @ X3 ) ) )
                                                                                                                   => ( ! [X1: $o] :
                                                                                                                          ( X1
                                                                                                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                                     => ( ! [X1: $o] :
                                                                                                                            ( X1
                                                                                                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                              ( ! [X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                                             => ! [X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( X2 @ X3 ) )
                                                                                                                               => ~ ! [X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                                              ( ( X1 @ X3 )
                                                                                                                                             => ( X2 = X3 ) ) )
                                                                                                                                 => ( exu @ X1 ) )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                                          ~ ( X1 @ X2 )
                                                                                                                                   => ( ! [X2: $i,X3: $i] :
                                                                                                                                          ( ( X1 @ X2 )
                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                                                     => ( exu @ X1 ) ) )
                                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                                      ( ~ ! [X2: $i] :
                                                                                                                                            ~ ! [X3: $i] :
                                                                                                                                                ( ( X1 @ X3 )
                                                                                                                                                = ( X3 = X2 ) )
                                                                                                                                     => ( exu @ X1 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                             => ( in @ X4 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                                                = ( in @ X4 @ X2 ) ) ) )
                                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                                            ( ( exu @ X1 )
                                                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                                                ( ( X1 @ X2 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                                                             => ( ( exu @ X1 )
                                                                                                                                                = ( exu @ X2 ) ) )
                                                                                                                                         => ( ( emptyset = emptyset )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( ( powerset @ X1 )
                                                                                                                                                      = ( powerset @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                                     => ( ( setunion @ X1 )
                                                                                                                                                        = ( setunion @ X2 ) ) )
                                                                                                                                                 => ( ( omega = omega )
                                                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                                                          ( ( exu @ X1 )
                                                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                                                              ( ( X1 @ X2 )
                                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                                                           => ( ( exu @ X1 )
                                                                                                                                                             => ( ( exu @ X2 )
                                                                                                                                                               => ( ( descr @ X1 )
                                                                                                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                                  ( ! [X5: $i] :
                                                                                                                                                                      ( ( in @ X5 @ X1 )
                                                                                                                                                                     => ! [X6: $i] :
                                                                                                                                                                          ( ( in @ X6 @ X2 )
                                                                                                                                                                         => ( ( X5 = X6 )
                                                                                                                                                                           => ( ( X3 @ X5 )
                                                                                                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                         => ( sP26
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                                                                               => ( sP26
                                                                                                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                               => ( X1 != X2 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                   => ( X1 != X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                                     => ( sP1
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                               => ( X1 = X2 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                               => ( X1 = emptyset ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                         => X4 )
                                                                                                                                                                                                                       => X4 ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                             => ( in @ X3
                                                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                             => ( subset @ X3
                                                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(assume_negation,[status(cth)],[binintersectSubset5]) ).

thf(h2,assumption,
    ! [X1: $i,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X1 )
          = ( in @ X3 @ X2 ) )
     => ( X1 = X2 ) ),
    introduced(assumption,[]) ).

thf(h3,assumption,
    ~ ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( powerset @ X1 ) )
              = ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ X1 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( setunion @ X1 ) )
                = ( ~ ! [X3: $i] :
                        ( ( in @ X2 @ X3 )
                       => ~ ( in @ X3 @ X1 ) ) ) )
           => ( ( in @ emptyset @ omega )
             => ( ! [X1: $i] :
                    ( ( in @ X1 @ omega )
                   => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
               => ( ! [X1: $i] :
                      ( ~ ( ( in @ emptyset @ X1 )
                         => ~ ! [X2: $i] :
                                ( ~ ( ( in @ X2 @ omega )
                                   => ~ ( in @ X2 @ X1 ) )
                               => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                     => ! [X2: $i] :
                          ( ( in @ X2 @ omega )
                         => ( in @ X2 @ X1 ) ) )
                 => ( ! [X1: $i > $i > $o,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( exu @ ( X1 @ X3 ) ) )
                       => ~ ! [X3: $i] :
                              ~ ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                  = ( ~ ! [X5: $i] :
                                          ( ( in @ X5 @ X2 )
                                         => ~ ( X1 @ X5 @ X4 ) ) ) ) )
                   => ( ! [X1: $i] :
                          ( ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                         => ~ ! [X2: $i] :
                                ( ( in @ X2 @ X1 )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ~ ( in @ X3 @ X1 ) ) ) )
                     => ( ! [X1: $i] :
                            ~ ! [X2: $i] :
                                ( ~ ( ~ ( ! [X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ! [X4: $i] :
                                                ( ( in @ X4 @ X3 )
                                               => ( in @ X4 @ X1 ) ) )
                                       => ~ ! [X3: $i,X4: $i] :
                                              ( ~ ( ( in @ X3 @ X1 )
                                                 => ~ ( in @ X4 @ X1 ) )
                                             => ( ! [X5: $i] :
                                                    ( ( in @ X5 @ X2 )
                                                   => ( ( in @ X3 @ X5 )
                                                      = ( in @ X4 @ X5 ) ) )
                                               => ( X3 = X4 ) ) ) )
                                   => ~ ! [X3: $i,X4: $i] :
                                          ( ~ ( ( in @ X3 @ X2 )
                                             => ~ ( in @ X4 @ X2 ) )
                                         => ( ~ ! [X5: $i] :
                                                  ( ( in @ X5 @ X3 )
                                                 => ( in @ X5 @ X4 ) )
                                           => ! [X5: $i] :
                                                ( ( in @ X5 @ X4 )
                                               => ( in @ X5 @ X3 ) ) ) ) )
                               => ~ ! [X3: $i] :
                                      ( ~ ( ! [X4: $i] :
                                              ( ( in @ X4 @ X3 )
                                             => ( in @ X4 @ X1 ) )
                                         => ! [X4: $i] :
                                              ~ ( in @ X4 @ X3 ) )
                                     => ~ ! [X4: $i,X5: $i] :
                                            ( ~ ( ~ ( ( in @ X4 @ X2 )
                                                   => ~ ( in @ X5 @ X3 ) )
                                               => ~ ! [X6: $i] :
                                                      ( ( in @ X6 @ X4 )
                                                     => ~ ( in @ X6 @ X3 ) ) )
                                           => ~ ! [X6: $i] :
                                                  ( ( in @ X6 @ X2 )
                                                 => ( ~ ! [X7: $i] :
                                                          ( ( in @ X7 @ X6 )
                                                         => ( in @ X7 @ X4 ) )
                                                   => ( in @ X5 @ X6 ) ) ) ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ( X1 @ ( descr @ X1 ) ) )
                         => ( sP3
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                 => ( in @ X3 @ X1 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                 => ( ! [X1: $o,X2: $i] :
                                        ( ( in @ X2 @ ( prop2set @ X1 ) )
                                       => X1 )
                                   => ( ! [X1: $i] :
                                          ( ( in @ X1 @ emptyset )
                                         => ! [X2: $o] : X2 )
                                     => ( ! [X1: $i] :
                                            ~ ( in @ X1 @ emptyset )
                                       => ( ! [X1: $i] :
                                              ~ ( in @ X1 @ emptyset )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ( X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ X2 ) )
                                                 => ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ X1 ) )
                                                   => ( X1 = X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 )
                                                   => ( X1 = emptyset ) )
                                               => ( ! [X1: $i] :
                                                      ( ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 )
                                                     => ( X1 = emptyset ) )
                                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                          = ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( nonempty @ X1 )
                                                         => ~ ! [X2: $i] :
                                                                ~ ( in @ X2 @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ( X2 @ X3 )
                                                             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ~ ! [X2: $i] :
                                                                    ~ ( in @ X2 @ X1 )
                                                             => ( nonempty @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                     => ! [X4: $o] :
                                                                          ( ( ( X3 = X1 )
                                                                           => X4 )
                                                                         => ( ( ( in @ X3 @ X2 )
                                                                             => X4 )
                                                                           => X4 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                       => ( ( X3 != X1 )
                                                                         => ( in @ X3 @ X2 ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( dsetconstr @ X1
                                                                            @ ^ [X2: $i] : ~ $false )
                                                                          = X1 )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X2 )
                                                                               => ( in @ X3 @ X1 ) )
                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                           => ( sP7
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X2 @ X3 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                     => ! [X3: $o] :
                                                                                          ( ! [X4: $i] :
                                                                                              ( ( in @ X2 @ X4 )
                                                                                             => ( ( in @ X4 @ X1 )
                                                                                               => X3 ) )
                                                                                         => X3 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X2 @ X1 )
                                                                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ( exu @ X1 )
                                                                                         => ~ ! [X2: $i] :
                                                                                                ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                    = ( X3 = X2 ) ) )
                                                                                     => ( ! [X1: $i] :
                                                                                            ( ( nonempty @ X1 )
                                                                                           => ~ ! [X2: $i] :
                                                                                                  ~ ( in @ X2 @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                             => ( X1 = X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 != X2 )
                                                                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ( X3 != X1 )
                                                                                                       => ( X3 = X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                                                                             != emptyset ) )
                                                                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                                                                              ( ( in @ X2 @ emptyset )
                                                                                                             => ( X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                                 => ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                   => ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) )
                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $o] :
                                                                                                                        ( X1
                                                                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                                   => ( ! [X1: $o] :
                                                                                                                          ( X1
                                                                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                            ( ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                                           => ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) )
                                                                                                                             => ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                                            ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                                               => ( exu @ X1 ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                                        ~ ( X1 @ X2 )
                                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                                   => ( exu @ X1 ) ) )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                                          ~ ! [X3: $i] :
                                                                                                                                              ( ( X1 @ X3 )
                                                                                                                                              = ( X3 = X2 ) )
                                                                                                                                   => ( exu @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                                          ( ( exu @ X1 )
                                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                                              ( ( X1 @ X2 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                                           => ( ( exu @ X1 )
                                                                                                                                              = ( exu @ X2 ) ) )
                                                                                                                                       => ( ( emptyset = emptyset )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( ( powerset @ X1 )
                                                                                                                                                    = ( powerset @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( ( setunion @ X1 )
                                                                                                                                                      = ( setunion @ X2 ) ) )
                                                                                                                                               => ( ( omega = omega )
                                                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                                                        ( ( exu @ X1 )
                                                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                                                            ( ( X1 @ X2 )
                                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                                                         => ( ( exu @ X1 )
                                                                                                                                                           => ( ( exu @ X2 )
                                                                                                                                                             => ( ( descr @ X1 )
                                                                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                                ( ! [X5: $i] :
                                                                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                                                                   => ! [X6: $i] :
                                                                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                                                                       => ( ( X5 = X6 )
                                                                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                       => ( sP26
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                                                                             => ( sP26
                                                                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( X1 != X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                                   => ( sP1
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h4,assumption,
    ! [X1: $i] :
      ~ ( in @ X1 @ emptyset ),
    introduced(assumption,[]) ).

thf(h5,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
          = ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( powerset @ X1 ) )
            = ( ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ X1 ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( setunion @ X1 ) )
              = ( ~ ! [X3: $i] :
                      ( ( in @ X2 @ X3 )
                     => ~ ( in @ X3 @ X1 ) ) ) )
         => ( ( in @ emptyset @ omega )
           => ( ! [X1: $i] :
                  ( ( in @ X1 @ omega )
                 => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
             => ( ! [X1: $i] :
                    ( ~ ( ( in @ emptyset @ X1 )
                       => ~ ! [X2: $i] :
                              ( ~ ( ( in @ X2 @ omega )
                                 => ~ ( in @ X2 @ X1 ) )
                             => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                   => ! [X2: $i] :
                        ( ( in @ X2 @ omega )
                       => ( in @ X2 @ X1 ) ) )
               => ( ! [X1: $i > $i > $o,X2: $i] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( exu @ ( X1 @ X3 ) ) )
                     => ~ ! [X3: $i] :
                            ~ ! [X4: $i] :
                                ( ( in @ X4 @ X3 )
                                = ( ~ ! [X5: $i] :
                                        ( ( in @ X5 @ X2 )
                                       => ~ ( X1 @ X5 @ X4 ) ) ) ) )
                 => ( ! [X1: $i] :
                        ( ~ ! [X2: $i] :
                              ~ ( in @ X2 @ X1 )
                       => ~ ! [X2: $i] :
                              ( ( in @ X2 @ X1 )
                             => ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ~ ( in @ X3 @ X1 ) ) ) )
                   => ( ! [X1: $i] :
                          ~ ! [X2: $i] :
                              ( ~ ( ~ ( ! [X3: $i] :
                                          ( ( in @ X3 @ X2 )
                                         => ! [X4: $i] :
                                              ( ( in @ X4 @ X3 )
                                             => ( in @ X4 @ X1 ) ) )
                                     => ~ ! [X3: $i,X4: $i] :
                                            ( ~ ( ( in @ X3 @ X1 )
                                               => ~ ( in @ X4 @ X1 ) )
                                           => ( ! [X5: $i] :
                                                  ( ( in @ X5 @ X2 )
                                                 => ( ( in @ X3 @ X5 )
                                                    = ( in @ X4 @ X5 ) ) )
                                             => ( X3 = X4 ) ) ) )
                                 => ~ ! [X3: $i,X4: $i] :
                                        ( ~ ( ( in @ X3 @ X2 )
                                           => ~ ( in @ X4 @ X2 ) )
                                       => ( ~ ! [X5: $i] :
                                                ( ( in @ X5 @ X3 )
                                               => ( in @ X5 @ X4 ) )
                                         => ! [X5: $i] :
                                              ( ( in @ X5 @ X4 )
                                             => ( in @ X5 @ X3 ) ) ) ) )
                             => ~ ! [X3: $i] :
                                    ( ~ ( ! [X4: $i] :
                                            ( ( in @ X4 @ X3 )
                                           => ( in @ X4 @ X1 ) )
                                       => ! [X4: $i] :
                                            ~ ( in @ X4 @ X3 ) )
                                   => ~ ! [X4: $i,X5: $i] :
                                          ( ~ ( ~ ( ( in @ X4 @ X2 )
                                                 => ~ ( in @ X5 @ X3 ) )
                                             => ~ ! [X6: $i] :
                                                    ( ( in @ X6 @ X4 )
                                                   => ~ ( in @ X6 @ X3 ) ) )
                                         => ~ ! [X6: $i] :
                                                ( ( in @ X6 @ X2 )
                                               => ( ~ ! [X7: $i] :
                                                        ( ( in @ X7 @ X6 )
                                                       => ( in @ X7 @ X4 ) )
                                                 => ( in @ X5 @ X6 ) ) ) ) ) )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ( X1 @ ( descr @ X1 ) ) )
                       => ( sP3
                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                               => ( in @ X3 @ X1 ) )
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                 => ( X2 @ X3 ) )
                             => ( ! [X1: $i > $o] :
                                    ( ( exu @ X1 )
                                   => ~ ! [X2: $i] :
                                          ( ( X1 @ X2 )
                                         => ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) ) )
                               => ( ! [X1: $o,X2: $i] :
                                      ( ( in @ X2 @ ( prop2set @ X1 ) )
                                     => X1 )
                                 => ( ! [X1: $i] :
                                        ( ( in @ X1 @ emptyset )
                                       => ! [X2: $o] : X2 )
                                   => ( ! [X1: $i] :
                                          ~ ( in @ X1 @ emptyset )
                                     => ( ! [X1: $i] :
                                            ~ ( in @ X1 @ emptyset )
                                       => ( ! [X1: $i > $o] :
                                              ( ( exu @ X1 )
                                             => ~ ! [X2: $i] :
                                                    ~ ( X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( in @ X3 @ X2 ) )
                                               => ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X2 )
                                                     => ( in @ X3 @ X1 ) )
                                                 => ( X1 = X2 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 )
                                                 => ( X1 = emptyset ) )
                                             => ( ! [X1: $i] :
                                                    ( ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 )
                                                   => ( X1 = emptyset ) )
                                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                        = ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i] :
                                                        ( ( nonempty @ X1 )
                                                       => ~ ! [X2: $i] :
                                                              ~ ( in @ X2 @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( ( X2 @ X3 )
                                                           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                     => ( ! [X1: $i] :
                                                            ( ~ ! [X2: $i] :
                                                                  ~ ( in @ X2 @ X1 )
                                                           => ( nonempty @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                         => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X2 )
                                                                 => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                   => ! [X4: $o] :
                                                                        ( ( ( X3 = X1 )
                                                                         => X4 )
                                                                       => ( ( ( in @ X3 @ X2 )
                                                                           => X4 )
                                                                         => X4 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                     => ( ( X3 != X1 )
                                                                       => ( in @ X3 @ X2 ) ) )
                                                                 => ( ! [X1: $i] :
                                                                        ( ( dsetconstr @ X1
                                                                          @ ^ [X2: $i] : ~ $false )
                                                                        = X1 )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ! [X3: $i] :
                                                                              ( ( in @ X3 @ X2 )
                                                                             => ( in @ X3 @ X1 ) )
                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                         => ( sP7
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X2 @ X3 )
                                                                                 => ( ( in @ X3 @ X1 )
                                                                                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                   => ! [X3: $o] :
                                                                                        ( ! [X4: $i] :
                                                                                            ( ( in @ X2 @ X4 )
                                                                                           => ( ( in @ X4 @ X1 )
                                                                                             => X3 ) )
                                                                                       => X3 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X2 @ X1 )
                                                                                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ( exu @ X1 )
                                                                                       => ~ ! [X2: $i] :
                                                                                              ~ ! [X3: $i] :
                                                                                                  ( ( X1 @ X3 )
                                                                                                  = ( X3 = X2 ) ) )
                                                                                   => ( ! [X1: $i] :
                                                                                          ( ( nonempty @ X1 )
                                                                                         => ~ ! [X2: $i] :
                                                                                                ~ ( in @ X2 @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                           => ( X1 = X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 != X2 )
                                                                                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ( X3 != X1 )
                                                                                                     => ( X3 = X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                         => ( ( dsetconstr @ X1 @ X2 )
                                                                                                           != emptyset ) )
                                                                                                     => ( ! [X1: $i > $o,X2: $i] :
                                                                                                            ( ( in @ X2 @ emptyset )
                                                                                                           => ( X1 @ X2 ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) )
                                                                                                             => ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                                               => ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                                 => ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ~ ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( X2 @ X3 ) )
                                                                                                                   => ~ ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $o] :
                                                                                                                      ( X1
                                                                                                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                                 => ( ! [X1: $o] :
                                                                                                                        ( X1
                                                                                                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                          ( ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                                         => ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( X2 @ X3 ) )
                                                                                                                           => ~ ! [X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( X2 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                                    ( ( X1 @ X2 )
                                                                                                                                   => ~ ! [X3: $i] :
                                                                                                                                          ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                             => ( exu @ X1 ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                                      ~ ( X1 @ X2 )
                                                                                                                               => ( ! [X2: $i,X3: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                       => ( X2 = X3 ) ) )
                                                                                                                                 => ( exu @ X1 ) ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                                        ~ ! [X3: $i] :
                                                                                                                                            ( ( X1 @ X3 )
                                                                                                                                            = ( X3 = X2 ) )
                                                                                                                                 => ( exu @ X1 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                         => ( in @ X4 @ X2 ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                            = ( in @ X4 @ X2 ) ) ) )
                                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                                        ( ( exu @ X1 )
                                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                                            ( ( X1 @ X2 )
                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                                         => ( ( exu @ X1 )
                                                                                                                                            = ( exu @ X2 ) ) )
                                                                                                                                     => ( ( emptyset = emptyset )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ( ( powerset @ X1 )
                                                                                                                                                  = ( powerset @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( ( setunion @ X1 )
                                                                                                                                                    = ( setunion @ X2 ) ) )
                                                                                                                                             => ( ( omega = omega )
                                                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                                                      ( ( exu @ X1 )
                                                                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                                                                          ( ( X1 @ X2 )
                                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                                                                       => ( ( exu @ X1 )
                                                                                                                                                         => ( ( exu @ X2 )
                                                                                                                                                           => ( ( descr @ X1 )
                                                                                                                                                              = ( descr @ X2 ) ) ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                              ( ! [X5: $i] :
                                                                                                                                                                  ( ( in @ X5 @ X1 )
                                                                                                                                                                 => ! [X6: $i] :
                                                                                                                                                                      ( ( in @ X6 @ X2 )
                                                                                                                                                                     => ( ( X5 = X6 )
                                                                                                                                                                       => ( ( X3 @ X5 )
                                                                                                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                     => ( sP26
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                                                                                           => ( sP26
                                                                                                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                           => ( X1 != X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                               => ( X1 != X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                                 => ( sP1
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                           => ( X1 = X2 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i] :
                                                                                                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                           => ( X1 = emptyset ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                   => X4 )
                                                                                                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                                   => X4 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                         => ( in @ X3
                                                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                         => ( subset @ X3
                                                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h6,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
      = ( ( X3 != X1 )
       => ( in @ X3 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h7,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
          = ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( setunion @ X1 ) )
            = ( ~ ! [X3: $i] :
                    ( ( in @ X2 @ X3 )
                   => ~ ( in @ X3 @ X1 ) ) ) )
       => ( ( in @ emptyset @ omega )
         => ( ! [X1: $i] :
                ( ( in @ X1 @ omega )
               => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
           => ( ! [X1: $i] :
                  ( ~ ( ( in @ emptyset @ X1 )
                     => ~ ! [X2: $i] :
                            ( ~ ( ( in @ X2 @ omega )
                               => ~ ( in @ X2 @ X1 ) )
                           => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                 => ! [X2: $i] :
                      ( ( in @ X2 @ omega )
                     => ( in @ X2 @ X1 ) ) )
             => ( ! [X1: $i > $i > $o,X2: $i] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( exu @ ( X1 @ X3 ) ) )
                   => ~ ! [X3: $i] :
                          ~ ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                              = ( ~ ! [X5: $i] :
                                      ( ( in @ X5 @ X2 )
                                     => ~ ( X1 @ X5 @ X4 ) ) ) ) )
               => ( ! [X1: $i] :
                      ( ~ ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                     => ~ ! [X2: $i] :
                            ( ( in @ X2 @ X1 )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ~ ( in @ X3 @ X1 ) ) ) )
                 => ( ! [X1: $i] :
                        ~ ! [X2: $i] :
                            ( ~ ( ~ ( ! [X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ! [X4: $i] :
                                            ( ( in @ X4 @ X3 )
                                           => ( in @ X4 @ X1 ) ) )
                                   => ~ ! [X3: $i,X4: $i] :
                                          ( ~ ( ( in @ X3 @ X1 )
                                             => ~ ( in @ X4 @ X1 ) )
                                         => ( ! [X5: $i] :
                                                ( ( in @ X5 @ X2 )
                                               => ( ( in @ X3 @ X5 )
                                                  = ( in @ X4 @ X5 ) ) )
                                           => ( X3 = X4 ) ) ) )
                               => ~ ! [X3: $i,X4: $i] :
                                      ( ~ ( ( in @ X3 @ X2 )
                                         => ~ ( in @ X4 @ X2 ) )
                                     => ( ~ ! [X5: $i] :
                                              ( ( in @ X5 @ X3 )
                                             => ( in @ X5 @ X4 ) )
                                       => ! [X5: $i] :
                                            ( ( in @ X5 @ X4 )
                                           => ( in @ X5 @ X3 ) ) ) ) )
                           => ~ ! [X3: $i] :
                                  ( ~ ( ! [X4: $i] :
                                          ( ( in @ X4 @ X3 )
                                         => ( in @ X4 @ X1 ) )
                                     => ! [X4: $i] :
                                          ~ ( in @ X4 @ X3 ) )
                                 => ~ ! [X4: $i,X5: $i] :
                                        ( ~ ( ~ ( ( in @ X4 @ X2 )
                                               => ~ ( in @ X5 @ X3 ) )
                                           => ~ ! [X6: $i] :
                                                  ( ( in @ X6 @ X4 )
                                                 => ~ ( in @ X6 @ X3 ) ) )
                                       => ~ ! [X6: $i] :
                                              ( ( in @ X6 @ X2 )
                                             => ( ~ ! [X7: $i] :
                                                      ( ( in @ X7 @ X6 )
                                                     => ( in @ X7 @ X4 ) )
                                               => ( in @ X5 @ X6 ) ) ) ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ( X1 @ ( descr @ X1 ) ) )
                     => ( sP3
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                             => ( in @ X3 @ X1 ) )
                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                               => ( X2 @ X3 ) )
                           => ( ! [X1: $i > $o] :
                                  ( ( exu @ X1 )
                                 => ~ ! [X2: $i] :
                                        ( ( X1 @ X2 )
                                       => ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) ) )
                             => ( ! [X1: $o,X2: $i] :
                                    ( ( in @ X2 @ ( prop2set @ X1 ) )
                                   => X1 )
                               => ( ! [X1: $i] :
                                      ( ( in @ X1 @ emptyset )
                                     => ! [X2: $o] : X2 )
                                 => ( ! [X1: $i] :
                                        ~ ( in @ X1 @ emptyset )
                                   => ( ! [X1: $i] :
                                          ~ ( in @ X1 @ emptyset )
                                     => ( ! [X1: $i > $o] :
                                            ( ( exu @ X1 )
                                           => ~ ! [X2: $i] :
                                                  ~ ( X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( in @ X3 @ X2 ) )
                                             => ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X2 )
                                                   => ( in @ X3 @ X1 ) )
                                               => ( X1 = X2 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                               => ( X1 = emptyset ) )
                                           => ( ! [X1: $i] :
                                                  ( ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 )
                                                 => ( X1 = emptyset ) )
                                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                      = ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ( nonempty @ X1 )
                                                     => ~ ! [X2: $i] :
                                                            ~ ( in @ X2 @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ( X2 @ X3 )
                                                         => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ~ ! [X2: $i] :
                                                                ~ ( in @ X2 @ X1 )
                                                         => ( nonempty @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                       => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X2 )
                                                               => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                 => ! [X4: $o] :
                                                                      ( ( ( X3 = X1 )
                                                                       => X4 )
                                                                     => ( ( ( in @ X3 @ X2 )
                                                                         => X4 )
                                                                       => X4 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                   => ( ( X3 != X1 )
                                                                     => ( in @ X3 @ X2 ) ) )
                                                               => ( ! [X1: $i] :
                                                                      ( ( dsetconstr @ X1
                                                                        @ ^ [X2: $i] : ~ $false )
                                                                      = X1 )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ! [X3: $i] :
                                                                            ( ( in @ X3 @ X2 )
                                                                           => ( in @ X3 @ X1 ) )
                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                       => ( sP7
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X2 @ X3 )
                                                                               => ( ( in @ X3 @ X1 )
                                                                                 => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                 => ! [X3: $o] :
                                                                                      ( ! [X4: $i] :
                                                                                          ( ( in @ X2 @ X4 )
                                                                                         => ( ( in @ X4 @ X1 )
                                                                                           => X3 ) )
                                                                                     => X3 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( in @ X2 @ X1 )
                                                                                   => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ( exu @ X1 )
                                                                                     => ~ ! [X2: $i] :
                                                                                            ~ ! [X3: $i] :
                                                                                                ( ( X1 @ X3 )
                                                                                                = ( X3 = X2 ) ) )
                                                                                 => ( ! [X1: $i] :
                                                                                        ( ( nonempty @ X1 )
                                                                                       => ~ ! [X2: $i] :
                                                                                              ~ ( in @ X2 @ X1 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                         => ( X1 = X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 != X2 )
                                                                                           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                 => ( ( X3 != X1 )
                                                                                                   => ( X3 = X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                       => ( ( dsetconstr @ X1 @ X2 )
                                                                                                         != emptyset ) )
                                                                                                   => ( ! [X1: $i > $o,X2: $i] :
                                                                                                          ( ( in @ X2 @ emptyset )
                                                                                                         => ( X1 @ X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) )
                                                                                                           => ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                             => ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                                               => ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) )
                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $o] :
                                                                                                                    ( X1
                                                                                                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                               => ( ! [X1: $o] :
                                                                                                                      ( X1
                                                                                                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                        ( ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                                       => ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                          ( ~ ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( X2 @ X3 ) )
                                                                                                                         => ~ ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( X2 @ X3 ) ) )
                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                                  ( ( X1 @ X2 )
                                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                                        ( ( X1 @ X3 )
                                                                                                                                       => ( X2 = X3 ) ) )
                                                                                                                           => ( exu @ X1 ) )
                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                                    ~ ( X1 @ X2 )
                                                                                                                             => ( ! [X2: $i,X3: $i] :
                                                                                                                                    ( ( X1 @ X2 )
                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                     => ( X2 = X3 ) ) )
                                                                                                                               => ( exu @ X1 ) ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                                      ~ ! [X3: $i] :
                                                                                                                                          ( ( X1 @ X3 )
                                                                                                                                          = ( X3 = X2 ) )
                                                                                                                               => ( exu @ X1 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                                       => ( in @ X4 @ X2 ) ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                          = ( in @ X4 @ X2 ) ) ) )
                                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                                      ( ( exu @ X1 )
                                                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                                                          ( ( X1 @ X2 )
                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                                                       => ( ( exu @ X1 )
                                                                                                                                          = ( exu @ X2 ) ) )
                                                                                                                                   => ( ( emptyset = emptyset )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ( ( powerset @ X1 )
                                                                                                                                                = ( powerset @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ( ( setunion @ X1 )
                                                                                                                                                  = ( setunion @ X2 ) ) )
                                                                                                                                           => ( ( omega = omega )
                                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                                    ( ( exu @ X1 )
                                                                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                                                                     => ( ( exu @ X1 )
                                                                                                                                                       => ( ( exu @ X2 )
                                                                                                                                                         => ( ( descr @ X1 )
                                                                                                                                                            = ( descr @ X2 ) ) ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                            ( ! [X5: $i] :
                                                                                                                                                                ( ( in @ X5 @ X1 )
                                                                                                                                                               => ! [X6: $i] :
                                                                                                                                                                    ( ( in @ X6 @ X2 )
                                                                                                                                                                   => ( ( X5 = X6 )
                                                                                                                                                                     => ( ( X3 @ X5 )
                                                                                                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                   => ( sP26
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                                             => ( subset @ X1 @ X2 ) )
                                                                                                                                                         => ( sP26
                                                                                                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( X1 != X2 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                             => ( X1 != X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                               => ( sP1
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i] :
                                                                                                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                         => ( X1 = emptyset ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                 => X4 )
                                                                                                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                   => X4 )
                                                                                                                                                                                                                 => X4 ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                       => ( in @ X3
                                                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                       => ( subset @ X3
                                                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h8,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( powerset @ X1 ) )
      = ( ! [X3: $i] :
            ( ( in @ X3 @ X2 )
           => ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h9,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
          = ( ~ ! [X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ~ ( in @ X3 @ X1 ) ) ) )
     => ( ( in @ emptyset @ omega )
       => ( ! [X1: $i] :
              ( ( in @ X1 @ omega )
             => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
         => ( ! [X1: $i] :
                ( ~ ( ( in @ emptyset @ X1 )
                   => ~ ! [X2: $i] :
                          ( ~ ( ( in @ X2 @ omega )
                             => ~ ( in @ X2 @ X1 ) )
                         => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
               => ! [X2: $i] :
                    ( ( in @ X2 @ omega )
                   => ( in @ X2 @ X1 ) ) )
           => ( ! [X1: $i > $i > $o,X2: $i] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( exu @ ( X1 @ X3 ) ) )
                 => ~ ! [X3: $i] :
                        ~ ! [X4: $i] :
                            ( ( in @ X4 @ X3 )
                            = ( ~ ! [X5: $i] :
                                    ( ( in @ X5 @ X2 )
                                   => ~ ( X1 @ X5 @ X4 ) ) ) ) )
             => ( ! [X1: $i] :
                    ( ~ ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                   => ~ ! [X2: $i] :
                          ( ( in @ X2 @ X1 )
                         => ~ ! [X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ~ ( in @ X3 @ X1 ) ) ) )
               => ( ! [X1: $i] :
                      ~ ! [X2: $i] :
                          ( ~ ( ~ ( ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ! [X4: $i] :
                                          ( ( in @ X4 @ X3 )
                                         => ( in @ X4 @ X1 ) ) )
                                 => ~ ! [X3: $i,X4: $i] :
                                        ( ~ ( ( in @ X3 @ X1 )
                                           => ~ ( in @ X4 @ X1 ) )
                                       => ( ! [X5: $i] :
                                              ( ( in @ X5 @ X2 )
                                             => ( ( in @ X3 @ X5 )
                                                = ( in @ X4 @ X5 ) ) )
                                         => ( X3 = X4 ) ) ) )
                             => ~ ! [X3: $i,X4: $i] :
                                    ( ~ ( ( in @ X3 @ X2 )
                                       => ~ ( in @ X4 @ X2 ) )
                                   => ( ~ ! [X5: $i] :
                                            ( ( in @ X5 @ X3 )
                                           => ( in @ X5 @ X4 ) )
                                     => ! [X5: $i] :
                                          ( ( in @ X5 @ X4 )
                                         => ( in @ X5 @ X3 ) ) ) ) )
                         => ~ ! [X3: $i] :
                                ( ~ ( ! [X4: $i] :
                                        ( ( in @ X4 @ X3 )
                                       => ( in @ X4 @ X1 ) )
                                   => ! [X4: $i] :
                                        ~ ( in @ X4 @ X3 ) )
                               => ~ ! [X4: $i,X5: $i] :
                                      ( ~ ( ~ ( ( in @ X4 @ X2 )
                                             => ~ ( in @ X5 @ X3 ) )
                                         => ~ ! [X6: $i] :
                                                ( ( in @ X6 @ X4 )
                                               => ~ ( in @ X6 @ X3 ) ) )
                                     => ~ ! [X6: $i] :
                                            ( ( in @ X6 @ X2 )
                                           => ( ~ ! [X7: $i] :
                                                    ( ( in @ X7 @ X6 )
                                                   => ( in @ X7 @ X4 ) )
                                             => ( in @ X5 @ X6 ) ) ) ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ( X1 @ ( descr @ X1 ) ) )
                   => ( sP3
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                           => ( in @ X3 @ X1 ) )
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                             => ( X2 @ X3 ) )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ~ ! [X2: $i] :
                                      ( ( X1 @ X2 )
                                     => ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) ) )
                           => ( ! [X1: $o,X2: $i] :
                                  ( ( in @ X2 @ ( prop2set @ X1 ) )
                                 => X1 )
                             => ( ! [X1: $i] :
                                    ( ( in @ X1 @ emptyset )
                                   => ! [X2: $o] : X2 )
                               => ( ! [X1: $i] :
                                      ~ ( in @ X1 @ emptyset )
                                 => ( ! [X1: $i] :
                                        ~ ( in @ X1 @ emptyset )
                                   => ( ! [X1: $i > $o] :
                                          ( ( exu @ X1 )
                                         => ~ ! [X2: $i] :
                                                ~ ( X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( in @ X3 @ X2 ) )
                                           => ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X2 )
                                                 => ( in @ X3 @ X1 ) )
                                             => ( X1 = X2 ) ) )
                                       => ( ! [X1: $i] :
                                              ( ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 )
                                             => ( X1 = emptyset ) )
                                         => ( ! [X1: $i] :
                                                ( ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                               => ( X1 = emptyset ) )
                                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                    = ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ( nonempty @ X1 )
                                                   => ~ ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 ) )
                                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ( X2 @ X3 )
                                                       => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                 => ( ! [X1: $i] :
                                                        ( ~ ! [X2: $i] :
                                                              ~ ( in @ X2 @ X1 )
                                                       => ( nonempty @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                     => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X2 )
                                                             => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                               => ! [X4: $o] :
                                                                    ( ( ( X3 = X1 )
                                                                     => X4 )
                                                                   => ( ( ( in @ X3 @ X2 )
                                                                       => X4 )
                                                                     => X4 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                 => ( ( X3 != X1 )
                                                                   => ( in @ X3 @ X2 ) ) )
                                                             => ( ! [X1: $i] :
                                                                    ( ( dsetconstr @ X1
                                                                      @ ^ [X2: $i] : ~ $false )
                                                                    = X1 )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ! [X3: $i] :
                                                                          ( ( in @ X3 @ X2 )
                                                                         => ( in @ X3 @ X1 ) )
                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                     => ( sP7
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X2 @ X3 )
                                                                             => ( ( in @ X3 @ X1 )
                                                                               => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                               => ! [X3: $o] :
                                                                                    ( ! [X4: $i] :
                                                                                        ( ( in @ X2 @ X4 )
                                                                                       => ( ( in @ X4 @ X1 )
                                                                                         => X3 ) )
                                                                                   => X3 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( in @ X2 @ X1 )
                                                                                 => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ( exu @ X1 )
                                                                                   => ~ ! [X2: $i] :
                                                                                          ~ ! [X3: $i] :
                                                                                              ( ( X1 @ X3 )
                                                                                              = ( X3 = X2 ) ) )
                                                                               => ( ! [X1: $i] :
                                                                                      ( ( nonempty @ X1 )
                                                                                     => ~ ! [X2: $i] :
                                                                                            ~ ( in @ X2 @ X1 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                       => ( X1 = X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 != X2 )
                                                                                         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                               => ( ( X3 != X1 )
                                                                                                 => ( X3 = X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                     => ( ( dsetconstr @ X1 @ X2 )
                                                                                                       != emptyset ) )
                                                                                                 => ( ! [X1: $i > $o,X2: $i] :
                                                                                                        ( ( in @ X2 @ emptyset )
                                                                                                       => ( X1 @ X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) )
                                                                                                         => ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                           => ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                             => ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $o] :
                                                                                                                  ( X1
                                                                                                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                             => ( ! [X1: $o] :
                                                                                                                    ( X1
                                                                                                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                                     => ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                        ( ~ ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( X2 @ X3 ) )
                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( X2 @ X3 ) ) )
                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                                ( ( X1 @ X2 )
                                                                                                                               => ~ ! [X3: $i] :
                                                                                                                                      ( ( X1 @ X3 )
                                                                                                                                     => ( X2 = X3 ) ) )
                                                                                                                         => ( exu @ X1 ) )
                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                                  ~ ( X1 @ X2 )
                                                                                                                           => ( ! [X2: $i,X3: $i] :
                                                                                                                                  ( ( X1 @ X2 )
                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                   => ( X2 = X3 ) ) )
                                                                                                                             => ( exu @ X1 ) ) )
                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                                    ~ ! [X3: $i] :
                                                                                                                                        ( ( X1 @ X3 )
                                                                                                                                        = ( X3 = X2 ) )
                                                                                                                             => ( exu @ X1 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                                     => ( in @ X4 @ X2 ) ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                                        = ( in @ X4 @ X2 ) ) ) )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ( exu @ X1 )
                                                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                                                     => ( ( exu @ X1 )
                                                                                                                                        = ( exu @ X2 ) ) )
                                                                                                                                 => ( ( emptyset = emptyset )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ( ( powerset @ X1 )
                                                                                                                                              = ( powerset @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ( ( setunion @ X1 )
                                                                                                                                                = ( setunion @ X2 ) ) )
                                                                                                                                         => ( ( omega = omega )
                                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                                  ( ( exu @ X1 )
                                                                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                                                                   => ( ( exu @ X1 )
                                                                                                                                                     => ( ( exu @ X2 )
                                                                                                                                                       => ( ( descr @ X1 )
                                                                                                                                                          = ( descr @ X2 ) ) ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                          ( ! [X5: $i] :
                                                                                                                                                              ( ( in @ X5 @ X1 )
                                                                                                                                                             => ! [X6: $i] :
                                                                                                                                                                  ( ( in @ X6 @ X2 )
                                                                                                                                                                 => ( ( X5 = X6 )
                                                                                                                                                                   => ( ( X3 @ X5 )
                                                                                                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                 => ( sP26
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                                                                                       => ( sP26
                                                                                                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( X1 != X2 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                           => ( X1 != X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                             => ( sP1
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                       => ( X1 = emptyset ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                               => X4 )
                                                                                                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                 => X4 )
                                                                                                                                                                                                               => X4 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                     => ( in @ X3
                                                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                     => ( subset @ X3
                                                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h10,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( setunion @ X1 ) )
      = ( ~ ! [X3: $i] :
              ( ( in @ X2 @ X3 )
             => ~ ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h11,assumption,
    ~ ( ( in @ emptyset @ omega )
     => ( ! [X1: $i] :
            ( ( in @ X1 @ omega )
           => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
       => ( ! [X1: $i] :
              ( ~ ( ( in @ emptyset @ X1 )
                 => ~ ! [X2: $i] :
                        ( ~ ( ( in @ X2 @ omega )
                           => ~ ( in @ X2 @ X1 ) )
                       => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
             => ! [X2: $i] :
                  ( ( in @ X2 @ omega )
                 => ( in @ X2 @ X1 ) ) )
         => ( ! [X1: $i > $i > $o,X2: $i] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( exu @ ( X1 @ X3 ) ) )
               => ~ ! [X3: $i] :
                      ~ ! [X4: $i] :
                          ( ( in @ X4 @ X3 )
                          = ( ~ ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ~ ( X1 @ X5 @ X4 ) ) ) ) )
           => ( ! [X1: $i] :
                  ( ~ ! [X2: $i] :
                        ~ ( in @ X2 @ X1 )
                 => ~ ! [X2: $i] :
                        ( ( in @ X2 @ X1 )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ~ ( in @ X3 @ X1 ) ) ) )
             => ( ! [X1: $i] :
                    ~ ! [X2: $i] :
                        ( ~ ( ~ ( ! [X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ! [X4: $i] :
                                        ( ( in @ X4 @ X3 )
                                       => ( in @ X4 @ X1 ) ) )
                               => ~ ! [X3: $i,X4: $i] :
                                      ( ~ ( ( in @ X3 @ X1 )
                                         => ~ ( in @ X4 @ X1 ) )
                                     => ( ! [X5: $i] :
                                            ( ( in @ X5 @ X2 )
                                           => ( ( in @ X3 @ X5 )
                                              = ( in @ X4 @ X5 ) ) )
                                       => ( X3 = X4 ) ) ) )
                           => ~ ! [X3: $i,X4: $i] :
                                  ( ~ ( ( in @ X3 @ X2 )
                                     => ~ ( in @ X4 @ X2 ) )
                                 => ( ~ ! [X5: $i] :
                                          ( ( in @ X5 @ X3 )
                                         => ( in @ X5 @ X4 ) )
                                   => ! [X5: $i] :
                                        ( ( in @ X5 @ X4 )
                                       => ( in @ X5 @ X3 ) ) ) ) )
                       => ~ ! [X3: $i] :
                              ( ~ ( ! [X4: $i] :
                                      ( ( in @ X4 @ X3 )
                                     => ( in @ X4 @ X1 ) )
                                 => ! [X4: $i] :
                                      ~ ( in @ X4 @ X3 ) )
                             => ~ ! [X4: $i,X5: $i] :
                                    ( ~ ( ~ ( ( in @ X4 @ X2 )
                                           => ~ ( in @ X5 @ X3 ) )
                                       => ~ ! [X6: $i] :
                                              ( ( in @ X6 @ X4 )
                                             => ~ ( in @ X6 @ X3 ) ) )
                                   => ~ ! [X6: $i] :
                                          ( ( in @ X6 @ X2 )
                                         => ( ~ ! [X7: $i] :
                                                  ( ( in @ X7 @ X6 )
                                                 => ( in @ X7 @ X4 ) )
                                           => ( in @ X5 @ X6 ) ) ) ) ) )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ( X1 @ ( descr @ X1 ) ) )
                 => ( sP3
                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                         => ( in @ X3 @ X1 ) )
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                           => ( X2 @ X3 ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) ) )
                         => ( ! [X1: $o,X2: $i] :
                                ( ( in @ X2 @ ( prop2set @ X1 ) )
                               => X1 )
                           => ( ! [X1: $i] :
                                  ( ( in @ X1 @ emptyset )
                                 => ! [X2: $o] : X2 )
                             => ( ! [X1: $i] :
                                    ~ ( in @ X1 @ emptyset )
                               => ( ! [X1: $i] :
                                      ~ ( in @ X1 @ emptyset )
                                 => ( ! [X1: $i > $o] :
                                        ( ( exu @ X1 )
                                       => ~ ! [X2: $i] :
                                              ~ ( X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( in @ X3 @ X2 ) )
                                         => ( ! [X3: $i] :
                                                ( ( in @ X3 @ X2 )
                                               => ( in @ X3 @ X1 ) )
                                           => ( X1 = X2 ) ) )
                                     => ( ! [X1: $i] :
                                            ( ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 )
                                           => ( X1 = emptyset ) )
                                       => ( ! [X1: $i] :
                                              ( ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 )
                                             => ( X1 = emptyset ) )
                                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                  = ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ( nonempty @ X1 )
                                                 => ~ ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 ) )
                                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ( X2 @ X3 )
                                                     => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ~ ! [X2: $i] :
                                                            ~ ( in @ X2 @ X1 )
                                                     => ( nonempty @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                   => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X2 )
                                                           => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                             => ! [X4: $o] :
                                                                  ( ( ( X3 = X1 )
                                                                   => X4 )
                                                                 => ( ( ( in @ X3 @ X2 )
                                                                     => X4 )
                                                                   => X4 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                               => ( ( X3 != X1 )
                                                                 => ( in @ X3 @ X2 ) ) )
                                                           => ( ! [X1: $i] :
                                                                  ( ( dsetconstr @ X1
                                                                    @ ^ [X2: $i] : ~ $false )
                                                                  = X1 )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ! [X3: $i] :
                                                                        ( ( in @ X3 @ X2 )
                                                                       => ( in @ X3 @ X1 ) )
                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                   => ( sP7
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X2 @ X3 )
                                                                           => ( ( in @ X3 @ X1 )
                                                                             => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                             => ! [X3: $o] :
                                                                                  ( ! [X4: $i] :
                                                                                      ( ( in @ X2 @ X4 )
                                                                                     => ( ( in @ X4 @ X1 )
                                                                                       => X3 ) )
                                                                                 => X3 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( in @ X2 @ X1 )
                                                                               => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ( exu @ X1 )
                                                                                 => ~ ! [X2: $i] :
                                                                                        ~ ! [X3: $i] :
                                                                                            ( ( X1 @ X3 )
                                                                                            = ( X3 = X2 ) ) )
                                                                             => ( ! [X1: $i] :
                                                                                    ( ( nonempty @ X1 )
                                                                                   => ~ ! [X2: $i] :
                                                                                          ~ ( in @ X2 @ X1 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                     => ( X1 = X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 != X2 )
                                                                                       => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ( X3 != X1 )
                                                                                               => ( X3 = X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                   => ( ( dsetconstr @ X1 @ X2 )
                                                                                                     != emptyset ) )
                                                                                               => ( ! [X1: $i > $o,X2: $i] :
                                                                                                      ( ( in @ X2 @ emptyset )
                                                                                                     => ( X1 @ X2 ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) )
                                                                                                       => ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                         => ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                           => ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) )
                                                                                                             => ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $o] :
                                                                                                                ( X1
                                                                                                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                           => ( ! [X1: $o] :
                                                                                                                  ( X1
                                                                                                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                   => ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) )
                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                        ( ~ ! [X2: $i] :
                                                                                                                              ( ( X1 @ X2 )
                                                                                                                             => ~ ! [X3: $i] :
                                                                                                                                    ( ( X1 @ X3 )
                                                                                                                                   => ( X2 = X3 ) ) )
                                                                                                                       => ( exu @ X1 ) )
                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                                ~ ( X1 @ X2 )
                                                                                                                         => ( ! [X2: $i,X3: $i] :
                                                                                                                                ( ( X1 @ X2 )
                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                 => ( X2 = X3 ) ) )
                                                                                                                           => ( exu @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                                  ~ ! [X3: $i] :
                                                                                                                                      ( ( X1 @ X3 )
                                                                                                                                      = ( X3 = X2 ) )
                                                                                                                           => ( exu @ X1 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                   => ( in @ X4 @ X2 ) ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                                      = ( in @ X4 @ X2 ) ) ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ( exu @ X1 )
                                                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                                                   => ( ( exu @ X1 )
                                                                                                                                      = ( exu @ X2 ) ) )
                                                                                                                               => ( ( emptyset = emptyset )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ( ( powerset @ X1 )
                                                                                                                                            = ( powerset @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ( ( setunion @ X1 )
                                                                                                                                              = ( setunion @ X2 ) ) )
                                                                                                                                       => ( ( omega = omega )
                                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                                ( ( exu @ X1 )
                                                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                                                    ( ( X1 @ X2 )
                                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                                                                 => ( ( exu @ X1 )
                                                                                                                                                   => ( ( exu @ X2 )
                                                                                                                                                     => ( ( descr @ X1 )
                                                                                                                                                        = ( descr @ X2 ) ) ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                        ( ! [X5: $i] :
                                                                                                                                                            ( ( in @ X5 @ X1 )
                                                                                                                                                           => ! [X6: $i] :
                                                                                                                                                                ( ( in @ X6 @ X2 )
                                                                                                                                                               => ( ( X5 = X6 )
                                                                                                                                                                 => ( ( X3 @ X5 )
                                                                                                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                               => ( sP26
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                                                                     => ( sP26
                                                                                                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( X1 != X2 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                         => ( X1 != X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( subset @ X1 @ X3 )
                                                                                                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                           => ( sP1
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                     => ( X1 = X2 ) ) )
                                                                                                                                                                               => ( ! [X1: $i] :
                                                                                                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                     => ( X1 = emptyset ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                             => X4 )
                                                                                                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                               => X4 )
                                                                                                                                                                                                             => X4 ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                   => ( in @ X3
                                                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                   => ( subset @ X3
                                                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h12,assumption,
    in @ emptyset @ omega,
    introduced(assumption,[]) ).

thf(h13,assumption,
    ~ ( ! [X1: $i] :
          ( ( in @ X1 @ omega )
         => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
     => ( ! [X1: $i] :
            ( ~ ( ( in @ emptyset @ X1 )
               => ~ ! [X2: $i] :
                      ( ~ ( ( in @ X2 @ omega )
                         => ~ ( in @ X2 @ X1 ) )
                     => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
           => ! [X2: $i] :
                ( ( in @ X2 @ omega )
               => ( in @ X2 @ X1 ) ) )
       => ( ! [X1: $i > $i > $o,X2: $i] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( exu @ ( X1 @ X3 ) ) )
             => ~ ! [X3: $i] :
                    ~ ! [X4: $i] :
                        ( ( in @ X4 @ X3 )
                        = ( ~ ! [X5: $i] :
                                ( ( in @ X5 @ X2 )
                               => ~ ( X1 @ X5 @ X4 ) ) ) ) )
         => ( ! [X1: $i] :
                ( ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
               => ~ ! [X2: $i] :
                      ( ( in @ X2 @ X1 )
                     => ~ ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ~ ( in @ X3 @ X1 ) ) ) )
           => ( ! [X1: $i] :
                  ~ ! [X2: $i] :
                      ( ~ ( ~ ( ! [X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ! [X4: $i] :
                                      ( ( in @ X4 @ X3 )
                                     => ( in @ X4 @ X1 ) ) )
                             => ~ ! [X3: $i,X4: $i] :
                                    ( ~ ( ( in @ X3 @ X1 )
                                       => ~ ( in @ X4 @ X1 ) )
                                   => ( ! [X5: $i] :
                                          ( ( in @ X5 @ X2 )
                                         => ( ( in @ X3 @ X5 )
                                            = ( in @ X4 @ X5 ) ) )
                                     => ( X3 = X4 ) ) ) )
                         => ~ ! [X3: $i,X4: $i] :
                                ( ~ ( ( in @ X3 @ X2 )
                                   => ~ ( in @ X4 @ X2 ) )
                               => ( ~ ! [X5: $i] :
                                        ( ( in @ X5 @ X3 )
                                       => ( in @ X5 @ X4 ) )
                                 => ! [X5: $i] :
                                      ( ( in @ X5 @ X4 )
                                     => ( in @ X5 @ X3 ) ) ) ) )
                     => ~ ! [X3: $i] :
                            ( ~ ( ! [X4: $i] :
                                    ( ( in @ X4 @ X3 )
                                   => ( in @ X4 @ X1 ) )
                               => ! [X4: $i] :
                                    ~ ( in @ X4 @ X3 ) )
                           => ~ ! [X4: $i,X5: $i] :
                                  ( ~ ( ~ ( ( in @ X4 @ X2 )
                                         => ~ ( in @ X5 @ X3 ) )
                                     => ~ ! [X6: $i] :
                                            ( ( in @ X6 @ X4 )
                                           => ~ ( in @ X6 @ X3 ) ) )
                                 => ~ ! [X6: $i] :
                                        ( ( in @ X6 @ X2 )
                                       => ( ~ ! [X7: $i] :
                                                ( ( in @ X7 @ X6 )
                                               => ( in @ X7 @ X4 ) )
                                         => ( in @ X5 @ X6 ) ) ) ) ) )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ( X1 @ ( descr @ X1 ) ) )
               => ( sP3
                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                        ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                       => ( in @ X3 @ X1 ) )
                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                         => ( X2 @ X3 ) )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ~ ! [X2: $i] :
                                  ( ( X1 @ X2 )
                                 => ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) ) )
                       => ( ! [X1: $o,X2: $i] :
                              ( ( in @ X2 @ ( prop2set @ X1 ) )
                             => X1 )
                         => ( ! [X1: $i] :
                                ( ( in @ X1 @ emptyset )
                               => ! [X2: $o] : X2 )
                           => ( ! [X1: $i] :
                                  ~ ( in @ X1 @ emptyset )
                             => ( ! [X1: $i] :
                                    ~ ( in @ X1 @ emptyset )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ~ ! [X2: $i] :
                                            ~ ( X1 @ X2 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( in @ X3 @ X2 ) )
                                       => ( ! [X3: $i] :
                                              ( ( in @ X3 @ X2 )
                                             => ( in @ X3 @ X1 ) )
                                         => ( X1 = X2 ) ) )
                                   => ( ! [X1: $i] :
                                          ( ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 )
                                         => ( X1 = emptyset ) )
                                     => ( ! [X1: $i] :
                                            ( ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 )
                                           => ( X1 = emptyset ) )
                                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                = ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( nonempty @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 ) )
                                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( ( X2 @ X3 )
                                                   => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ~ ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 )
                                                   => ( nonempty @ X1 ) )
                                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                 => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X2 )
                                                         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ! [X4: $o] :
                                                                ( ( ( X3 = X1 )
                                                                 => X4 )
                                                               => ( ( ( in @ X3 @ X2 )
                                                                   => X4 )
                                                                 => X4 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                             => ( ( X3 != X1 )
                                                               => ( in @ X3 @ X2 ) ) )
                                                         => ( ! [X1: $i] :
                                                                ( ( dsetconstr @ X1
                                                                  @ ^ [X2: $i] : ~ $false )
                                                                = X1 )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ! [X3: $i] :
                                                                      ( ( in @ X3 @ X2 )
                                                                     => ( in @ X3 @ X1 ) )
                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                 => ( sP7
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X2 @ X3 )
                                                                         => ( ( in @ X3 @ X1 )
                                                                           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                           => ! [X3: $o] :
                                                                                ( ! [X4: $i] :
                                                                                    ( ( in @ X2 @ X4 )
                                                                                   => ( ( in @ X4 @ X1 )
                                                                                     => X3 ) )
                                                                               => X3 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( in @ X2 @ X1 )
                                                                             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ( exu @ X1 )
                                                                               => ~ ! [X2: $i] :
                                                                                      ~ ! [X3: $i] :
                                                                                          ( ( X1 @ X3 )
                                                                                          = ( X3 = X2 ) ) )
                                                                           => ( ! [X1: $i] :
                                                                                  ( ( nonempty @ X1 )
                                                                                 => ~ ! [X2: $i] :
                                                                                        ~ ( in @ X2 @ X1 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                   => ( X1 = X2 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 != X2 )
                                                                                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                           => ( ( X3 != X1 )
                                                                                             => ( X3 = X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                 => ( ( dsetconstr @ X1 @ X2 )
                                                                                                   != emptyset ) )
                                                                                             => ( ! [X1: $i > $o,X2: $i] :
                                                                                                    ( ( in @ X2 @ emptyset )
                                                                                                   => ( X1 @ X2 ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) )
                                                                                                     => ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                       => ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                         => ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) )
                                                                                                           => ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $o] :
                                                                                                              ( X1
                                                                                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                         => ( ! [X1: $o] :
                                                                                                                ( X1
                                                                                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                                 => ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ~ ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( X2 @ X3 ) )
                                                                                                                   => ~ ! [X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                      ( ~ ! [X2: $i] :
                                                                                                                            ( ( X1 @ X2 )
                                                                                                                           => ~ ! [X3: $i] :
                                                                                                                                  ( ( X1 @ X3 )
                                                                                                                                 => ( X2 = X3 ) ) )
                                                                                                                     => ( exu @ X1 ) )
                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                        ( ~ ! [X2: $i] :
                                                                                                                              ~ ( X1 @ X2 )
                                                                                                                       => ( ! [X2: $i,X3: $i] :
                                                                                                                              ( ( X1 @ X2 )
                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                               => ( X2 = X3 ) ) )
                                                                                                                         => ( exu @ X1 ) ) )
                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                                ~ ! [X3: $i] :
                                                                                                                                    ( ( X1 @ X3 )
                                                                                                                                    = ( X3 = X2 ) )
                                                                                                                         => ( exu @ X1 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                                ( ( X3 = X4 )
                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ( exu @ X1 )
                                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                                    ( ( X1 @ X2 )
                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                                                 => ( ( exu @ X1 )
                                                                                                                                    = ( exu @ X2 ) ) )
                                                                                                                             => ( ( emptyset = emptyset )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ( ( powerset @ X1 )
                                                                                                                                          = ( powerset @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ( ( setunion @ X1 )
                                                                                                                                            = ( setunion @ X2 ) ) )
                                                                                                                                     => ( ( omega = omega )
                                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                                              ( ( exu @ X1 )
                                                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                                                  ( ( X1 @ X2 )
                                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                                                               => ( ( exu @ X1 )
                                                                                                                                                 => ( ( exu @ X2 )
                                                                                                                                                   => ( ( descr @ X1 )
                                                                                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                      ( ! [X5: $i] :
                                                                                                                                                          ( ( in @ X5 @ X1 )
                                                                                                                                                         => ! [X6: $i] :
                                                                                                                                                              ( ( in @ X6 @ X2 )
                                                                                                                                                             => ( ( X5 = X6 )
                                                                                                                                                               => ( ( X3 @ X5 )
                                                                                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                             => ( sP26
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                                                                                   => ( sP26
                                                                                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( X1 != X2 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                       => ( X1 != X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                         => ( sP1
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                   => ( X1 = emptyset ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => X4 )
                                                                                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                             => X4 )
                                                                                                                                                                                                           => X4 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                 => ( in @ X3
                                                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                 => ( subset @ X3
                                                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h14,assumption,
    ! [X1: $i] :
      ( ( in @ X1 @ omega )
     => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) ),
    introduced(assumption,[]) ).

thf(h15,assumption,
    ~ ( ! [X1: $i] :
          ( ~ ( ( in @ emptyset @ X1 )
             => ~ ! [X2: $i] :
                    ( ~ ( ( in @ X2 @ omega )
                       => ~ ( in @ X2 @ X1 ) )
                   => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
         => ! [X2: $i] :
              ( ( in @ X2 @ omega )
             => ( in @ X2 @ X1 ) ) )
     => ( ! [X1: $i > $i > $o,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( exu @ ( X1 @ X3 ) ) )
           => ~ ! [X3: $i] :
                  ~ ! [X4: $i] :
                      ( ( in @ X4 @ X3 )
                      = ( ~ ! [X5: $i] :
                              ( ( in @ X5 @ X2 )
                             => ~ ( X1 @ X5 @ X4 ) ) ) ) )
       => ( ! [X1: $i] :
              ( ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
             => ~ ! [X2: $i] :
                    ( ( in @ X2 @ X1 )
                   => ~ ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ~ ( in @ X3 @ X1 ) ) ) )
         => ( ! [X1: $i] :
                ~ ! [X2: $i] :
                    ( ~ ( ~ ( ! [X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ! [X4: $i] :
                                    ( ( in @ X4 @ X3 )
                                   => ( in @ X4 @ X1 ) ) )
                           => ~ ! [X3: $i,X4: $i] :
                                  ( ~ ( ( in @ X3 @ X1 )
                                     => ~ ( in @ X4 @ X1 ) )
                                 => ( ! [X5: $i] :
                                        ( ( in @ X5 @ X2 )
                                       => ( ( in @ X3 @ X5 )
                                          = ( in @ X4 @ X5 ) ) )
                                   => ( X3 = X4 ) ) ) )
                       => ~ ! [X3: $i,X4: $i] :
                              ( ~ ( ( in @ X3 @ X2 )
                                 => ~ ( in @ X4 @ X2 ) )
                             => ( ~ ! [X5: $i] :
                                      ( ( in @ X5 @ X3 )
                                     => ( in @ X5 @ X4 ) )
                               => ! [X5: $i] :
                                    ( ( in @ X5 @ X4 )
                                   => ( in @ X5 @ X3 ) ) ) ) )
                   => ~ ! [X3: $i] :
                          ( ~ ( ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                 => ( in @ X4 @ X1 ) )
                             => ! [X4: $i] :
                                  ~ ( in @ X4 @ X3 ) )
                         => ~ ! [X4: $i,X5: $i] :
                                ( ~ ( ~ ( ( in @ X4 @ X2 )
                                       => ~ ( in @ X5 @ X3 ) )
                                   => ~ ! [X6: $i] :
                                          ( ( in @ X6 @ X4 )
                                         => ~ ( in @ X6 @ X3 ) ) )
                               => ~ ! [X6: $i] :
                                      ( ( in @ X6 @ X2 )
                                     => ( ~ ! [X7: $i] :
                                              ( ( in @ X7 @ X6 )
                                             => ( in @ X7 @ X4 ) )
                                       => ( in @ X5 @ X6 ) ) ) ) ) )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ( X1 @ ( descr @ X1 ) ) )
             => ( sP3
               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                     => ( in @ X3 @ X1 ) )
                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                        ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                       => ( X2 @ X3 ) )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ~ ! [X2: $i] :
                                ( ( X1 @ X2 )
                               => ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) ) )
                     => ( ! [X1: $o,X2: $i] :
                            ( ( in @ X2 @ ( prop2set @ X1 ) )
                           => X1 )
                       => ( ! [X1: $i] :
                              ( ( in @ X1 @ emptyset )
                             => ! [X2: $o] : X2 )
                         => ( ! [X1: $i] :
                                ~ ( in @ X1 @ emptyset )
                           => ( ! [X1: $i] :
                                  ~ ( in @ X1 @ emptyset )
                             => ( ! [X1: $i > $o] :
                                    ( ( exu @ X1 )
                                   => ~ ! [X2: $i] :
                                          ~ ( X1 @ X2 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( in @ X3 @ X2 ) )
                                     => ( ! [X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ( in @ X3 @ X1 ) )
                                       => ( X1 = X2 ) ) )
                                 => ( ! [X1: $i] :
                                        ( ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 )
                                       => ( X1 = emptyset ) )
                                   => ( ! [X1: $i] :
                                          ( ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 )
                                         => ( X1 = emptyset ) )
                                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                              = ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i] :
                                              ( ( nonempty @ X1 )
                                             => ~ ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 ) )
                                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ( X2 @ X3 )
                                                 => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ~ ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 )
                                                 => ( nonempty @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                               => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                         => ! [X4: $o] :
                                                              ( ( ( X3 = X1 )
                                                               => X4 )
                                                             => ( ( ( in @ X3 @ X2 )
                                                                 => X4 )
                                                               => X4 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ( ( X3 != X1 )
                                                             => ( in @ X3 @ X2 ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ( dsetconstr @ X1
                                                                @ ^ [X2: $i] : ~ $false )
                                                              = X1 )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ! [X3: $i] :
                                                                    ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3 @ X1 ) )
                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                               => ( sP7
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X2 @ X3 )
                                                                       => ( ( in @ X3 @ X1 )
                                                                         => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                         => ! [X3: $o] :
                                                                              ( ! [X4: $i] :
                                                                                  ( ( in @ X2 @ X4 )
                                                                                 => ( ( in @ X4 @ X1 )
                                                                                   => X3 ) )
                                                                             => X3 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( in @ X2 @ X1 )
                                                                           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ( exu @ X1 )
                                                                             => ~ ! [X2: $i] :
                                                                                    ~ ! [X3: $i] :
                                                                                        ( ( X1 @ X3 )
                                                                                        = ( X3 = X2 ) ) )
                                                                         => ( ! [X1: $i] :
                                                                                ( ( nonempty @ X1 )
                                                                               => ~ ! [X2: $i] :
                                                                                      ~ ( in @ X2 @ X1 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                 => ( X1 = X2 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 != X2 )
                                                                                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                         => ( ( X3 != X1 )
                                                                                           => ( X3 = X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                               => ( ( dsetconstr @ X1 @ X2 )
                                                                                                 != emptyset ) )
                                                                                           => ( ! [X1: $i > $o,X2: $i] :
                                                                                                  ( ( in @ X2 @ emptyset )
                                                                                                 => ( X1 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) )
                                                                                                   => ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                     => ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                       => ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) )
                                                                                                         => ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $o] :
                                                                                                            ( X1
                                                                                                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                       => ( ! [X1: $o] :
                                                                                                              ( X1
                                                                                                             => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                                               => ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) )
                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                          ( ( X1 @ X2 )
                                                                                                                         => ~ ! [X3: $i] :
                                                                                                                                ( ( X1 @ X3 )
                                                                                                                               => ( X2 = X3 ) ) )
                                                                                                                   => ( exu @ X1 ) )
                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                      ( ~ ! [X2: $i] :
                                                                                                                            ~ ( X1 @ X2 )
                                                                                                                     => ( ! [X2: $i,X3: $i] :
                                                                                                                            ( ( X1 @ X2 )
                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                             => ( X2 = X3 ) ) )
                                                                                                                       => ( exu @ X1 ) ) )
                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                        ( ~ ! [X2: $i] :
                                                                                                                              ~ ! [X3: $i] :
                                                                                                                                  ( ( X1 @ X3 )
                                                                                                                                  = ( X3 = X2 ) )
                                                                                                                       => ( exu @ X1 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                                              ( ( X3 = X4 )
                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                               => ( in @ X4 @ X2 ) ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                                ( ( X3 = X4 )
                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                  = ( in @ X4 @ X2 ) ) ) )
                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                              ( ( exu @ X1 )
                                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                                  ( ( X1 @ X2 )
                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                                               => ( ( exu @ X1 )
                                                                                                                                  = ( exu @ X2 ) ) )
                                                                                                                           => ( ( emptyset = emptyset )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                       => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ( ( powerset @ X1 )
                                                                                                                                        = ( powerset @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ( ( setunion @ X1 )
                                                                                                                                          = ( setunion @ X2 ) ) )
                                                                                                                                   => ( ( omega = omega )
                                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                                            ( ( exu @ X1 )
                                                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                                                ( ( X1 @ X2 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                                                             => ( ( exu @ X1 )
                                                                                                                                               => ( ( exu @ X2 )
                                                                                                                                                 => ( ( descr @ X1 )
                                                                                                                                                    = ( descr @ X2 ) ) ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                    ( ! [X5: $i] :
                                                                                                                                                        ( ( in @ X5 @ X1 )
                                                                                                                                                       => ! [X6: $i] :
                                                                                                                                                            ( ( in @ X6 @ X2 )
                                                                                                                                                           => ( ( X5 = X6 )
                                                                                                                                                             => ( ( X3 @ X5 )
                                                                                                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                           => ( sP26
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                                                                                 => ( sP26
                                                                                                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( X1 != X2 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                     => ( X1 != X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ X3 )
                                                                                                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                       => ( sP1
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                 => ( X1 = X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                 => ( X1 = emptyset ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                         => X4 )
                                                                                                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                           => X4 )
                                                                                                                                                                                                         => X4 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                               => ( in @ X3
                                                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                               => ( subset @ X3
                                                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h16,assumption,
    ! [X1: $i] :
      ( ~ ( ( in @ emptyset @ X1 )
         => ~ ! [X2: $i] :
                ( ~ ( ( in @ X2 @ omega )
                   => ~ ( in @ X2 @ X1 ) )
               => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
     => ! [X2: $i] :
          ( ( in @ X2 @ omega )
         => ( in @ X2 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h17,assumption,
    ~ ( ! [X1: $i > $i > $o,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( exu @ ( X1 @ X3 ) ) )
         => ~ ! [X3: $i] :
                ~ ! [X4: $i] :
                    ( ( in @ X4 @ X3 )
                    = ( ~ ! [X5: $i] :
                            ( ( in @ X5 @ X2 )
                           => ~ ( X1 @ X5 @ X4 ) ) ) ) )
     => ( ! [X1: $i] :
            ( ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
           => ~ ! [X2: $i] :
                  ( ( in @ X2 @ X1 )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ~ ( in @ X3 @ X1 ) ) ) )
       => ( ! [X1: $i] :
              ~ ! [X2: $i] :
                  ( ~ ( ~ ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                 => ( in @ X4 @ X1 ) ) )
                         => ~ ! [X3: $i,X4: $i] :
                                ( ~ ( ( in @ X3 @ X1 )
                                   => ~ ( in @ X4 @ X1 ) )
                               => ( ! [X5: $i] :
                                      ( ( in @ X5 @ X2 )
                                     => ( ( in @ X3 @ X5 )
                                        = ( in @ X4 @ X5 ) ) )
                                 => ( X3 = X4 ) ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X2 )
                               => ~ ( in @ X4 @ X2 ) )
                           => ( ~ ! [X5: $i] :
                                    ( ( in @ X5 @ X3 )
                                   => ( in @ X5 @ X4 ) )
                             => ! [X5: $i] :
                                  ( ( in @ X5 @ X4 )
                                 => ( in @ X5 @ X3 ) ) ) ) )
                 => ~ ! [X3: $i] :
                        ( ~ ( ! [X4: $i] :
                                ( ( in @ X4 @ X3 )
                               => ( in @ X4 @ X1 ) )
                           => ! [X4: $i] :
                                ~ ( in @ X4 @ X3 ) )
                       => ~ ! [X4: $i,X5: $i] :
                              ( ~ ( ~ ( ( in @ X4 @ X2 )
                                     => ~ ( in @ X5 @ X3 ) )
                                 => ~ ! [X6: $i] :
                                        ( ( in @ X6 @ X4 )
                                       => ~ ( in @ X6 @ X3 ) ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X2 )
                                   => ( ~ ! [X7: $i] :
                                            ( ( in @ X7 @ X6 )
                                           => ( in @ X7 @ X4 ) )
                                     => ( in @ X5 @ X6 ) ) ) ) ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ( X1 @ ( descr @ X1 ) ) )
           => ( sP3
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                   => ( in @ X3 @ X1 ) )
               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                     => ( X2 @ X3 ) )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ~ ! [X2: $i] :
                              ( ( X1 @ X2 )
                             => ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) ) )
                   => ( ! [X1: $o,X2: $i] :
                          ( ( in @ X2 @ ( prop2set @ X1 ) )
                         => X1 )
                     => ( ! [X1: $i] :
                            ( ( in @ X1 @ emptyset )
                           => ! [X2: $o] : X2 )
                       => ( ! [X1: $i] :
                              ~ ( in @ X1 @ emptyset )
                         => ( ! [X1: $i] :
                                ~ ( in @ X1 @ emptyset )
                           => ( ! [X1: $i > $o] :
                                  ( ( exu @ X1 )
                                 => ~ ! [X2: $i] :
                                        ~ ( X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( in @ X3 @ X2 ) )
                                   => ( ! [X3: $i] :
                                          ( ( in @ X3 @ X2 )
                                         => ( in @ X3 @ X1 ) )
                                     => ( X1 = X2 ) ) )
                               => ( ! [X1: $i] :
                                      ( ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 )
                                     => ( X1 = emptyset ) )
                                 => ( ! [X1: $i] :
                                        ( ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 )
                                       => ( X1 = emptyset ) )
                                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                            = ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i] :
                                            ( ( nonempty @ X1 )
                                           => ~ ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 ) )
                                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( ( X2 @ X3 )
                                               => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                         => ( ! [X1: $i] :
                                                ( ~ ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 )
                                               => ( nonempty @ X1 ) )
                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                             => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X2 )
                                                     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                       => ! [X4: $o] :
                                                            ( ( ( X3 = X1 )
                                                             => X4 )
                                                           => ( ( ( in @ X3 @ X2 )
                                                               => X4 )
                                                             => X4 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                         => ( ( X3 != X1 )
                                                           => ( in @ X3 @ X2 ) ) )
                                                     => ( ! [X1: $i] :
                                                            ( ( dsetconstr @ X1
                                                              @ ^ [X2: $i] : ~ $false )
                                                            = X1 )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ! [X3: $i] :
                                                                  ( ( in @ X3 @ X2 )
                                                                 => ( in @ X3 @ X1 ) )
                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                             => ( sP7
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X2 @ X3 )
                                                                     => ( ( in @ X3 @ X1 )
                                                                       => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                       => ! [X3: $o] :
                                                                            ( ! [X4: $i] :
                                                                                ( ( in @ X2 @ X4 )
                                                                               => ( ( in @ X4 @ X1 )
                                                                                 => X3 ) )
                                                                           => X3 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( in @ X2 @ X1 )
                                                                         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ( exu @ X1 )
                                                                           => ~ ! [X2: $i] :
                                                                                  ~ ! [X3: $i] :
                                                                                      ( ( X1 @ X3 )
                                                                                      = ( X3 = X2 ) ) )
                                                                       => ( ! [X1: $i] :
                                                                              ( ( nonempty @ X1 )
                                                                             => ~ ! [X2: $i] :
                                                                                    ~ ( in @ X2 @ X1 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                               => ( X1 = X2 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 != X2 )
                                                                                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                       => ( ( X3 != X1 )
                                                                                         => ( X3 = X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                             => ( ( dsetconstr @ X1 @ X2 )
                                                                                               != emptyset ) )
                                                                                         => ( ! [X1: $i > $o,X2: $i] :
                                                                                                ( ( in @ X2 @ emptyset )
                                                                                               => ( X1 @ X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) )
                                                                                                 => ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                   => ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                     => ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) )
                                                                                                       => ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $o] :
                                                                                                          ( X1
                                                                                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                     => ( ! [X1: $o] :
                                                                                                            ( X1
                                                                                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                             => ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                        ( ( X1 @ X2 )
                                                                                                                       => ~ ! [X3: $i] :
                                                                                                                              ( ( X1 @ X3 )
                                                                                                                             => ( X2 = X3 ) ) )
                                                                                                                 => ( exu @ X1 ) )
                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                          ~ ( X1 @ X2 )
                                                                                                                   => ( ! [X2: $i,X3: $i] :
                                                                                                                          ( ( X1 @ X2 )
                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                                     => ( exu @ X1 ) ) )
                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                      ( ~ ! [X2: $i] :
                                                                                                                            ~ ! [X3: $i] :
                                                                                                                                ( ( X1 @ X3 )
                                                                                                                                = ( X3 = X2 ) )
                                                                                                                     => ( exu @ X1 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                            ( ( X3 = X4 )
                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X4 @ X2 ) ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                                              ( ( X3 = X4 )
                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                                = ( in @ X4 @ X2 ) ) ) )
                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                            ( ( exu @ X1 )
                                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                                ( ( X1 @ X2 )
                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                                             => ( ( exu @ X1 )
                                                                                                                                = ( exu @ X2 ) ) )
                                                                                                                         => ( ( emptyset = emptyset )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ( ( powerset @ X1 )
                                                                                                                                      = ( powerset @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ( ( setunion @ X1 )
                                                                                                                                        = ( setunion @ X2 ) ) )
                                                                                                                                 => ( ( omega = omega )
                                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                                          ( ( exu @ X1 )
                                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                                              ( ( X1 @ X2 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                                           => ( ( exu @ X1 )
                                                                                                                                             => ( ( exu @ X2 )
                                                                                                                                               => ( ( descr @ X1 )
                                                                                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                  ( ! [X5: $i] :
                                                                                                                                                      ( ( in @ X5 @ X1 )
                                                                                                                                                     => ! [X6: $i] :
                                                                                                                                                          ( ( in @ X6 @ X2 )
                                                                                                                                                         => ( ( X5 = X6 )
                                                                                                                                                           => ( ( X3 @ X5 )
                                                                                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                         => ( sP26
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                                                               => ( sP26
                                                                                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                               => ( X1 != X2 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                   => ( X1 != X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                     => ( sP1
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                                                                                               => ( X1 = X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                                                                                               => ( X1 = emptyset ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                         => X4 )
                                                                                                                                                                                                       => X4 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                             => ( in @ X3
                                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                             => ( subset @ X3
                                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h18,assumption,
    ! [X1: $i > $i > $o,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( exu @ ( X1 @ X3 ) ) )
     => ~ ! [X3: $i] :
            ~ ! [X4: $i] :
                ( ( in @ X4 @ X3 )
                = ( ~ ! [X5: $i] :
                        ( ( in @ X5 @ X2 )
                       => ~ ( X1 @ X5 @ X4 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h19,assumption,
    ~ ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ~ ! [X2: $i] :
                ( ( in @ X2 @ X1 )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ X1 ) ) ) )
     => ( ! [X1: $i] :
            ~ ! [X2: $i] :
                ( ~ ( ~ ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ! [X4: $i] :
                                ( ( in @ X4 @ X3 )
                               => ( in @ X4 @ X1 ) ) )
                       => ~ ! [X3: $i,X4: $i] :
                              ( ~ ( ( in @ X3 @ X1 )
                                 => ~ ( in @ X4 @ X1 ) )
                             => ( ! [X5: $i] :
                                    ( ( in @ X5 @ X2 )
                                   => ( ( in @ X3 @ X5 )
                                      = ( in @ X4 @ X5 ) ) )
                               => ( X3 = X4 ) ) ) )
                   => ~ ! [X3: $i,X4: $i] :
                          ( ~ ( ( in @ X3 @ X2 )
                             => ~ ( in @ X4 @ X2 ) )
                         => ( ~ ! [X5: $i] :
                                  ( ( in @ X5 @ X3 )
                                 => ( in @ X5 @ X4 ) )
                           => ! [X5: $i] :
                                ( ( in @ X5 @ X4 )
                               => ( in @ X5 @ X3 ) ) ) ) )
               => ~ ! [X3: $i] :
                      ( ~ ( ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) )
                         => ! [X4: $i] :
                              ~ ( in @ X4 @ X3 ) )
                     => ~ ! [X4: $i,X5: $i] :
                            ( ~ ( ~ ( ( in @ X4 @ X2 )
                                   => ~ ( in @ X5 @ X3 ) )
                               => ~ ! [X6: $i] :
                                      ( ( in @ X6 @ X4 )
                                     => ~ ( in @ X6 @ X3 ) ) )
                           => ~ ! [X6: $i] :
                                  ( ( in @ X6 @ X2 )
                                 => ( ~ ! [X7: $i] :
                                          ( ( in @ X7 @ X6 )
                                         => ( in @ X7 @ X4 ) )
                                   => ( in @ X5 @ X6 ) ) ) ) ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ( X1 @ ( descr @ X1 ) ) )
         => ( sP3
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                 => ( in @ X3 @ X1 ) )
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                   => ( X2 @ X3 ) )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ~ ! [X2: $i] :
                            ( ( X1 @ X2 )
                           => ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) ) )
                 => ( ! [X1: $o,X2: $i] :
                        ( ( in @ X2 @ ( prop2set @ X1 ) )
                       => X1 )
                   => ( ! [X1: $i] :
                          ( ( in @ X1 @ emptyset )
                         => ! [X2: $o] : X2 )
                     => ( ! [X1: $i] :
                            ~ ( in @ X1 @ emptyset )
                       => ( ! [X1: $i] :
                              ~ ( in @ X1 @ emptyset )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ~ ! [X2: $i] :
                                      ~ ( X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( in @ X3 @ X2 ) )
                                 => ( ! [X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ( in @ X3 @ X1 ) )
                                   => ( X1 = X2 ) ) )
                             => ( ! [X1: $i] :
                                    ( ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 )
                                   => ( X1 = emptyset ) )
                               => ( ! [X1: $i] :
                                      ( ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 )
                                     => ( X1 = emptyset ) )
                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                          = ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i] :
                                          ( ( nonempty @ X1 )
                                         => ~ ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 ) )
                                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ( X2 @ X3 )
                                             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                       => ( ! [X1: $i] :
                                              ( ~ ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 )
                                             => ( nonempty @ X1 ) )
                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X2 )
                                                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                     => ! [X4: $o] :
                                                          ( ( ( X3 = X1 )
                                                           => X4 )
                                                         => ( ( ( in @ X3 @ X2 )
                                                             => X4 )
                                                           => X4 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                       => ( ( X3 != X1 )
                                                         => ( in @ X3 @ X2 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( dsetconstr @ X1
                                                            @ ^ [X2: $i] : ~ $false )
                                                          = X1 )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ! [X3: $i] :
                                                                ( ( in @ X3 @ X2 )
                                                               => ( in @ X3 @ X1 ) )
                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                           => ( sP7
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X2 @ X3 )
                                                                   => ( ( in @ X3 @ X1 )
                                                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                     => ! [X3: $o] :
                                                                          ( ! [X4: $i] :
                                                                              ( ( in @ X2 @ X4 )
                                                                             => ( ( in @ X4 @ X1 )
                                                                               => X3 ) )
                                                                         => X3 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( in @ X2 @ X1 )
                                                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ( exu @ X1 )
                                                                         => ~ ! [X2: $i] :
                                                                                ~ ! [X3: $i] :
                                                                                    ( ( X1 @ X3 )
                                                                                    = ( X3 = X2 ) ) )
                                                                     => ( ! [X1: $i] :
                                                                            ( ( nonempty @ X1 )
                                                                           => ~ ! [X2: $i] :
                                                                                  ~ ( in @ X2 @ X1 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                             => ( X1 = X2 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 != X2 )
                                                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ( X3 != X1 )
                                                                                       => ( X3 = X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                                                             != emptyset ) )
                                                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                                                              ( ( in @ X2 @ emptyset )
                                                                                             => ( X1 @ X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) )
                                                                                               => ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                 => ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                   => ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) )
                                                                                                     => ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $o] :
                                                                                                        ( X1
                                                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                   => ( ! [X1: $o] :
                                                                                                          ( X1
                                                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                           => ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) )
                                                                                                             => ~ ! [X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                      ( ( X1 @ X2 )
                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                            ( ( X1 @ X3 )
                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                               => ( exu @ X1 ) )
                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                        ~ ( X1 @ X2 )
                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                        ( ( X1 @ X2 )
                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                   => ( exu @ X1 ) ) )
                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                          ~ ! [X3: $i] :
                                                                                                                              ( ( X1 @ X3 )
                                                                                                                              = ( X3 = X2 ) )
                                                                                                                   => ( exu @ X1 ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                          ( ( X3 = X4 )
                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                            ( ( X3 = X4 )
                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                          ( ( exu @ X1 )
                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                              ( ( X1 @ X2 )
                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                ( ( X3 = X4 )
                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                           => ( ( exu @ X1 )
                                                                                                                              = ( exu @ X2 ) ) )
                                                                                                                       => ( ( emptyset = emptyset )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ( ( powerset @ X1 )
                                                                                                                                    = ( powerset @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ( ( setunion @ X1 )
                                                                                                                                      = ( setunion @ X2 ) ) )
                                                                                                                               => ( ( omega = omega )
                                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                                        ( ( exu @ X1 )
                                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                                            ( ( X1 @ X2 )
                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                                         => ( ( exu @ X1 )
                                                                                                                                           => ( ( exu @ X2 )
                                                                                                                                             => ( ( descr @ X1 )
                                                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                ( ! [X5: $i] :
                                                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                                                   => ! [X6: $i] :
                                                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                                                       => ( ( X5 = X6 )
                                                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                       => ( sP26
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                                                             => ( sP26
                                                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                             => ( X1 != X2 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                   => ( sP1
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h20,assumption,
    ! [X1: $i] :
      ( ~ ! [X2: $i] :
            ~ ( in @ X2 @ X1 )
     => ~ ! [X2: $i] :
            ( ( in @ X2 @ X1 )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ~ ( in @ X3 @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h21,assumption,
    ~ ( ! [X1: $i] :
          ~ ! [X2: $i] :
              ( ~ ( ~ ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ! [X4: $i] :
                              ( ( in @ X4 @ X3 )
                             => ( in @ X4 @ X1 ) ) )
                     => ~ ! [X3: $i,X4: $i] :
                            ( ~ ( ( in @ X3 @ X1 )
                               => ~ ( in @ X4 @ X1 ) )
                           => ( ! [X5: $i] :
                                  ( ( in @ X5 @ X2 )
                                 => ( ( in @ X3 @ X5 )
                                    = ( in @ X4 @ X5 ) ) )
                             => ( X3 = X4 ) ) ) )
                 => ~ ! [X3: $i,X4: $i] :
                        ( ~ ( ( in @ X3 @ X2 )
                           => ~ ( in @ X4 @ X2 ) )
                       => ( ~ ! [X5: $i] :
                                ( ( in @ X5 @ X3 )
                               => ( in @ X5 @ X4 ) )
                         => ! [X5: $i] :
                              ( ( in @ X5 @ X4 )
                             => ( in @ X5 @ X3 ) ) ) ) )
             => ~ ! [X3: $i] :
                    ( ~ ( ! [X4: $i] :
                            ( ( in @ X4 @ X3 )
                           => ( in @ X4 @ X1 ) )
                       => ! [X4: $i] :
                            ~ ( in @ X4 @ X3 ) )
                   => ~ ! [X4: $i,X5: $i] :
                          ( ~ ( ~ ( ( in @ X4 @ X2 )
                                 => ~ ( in @ X5 @ X3 ) )
                             => ~ ! [X6: $i] :
                                    ( ( in @ X6 @ X4 )
                                   => ~ ( in @ X6 @ X3 ) ) )
                         => ~ ! [X6: $i] :
                                ( ( in @ X6 @ X2 )
                               => ( ~ ! [X7: $i] :
                                        ( ( in @ X7 @ X6 )
                                       => ( in @ X7 @ X4 ) )
                                 => ( in @ X5 @ X6 ) ) ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ( X1 @ ( descr @ X1 ) ) )
       => ( sP3
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
               => ( in @ X3 @ X1 ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                 => ( X2 @ X3 ) )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ~ ! [X2: $i] :
                          ( ( X1 @ X2 )
                         => ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) ) )
               => ( ! [X1: $o,X2: $i] :
                      ( ( in @ X2 @ ( prop2set @ X1 ) )
                     => X1 )
                 => ( ! [X1: $i] :
                        ( ( in @ X1 @ emptyset )
                       => ! [X2: $o] : X2 )
                   => ( ! [X1: $i] :
                          ~ ( in @ X1 @ emptyset )
                     => ( ! [X1: $i] :
                            ~ ( in @ X1 @ emptyset )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ~ ! [X2: $i] :
                                    ~ ( X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( in @ X3 @ X2 ) )
                               => ( ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ X1 ) )
                                 => ( X1 = X2 ) ) )
                           => ( ! [X1: $i] :
                                  ( ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 )
                                 => ( X1 = emptyset ) )
                             => ( ! [X1: $i] :
                                    ( ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 )
                                   => ( X1 = emptyset ) )
                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                        = ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i] :
                                        ( ( nonempty @ X1 )
                                       => ~ ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 ) )
                                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( ( X2 @ X3 )
                                           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                     => ( ! [X1: $i] :
                                            ( ~ ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 )
                                           => ( nonempty @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                         => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X2 )
                                                 => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                   => ! [X4: $o] :
                                                        ( ( ( X3 = X1 )
                                                         => X4 )
                                                       => ( ( ( in @ X3 @ X2 )
                                                           => X4 )
                                                         => X4 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                     => ( ( X3 != X1 )
                                                       => ( in @ X3 @ X2 ) ) )
                                                 => ( ! [X1: $i] :
                                                        ( ( dsetconstr @ X1
                                                          @ ^ [X2: $i] : ~ $false )
                                                        = X1 )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ! [X3: $i] :
                                                              ( ( in @ X3 @ X2 )
                                                             => ( in @ X3 @ X1 ) )
                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                         => ( sP7
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X2 @ X3 )
                                                                 => ( ( in @ X3 @ X1 )
                                                                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                   => ! [X3: $o] :
                                                                        ( ! [X4: $i] :
                                                                            ( ( in @ X2 @ X4 )
                                                                           => ( ( in @ X4 @ X1 )
                                                                             => X3 ) )
                                                                       => X3 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( in @ X2 @ X1 )
                                                                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ( exu @ X1 )
                                                                       => ~ ! [X2: $i] :
                                                                              ~ ! [X3: $i] :
                                                                                  ( ( X1 @ X3 )
                                                                                  = ( X3 = X2 ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( nonempty @ X1 )
                                                                         => ~ ! [X2: $i] :
                                                                                ~ ( in @ X2 @ X1 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                           => ( X1 = X2 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 != X2 )
                                                                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                   => ( ( X3 != X1 )
                                                                                     => ( X3 = X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) )
                                                                                         => ( ( dsetconstr @ X1 @ X2 )
                                                                                           != emptyset ) )
                                                                                     => ( ! [X1: $i > $o,X2: $i] :
                                                                                            ( ( in @ X2 @ emptyset )
                                                                                           => ( X1 @ X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) )
                                                                                             => ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                               => ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                 => ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) )
                                                                                                   => ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $o] :
                                                                                                      ( X1
                                                                                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                 => ( ! [X1: $o] :
                                                                                                        ( X1
                                                                                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) )
                                                                                                         => ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) )
                                                                                                           => ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( X2 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                    ( ( X1 @ X2 )
                                                                                                                   => ~ ! [X3: $i] :
                                                                                                                          ( ( X1 @ X3 )
                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                             => ( exu @ X1 ) )
                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                      ~ ( X1 @ X2 )
                                                                                                               => ( ! [X2: $i,X3: $i] :
                                                                                                                      ( ( X1 @ X2 )
                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                       => ( X2 = X3 ) ) )
                                                                                                                 => ( exu @ X1 ) ) )
                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                        ~ ! [X3: $i] :
                                                                                                                            ( ( X1 @ X3 )
                                                                                                                            = ( X3 = X2 ) )
                                                                                                                 => ( exu @ X1 ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                        ( ( X3 = X4 )
                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                         => ( in @ X4 @ X2 ) ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                          ( ( X3 = X4 )
                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                            = ( in @ X4 @ X2 ) ) ) )
                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                        ( ( exu @ X1 )
                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                            ( ( X1 @ X2 )
                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                              ( ( X3 = X4 )
                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                         => ( ( exu @ X1 )
                                                                                                                            = ( exu @ X2 ) ) )
                                                                                                                     => ( ( emptyset = emptyset )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ( ( powerset @ X1 )
                                                                                                                                  = ( powerset @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ( ( setunion @ X1 )
                                                                                                                                    = ( setunion @ X2 ) ) )
                                                                                                                             => ( ( omega = omega )
                                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                                      ( ( exu @ X1 )
                                                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                                                          ( ( X1 @ X2 )
                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                                                       => ( ( exu @ X1 )
                                                                                                                                         => ( ( exu @ X2 )
                                                                                                                                           => ( ( descr @ X1 )
                                                                                                                                              = ( descr @ X2 ) ) ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                              ( ! [X5: $i] :
                                                                                                                                                  ( ( in @ X5 @ X1 )
                                                                                                                                                 => ! [X6: $i] :
                                                                                                                                                      ( ( in @ X6 @ X2 )
                                                                                                                                                     => ( ( X5 = X6 )
                                                                                                                                                       => ( ( X3 @ X5 )
                                                                                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                     => ( sP26
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                                                                           => ( sP26
                                                                                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                           => ( X1 != X2 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                               => ( X1 != X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                 => ( sP1
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                                                                                           => ( X1 = X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                                                                                           => ( X1 = emptyset ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                   => X4 )
                                                                                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                   => X4 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                         => ( in @ X3
                                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                         => ( subset @ X3
                                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h22,assumption,
    ! [X1: $i] :
      ~ ! [X2: $i] :
          ( ~ ( ~ ( ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ! [X4: $i] :
                          ( ( in @ X4 @ X3 )
                         => ( in @ X4 @ X1 ) ) )
                 => ~ ! [X3: $i,X4: $i] :
                        ( ~ ( ( in @ X3 @ X1 )
                           => ~ ( in @ X4 @ X1 ) )
                       => ( ! [X5: $i] :
                              ( ( in @ X5 @ X2 )
                             => ( ( in @ X3 @ X5 )
                                = ( in @ X4 @ X5 ) ) )
                         => ( X3 = X4 ) ) ) )
             => ~ ! [X3: $i,X4: $i] :
                    ( ~ ( ( in @ X3 @ X2 )
                       => ~ ( in @ X4 @ X2 ) )
                   => ( ~ ! [X5: $i] :
                            ( ( in @ X5 @ X3 )
                           => ( in @ X5 @ X4 ) )
                     => ! [X5: $i] :
                          ( ( in @ X5 @ X4 )
                         => ( in @ X5 @ X3 ) ) ) ) )
         => ~ ! [X3: $i] :
                ( ~ ( ! [X4: $i] :
                        ( ( in @ X4 @ X3 )
                       => ( in @ X4 @ X1 ) )
                   => ! [X4: $i] :
                        ~ ( in @ X4 @ X3 ) )
               => ~ ! [X4: $i,X5: $i] :
                      ( ~ ( ~ ( ( in @ X4 @ X2 )
                             => ~ ( in @ X5 @ X3 ) )
                         => ~ ! [X6: $i] :
                                ( ( in @ X6 @ X4 )
                               => ~ ( in @ X6 @ X3 ) ) )
                     => ~ ! [X6: $i] :
                            ( ( in @ X6 @ X2 )
                           => ( ~ ! [X7: $i] :
                                    ( ( in @ X7 @ X6 )
                                   => ( in @ X7 @ X4 ) )
                             => ( in @ X5 @ X6 ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h23,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ( X1 @ ( descr @ X1 ) ) )
     => ( sP3
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
             => ( in @ X3 @ X1 ) )
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
               => ( X2 @ X3 ) )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ~ ! [X2: $i] :
                        ( ( X1 @ X2 )
                       => ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) ) )
             => ( ! [X1: $o,X2: $i] :
                    ( ( in @ X2 @ ( prop2set @ X1 ) )
                   => X1 )
               => ( ! [X1: $i] :
                      ( ( in @ X1 @ emptyset )
                     => ! [X2: $o] : X2 )
                 => ( ! [X1: $i] :
                        ~ ( in @ X1 @ emptyset )
                   => ( ! [X1: $i] :
                          ~ ( in @ X1 @ emptyset )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ~ ! [X2: $i] :
                                  ~ ( X1 @ X2 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( in @ X3 @ X2 ) )
                             => ( ! [X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ( in @ X3 @ X1 ) )
                               => ( X1 = X2 ) ) )
                         => ( ! [X1: $i] :
                                ( ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 )
                               => ( X1 = emptyset ) )
                           => ( ! [X1: $i] :
                                  ( ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 )
                                 => ( X1 = emptyset ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                      = ( X2 @ X3 ) ) )
                               => ( ! [X1: $i] :
                                      ( ( nonempty @ X1 )
                                     => ~ ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 ) )
                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ( X2 @ X3 )
                                         => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                   => ( ! [X1: $i] :
                                          ( ~ ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 )
                                         => ( nonempty @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                       => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X2 )
                                               => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                 => ! [X4: $o] :
                                                      ( ( ( X3 = X1 )
                                                       => X4 )
                                                     => ( ( ( in @ X3 @ X2 )
                                                         => X4 )
                                                       => X4 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                   => ( ( X3 != X1 )
                                                     => ( in @ X3 @ X2 ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ( dsetconstr @ X1
                                                        @ ^ [X2: $i] : ~ $false )
                                                      = X1 )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ! [X3: $i] :
                                                            ( ( in @ X3 @ X2 )
                                                           => ( in @ X3 @ X1 ) )
                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                       => ( sP7
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X2 @ X3 )
                                                               => ( ( in @ X3 @ X1 )
                                                                 => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                 => ! [X3: $o] :
                                                                      ( ! [X4: $i] :
                                                                          ( ( in @ X2 @ X4 )
                                                                         => ( ( in @ X4 @ X1 )
                                                                           => X3 ) )
                                                                     => X3 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X2 @ X1 )
                                                                   => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ( exu @ X1 )
                                                                     => ~ ! [X2: $i] :
                                                                            ~ ! [X3: $i] :
                                                                                ( ( X1 @ X3 )
                                                                                = ( X3 = X2 ) ) )
                                                                 => ( ! [X1: $i] :
                                                                        ( ( nonempty @ X1 )
                                                                       => ~ ! [X2: $i] :
                                                                              ~ ( in @ X2 @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                         => ( X1 = X2 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 != X2 )
                                                                           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                 => ( ( X3 != X1 )
                                                                                   => ( X3 = X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) )
                                                                                       => ( ( dsetconstr @ X1 @ X2 )
                                                                                         != emptyset ) )
                                                                                   => ( ! [X1: $i > $o,X2: $i] :
                                                                                          ( ( in @ X2 @ emptyset )
                                                                                         => ( X1 @ X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) )
                                                                                           => ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                             => ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                               => ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) )
                                                                                                 => ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $o] :
                                                                                                    ( X1
                                                                                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                               => ( ! [X1: $o] :
                                                                                                      ( X1
                                                                                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) )
                                                                                                       => ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                                          ( ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) )
                                                                                                         => ~ ! [X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( X2 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                  ( ( X1 @ X2 )
                                                                                                                 => ~ ! [X3: $i] :
                                                                                                                        ( ( X1 @ X3 )
                                                                                                                       => ( X2 = X3 ) ) )
                                                                                                           => ( exu @ X1 ) )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                    ~ ( X1 @ X2 )
                                                                                                             => ( ! [X2: $i,X3: $i] :
                                                                                                                    ( ( X1 @ X2 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                     => ( X2 = X3 ) ) )
                                                                                                               => ( exu @ X1 ) ) )
                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                      ~ ! [X3: $i] :
                                                                                                                          ( ( X1 @ X3 )
                                                                                                                          = ( X3 = X2 ) )
                                                                                                               => ( exu @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                      ( ( X3 = X4 )
                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X4 @ X2 ) ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                        ( ( X3 = X4 )
                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                          = ( in @ X4 @ X2 ) ) ) )
                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                      ( ( exu @ X1 )
                                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                                          ( ( X1 @ X2 )
                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                                            ( ( X3 = X4 )
                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                                       => ( ( exu @ X1 )
                                                                                                                          = ( exu @ X2 ) ) )
                                                                                                                   => ( ( emptyset = emptyset )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                                ( ( X3 = X4 )
                                                                                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ( ( powerset @ X1 )
                                                                                                                                = ( powerset @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ( ( setunion @ X1 )
                                                                                                                                  = ( setunion @ X2 ) ) )
                                                                                                                           => ( ( omega = omega )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ( exu @ X1 )
                                                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                                                     => ( ( exu @ X1 )
                                                                                                                                       => ( ( exu @ X2 )
                                                                                                                                         => ( ( descr @ X1 )
                                                                                                                                            = ( descr @ X2 ) ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                            ( ! [X5: $i] :
                                                                                                                                                ( ( in @ X5 @ X1 )
                                                                                                                                               => ! [X6: $i] :
                                                                                                                                                    ( ( in @ X6 @ X2 )
                                                                                                                                                   => ( ( X5 = X6 )
                                                                                                                                                     => ( ( X3 @ X5 )
                                                                                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                   => ( sP26
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ( subset @ X1 @ X2 ) )
                                                                                                                                         => ( sP26
                                                                                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                         => ( X1 != X2 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                             => ( X1 != X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                               => ( sP1
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                                                                                         => ( X1 = emptyset ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                 => X4 )
                                                                                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                   => X4 )
                                                                                                                                                                                                 => X4 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                       => ( in @ X3
                                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                       => ( subset @ X3
                                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h24,assumption,
    ! [X1: $i > $o] :
      ( ( exu @ X1 )
     => ( X1 @ ( descr @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h25,assumption,
    ~ ( sP3
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
           => ( in @ X3 @ X1 ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
             => ( X2 @ X3 ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ~ ! [X2: $i] :
                      ( ( X1 @ X2 )
                     => ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) ) )
           => ( ! [X1: $o,X2: $i] :
                  ( ( in @ X2 @ ( prop2set @ X1 ) )
                 => X1 )
             => ( ! [X1: $i] :
                    ( ( in @ X1 @ emptyset )
                   => ! [X2: $o] : X2 )
               => ( ! [X1: $i] :
                      ~ ( in @ X1 @ emptyset )
                 => ( ! [X1: $i] :
                        ~ ( in @ X1 @ emptyset )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ~ ! [X2: $i] :
                                ~ ( X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( in @ X3 @ X2 ) )
                           => ( ! [X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ( in @ X3 @ X1 ) )
                             => ( X1 = X2 ) ) )
                       => ( ! [X1: $i] :
                              ( ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 )
                             => ( X1 = emptyset ) )
                         => ( ! [X1: $i] :
                                ( ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 )
                               => ( X1 = emptyset ) )
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                    = ( X2 @ X3 ) ) )
                             => ( ! [X1: $i] :
                                    ( ( nonempty @ X1 )
                                   => ~ ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 ) )
                               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( ( X2 @ X3 )
                                       => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                 => ( ! [X1: $i] :
                                        ( ~ ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 )
                                       => ( nonempty @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                     => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X2 )
                                             => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                               => ! [X4: $o] :
                                                    ( ( ( X3 = X1 )
                                                     => X4 )
                                                   => ( ( ( in @ X3 @ X2 )
                                                       => X4 )
                                                     => X4 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                 => ( ( X3 != X1 )
                                                   => ( in @ X3 @ X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ( dsetconstr @ X1
                                                      @ ^ [X2: $i] : ~ $false )
                                                    = X1 )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ! [X3: $i] :
                                                          ( ( in @ X3 @ X2 )
                                                         => ( in @ X3 @ X1 ) )
                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                     => ( sP7
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X2 @ X3 )
                                                             => ( ( in @ X3 @ X1 )
                                                               => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( in @ X2 @ ( setunion @ X1 ) )
                                                               => ! [X3: $o] :
                                                                    ( ! [X4: $i] :
                                                                        ( ( in @ X2 @ X4 )
                                                                       => ( ( in @ X4 @ X1 )
                                                                         => X3 ) )
                                                                   => X3 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X2 @ X1 )
                                                                 => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ( exu @ X1 )
                                                                   => ~ ! [X2: $i] :
                                                                          ~ ! [X3: $i] :
                                                                              ( ( X1 @ X3 )
                                                                              = ( X3 = X2 ) ) )
                                                               => ( ! [X1: $i] :
                                                                      ( ( nonempty @ X1 )
                                                                     => ~ ! [X2: $i] :
                                                                            ~ ( in @ X2 @ X1 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                       => ( X1 = X2 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 != X2 )
                                                                         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                               => ( ( X3 != X1 )
                                                                                 => ( X3 = X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) )
                                                                                     => ( ( dsetconstr @ X1 @ X2 )
                                                                                       != emptyset ) )
                                                                                 => ( ! [X1: $i > $o,X2: $i] :
                                                                                        ( ( in @ X2 @ emptyset )
                                                                                       => ( X1 @ X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) )
                                                                                         => ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) )
                                                                                           => ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                             => ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) )
                                                                                               => ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $o] :
                                                                                                  ( X1
                                                                                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                             => ( ! [X1: $o] :
                                                                                                    ( X1
                                                                                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) )
                                                                                                     => ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                                        ( ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) )
                                                                                                       => ~ ! [X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( X2 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                ( ( X1 @ X2 )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( X1 @ X3 )
                                                                                                                     => ( X2 = X3 ) ) )
                                                                                                         => ( exu @ X1 ) )
                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                  ~ ( X1 @ X2 )
                                                                                                           => ( ! [X2: $i,X3: $i] :
                                                                                                                  ( ( X1 @ X2 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                   => ( X2 = X3 ) ) )
                                                                                                             => ( exu @ X1 ) ) )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ~ ! [X2: $i] :
                                                                                                                    ~ ! [X3: $i] :
                                                                                                                        ( ( X1 @ X3 )
                                                                                                                        = ( X3 = X2 ) )
                                                                                                             => ( exu @ X1 ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                     => ( in @ X4 @ X2 ) ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                      ( ( X3 = X4 )
                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                        = ( in @ X4 @ X2 ) ) ) )
                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                    ( ( exu @ X1 )
                                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                                        ( ( X1 @ X2 )
                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                                          ( ( X3 = X4 )
                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                                     => ( ( exu @ X1 )
                                                                                                                        = ( exu @ X2 ) ) )
                                                                                                                 => ( ( emptyset = emptyset )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                                              ( ( X3 = X4 )
                                                                                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ( ( powerset @ X1 )
                                                                                                                              = ( powerset @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ( ( setunion @ X1 )
                                                                                                                                = ( setunion @ X2 ) ) )
                                                                                                                         => ( ( omega = omega )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ( exu @ X1 )
                                                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                                                        ( ( X3 = X4 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                                                   => ( ( exu @ X1 )
                                                                                                                                     => ( ( exu @ X2 )
                                                                                                                                       => ( ( descr @ X1 )
                                                                                                                                          = ( descr @ X2 ) ) ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                          ( ! [X5: $i] :
                                                                                                                                              ( ( in @ X5 @ X1 )
                                                                                                                                             => ! [X6: $i] :
                                                                                                                                                  ( ( in @ X6 @ X2 )
                                                                                                                                                 => ( ( X5 = X6 )
                                                                                                                                                   => ( ( X3 @ X5 )
                                                                                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                 => ( sP26
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                                                                       => ( sP26
                                                                                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                       => ( X1 != X2 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                           => ( X1 != X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                             => ( sP1
                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                                                                                       => ( X1 = emptyset ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                               => X4 )
                                                                                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                 => X4 )
                                                                                                                                                                                               => X4 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                     => ( in @ X3
                                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                     => ( subset @ X3
                                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h26,assumption,
    sP3,
    introduced(assumption,[]) ).

thf(h27,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( in @ X3 @ X1 ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
           => ( X2 @ X3 ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ~ ! [X2: $i] :
                    ( ( X1 @ X2 )
                   => ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) ) )
         => ( ! [X1: $o,X2: $i] :
                ( ( in @ X2 @ ( prop2set @ X1 ) )
               => X1 )
           => ( ! [X1: $i] :
                  ( ( in @ X1 @ emptyset )
                 => ! [X2: $o] : X2 )
             => ( ! [X1: $i] :
                    ~ ( in @ X1 @ emptyset )
               => ( ! [X1: $i] :
                      ~ ( in @ X1 @ emptyset )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ~ ! [X2: $i] :
                              ~ ( X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( in @ X3 @ X2 ) )
                         => ( ! [X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ( in @ X3 @ X1 ) )
                           => ( X1 = X2 ) ) )
                     => ( ! [X1: $i] :
                            ( ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                           => ( X1 = emptyset ) )
                       => ( ! [X1: $i] :
                              ( ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 )
                             => ( X1 = emptyset ) )
                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                  = ( X2 @ X3 ) ) )
                           => ( ! [X1: $i] :
                                  ( ( nonempty @ X1 )
                                 => ~ ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ( X2 @ X3 )
                                     => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                               => ( ! [X1: $i] :
                                      ( ~ ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 )
                                     => ( nonempty @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                   => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                             => ! [X4: $o] :
                                                  ( ( ( X3 = X1 )
                                                   => X4 )
                                                 => ( ( ( in @ X3 @ X2 )
                                                     => X4 )
                                                   => X4 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                               => ( ( X3 != X1 )
                                                 => ( in @ X3 @ X2 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ( dsetconstr @ X1
                                                    @ ^ [X2: $i] : ~ $false )
                                                  = X1 )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ X1 ) )
                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                   => ( sP7
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X2 @ X3 )
                                                           => ( ( in @ X3 @ X1 )
                                                             => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X2 @ ( setunion @ X1 ) )
                                                             => ! [X3: $o] :
                                                                  ( ! [X4: $i] :
                                                                      ( ( in @ X2 @ X4 )
                                                                     => ( ( in @ X4 @ X1 )
                                                                       => X3 ) )
                                                                 => X3 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( in @ X2 @ X1 )
                                                               => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ( exu @ X1 )
                                                                 => ~ ! [X2: $i] :
                                                                        ~ ! [X3: $i] :
                                                                            ( ( X1 @ X3 )
                                                                            = ( X3 = X2 ) ) )
                                                             => ( ! [X1: $i] :
                                                                    ( ( nonempty @ X1 )
                                                                   => ~ ! [X2: $i] :
                                                                          ~ ( in @ X2 @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                     => ( X1 = X2 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 != X2 )
                                                                       => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                             => ( ( X3 != X1 )
                                                                               => ( X3 = X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) )
                                                                                   => ( ( dsetconstr @ X1 @ X2 )
                                                                                     != emptyset ) )
                                                                               => ( ! [X1: $i > $o,X2: $i] :
                                                                                      ( ( in @ X2 @ emptyset )
                                                                                     => ( X1 @ X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) )
                                                                                       => ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) )
                                                                                         => ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) )
                                                                                           => ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) )
                                                                                             => ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $o] :
                                                                                                ( X1
                                                                                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                           => ( ! [X1: $o] :
                                                                                                  ( X1
                                                                                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                   => ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                      ( ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) )
                                                                                                     => ~ ! [X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                        ( ~ ! [X2: $i] :
                                                                                                              ( ( X1 @ X2 )
                                                                                                             => ~ ! [X3: $i] :
                                                                                                                    ( ( X1 @ X3 )
                                                                                                                   => ( X2 = X3 ) ) )
                                                                                                       => ( exu @ X1 ) )
                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                ~ ( X1 @ X2 )
                                                                                                         => ( ! [X2: $i,X3: $i] :
                                                                                                                ( ( X1 @ X2 )
                                                                                                               => ( ( X1 @ X3 )
                                                                                                                 => ( X2 = X3 ) ) )
                                                                                                           => ( exu @ X1 ) ) )
                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                            ( ~ ! [X2: $i] :
                                                                                                                  ~ ! [X3: $i] :
                                                                                                                      ( ( X1 @ X3 )
                                                                                                                      = ( X3 = X2 ) )
                                                                                                           => ( exu @ X1 ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                  ( ( X3 = X4 )
                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                   => ( in @ X4 @ X2 ) ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                      = ( in @ X4 @ X2 ) ) ) )
                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                  ( ( exu @ X1 )
                                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                                      ( ( X1 @ X2 )
                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                                        ( ( X3 = X4 )
                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                                   => ( ( exu @ X1 )
                                                                                                                      = ( exu @ X2 ) ) )
                                                                                                               => ( ( emptyset = emptyset )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                            ( ( X3 = X4 )
                                                                                                                           => ( ( setadjoin @ X1 @ X3 )
                                                                                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ( ( powerset @ X1 )
                                                                                                                            = ( powerset @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ( ( setunion @ X1 )
                                                                                                                              = ( setunion @ X2 ) ) )
                                                                                                                       => ( ( omega = omega )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ( exu @ X1 )
                                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                                    ( ( X1 @ X2 )
                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                                                      ( ( X3 = X4 )
                                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                                                 => ( ( exu @ X1 )
                                                                                                                                   => ( ( exu @ X2 )
                                                                                                                                     => ( ( descr @ X1 )
                                                                                                                                        = ( descr @ X2 ) ) ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                        ( ! [X5: $i] :
                                                                                                                                            ( ( in @ X5 @ X1 )
                                                                                                                                           => ! [X6: $i] :
                                                                                                                                                ( ( in @ X6 @ X2 )
                                                                                                                                               => ( ( X5 = X6 )
                                                                                                                                                 => ( ( X3 @ X5 )
                                                                                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                               => ( sP26
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( X1 = X2 )
                                                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                                                     => ( sP26
                                                                                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                     => ( X1 != X2 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                         => ( X1 != X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X3 )
                                                                                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                           => ( sP1
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                                                                                     => ( X1 = X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                                                                                     => ( X1 = emptyset ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                             => X4 )
                                                                                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                               => X4 )
                                                                                                                                                                                             => X4 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                   => ( in @ X3
                                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                   => ( subset @ X3
                                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h28,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
     => ( in @ X3 @ X1 ) ),
    introduced(assumption,[]) ).

thf(h29,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
         => ( X2 @ X3 ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ~ ! [X2: $i] :
                  ( ( X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) ) )
       => ( ! [X1: $o,X2: $i] :
              ( ( in @ X2 @ ( prop2set @ X1 ) )
             => X1 )
         => ( ! [X1: $i] :
                ( ( in @ X1 @ emptyset )
               => ! [X2: $o] : X2 )
           => ( ! [X1: $i] :
                  ~ ( in @ X1 @ emptyset )
             => ( ! [X1: $i] :
                    ~ ( in @ X1 @ emptyset )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ~ ! [X2: $i] :
                            ~ ( X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( in @ X3 @ X2 ) )
                       => ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ X1 ) )
                         => ( X1 = X2 ) ) )
                   => ( ! [X1: $i] :
                          ( ! [X2: $i] :
                              ~ ( in @ X2 @ X1 )
                         => ( X1 = emptyset ) )
                     => ( ! [X1: $i] :
                            ( ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                           => ( X1 = emptyset ) )
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                = ( X2 @ X3 ) ) )
                         => ( ! [X1: $i] :
                                ( ( nonempty @ X1 )
                               => ~ ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 ) )
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ( X2 @ X3 )
                                   => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                             => ( ! [X1: $i] :
                                    ( ~ ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 )
                                   => ( nonempty @ X1 ) )
                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                 => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X2 )
                                         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                           => ! [X4: $o] :
                                                ( ( ( X3 = X1 )
                                                 => X4 )
                                               => ( ( ( in @ X3 @ X2 )
                                                   => X4 )
                                                 => X4 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                             => ( ( X3 != X1 )
                                               => ( in @ X3 @ X2 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( dsetconstr @ X1
                                                  @ ^ [X2: $i] : ~ $false )
                                                = X1 )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X2 )
                                                     => ( in @ X3 @ X1 ) )
                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                 => ( sP7
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X2 @ X3 )
                                                         => ( ( in @ X3 @ X1 )
                                                           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( in @ X2 @ ( setunion @ X1 ) )
                                                           => ! [X3: $o] :
                                                                ( ! [X4: $i] :
                                                                    ( ( in @ X2 @ X4 )
                                                                   => ( ( in @ X4 @ X1 )
                                                                     => X3 ) )
                                                               => X3 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X2 @ X1 )
                                                             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ( exu @ X1 )
                                                               => ~ ! [X2: $i] :
                                                                      ~ ! [X3: $i] :
                                                                          ( ( X1 @ X3 )
                                                                          = ( X3 = X2 ) ) )
                                                           => ( ! [X1: $i] :
                                                                  ( ( nonempty @ X1 )
                                                                 => ~ ! [X2: $i] :
                                                                        ~ ( in @ X2 @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                   => ( X1 = X2 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 != X2 )
                                                                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                           => ( ( X3 != X1 )
                                                                             => ( X3 = X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) )
                                                                                 => ( ( dsetconstr @ X1 @ X2 )
                                                                                   != emptyset ) )
                                                                             => ( ! [X1: $i > $o,X2: $i] :
                                                                                    ( ( in @ X2 @ emptyset )
                                                                                   => ( X1 @ X2 ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) )
                                                                                     => ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) )
                                                                                       => ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) )
                                                                                         => ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) )
                                                                                           => ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $o] :
                                                                                              ( X1
                                                                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                         => ( ! [X1: $o] :
                                                                                                ( X1
                                                                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                 => ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                    ( ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) )
                                                                                                   => ~ ! [X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( X2 @ X3 ) ) )
                                                                                               => ( ! [X1: $i > $o] :
                                                                                                      ( ~ ! [X2: $i] :
                                                                                                            ( ( X1 @ X2 )
                                                                                                           => ~ ! [X3: $i] :
                                                                                                                  ( ( X1 @ X3 )
                                                                                                                 => ( X2 = X3 ) ) )
                                                                                                     => ( exu @ X1 ) )
                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                        ( ~ ! [X2: $i] :
                                                                                                              ~ ( X1 @ X2 )
                                                                                                       => ( ! [X2: $i,X3: $i] :
                                                                                                              ( ( X1 @ X2 )
                                                                                                             => ( ( X1 @ X3 )
                                                                                                               => ( X2 = X3 ) ) )
                                                                                                         => ( exu @ X1 ) ) )
                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                          ( ~ ! [X2: $i] :
                                                                                                                ~ ! [X3: $i] :
                                                                                                                    ( ( X1 @ X3 )
                                                                                                                    = ( X3 = X2 ) )
                                                                                                         => ( exu @ X1 ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                ( ( X3 = X4 )
                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                  ( ( X3 = X4 )
                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                ( ( exu @ X1 )
                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                    ( ( X1 @ X2 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                                      ( ( X3 = X4 )
                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                                 => ( ( exu @ X1 )
                                                                                                                    = ( exu @ X2 ) ) )
                                                                                                             => ( ( emptyset = emptyset )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                          ( ( X3 = X4 )
                                                                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ( ( powerset @ X1 )
                                                                                                                          = ( powerset @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ( ( setunion @ X1 )
                                                                                                                            = ( setunion @ X2 ) ) )
                                                                                                                     => ( ( omega = omega )
                                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                                              ( ( exu @ X1 )
                                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                                  ( ( X1 @ X2 )
                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                                               => ( ( exu @ X1 )
                                                                                                                                 => ( ( exu @ X2 )
                                                                                                                                   => ( ( descr @ X1 )
                                                                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                      ( ! [X5: $i] :
                                                                                                                                          ( ( in @ X5 @ X1 )
                                                                                                                                         => ! [X6: $i] :
                                                                                                                                              ( ( in @ X6 @ X2 )
                                                                                                                                             => ( ( X5 = X6 )
                                                                                                                                               => ( ( X3 @ X5 )
                                                                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                             => ( sP26
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                                                                   => ( sP26
                                                                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                   => ( X1 != X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                       => ( X1 != X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                         => ( sP1
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                                                                   => ( X1 = emptyset ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                           => X4 )
                                                                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                             => X4 )
                                                                                                                                                                                           => X4 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                 => ( in @ X3
                                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                 => ( subset @ X3
                                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h30,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
     => ( X2 @ X3 ) ),
    introduced(assumption,[]) ).

thf(h31,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) )
     => ( ! [X1: $o,X2: $i] :
            ( ( in @ X2 @ ( prop2set @ X1 ) )
           => X1 )
       => ( ! [X1: $i] :
              ( ( in @ X1 @ emptyset )
             => ! [X2: $o] : X2 )
         => ( ! [X1: $i] :
                ~ ( in @ X1 @ emptyset )
           => ( ! [X1: $i] :
                  ~ ( in @ X1 @ emptyset )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ~ ! [X2: $i] :
                          ~ ( X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( in @ X3 @ X2 ) )
                     => ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( in @ X3 @ X1 ) )
                       => ( X1 = X2 ) ) )
                 => ( ! [X1: $i] :
                        ( ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                       => ( X1 = emptyset ) )
                   => ( ! [X1: $i] :
                          ( ! [X2: $i] :
                              ~ ( in @ X2 @ X1 )
                         => ( X1 = emptyset ) )
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                              = ( X2 @ X3 ) ) )
                       => ( ! [X1: $i] :
                              ( ( nonempty @ X1 )
                             => ~ ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 ) )
                         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( ( X2 @ X3 )
                                 => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                           => ( ! [X1: $i] :
                                  ( ~ ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 )
                                 => ( nonempty @ X1 ) )
                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                               => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                         => ! [X4: $o] :
                                              ( ( ( X3 = X1 )
                                               => X4 )
                                             => ( ( ( in @ X3 @ X2 )
                                                 => X4 )
                                               => X4 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                           => ( ( X3 != X1 )
                                             => ( in @ X3 @ X2 ) ) )
                                       => ( ! [X1: $i] :
                                              ( ( dsetconstr @ X1
                                                @ ^ [X2: $i] : ~ $false )
                                              = X1 )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X2 )
                                                   => ( in @ X3 @ X1 ) )
                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                               => ( sP7
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X2 @ X3 )
                                                       => ( ( in @ X3 @ X1 )
                                                         => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                                         => ! [X3: $o] :
                                                              ( ! [X4: $i] :
                                                                  ( ( in @ X2 @ X4 )
                                                                 => ( ( in @ X4 @ X1 )
                                                                   => X3 ) )
                                                             => X3 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( in @ X2 @ X1 )
                                                           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ( exu @ X1 )
                                                             => ~ ! [X2: $i] :
                                                                    ~ ! [X3: $i] :
                                                                        ( ( X1 @ X3 )
                                                                        = ( X3 = X2 ) ) )
                                                         => ( ! [X1: $i] :
                                                                ( ( nonempty @ X1 )
                                                               => ~ ! [X2: $i] :
                                                                      ~ ( in @ X2 @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                 => ( X1 = X2 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 != X2 )
                                                                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                         => ( ( X3 != X1 )
                                                                           => ( X3 = X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) )
                                                                               => ( ( dsetconstr @ X1 @ X2 )
                                                                                 != emptyset ) )
                                                                           => ( ! [X1: $i > $o,X2: $i] :
                                                                                  ( ( in @ X2 @ emptyset )
                                                                                 => ( X1 @ X2 ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) )
                                                                                   => ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) )
                                                                                     => ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) )
                                                                                       => ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) )
                                                                                         => ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $o] :
                                                                                            ( X1
                                                                                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                       => ( ! [X1: $o] :
                                                                                              ( X1
                                                                                             => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) )
                                                                                               => ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                  ( ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) )
                                                                                                 => ~ ! [X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( X2 @ X3 ) ) )
                                                                                             => ( ! [X1: $i > $o] :
                                                                                                    ( ~ ! [X2: $i] :
                                                                                                          ( ( X1 @ X2 )
                                                                                                         => ~ ! [X3: $i] :
                                                                                                                ( ( X1 @ X3 )
                                                                                                               => ( X2 = X3 ) ) )
                                                                                                   => ( exu @ X1 ) )
                                                                                               => ( ! [X1: $i > $o] :
                                                                                                      ( ~ ! [X2: $i] :
                                                                                                            ~ ( X1 @ X2 )
                                                                                                     => ( ! [X2: $i,X3: $i] :
                                                                                                            ( ( X1 @ X2 )
                                                                                                           => ( ( X1 @ X3 )
                                                                                                             => ( X2 = X3 ) ) )
                                                                                                       => ( exu @ X1 ) ) )
                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                        ( ~ ! [X2: $i] :
                                                                                                              ~ ! [X3: $i] :
                                                                                                                  ( ( X1 @ X3 )
                                                                                                                  = ( X3 = X2 ) )
                                                                                                       => ( exu @ X1 ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                              ( ( X3 = X4 )
                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                               => ( in @ X4 @ X2 ) ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                ( ( X3 = X4 )
                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                  = ( in @ X4 @ X2 ) ) ) )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ( exu @ X1 )
                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                  ( ( X1 @ X2 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                               => ( ( exu @ X1 )
                                                                                                                  = ( exu @ X2 ) ) )
                                                                                                           => ( ( emptyset = emptyset )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                                        ( ( X3 = X4 )
                                                                                                                       => ( ( setadjoin @ X1 @ X3 )
                                                                                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ( ( powerset @ X1 )
                                                                                                                        = ( powerset @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ( ( setunion @ X1 )
                                                                                                                          = ( setunion @ X2 ) ) )
                                                                                                                   => ( ( omega = omega )
                                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                                            ( ( exu @ X1 )
                                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                                ( ( X1 @ X2 )
                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                                  ( ( X3 = X4 )
                                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                                             => ( ( exu @ X1 )
                                                                                                                               => ( ( exu @ X2 )
                                                                                                                                 => ( ( descr @ X1 )
                                                                                                                                    = ( descr @ X2 ) ) ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                    ( ! [X5: $i] :
                                                                                                                                        ( ( in @ X5 @ X1 )
                                                                                                                                       => ! [X6: $i] :
                                                                                                                                            ( ( in @ X6 @ X2 )
                                                                                                                                           => ( ( X5 = X6 )
                                                                                                                                             => ( ( X3 @ X5 )
                                                                                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                           => ( sP26
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                                                                 => ( sP26
                                                                                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                 => ( X1 != X2 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                     => ( X1 != X2 ) ) )
                                                                                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X3 )
                                                                                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                       => ( sP1
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                                                                                 => ( X1 = X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                                                                                 => ( X1 = emptyset ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                         => X4 )
                                                                                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                           => X4 )
                                                                                                                                                                                         => X4 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                                                                                               => ( in @ X3
                                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                               => ( subset @ X3
                                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h32,assumption,
    ! [X1: $i > $o] :
      ( ( exu @ X1 )
     => ~ ! [X2: $i] :
            ( ( X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) ) ),
    introduced(assumption,[]) ).

thf(h33,assumption,
    ~ ( ! [X1: $o,X2: $i] :
          ( ( in @ X2 @ ( prop2set @ X1 ) )
         => X1 )
     => ( ! [X1: $i] :
            ( ( in @ X1 @ emptyset )
           => ! [X2: $o] : X2 )
       => ( ! [X1: $i] :
              ~ ( in @ X1 @ emptyset )
         => ( ! [X1: $i] :
                ~ ( in @ X1 @ emptyset )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ~ ! [X2: $i] :
                        ~ ( X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( in @ X3 @ X2 ) )
                   => ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ X1 ) )
                     => ( X1 = X2 ) ) )
               => ( ! [X1: $i] :
                      ( ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                     => ( X1 = emptyset ) )
                 => ( ! [X1: $i] :
                        ( ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                       => ( X1 = emptyset ) )
                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                            = ( X2 @ X3 ) ) )
                     => ( ! [X1: $i] :
                            ( ( nonempty @ X1 )
                           => ~ ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 ) )
                       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ( X2 @ X3 )
                               => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                         => ( ! [X1: $i] :
                                ( ~ ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 )
                               => ( nonempty @ X1 ) )
                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                             => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                       => ! [X4: $o] :
                                            ( ( ( X3 = X1 )
                                             => X4 )
                                           => ( ( ( in @ X3 @ X2 )
                                               => X4 )
                                             => X4 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                         => ( ( X3 != X1 )
                                           => ( in @ X3 @ X2 ) ) )
                                     => ( ! [X1: $i] :
                                            ( ( dsetconstr @ X1
                                              @ ^ [X2: $i] : ~ $false )
                                            = X1 )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X2 )
                                                 => ( in @ X3 @ X1 ) )
                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                             => ( sP7
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X2 @ X3 )
                                                     => ( ( in @ X3 @ X1 )
                                                       => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( in @ X2 @ ( setunion @ X1 ) )
                                                       => ! [X3: $o] :
                                                            ( ! [X4: $i] :
                                                                ( ( in @ X2 @ X4 )
                                                               => ( ( in @ X4 @ X1 )
                                                                 => X3 ) )
                                                           => X3 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X2 @ X1 )
                                                         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ( exu @ X1 )
                                                           => ~ ! [X2: $i] :
                                                                  ~ ! [X3: $i] :
                                                                      ( ( X1 @ X3 )
                                                                      = ( X3 = X2 ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ( nonempty @ X1 )
                                                             => ~ ! [X2: $i] :
                                                                    ~ ( in @ X2 @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                               => ( X1 = X2 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 != X2 )
                                                                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ( X3 != X1 )
                                                                         => ( X3 = X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) )
                                                                             => ( ( dsetconstr @ X1 @ X2 )
                                                                               != emptyset ) )
                                                                         => ( ! [X1: $i > $o,X2: $i] :
                                                                                ( ( in @ X2 @ emptyset )
                                                                               => ( X1 @ X2 ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) )
                                                                                 => ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) )
                                                                                   => ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) )
                                                                                     => ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) )
                                                                                       => ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $o] :
                                                                                          ( X1
                                                                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                     => ( ! [X1: $o] :
                                                                                            ( X1
                                                                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                             => ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                ( ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) )
                                                                                               => ~ ! [X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( X2 @ X3 ) ) )
                                                                                           => ( ! [X1: $i > $o] :
                                                                                                  ( ~ ! [X2: $i] :
                                                                                                        ( ( X1 @ X2 )
                                                                                                       => ~ ! [X3: $i] :
                                                                                                              ( ( X1 @ X3 )
                                                                                                             => ( X2 = X3 ) ) )
                                                                                                 => ( exu @ X1 ) )
                                                                                             => ( ! [X1: $i > $o] :
                                                                                                    ( ~ ! [X2: $i] :
                                                                                                          ~ ( X1 @ X2 )
                                                                                                   => ( ! [X2: $i,X3: $i] :
                                                                                                          ( ( X1 @ X2 )
                                                                                                         => ( ( X1 @ X3 )
                                                                                                           => ( X2 = X3 ) ) )
                                                                                                     => ( exu @ X1 ) ) )
                                                                                               => ( ! [X1: $i > $o] :
                                                                                                      ( ~ ! [X2: $i] :
                                                                                                            ~ ! [X3: $i] :
                                                                                                                ( ( X1 @ X3 )
                                                                                                                = ( X3 = X2 ) )
                                                                                                     => ( exu @ X1 ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                            ( ( X3 = X4 )
                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                             => ( in @ X4 @ X2 ) ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                              ( ( X3 = X4 )
                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                = ( in @ X4 @ X2 ) ) ) )
                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                            ( ( exu @ X1 )
                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                ( ( X1 @ X2 )
                                                                                                               => ( ( X1 @ X3 )
                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                  ( ( X3 = X4 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                             => ( ( exu @ X1 )
                                                                                                                = ( exu @ X2 ) ) )
                                                                                                         => ( ( emptyset = emptyset )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                                      ( ( X3 = X4 )
                                                                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ( ( powerset @ X1 )
                                                                                                                      = ( powerset @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ( ( setunion @ X1 )
                                                                                                                        = ( setunion @ X2 ) ) )
                                                                                                                 => ( ( omega = omega )
                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                          ( ( exu @ X1 )
                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                              ( ( X1 @ X2 )
                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                ( ( X3 = X4 )
                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                           => ( ( exu @ X1 )
                                                                                                                             => ( ( exu @ X2 )
                                                                                                                               => ( ( descr @ X1 )
                                                                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                  ( ! [X5: $i] :
                                                                                                                                      ( ( in @ X5 @ X1 )
                                                                                                                                     => ! [X6: $i] :
                                                                                                                                          ( ( in @ X6 @ X2 )
                                                                                                                                         => ( ( X5 = X6 )
                                                                                                                                           => ( ( X3 @ X5 )
                                                                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                         => ( sP26
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                                               => ( sP26
                                                                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                                                                               => ( X1 != X2 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                   => ( X1 != X2 ) ) )
                                                                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                     => ( sP1
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                                                                               => ( X1 = X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                                                                               => ( X1 = emptyset ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                       => X4 )
                                                                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                         => X4 )
                                                                                                                                                                                       => X4 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                                                                             => ( in @ X3
                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                             => ( subset @ X3
                                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h34,assumption,
    ! [X1: $o,X2: $i] :
      ( ( in @ X2 @ ( prop2set @ X1 ) )
     => X1 ),
    introduced(assumption,[]) ).

thf(h35,assumption,
    ~ ( ! [X1: $i] :
          ( ( in @ X1 @ emptyset )
         => ! [X2: $o] : X2 )
     => ( ! [X1: $i] :
            ~ ( in @ X1 @ emptyset )
       => ( ! [X1: $i] :
              ~ ( in @ X1 @ emptyset )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) )
                 => ( ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( in @ X3 @ X1 ) )
                   => ( X1 = X2 ) ) )
             => ( ! [X1: $i] :
                    ( ! [X2: $i] :
                        ~ ( in @ X2 @ X1 )
                   => ( X1 = emptyset ) )
               => ( ! [X1: $i] :
                      ( ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                     => ( X1 = emptyset ) )
                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                          = ( X2 @ X3 ) ) )
                   => ( ! [X1: $i] :
                          ( ( nonempty @ X1 )
                         => ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 ) )
                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ( X2 @ X3 )
                             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                       => ( ! [X1: $i] :
                              ( ~ ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 )
                             => ( nonempty @ X1 ) )
                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                     => ! [X4: $o] :
                                          ( ( ( X3 = X1 )
                                           => X4 )
                                         => ( ( ( in @ X3 @ X2 )
                                             => X4 )
                                           => X4 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                       => ( ( X3 != X1 )
                                         => ( in @ X3 @ X2 ) ) )
                                   => ( ! [X1: $i] :
                                          ( ( dsetconstr @ X1
                                            @ ^ [X2: $i] : ~ $false )
                                          = X1 )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ! [X3: $i] :
                                                ( ( in @ X3 @ X2 )
                                               => ( in @ X3 @ X1 ) )
                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                           => ( sP7
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X2 @ X3 )
                                                   => ( ( in @ X3 @ X1 )
                                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                                     => ! [X3: $o] :
                                                          ( ! [X4: $i] :
                                                              ( ( in @ X2 @ X4 )
                                                             => ( ( in @ X4 @ X1 )
                                                               => X3 ) )
                                                         => X3 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( in @ X2 @ X1 )
                                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ( exu @ X1 )
                                                         => ~ ! [X2: $i] :
                                                                ~ ! [X3: $i] :
                                                                    ( ( X1 @ X3 )
                                                                    = ( X3 = X2 ) ) )
                                                     => ( ! [X1: $i] :
                                                            ( ( nonempty @ X1 )
                                                           => ~ ! [X2: $i] :
                                                                  ~ ( in @ X2 @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                             => ( X1 = X2 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 != X2 )
                                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ( X3 != X1 )
                                                                       => ( X3 = X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) )
                                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                                             != emptyset ) )
                                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                                              ( ( in @ X2 @ emptyset )
                                                                             => ( X1 @ X2 ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) )
                                                                               => ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) )
                                                                                 => ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) )
                                                                                   => ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) )
                                                                                     => ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $o] :
                                                                                        ( X1
                                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                   => ( ! [X1: $o] :
                                                                                          ( X1
                                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) )
                                                                                           => ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                              ( ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) )
                                                                                             => ~ ! [X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( X2 @ X3 ) ) )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ~ ! [X2: $i] :
                                                                                                      ( ( X1 @ X2 )
                                                                                                     => ~ ! [X3: $i] :
                                                                                                            ( ( X1 @ X3 )
                                                                                                           => ( X2 = X3 ) ) )
                                                                                               => ( exu @ X1 ) )
                                                                                           => ( ! [X1: $i > $o] :
                                                                                                  ( ~ ! [X2: $i] :
                                                                                                        ~ ( X1 @ X2 )
                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                        ( ( X1 @ X2 )
                                                                                                       => ( ( X1 @ X3 )
                                                                                                         => ( X2 = X3 ) ) )
                                                                                                   => ( exu @ X1 ) ) )
                                                                                             => ( ! [X1: $i > $o] :
                                                                                                    ( ~ ! [X2: $i] :
                                                                                                          ~ ! [X3: $i] :
                                                                                                              ( ( X1 @ X3 )
                                                                                                              = ( X3 = X2 ) )
                                                                                                   => ( exu @ X1 ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                            ( ( X3 = X4 )
                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                          ( ( exu @ X1 )
                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                              ( ( X1 @ X2 )
                                                                                                             => ( ( X1 @ X3 )
                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                ( ( X3 = X4 )
                                                                                                               => ( ( X1 @ X3 )
                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                           => ( ( exu @ X1 )
                                                                                                              = ( exu @ X2 ) ) )
                                                                                                       => ( ( emptyset = emptyset )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ( ( powerset @ X1 )
                                                                                                                    = ( powerset @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ( ( setunion @ X1 )
                                                                                                                      = ( setunion @ X2 ) ) )
                                                                                                               => ( ( omega = omega )
                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                        ( ( exu @ X1 )
                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                            ( ( X1 @ X2 )
                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                              ( ( X3 = X4 )
                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                         => ( ( exu @ X1 )
                                                                                                                           => ( ( exu @ X2 )
                                                                                                                             => ( ( descr @ X1 )
                                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                ( ! [X5: $i] :
                                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                                   => ! [X6: $i] :
                                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                                       => ( ( X5 = X6 )
                                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                       => ( sP26
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                                             => ( sP26
                                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                                             => ( X1 != X2 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                   => ( sP1
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                     => X4 )
                                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                       => X4 )
                                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h36,assumption,
    ! [X1: $i] :
      ( ( in @ X1 @ emptyset )
     => ! [X2: $o] : X2 ),
    introduced(assumption,[]) ).

thf(h37,assumption,
    ~ ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i] :
            ~ ( in @ X1 @ emptyset )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ~ ! [X2: $i] :
                    ~ ( X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( in @ X3 @ X2 ) )
               => ( ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ X1 ) )
                 => ( X1 = X2 ) ) )
           => ( ! [X1: $i] :
                  ( ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
                 => ( X1 = emptyset ) )
             => ( ! [X1: $i] :
                    ( ! [X2: $i] :
                        ~ ( in @ X2 @ X1 )
                   => ( X1 = emptyset ) )
               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                        = ( X2 @ X3 ) ) )
                 => ( ! [X1: $i] :
                        ( ( nonempty @ X1 )
                       => ~ ! [X2: $i] :
                              ~ ( in @ X2 @ X1 ) )
                   => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ( X2 @ X3 )
                           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                     => ( ! [X1: $i] :
                            ( ~ ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 )
                           => ( nonempty @ X1 ) )
                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                         => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                   => ! [X4: $o] :
                                        ( ( ( X3 = X1 )
                                         => X4 )
                                       => ( ( ( in @ X3 @ X2 )
                                           => X4 )
                                         => X4 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                     => ( ( X3 != X1 )
                                       => ( in @ X3 @ X2 ) ) )
                                 => ( ! [X1: $i] :
                                        ( ( dsetconstr @ X1
                                          @ ^ [X2: $i] : ~ $false )
                                        = X1 )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ! [X3: $i] :
                                              ( ( in @ X3 @ X2 )
                                             => ( in @ X3 @ X1 ) )
                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                         => ( sP7
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X2 @ X3 )
                                                 => ( ( in @ X3 @ X1 )
                                                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X2 @ ( setunion @ X1 ) )
                                                   => ! [X3: $o] :
                                                        ( ! [X4: $i] :
                                                            ( ( in @ X2 @ X4 )
                                                           => ( ( in @ X4 @ X1 )
                                                             => X3 ) )
                                                       => X3 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( in @ X2 @ X1 )
                                                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ( exu @ X1 )
                                                       => ~ ! [X2: $i] :
                                                              ~ ! [X3: $i] :
                                                                  ( ( X1 @ X3 )
                                                                  = ( X3 = X2 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( nonempty @ X1 )
                                                         => ~ ! [X2: $i] :
                                                                ~ ( in @ X2 @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                           => ( X1 = X2 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 != X2 )
                                                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                   => ( ( X3 != X1 )
                                                                     => ( X3 = X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) )
                                                                         => ( ( dsetconstr @ X1 @ X2 )
                                                                           != emptyset ) )
                                                                     => ( ! [X1: $i > $o,X2: $i] :
                                                                            ( ( in @ X2 @ emptyset )
                                                                           => ( X1 @ X2 ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) )
                                                                             => ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) )
                                                                               => ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) )
                                                                                 => ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) )
                                                                                   => ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $o] :
                                                                                      ( X1
                                                                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                 => ( ! [X1: $o] :
                                                                                        ( X1
                                                                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) )
                                                                                         => ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ~ ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                            ( ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) )
                                                                                           => ~ ! [X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( X2 @ X3 ) ) )
                                                                                       => ( ! [X1: $i > $o] :
                                                                                              ( ~ ! [X2: $i] :
                                                                                                    ( ( X1 @ X2 )
                                                                                                   => ~ ! [X3: $i] :
                                                                                                          ( ( X1 @ X3 )
                                                                                                         => ( X2 = X3 ) ) )
                                                                                             => ( exu @ X1 ) )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ~ ! [X2: $i] :
                                                                                                      ~ ( X1 @ X2 )
                                                                                               => ( ! [X2: $i,X3: $i] :
                                                                                                      ( ( X1 @ X2 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                       => ( X2 = X3 ) ) )
                                                                                                 => ( exu @ X1 ) ) )
                                                                                           => ( ! [X1: $i > $o] :
                                                                                                  ( ~ ! [X2: $i] :
                                                                                                        ~ ! [X3: $i] :
                                                                                                            ( ( X1 @ X3 )
                                                                                                            = ( X3 = X2 ) )
                                                                                                 => ( exu @ X1 ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                        ( ( X3 = X4 )
                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                         => ( in @ X4 @ X2 ) ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                            = ( in @ X4 @ X2 ) ) ) )
                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                        ( ( exu @ X1 )
                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                            ( ( X1 @ X2 )
                                                                                                           => ( ( X1 @ X3 )
                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                              ( ( X3 = X4 )
                                                                                                             => ( ( X1 @ X3 )
                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                         => ( ( exu @ X1 )
                                                                                                            = ( exu @ X2 ) ) )
                                                                                                     => ( ( emptyset = emptyset )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                                  ( ( X3 = X4 )
                                                                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ( ( powerset @ X1 )
                                                                                                                  = ( powerset @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ( ( setunion @ X1 )
                                                                                                                    = ( setunion @ X2 ) ) )
                                                                                                             => ( ( omega = omega )
                                                                                                               => ( ! [X1: $i > $o] :
                                                                                                                      ( ( exu @ X1 )
                                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                                          ( ( X1 @ X2 )
                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                                            ( ( X3 = X4 )
                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                                       => ( ( exu @ X1 )
                                                                                                                         => ( ( exu @ X2 )
                                                                                                                           => ( ( descr @ X1 )
                                                                                                                              = ( descr @ X2 ) ) ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                              ( ! [X5: $i] :
                                                                                                                                  ( ( in @ X5 @ X1 )
                                                                                                                                 => ! [X6: $i] :
                                                                                                                                      ( ( in @ X6 @ X2 )
                                                                                                                                     => ( ( X5 = X6 )
                                                                                                                                       => ( ( X3 @ X5 )
                                                                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                     => ( sP26
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( X1 = X2 )
                                                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                                                           => ( sP26
                                                                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                                                                           => ( X1 != X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                                               => ( X1 != X2 ) ) )
                                                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                 => ( sP1
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                                                                           => ( X1 = X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i] :
                                                                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                                                                           => ( X1 = emptyset ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => X4 )
                                                                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                     => X4 )
                                                                                                                                                                                   => X4 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                                                                         => ( in @ X3
                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                         => ( subset @ X3
                                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h38,assumption,
    ~ ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ~ ! [X2: $i] :
                  ~ ( X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( in @ X3 @ X2 ) )
             => ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ X1 ) )
               => ( X1 = X2 ) ) )
         => ( ! [X1: $i] :
                ( ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
               => ( X1 = emptyset ) )
           => ( ! [X1: $i] :
                  ( ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
                 => ( X1 = emptyset ) )
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                      = ( X2 @ X3 ) ) )
               => ( ! [X1: $i] :
                      ( ( nonempty @ X1 )
                     => ~ ! [X2: $i] :
                            ~ ( in @ X2 @ X1 ) )
                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( ( X2 @ X3 )
                         => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                   => ( ! [X1: $i] :
                          ( ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                         => ( nonempty @ X1 ) )
                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                       => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                 => ! [X4: $o] :
                                      ( ( ( X3 = X1 )
                                       => X4 )
                                     => ( ( ( in @ X3 @ X2 )
                                         => X4 )
                                       => X4 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                   => ( ( X3 != X1 )
                                     => ( in @ X3 @ X2 ) ) )
                               => ( ! [X1: $i] :
                                      ( ( dsetconstr @ X1
                                        @ ^ [X2: $i] : ~ $false )
                                      = X1 )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ! [X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ( in @ X3 @ X1 ) )
                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                       => ( sP7
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X2 @ X3 )
                                               => ( ( in @ X3 @ X1 )
                                                 => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( in @ X2 @ ( setunion @ X1 ) )
                                                 => ! [X3: $o] :
                                                      ( ! [X4: $i] :
                                                          ( ( in @ X2 @ X4 )
                                                         => ( ( in @ X4 @ X1 )
                                                           => X3 ) )
                                                     => X3 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X2 @ X1 )
                                                   => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                               => ( ! [X1: $i > $o] :
                                                      ( ( exu @ X1 )
                                                     => ~ ! [X2: $i] :
                                                            ~ ! [X3: $i] :
                                                                ( ( X1 @ X3 )
                                                                = ( X3 = X2 ) ) )
                                                 => ( ! [X1: $i] :
                                                        ( ( nonempty @ X1 )
                                                       => ~ ! [X2: $i] :
                                                              ~ ( in @ X2 @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                         => ( X1 = X2 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 != X2 )
                                                           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                 => ( ( X3 != X1 )
                                                                   => ( X3 = X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) )
                                                                       => ( ( dsetconstr @ X1 @ X2 )
                                                                         != emptyset ) )
                                                                   => ( ! [X1: $i > $o,X2: $i] :
                                                                          ( ( in @ X2 @ emptyset )
                                                                         => ( X1 @ X2 ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) )
                                                                           => ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) )
                                                                             => ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) )
                                                                               => ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) )
                                                                                 => ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $o] :
                                                                                    ( X1
                                                                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                               => ( ! [X1: $o] :
                                                                                      ( X1
                                                                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) )
                                                                                       => ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ~ ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                                          ( ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) )
                                                                                         => ~ ! [X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( X2 @ X3 ) ) )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ~ ! [X2: $i] :
                                                                                                  ( ( X1 @ X2 )
                                                                                                 => ~ ! [X3: $i] :
                                                                                                        ( ( X1 @ X3 )
                                                                                                       => ( X2 = X3 ) ) )
                                                                                           => ( exu @ X1 ) )
                                                                                       => ( ! [X1: $i > $o] :
                                                                                              ( ~ ! [X2: $i] :
                                                                                                    ~ ( X1 @ X2 )
                                                                                             => ( ! [X2: $i,X3: $i] :
                                                                                                    ( ( X1 @ X2 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                     => ( X2 = X3 ) ) )
                                                                                               => ( exu @ X1 ) ) )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ~ ! [X2: $i] :
                                                                                                      ~ ! [X3: $i] :
                                                                                                          ( ( X1 @ X3 )
                                                                                                          = ( X3 = X2 ) )
                                                                                               => ( exu @ X1 ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                       => ( in @ X4 @ X2 ) ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                        ( ( X3 = X4 )
                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                          = ( in @ X4 @ X2 ) ) ) )
                                                                                               => ( ! [X1: $i > $o] :
                                                                                                      ( ( exu @ X1 )
                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                          ( ( X1 @ X2 )
                                                                                                         => ( ( X1 @ X3 )
                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                            ( ( X3 = X4 )
                                                                                                           => ( ( X1 @ X3 )
                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                       => ( ( exu @ X1 )
                                                                                                          = ( exu @ X2 ) ) )
                                                                                                   => ( ( emptyset = emptyset )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                                ( ( X3 = X4 )
                                                                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ( ( powerset @ X1 )
                                                                                                                = ( powerset @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ( ( setunion @ X1 )
                                                                                                                  = ( setunion @ X2 ) ) )
                                                                                                           => ( ( omega = omega )
                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                    ( ( exu @ X1 )
                                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                                        ( ( X1 @ X2 )
                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                                          ( ( X3 = X4 )
                                                                                                                         => ( ( X1 @ X3 )
                                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                                     => ( ( exu @ X1 )
                                                                                                                       => ( ( exu @ X2 )
                                                                                                                         => ( ( descr @ X1 )
                                                                                                                            = ( descr @ X2 ) ) ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                            ( ! [X5: $i] :
                                                                                                                                ( ( in @ X5 @ X1 )
                                                                                                                               => ! [X6: $i] :
                                                                                                                                    ( ( in @ X6 @ X2 )
                                                                                                                                   => ( ( X5 = X6 )
                                                                                                                                     => ( ( X3 @ X5 )
                                                                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                   => ( sP26
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( X1 = X2 )
                                                                                                                             => ( subset @ X1 @ X2 ) )
                                                                                                                         => ( sP26
                                                                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                                                                         => ( X1 != X2 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                             => ( X1 != X2 ) ) )
                                                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                               => ( sP1
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i] :
                                                                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                                                                         => ( X1 = emptyset ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                 => X4 )
                                                                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                   => X4 )
                                                                                                                                                                                 => X4 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                                                       => ( in @ X3
                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                       => ( subset @ X3
                                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h39,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ( X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( in @ X3 @ X2 ) )
           => ( ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ X1 ) )
             => ( X1 = X2 ) ) )
       => ( ! [X1: $i] :
              ( ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
             => ( X1 = emptyset ) )
         => ( ! [X1: $i] :
                ( ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
               => ( X1 = emptyset ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                    = ( X2 @ X3 ) ) )
             => ( ! [X1: $i] :
                    ( ( nonempty @ X1 )
                   => ~ ! [X2: $i] :
                          ~ ( in @ X2 @ X1 ) )
               => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ( X2 @ X3 )
                       => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                 => ( ! [X1: $i] :
                        ( ~ ! [X2: $i] :
                              ~ ( in @ X2 @ X1 )
                       => ( nonempty @ X1 ) )
                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                     => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                               => ! [X4: $o] :
                                    ( ( ( X3 = X1 )
                                     => X4 )
                                   => ( ( ( in @ X3 @ X2 )
                                       => X4 )
                                     => X4 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                 => ( ( X3 != X1 )
                                   => ( in @ X3 @ X2 ) ) )
                             => ( ! [X1: $i] :
                                    ( ( dsetconstr @ X1
                                      @ ^ [X2: $i] : ~ $false )
                                    = X1 )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ! [X3: $i] :
                                          ( ( in @ X3 @ X2 )
                                         => ( in @ X3 @ X1 ) )
                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                     => ( sP7
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X2 @ X3 )
                                             => ( ( in @ X3 @ X1 )
                                               => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( in @ X2 @ ( setunion @ X1 ) )
                                               => ! [X3: $o] :
                                                    ( ! [X4: $i] :
                                                        ( ( in @ X2 @ X4 )
                                                       => ( ( in @ X4 @ X1 )
                                                         => X3 ) )
                                                   => X3 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( in @ X2 @ X1 )
                                                 => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                             => ( ! [X1: $i > $o] :
                                                    ( ( exu @ X1 )
                                                   => ~ ! [X2: $i] :
                                                          ~ ! [X3: $i] :
                                                              ( ( X1 @ X3 )
                                                              = ( X3 = X2 ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ( nonempty @ X1 )
                                                     => ~ ! [X2: $i] :
                                                            ~ ( in @ X2 @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                       => ( X1 = X2 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 != X2 )
                                                         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                               => ( ( X3 != X1 )
                                                                 => ( X3 = X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) )
                                                                     => ( ( dsetconstr @ X1 @ X2 )
                                                                       != emptyset ) )
                                                                 => ( ! [X1: $i > $o,X2: $i] :
                                                                        ( ( in @ X2 @ emptyset )
                                                                       => ( X1 @ X2 ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) )
                                                                         => ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) )
                                                                           => ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) )
                                                                             => ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) )
                                                                               => ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $o] :
                                                                                  ( X1
                                                                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                             => ( ! [X1: $o] :
                                                                                    ( X1
                                                                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) )
                                                                                     => ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ~ ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                                        ( ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) )
                                                                                       => ~ ! [X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( X2 @ X3 ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ~ ! [X2: $i] :
                                                                                                ( ( X1 @ X2 )
                                                                                               => ~ ! [X3: $i] :
                                                                                                      ( ( X1 @ X3 )
                                                                                                     => ( X2 = X3 ) ) )
                                                                                         => ( exu @ X1 ) )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ~ ! [X2: $i] :
                                                                                                  ~ ( X1 @ X2 )
                                                                                           => ( ! [X2: $i,X3: $i] :
                                                                                                  ( ( X1 @ X2 )
                                                                                                 => ( ( X1 @ X3 )
                                                                                                   => ( X2 = X3 ) ) )
                                                                                             => ( exu @ X1 ) ) )
                                                                                       => ( ! [X1: $i > $o] :
                                                                                              ( ~ ! [X2: $i] :
                                                                                                    ~ ! [X3: $i] :
                                                                                                        ( ( X1 @ X3 )
                                                                                                        = ( X3 = X2 ) )
                                                                                             => ( exu @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                    ( ( X3 = X4 )
                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                     => ( in @ X4 @ X2 ) ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                        = ( in @ X4 @ X2 ) ) ) )
                                                                                             => ( ! [X1: $i > $o] :
                                                                                                    ( ( exu @ X1 )
                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                        ( ( X1 @ X2 )
                                                                                                       => ( ( X1 @ X3 )
                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( X1 @ X3 )
                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                     => ( ( exu @ X1 )
                                                                                                        = ( exu @ X2 ) ) )
                                                                                                 => ( ( emptyset = emptyset )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ! [X3: $i,X4: $i] :
                                                                                                              ( ( X3 = X4 )
                                                                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ( ( powerset @ X1 )
                                                                                                              = ( powerset @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ( ( setunion @ X1 )
                                                                                                                = ( setunion @ X2 ) ) )
                                                                                                         => ( ( omega = omega )
                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                  ( ( exu @ X1 )
                                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                                      ( ( X1 @ X2 )
                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                                        ( ( X3 = X4 )
                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                                   => ( ( exu @ X1 )
                                                                                                                     => ( ( exu @ X2 )
                                                                                                                       => ( ( descr @ X1 )
                                                                                                                          = ( descr @ X2 ) ) ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                          ( ! [X5: $i] :
                                                                                                                              ( ( in @ X5 @ X1 )
                                                                                                                             => ! [X6: $i] :
                                                                                                                                  ( ( in @ X6 @ X2 )
                                                                                                                                 => ( ( X5 = X6 )
                                                                                                                                   => ( ( X3 @ X5 )
                                                                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                 => ( sP26
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( X1 = X2 )
                                                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                                                       => ( sP26
                                                                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                                                                       => ( X1 != X2 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                           => ( X1 != X2 ) ) )
                                                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                             => ( sP1
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i] :
                                                                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                                                                       => ( X1 = emptyset ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                               => X4 )
                                                                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                 => X4 )
                                                                                                                                                                               => X4 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                                     => ( in @ X3
                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                     => ( subset @ X3
                                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h40,assumption,
    ! [X1: $i > $o] :
      ( ( exu @ X1 )
     => ~ ! [X2: $i] :
            ~ ( X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h41,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) )
         => ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) )
           => ( X1 = X2 ) ) )
     => ( ! [X1: $i] :
            ( ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
           => ( X1 = emptyset ) )
       => ( ! [X1: $i] :
              ( ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
             => ( X1 = emptyset ) )
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                  = ( X2 @ X3 ) ) )
           => ( ! [X1: $i] :
                  ( ( nonempty @ X1 )
                 => ~ ! [X2: $i] :
                        ~ ( in @ X2 @ X1 ) )
             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ( X2 @ X3 )
                     => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
               => ( ! [X1: $i] :
                      ( ~ ! [X2: $i] :
                            ~ ( in @ X2 @ X1 )
                     => ( nonempty @ X1 ) )
                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                   => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                             => ! [X4: $o] :
                                  ( ( ( X3 = X1 )
                                   => X4 )
                                 => ( ( ( in @ X3 @ X2 )
                                     => X4 )
                                   => X4 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                               => ( ( X3 != X1 )
                                 => ( in @ X3 @ X2 ) ) )
                           => ( ! [X1: $i] :
                                  ( ( dsetconstr @ X1
                                    @ ^ [X2: $i] : ~ $false )
                                  = X1 )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ( in @ X3 @ X1 ) )
                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                   => ( sP7
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X2 @ X3 )
                                           => ( ( in @ X3 @ X1 )
                                             => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X2 @ ( setunion @ X1 ) )
                                             => ! [X3: $o] :
                                                  ( ! [X4: $i] :
                                                      ( ( in @ X2 @ X4 )
                                                     => ( ( in @ X4 @ X1 )
                                                       => X3 ) )
                                                 => X3 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( in @ X2 @ X1 )
                                               => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ( exu @ X1 )
                                                 => ~ ! [X2: $i] :
                                                        ~ ! [X3: $i] :
                                                            ( ( X1 @ X3 )
                                                            = ( X3 = X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ( nonempty @ X1 )
                                                   => ~ ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                     => ( X1 = X2 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 != X2 )
                                                       => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                             => ( ( X3 != X1 )
                                                               => ( X3 = X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) )
                                                                   => ( ( dsetconstr @ X1 @ X2 )
                                                                     != emptyset ) )
                                                               => ( ! [X1: $i > $o,X2: $i] :
                                                                      ( ( in @ X2 @ emptyset )
                                                                     => ( X1 @ X2 ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) )
                                                                       => ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) )
                                                                         => ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) )
                                                                           => ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) )
                                                                             => ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $o] :
                                                                                ( X1
                                                                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                           => ( ! [X1: $o] :
                                                                                  ( X1
                                                                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) )
                                                                                   => ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                      ( ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) )
                                                                                     => ~ ! [X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( X2 @ X3 ) ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ~ ! [X2: $i] :
                                                                                              ( ( X1 @ X2 )
                                                                                             => ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                   => ( X2 = X3 ) ) )
                                                                                       => ( exu @ X1 ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ~ ! [X2: $i] :
                                                                                                ~ ( X1 @ X2 )
                                                                                         => ( ! [X2: $i,X3: $i] :
                                                                                                ( ( X1 @ X2 )
                                                                                               => ( ( X1 @ X3 )
                                                                                                 => ( X2 = X3 ) ) )
                                                                                           => ( exu @ X1 ) ) )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ~ ! [X2: $i] :
                                                                                                  ~ ! [X3: $i] :
                                                                                                      ( ( X1 @ X3 )
                                                                                                      = ( X3 = X2 ) )
                                                                                           => ( exu @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                   => ( in @ X4 @ X2 ) ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                    ( ( X3 = X4 )
                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                      = ( in @ X4 @ X2 ) ) ) )
                                                                                           => ( ! [X1: $i > $o] :
                                                                                                  ( ( exu @ X1 )
                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                      ( ( X1 @ X2 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                        ( ( X3 = X4 )
                                                                                                       => ( ( X1 @ X3 )
                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                   => ( ( exu @ X1 )
                                                                                                      = ( exu @ X2 ) ) )
                                                                                               => ( ( emptyset = emptyset )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                            ( ( X3 = X4 )
                                                                                                           => ( ( setadjoin @ X1 @ X3 )
                                                                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ( ( powerset @ X1 )
                                                                                                            = ( powerset @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ( ( setunion @ X1 )
                                                                                                              = ( setunion @ X2 ) ) )
                                                                                                       => ( ( omega = omega )
                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                ( ( exu @ X1 )
                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                    ( ( X1 @ X2 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                                      ( ( X3 = X4 )
                                                                                                                     => ( ( X1 @ X3 )
                                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                                 => ( ( exu @ X1 )
                                                                                                                   => ( ( exu @ X2 )
                                                                                                                     => ( ( descr @ X1 )
                                                                                                                        = ( descr @ X2 ) ) ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                        ( ! [X5: $i] :
                                                                                                                            ( ( in @ X5 @ X1 )
                                                                                                                           => ! [X6: $i] :
                                                                                                                                ( ( in @ X6 @ X2 )
                                                                                                                               => ( ( X5 = X6 )
                                                                                                                                 => ( ( X3 @ X5 )
                                                                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                               => ( sP26
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( X1 = X2 )
                                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                                     => ( sP26
                                                                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                                                                     => ( X1 != X2 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                                         => ( X1 != X2 ) ) )
                                                                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( subset @ X1 @ X3 )
                                                                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                           => ( sP1
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                                                                     => ( X1 = X2 ) ) )
                                                                                                                                               => ( ! [X1: $i] :
                                                                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                                                                     => ( X1 = emptyset ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                             => X4 )
                                                                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                               => X4 )
                                                                                                                                                                             => X4 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                                   => ( in @ X3
                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                   => ( subset @ X3
                                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h42,assumption,
    ! [X1: $i,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ X3 @ X2 ) )
     => ( ! [X3: $i] :
            ( ( in @ X3 @ X2 )
           => ( in @ X3 @ X1 ) )
       => ( X1 = X2 ) ) ),
    introduced(assumption,[]) ).

thf(h43,assumption,
    ~ ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) )
     => ( ! [X1: $i] :
            ( ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
           => ( X1 = emptyset ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                = ( X2 @ X3 ) ) )
         => ( ! [X1: $i] :
                ( ( nonempty @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 ) )
           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( X2 @ X3 )
                   => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
             => ( ! [X1: $i] :
                    ( ~ ! [X2: $i] :
                          ~ ( in @ X2 @ X1 )
                   => ( nonempty @ X1 ) )
               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                 => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                           => ! [X4: $o] :
                                ( ( ( X3 = X1 )
                                 => X4 )
                               => ( ( ( in @ X3 @ X2 )
                                   => X4 )
                                 => X4 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                             => ( ( X3 != X1 )
                               => ( in @ X3 @ X2 ) ) )
                         => ( ! [X1: $i] :
                                ( ( dsetconstr @ X1
                                  @ ^ [X2: $i] : ~ $false )
                                = X1 )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ X1 ) )
                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                 => ( sP7
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X2 @ X3 )
                                         => ( ( in @ X3 @ X1 )
                                           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X2 @ ( setunion @ X1 ) )
                                           => ! [X3: $o] :
                                                ( ! [X4: $i] :
                                                    ( ( in @ X2 @ X4 )
                                                   => ( ( in @ X4 @ X1 )
                                                     => X3 ) )
                                               => X3 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X2 @ X1 )
                                             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                          = ( X3 = X2 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ( nonempty @ X1 )
                                                 => ~ ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                   => ( X1 = X2 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 != X2 )
                                                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ( X3 != X1 )
                                                             => ( X3 = X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) )
                                                                 => ( ( dsetconstr @ X1 @ X2 )
                                                                   != emptyset ) )
                                                             => ( ! [X1: $i > $o,X2: $i] :
                                                                    ( ( in @ X2 @ emptyset )
                                                                   => ( X1 @ X2 ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) )
                                                                     => ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) )
                                                                       => ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) )
                                                                         => ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) )
                                                                           => ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $o] :
                                                                              ( X1
                                                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                         => ( ! [X1: $o] :
                                                                                ( X1
                                                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) )
                                                                                 => ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                    ( ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) )
                                                                                   => ~ ! [X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( X2 @ X3 ) ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ~ ! [X2: $i] :
                                                                                            ( ( X1 @ X2 )
                                                                                           => ~ ! [X3: $i] :
                                                                                                  ( ( X1 @ X3 )
                                                                                                 => ( X2 = X3 ) ) )
                                                                                     => ( exu @ X1 ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ~ ! [X2: $i] :
                                                                                              ~ ( X1 @ X2 )
                                                                                       => ( ! [X2: $i,X3: $i] :
                                                                                              ( ( X1 @ X2 )
                                                                                             => ( ( X1 @ X3 )
                                                                                               => ( X2 = X3 ) ) )
                                                                                         => ( exu @ X1 ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ~ ! [X2: $i] :
                                                                                                ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                    = ( X3 = X2 ) )
                                                                                         => ( exu @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ( exu @ X1 )
                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                    ( ( X1 @ X2 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                 => ( ( exu @ X1 )
                                                                                                    = ( exu @ X2 ) ) )
                                                                                             => ( ( emptyset = emptyset )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ( ( powerset @ X1 )
                                                                                                          = ( powerset @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ( ( setunion @ X1 )
                                                                                                            = ( setunion @ X2 ) ) )
                                                                                                     => ( ( omega = omega )
                                                                                                       => ( ! [X1: $i > $o] :
                                                                                                              ( ( exu @ X1 )
                                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                                  ( ( X1 @ X2 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                                    ( ( X3 = X4 )
                                                                                                                   => ( ( X1 @ X3 )
                                                                                                                      = ( X2 @ X4 ) ) )
                                                                                                               => ( ( exu @ X1 )
                                                                                                                 => ( ( exu @ X2 )
                                                                                                                   => ( ( descr @ X1 )
                                                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                      ( ! [X5: $i] :
                                                                                                                          ( ( in @ X5 @ X1 )
                                                                                                                         => ! [X6: $i] :
                                                                                                                              ( ( in @ X6 @ X2 )
                                                                                                                             => ( ( X5 = X6 )
                                                                                                                               => ( ( X3 @ X5 )
                                                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                             => ( sP26
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( X1 = X2 )
                                                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                                                   => ( sP26
                                                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                                                   => ( X1 != X2 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                                       => ( X1 != X2 ) ) )
                                                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                         => ( sP1
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                                                   => ( X1 = emptyset ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                           => X4 )
                                                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                             => X4 )
                                                                                                                                                                           => X4 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( in @ X3
                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                 => ( subset @ X3
                                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h44,assumption,
    ! [X1: $i] :
      ( ! [X2: $i] :
          ~ ( in @ X2 @ X1 )
     => ( X1 = emptyset ) ),
    introduced(assumption,[]) ).

thf(h45,assumption,
    ~ ( ! [X1: $i] :
          ( ! [X2: $i] :
              ~ ( in @ X2 @ X1 )
         => ( X1 = emptyset ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
              = ( X2 @ X3 ) ) )
       => ( ! [X1: $i] :
              ( ( nonempty @ X1 )
             => ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 ) )
         => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( X2 @ X3 )
                 => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
           => ( ! [X1: $i] :
                  ( ~ ! [X2: $i] :
                        ~ ( in @ X2 @ X1 )
                 => ( nonempty @ X1 ) )
             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
               => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                         => ! [X4: $o] :
                              ( ( ( X3 = X1 )
                               => X4 )
                             => ( ( ( in @ X3 @ X2 )
                                 => X4 )
                               => X4 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                           => ( ( X3 != X1 )
                             => ( in @ X3 @ X2 ) ) )
                       => ( ! [X1: $i] :
                              ( ( dsetconstr @ X1
                                @ ^ [X2: $i] : ~ $false )
                              = X1 )
                         => ( ! [X1: $i,X2: $i] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ( in @ X3 @ X1 ) )
                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                               => ( sP7
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X2 @ X3 )
                                       => ( ( in @ X3 @ X1 )
                                         => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X2 @ ( setunion @ X1 ) )
                                         => ! [X3: $o] :
                                              ( ! [X4: $i] :
                                                  ( ( in @ X2 @ X4 )
                                                 => ( ( in @ X4 @ X1 )
                                                   => X3 ) )
                                             => X3 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X2 @ X1 )
                                           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                       => ( ! [X1: $i > $o] :
                                              ( ( exu @ X1 )
                                             => ~ ! [X2: $i] :
                                                    ~ ! [X3: $i] :
                                                        ( ( X1 @ X3 )
                                                        = ( X3 = X2 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( nonempty @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ( in @ X2 @ X1 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                 => ( X1 = X2 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 != X2 )
                                                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ( X3 != X1 )
                                                           => ( X3 = X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) )
                                                               => ( ( dsetconstr @ X1 @ X2 )
                                                                 != emptyset ) )
                                                           => ( ! [X1: $i > $o,X2: $i] :
                                                                  ( ( in @ X2 @ emptyset )
                                                                 => ( X1 @ X2 ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) )
                                                                   => ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) )
                                                                     => ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) )
                                                                       => ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) )
                                                                         => ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $o] :
                                                                            ( X1
                                                                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                       => ( ! [X1: $o] :
                                                                              ( X1
                                                                             => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) )
                                                                               => ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ~ ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                  ( ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) )
                                                                                 => ~ ! [X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( X2 @ X3 ) ) )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ~ ! [X2: $i] :
                                                                                          ( ( X1 @ X2 )
                                                                                         => ~ ! [X3: $i] :
                                                                                                ( ( X1 @ X3 )
                                                                                               => ( X2 = X3 ) ) )
                                                                                   => ( exu @ X1 ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ~ ! [X2: $i] :
                                                                                            ~ ( X1 @ X2 )
                                                                                     => ( ! [X2: $i,X3: $i] :
                                                                                            ( ( X1 @ X2 )
                                                                                           => ( ( X1 @ X3 )
                                                                                             => ( X2 = X3 ) ) )
                                                                                       => ( exu @ X1 ) ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ~ ! [X2: $i] :
                                                                                              ~ ! [X3: $i] :
                                                                                                  ( ( X1 @ X3 )
                                                                                                  = ( X3 = X2 ) )
                                                                                       => ( exu @ X1 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ! [X3: $i,X4: $i] :
                                                                                              ( ( X3 = X4 )
                                                                                             => ( ( in @ X3 @ X1 )
                                                                                               => ( in @ X4 @ X2 ) ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                  = ( in @ X4 @ X2 ) ) ) )
                                                                                       => ( ! [X1: $i > $o] :
                                                                                              ( ( exu @ X1 )
                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                  ( ( X1 @ X2 )
                                                                                                 => ( ( X1 @ X3 )
                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                    ( ( X3 = X4 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                      = ( X2 @ X4 ) ) )
                                                                                               => ( ( exu @ X1 )
                                                                                                  = ( exu @ X2 ) ) )
                                                                                           => ( ( emptyset = emptyset )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ! [X3: $i,X4: $i] :
                                                                                                        ( ( X3 = X4 )
                                                                                                       => ( ( setadjoin @ X1 @ X3 )
                                                                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ( ( powerset @ X1 )
                                                                                                        = ( powerset @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ( ( setunion @ X1 )
                                                                                                          = ( setunion @ X2 ) ) )
                                                                                                   => ( ( omega = omega )
                                                                                                     => ( ! [X1: $i > $o] :
                                                                                                            ( ( exu @ X1 )
                                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                                ( ( X1 @ X2 )
                                                                                                               => ( ( X1 @ X3 )
                                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                                  ( ( X3 = X4 )
                                                                                                                 => ( ( X1 @ X3 )
                                                                                                                    = ( X2 @ X4 ) ) )
                                                                                                             => ( ( exu @ X1 )
                                                                                                               => ( ( exu @ X2 )
                                                                                                                 => ( ( descr @ X1 )
                                                                                                                    = ( descr @ X2 ) ) ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                    ( ! [X5: $i] :
                                                                                                                        ( ( in @ X5 @ X1 )
                                                                                                                       => ! [X6: $i] :
                                                                                                                            ( ( in @ X6 @ X2 )
                                                                                                                           => ( ( X5 = X6 )
                                                                                                                             => ( ( X3 @ X5 )
                                                                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                           => ( sP26
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( X1 = X2 )
                                                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                                                 => ( sP26
                                                                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                                                                 => ( X1 != X2 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                                     => ( X1 != X2 ) ) )
                                                                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( subset @ X1 @ X3 )
                                                                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                       => ( sP1
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                                                                 => ( X1 = X2 ) ) )
                                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                                                                 => ( X1 = emptyset ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                         => X4 )
                                                                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                           => X4 )
                                                                                                                                                                         => X4 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                                                                               => ( in @ X3
                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                                                                               => ( subset @ X3
                                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h46,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
            = ( X2 @ X3 ) ) )
     => ( ! [X1: $i] :
            ( ( nonempty @ X1 )
           => ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 ) )
       => ( ! [X1: $i,X2: $i > $o,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( X2 @ X3 )
               => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
         => ( ! [X1: $i] :
                ( ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 )
               => ( nonempty @ X1 ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
             => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                       => ! [X4: $o] :
                            ( ( ( X3 = X1 )
                             => X4 )
                           => ( ( ( in @ X3 @ X2 )
                               => X4 )
                             => X4 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                         => ( ( X3 != X1 )
                           => ( in @ X3 @ X2 ) ) )
                     => ( ! [X1: $i] :
                            ( ( dsetconstr @ X1
                              @ ^ [X2: $i] : ~ $false )
                            = X1 )
                       => ( ! [X1: $i,X2: $i] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ( in @ X3 @ X1 ) )
                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                             => ( sP7
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X2 @ X3 )
                                     => ( ( in @ X3 @ X1 )
                                       => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( in @ X2 @ ( setunion @ X1 ) )
                                       => ! [X3: $o] :
                                            ( ! [X4: $i] :
                                                ( ( in @ X2 @ X4 )
                                               => ( ( in @ X4 @ X1 )
                                                 => X3 ) )
                                           => X3 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X2 @ X1 )
                                         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ( exu @ X1 )
                                           => ~ ! [X2: $i] :
                                                  ~ ! [X3: $i] :
                                                      ( ( X1 @ X3 )
                                                      = ( X3 = X2 ) ) )
                                       => ( ! [X1: $i] :
                                              ( ( nonempty @ X1 )
                                             => ~ ! [X2: $i] :
                                                    ~ ( in @ X2 @ X1 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                               => ( X1 = X2 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 != X2 )
                                                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                       => ( ( X3 != X1 )
                                                         => ( X3 = X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) )
                                                             => ( ( dsetconstr @ X1 @ X2 )
                                                               != emptyset ) )
                                                         => ( ! [X1: $i > $o,X2: $i] :
                                                                ( ( in @ X2 @ emptyset )
                                                               => ( X1 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) )
                                                                 => ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) )
                                                                   => ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) )
                                                                     => ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) )
                                                                       => ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $o] :
                                                                          ( X1
                                                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                     => ( ! [X1: $o] :
                                                                            ( X1
                                                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) )
                                                                             => ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ~ ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                ( ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) )
                                                                               => ~ ! [X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( X2 @ X3 ) ) )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ~ ! [X2: $i] :
                                                                                        ( ( X1 @ X2 )
                                                                                       => ~ ! [X3: $i] :
                                                                                              ( ( X1 @ X3 )
                                                                                             => ( X2 = X3 ) ) )
                                                                                 => ( exu @ X1 ) )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ~ ! [X2: $i] :
                                                                                          ~ ( X1 @ X2 )
                                                                                   => ( ! [X2: $i,X3: $i] :
                                                                                          ( ( X1 @ X2 )
                                                                                         => ( ( X1 @ X3 )
                                                                                           => ( X2 = X3 ) ) )
                                                                                     => ( exu @ X1 ) ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ~ ! [X2: $i] :
                                                                                            ~ ! [X3: $i] :
                                                                                                ( ( X1 @ X3 )
                                                                                                = ( X3 = X2 ) )
                                                                                     => ( exu @ X1 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ! [X3: $i,X4: $i] :
                                                                                            ( ( X3 = X4 )
                                                                                           => ( ( in @ X3 @ X1 )
                                                                                             => ( in @ X4 @ X2 ) ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ! [X3: $i,X4: $i] :
                                                                                              ( ( X3 = X4 )
                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                = ( in @ X4 @ X2 ) ) ) )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ( exu @ X1 )
                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                ( ( X1 @ X2 )
                                                                                               => ( ( X1 @ X3 )
                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( X1 @ X3 )
                                                                                                    = ( X2 @ X4 ) ) )
                                                                                             => ( ( exu @ X1 )
                                                                                                = ( exu @ X2 ) ) )
                                                                                         => ( ( emptyset = emptyset )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ( ( powerset @ X1 )
                                                                                                      = ( powerset @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ( ( setunion @ X1 )
                                                                                                        = ( setunion @ X2 ) ) )
                                                                                                 => ( ( omega = omega )
                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                          ( ( exu @ X1 )
                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                              ( ( X1 @ X2 )
                                                                                                             => ( ( X1 @ X3 )
                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                ( ( X3 = X4 )
                                                                                                               => ( ( X1 @ X3 )
                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                           => ( ( exu @ X1 )
                                                                                                             => ( ( exu @ X2 )
                                                                                                               => ( ( descr @ X1 )
                                                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                  ( ! [X5: $i] :
                                                                                                                      ( ( in @ X5 @ X1 )
                                                                                                                     => ! [X6: $i] :
                                                                                                                          ( ( in @ X6 @ X2 )
                                                                                                                         => ( ( X5 = X6 )
                                                                                                                           => ( ( X3 @ X5 )
                                                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                         => ( sP26
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( X1 = X2 )
                                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                                               => ( sP26
                                                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                                                               => ( X1 != X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                                   => ( X1 != X2 ) ) )
                                                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                     => ( sP1
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                                                               => ( X1 = X2 ) ) )
                                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                                                               => ( X1 = emptyset ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                       => X4 )
                                                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                         => X4 )
                                                                                                                                                                       => X4 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                                                             => ( in @ X3
                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                                                             => ( subset @ X3
                                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h47,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
        = ( X2 @ X3 ) ) ),
    introduced(assumption,[]) ).

thf(h48,assumption,
    ~ ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( X2 @ X3 )
             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
       => ( ! [X1: $i] :
              ( ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 )
             => ( nonempty @ X1 ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                     => ! [X4: $o] :
                          ( ( ( X3 = X1 )
                           => X4 )
                         => ( ( ( in @ X3 @ X2 )
                             => X4 )
                           => X4 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                       => ( ( X3 != X1 )
                         => ( in @ X3 @ X2 ) ) )
                   => ( ! [X1: $i] :
                          ( ( dsetconstr @ X1
                            @ ^ [X2: $i] : ~ $false )
                          = X1 )
                     => ( ! [X1: $i,X2: $i] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ( in @ X3 @ X1 ) )
                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                           => ( sP7
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X2 @ X3 )
                                   => ( ( in @ X3 @ X1 )
                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                     => ! [X3: $o] :
                                          ( ! [X4: $i] :
                                              ( ( in @ X2 @ X4 )
                                             => ( ( in @ X4 @ X1 )
                                               => X3 ) )
                                         => X3 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( in @ X2 @ X1 )
                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ( exu @ X1 )
                                         => ~ ! [X2: $i] :
                                                ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                    = ( X3 = X2 ) ) )
                                     => ( ! [X1: $i] :
                                            ( ( nonempty @ X1 )
                                           => ~ ! [X2: $i] :
                                                  ~ ( in @ X2 @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                             => ( X1 = X2 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 != X2 )
                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                     => ( ( X3 != X1 )
                                                       => ( X3 = X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) )
                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                             != emptyset ) )
                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                              ( ( in @ X2 @ emptyset )
                                                             => ( X1 @ X2 ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) )
                                                               => ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) )
                                                                 => ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) )
                                                                   => ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) )
                                                                     => ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $o] :
                                                                        ( X1
                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                   => ( ! [X1: $o] :
                                                                          ( X1
                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) )
                                                                           => ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ~ ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                              ( ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) )
                                                                             => ~ ! [X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( X2 @ X3 ) ) )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ~ ! [X2: $i] :
                                                                                      ( ( X1 @ X2 )
                                                                                     => ~ ! [X3: $i] :
                                                                                            ( ( X1 @ X3 )
                                                                                           => ( X2 = X3 ) ) )
                                                                               => ( exu @ X1 ) )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ~ ! [X2: $i] :
                                                                                        ~ ( X1 @ X2 )
                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                        ( ( X1 @ X2 )
                                                                                       => ( ( X1 @ X3 )
                                                                                         => ( X2 = X3 ) ) )
                                                                                   => ( exu @ X1 ) ) )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ~ ! [X2: $i] :
                                                                                          ~ ! [X3: $i] :
                                                                                              ( ( X1 @ X3 )
                                                                                              = ( X3 = X2 ) )
                                                                                   => ( exu @ X1 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ! [X3: $i,X4: $i] :
                                                                                          ( ( X3 = X4 )
                                                                                         => ( ( in @ X3 @ X1 )
                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ! [X3: $i,X4: $i] :
                                                                                            ( ( X3 = X4 )
                                                                                           => ( ( in @ X3 @ X1 )
                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ( exu @ X1 )
                                                                                         => ! [X2: $i,X3: $i] :
                                                                                              ( ( X1 @ X2 )
                                                                                             => ( ( X1 @ X3 )
                                                                                               => ( X2 = X3 ) ) ) )
                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( X1 @ X3 )
                                                                                                  = ( X2 @ X4 ) ) )
                                                                                           => ( ( exu @ X1 )
                                                                                              = ( exu @ X2 ) ) )
                                                                                       => ( ( emptyset = emptyset )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                    ( ( X3 = X4 )
                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( ( powerset @ X1 )
                                                                                                    = ( powerset @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ( ( setunion @ X1 )
                                                                                                      = ( setunion @ X2 ) ) )
                                                                                               => ( ( omega = omega )
                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                        ( ( exu @ X1 )
                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                            ( ( X1 @ X2 )
                                                                                                           => ( ( X1 @ X3 )
                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                              ( ( X3 = X4 )
                                                                                                             => ( ( X1 @ X3 )
                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                         => ( ( exu @ X1 )
                                                                                                           => ( ( exu @ X2 )
                                                                                                             => ( ( descr @ X1 )
                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                ( ! [X5: $i] :
                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                   => ! [X6: $i] :
                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                       => ( ( X5 = X6 )
                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                       => ( sP26
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( X1 = X2 )
                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                             => ( sP26
                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                             => ( X1 != X2 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                   => ( sP1
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                     => X4 )
                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                       => X4 )
                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h49,assumption,
    ! [X1: $i] :
      ( ( nonempty @ X1 )
     => ~ ! [X2: $i] :
            ~ ( in @ X2 @ X1 ) ),
    introduced(assumption,[]) ).

thf(h50,assumption,
    ~ ( ! [X1: $i,X2: $i > $o,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( X2 @ X3 )
           => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
     => ( ! [X1: $i] :
            ( ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 )
           => ( nonempty @ X1 ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
         => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                   => ! [X4: $o] :
                        ( ( ( X3 = X1 )
                         => X4 )
                       => ( ( ( in @ X3 @ X2 )
                           => X4 )
                         => X4 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                     => ( ( X3 != X1 )
                       => ( in @ X3 @ X2 ) ) )
                 => ( ! [X1: $i] :
                        ( ( dsetconstr @ X1
                          @ ^ [X2: $i] : ~ $false )
                        = X1 )
                   => ( ! [X1: $i,X2: $i] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ X1 ) )
                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                         => ( sP7
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X2 @ X3 )
                                 => ( ( in @ X3 @ X1 )
                                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( in @ X2 @ ( setunion @ X1 ) )
                                   => ! [X3: $o] :
                                        ( ! [X4: $i] :
                                            ( ( in @ X2 @ X4 )
                                           => ( ( in @ X4 @ X1 )
                                             => X3 ) )
                                       => X3 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( in @ X2 @ X1 )
                                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ( exu @ X1 )
                                       => ~ ! [X2: $i] :
                                              ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                  = ( X3 = X2 ) ) )
                                   => ( ! [X1: $i] :
                                          ( ( nonempty @ X1 )
                                         => ~ ! [X2: $i] :
                                                ~ ( in @ X2 @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                           => ( X1 = X2 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 != X2 )
                                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ( X3 != X1 )
                                                     => ( X3 = X2 ) ) )
                                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) )
                                                         => ( ( dsetconstr @ X1 @ X2 )
                                                           != emptyset ) )
                                                     => ( ! [X1: $i > $o,X2: $i] :
                                                            ( ( in @ X2 @ emptyset )
                                                           => ( X1 @ X2 ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) )
                                                             => ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) )
                                                               => ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) )
                                                                 => ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) )
                                                                   => ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $o] :
                                                                      ( X1
                                                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                 => ( ! [X1: $o] :
                                                                        ( X1
                                                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) )
                                                                         => ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ~ ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                            ( ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) )
                                                                           => ~ ! [X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( X2 @ X3 ) ) )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ~ ! [X2: $i] :
                                                                                    ( ( X1 @ X2 )
                                                                                   => ~ ! [X3: $i] :
                                                                                          ( ( X1 @ X3 )
                                                                                         => ( X2 = X3 ) ) )
                                                                             => ( exu @ X1 ) )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ~ ! [X2: $i] :
                                                                                      ~ ( X1 @ X2 )
                                                                               => ( ! [X2: $i,X3: $i] :
                                                                                      ( ( X1 @ X2 )
                                                                                     => ( ( X1 @ X3 )
                                                                                       => ( X2 = X3 ) ) )
                                                                                 => ( exu @ X1 ) ) )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ~ ! [X2: $i] :
                                                                                        ~ ! [X3: $i] :
                                                                                            ( ( X1 @ X3 )
                                                                                            = ( X3 = X2 ) )
                                                                                 => ( exu @ X1 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ! [X3: $i,X4: $i] :
                                                                                        ( ( X3 = X4 )
                                                                                       => ( ( in @ X3 @ X1 )
                                                                                         => ( in @ X4 @ X2 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ! [X3: $i,X4: $i] :
                                                                                          ( ( X3 = X4 )
                                                                                         => ( ( in @ X3 @ X1 )
                                                                                            = ( in @ X4 @ X2 ) ) ) )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ( exu @ X1 )
                                                                                       => ! [X2: $i,X3: $i] :
                                                                                            ( ( X1 @ X2 )
                                                                                           => ( ( X1 @ X3 )
                                                                                             => ( X2 = X3 ) ) ) )
                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                              ( ( X3 = X4 )
                                                                                             => ( ( X1 @ X3 )
                                                                                                = ( X2 @ X4 ) ) )
                                                                                         => ( ( exu @ X1 )
                                                                                            = ( exu @ X2 ) ) )
                                                                                     => ( ( emptyset = emptyset )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ( ( powerset @ X1 )
                                                                                                  = ( powerset @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( ( setunion @ X1 )
                                                                                                    = ( setunion @ X2 ) ) )
                                                                                             => ( ( omega = omega )
                                                                                               => ( ! [X1: $i > $o] :
                                                                                                      ( ( exu @ X1 )
                                                                                                     => ! [X2: $i,X3: $i] :
                                                                                                          ( ( X1 @ X2 )
                                                                                                         => ( ( X1 @ X3 )
                                                                                                           => ( X2 = X3 ) ) ) )
                                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                                            ( ( X3 = X4 )
                                                                                                           => ( ( X1 @ X3 )
                                                                                                              = ( X2 @ X4 ) ) )
                                                                                                       => ( ( exu @ X1 )
                                                                                                         => ( ( exu @ X2 )
                                                                                                           => ( ( descr @ X1 )
                                                                                                              = ( descr @ X2 ) ) ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                              ( ! [X5: $i] :
                                                                                                                  ( ( in @ X5 @ X1 )
                                                                                                                 => ! [X6: $i] :
                                                                                                                      ( ( in @ X6 @ X2 )
                                                                                                                     => ( ( X5 = X6 )
                                                                                                                       => ( ( X3 @ X5 )
                                                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                     => ( sP26
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( X1 = X2 )
                                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                                           => ( sP26
                                                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                                                           => ( X1 != X2 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                                               => ( X1 != X2 ) ) )
                                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                 => ( sP1
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                                                           => ( X1 = X2 ) ) )
                                                                                                                                     => ( ! [X1: $i] :
                                                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                                                           => ( X1 = emptyset ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                   => X4 )
                                                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                     => X4 )
                                                                                                                                                                   => X4 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                                                         => ( in @ X3
                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                                                         => ( subset @ X3
                                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h51,assumption,
    ! [X1: $i,X2: $i > $o,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ( X2 @ X3 )
       => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) ),
    introduced(assumption,[]) ).

thf(h52,assumption,
    ~ ( ! [X1: $i] :
          ( ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 )
         => ( nonempty @ X1 ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
       => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                 => ! [X4: $o] :
                      ( ( ( X3 = X1 )
                       => X4 )
                     => ( ( ( in @ X3 @ X2 )
                         => X4 )
                       => X4 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                   => ( ( X3 != X1 )
                     => ( in @ X3 @ X2 ) ) )
               => ( ! [X1: $i] :
                      ( ( dsetconstr @ X1
                        @ ^ [X2: $i] : ~ $false )
                      = X1 )
                 => ( ! [X1: $i,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( in @ X3 @ X1 ) )
                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                       => ( sP7
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X2 @ X3 )
                               => ( ( in @ X3 @ X1 )
                                 => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( in @ X2 @ ( setunion @ X1 ) )
                                 => ! [X3: $o] :
                                      ( ! [X4: $i] :
                                          ( ( in @ X2 @ X4 )
                                         => ( ( in @ X4 @ X1 )
                                           => X3 ) )
                                     => X3 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( in @ X2 @ X1 )
                                   => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ~ ! [X2: $i] :
                                            ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                                = ( X3 = X2 ) ) )
                                 => ( ! [X1: $i] :
                                        ( ( nonempty @ X1 )
                                       => ~ ! [X2: $i] :
                                              ~ ( in @ X2 @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                         => ( X1 = X2 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 != X2 )
                                           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ( X3 != X1 )
                                                   => ( X3 = X2 ) ) )
                                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) )
                                                       => ( ( dsetconstr @ X1 @ X2 )
                                                         != emptyset ) )
                                                   => ( ! [X1: $i > $o,X2: $i] :
                                                          ( ( in @ X2 @ emptyset )
                                                         => ( X1 @ X2 ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) )
                                                           => ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) )
                                                             => ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) )
                                                               => ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) )
                                                                 => ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $o] :
                                                                    ( X1
                                                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                               => ( ! [X1: $o] :
                                                                      ( X1
                                                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) )
                                                                       => ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ~ ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                                          ( ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) )
                                                                         => ~ ! [X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( X2 @ X3 ) ) )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ~ ! [X2: $i] :
                                                                                  ( ( X1 @ X2 )
                                                                                 => ~ ! [X3: $i] :
                                                                                        ( ( X1 @ X3 )
                                                                                       => ( X2 = X3 ) ) )
                                                                           => ( exu @ X1 ) )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ~ ! [X2: $i] :
                                                                                    ~ ( X1 @ X2 )
                                                                             => ( ! [X2: $i,X3: $i] :
                                                                                    ( ( X1 @ X2 )
                                                                                   => ( ( X1 @ X3 )
                                                                                     => ( X2 = X3 ) ) )
                                                                               => ( exu @ X1 ) ) )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ~ ! [X2: $i] :
                                                                                      ~ ! [X3: $i] :
                                                                                          ( ( X1 @ X3 )
                                                                                          = ( X3 = X2 ) )
                                                                               => ( exu @ X1 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ! [X3: $i,X4: $i] :
                                                                                      ( ( X3 = X4 )
                                                                                     => ( ( in @ X3 @ X1 )
                                                                                       => ( in @ X4 @ X2 ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ! [X3: $i,X4: $i] :
                                                                                        ( ( X3 = X4 )
                                                                                       => ( ( in @ X3 @ X1 )
                                                                                          = ( in @ X4 @ X2 ) ) ) )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ( exu @ X1 )
                                                                                     => ! [X2: $i,X3: $i] :
                                                                                          ( ( X1 @ X2 )
                                                                                         => ( ( X1 @ X3 )
                                                                                           => ( X2 = X3 ) ) ) )
                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                            ( ( X3 = X4 )
                                                                                           => ( ( X1 @ X3 )
                                                                                              = ( X2 @ X4 ) ) )
                                                                                       => ( ( exu @ X1 )
                                                                                          = ( exu @ X2 ) ) )
                                                                                   => ( ( emptyset = emptyset )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ( ( powerset @ X1 )
                                                                                                = ( powerset @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ( ( setunion @ X1 )
                                                                                                  = ( setunion @ X2 ) ) )
                                                                                           => ( ( omega = omega )
                                                                                             => ( ! [X1: $i > $o] :
                                                                                                    ( ( exu @ X1 )
                                                                                                   => ! [X2: $i,X3: $i] :
                                                                                                        ( ( X1 @ X2 )
                                                                                                       => ( ( X1 @ X3 )
                                                                                                         => ( X2 = X3 ) ) ) )
                                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                                          ( ( X3 = X4 )
                                                                                                         => ( ( X1 @ X3 )
                                                                                                            = ( X2 @ X4 ) ) )
                                                                                                     => ( ( exu @ X1 )
                                                                                                       => ( ( exu @ X2 )
                                                                                                         => ( ( descr @ X1 )
                                                                                                            = ( descr @ X2 ) ) ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                            ( ! [X5: $i] :
                                                                                                                ( ( in @ X5 @ X1 )
                                                                                                               => ! [X6: $i] :
                                                                                                                    ( ( in @ X6 @ X2 )
                                                                                                                   => ( ( X5 = X6 )
                                                                                                                     => ( ( X3 @ X5 )
                                                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                   => ( sP26
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( X1 = X2 )
                                                                                                             => ( subset @ X1 @ X2 ) )
                                                                                                         => ( sP26
                                                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                                                         => ( X1 != X2 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                             => ( X1 != X2 ) ) )
                                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                               => ( sP1
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                                   => ( ! [X1: $i] :
                                                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                                                         => ( X1 = emptyset ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                 => X4 )
                                                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                   => X4 )
                                                                                                                                                                 => X4 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                                       => ( in @ X3
                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                                                       => ( subset @ X3
                                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h53,assumption,
    ! [X1: $i] :
      ( ~ ! [X2: $i] :
            ~ ( in @ X2 @ X1 )
     => ( nonempty @ X1 ) ),
    introduced(assumption,[]) ).

thf(h54,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
     => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
               => ! [X4: $o] :
                    ( ( ( X3 = X1 )
                     => X4 )
                   => ( ( ( in @ X3 @ X2 )
                       => X4 )
                     => X4 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                 => ( ( X3 != X1 )
                   => ( in @ X3 @ X2 ) ) )
             => ( ! [X1: $i] :
                    ( ( dsetconstr @ X1
                      @ ^ [X2: $i] : ~ $false )
                    = X1 )
               => ( ! [X1: $i,X2: $i] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ X1 ) )
                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                   => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                     => ( sP7
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X2 @ X3 )
                             => ( ( in @ X3 @ X1 )
                               => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( in @ X2 @ ( setunion @ X1 ) )
                               => ! [X3: $o] :
                                    ( ! [X4: $i] :
                                        ( ( in @ X2 @ X4 )
                                       => ( ( in @ X4 @ X1 )
                                         => X3 ) )
                                   => X3 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( in @ X2 @ X1 )
                                 => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                             => ( ! [X1: $i > $o] :
                                    ( ( exu @ X1 )
                                   => ~ ! [X2: $i] :
                                          ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                              = ( X3 = X2 ) ) )
                               => ( ! [X1: $i] :
                                      ( ( nonempty @ X1 )
                                     => ~ ! [X2: $i] :
                                            ~ ( in @ X2 @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                       => ( X1 = X2 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 != X2 )
                                         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                               => ( ( X3 != X1 )
                                                 => ( X3 = X2 ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) )
                                                     => ( ( dsetconstr @ X1 @ X2 )
                                                       != emptyset ) )
                                                 => ( ! [X1: $i > $o,X2: $i] :
                                                        ( ( in @ X2 @ emptyset )
                                                       => ( X1 @ X2 ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) )
                                                         => ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) )
                                                           => ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) )
                                                             => ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) )
                                                               => ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $o] :
                                                                  ( X1
                                                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                             => ( ! [X1: $o] :
                                                                    ( X1
                                                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) )
                                                                     => ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ~ ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                                        ( ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) )
                                                                       => ~ ! [X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( X2 @ X3 ) ) )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ~ ! [X2: $i] :
                                                                                ( ( X1 @ X2 )
                                                                               => ~ ! [X3: $i] :
                                                                                      ( ( X1 @ X3 )
                                                                                     => ( X2 = X3 ) ) )
                                                                         => ( exu @ X1 ) )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ~ ! [X2: $i] :
                                                                                  ~ ( X1 @ X2 )
                                                                           => ( ! [X2: $i,X3: $i] :
                                                                                  ( ( X1 @ X2 )
                                                                                 => ( ( X1 @ X3 )
                                                                                   => ( X2 = X3 ) ) )
                                                                             => ( exu @ X1 ) ) )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ~ ! [X2: $i] :
                                                                                    ~ ! [X3: $i] :
                                                                                        ( ( X1 @ X3 )
                                                                                        = ( X3 = X2 ) )
                                                                             => ( exu @ X1 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ! [X3: $i,X4: $i] :
                                                                                    ( ( X3 = X4 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X4 @ X2 ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ! [X3: $i,X4: $i] :
                                                                                      ( ( X3 = X4 )
                                                                                     => ( ( in @ X3 @ X1 )
                                                                                        = ( in @ X4 @ X2 ) ) ) )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ( exu @ X1 )
                                                                                   => ! [X2: $i,X3: $i] :
                                                                                        ( ( X1 @ X2 )
                                                                                       => ( ( X1 @ X3 )
                                                                                         => ( X2 = X3 ) ) ) )
                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                          ( ( X3 = X4 )
                                                                                         => ( ( X1 @ X3 )
                                                                                            = ( X2 @ X4 ) ) )
                                                                                     => ( ( exu @ X1 )
                                                                                        = ( exu @ X2 ) ) )
                                                                                 => ( ( emptyset = emptyset )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ! [X3: $i,X4: $i] :
                                                                                              ( ( X3 = X4 )
                                                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ( ( powerset @ X1 )
                                                                                              = ( powerset @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ( ( setunion @ X1 )
                                                                                                = ( setunion @ X2 ) ) )
                                                                                         => ( ( omega = omega )
                                                                                           => ( ! [X1: $i > $o] :
                                                                                                  ( ( exu @ X1 )
                                                                                                 => ! [X2: $i,X3: $i] :
                                                                                                      ( ( X1 @ X2 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                       => ( X2 = X3 ) ) ) )
                                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                                        ( ( X3 = X4 )
                                                                                                       => ( ( X1 @ X3 )
                                                                                                          = ( X2 @ X4 ) ) )
                                                                                                   => ( ( exu @ X1 )
                                                                                                     => ( ( exu @ X2 )
                                                                                                       => ( ( descr @ X1 )
                                                                                                          = ( descr @ X2 ) ) ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                          ( ! [X5: $i] :
                                                                                                              ( ( in @ X5 @ X1 )
                                                                                                             => ! [X6: $i] :
                                                                                                                  ( ( in @ X6 @ X2 )
                                                                                                                 => ( ( X5 = X6 )
                                                                                                                   => ( ( X3 @ X5 )
                                                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                 => ( sP26
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( X1 = X2 )
                                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                                       => ( sP26
                                                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                                                       => ( X1 != X2 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                           => ( X1 != X2 ) ) )
                                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                             => ( sP1
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                                 => ( ! [X1: $i] :
                                                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                                                       => ( X1 = emptyset ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                                                               => X4 )
                                                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                 => X4 )
                                                                                                                                                               => X4 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                                     => ( in @ X3
                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                                                     => ( subset @ X3
                                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h55,assumption,
    ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h56,assumption,
    ~ ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
             => ! [X4: $o] :
                  ( ( ( X3 = X1 )
                   => X4 )
                 => ( ( ( in @ X3 @ X2 )
                     => X4 )
                   => X4 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
               => ( ( X3 != X1 )
                 => ( in @ X3 @ X2 ) ) )
           => ( ! [X1: $i] :
                  ( ( dsetconstr @ X1
                    @ ^ [X2: $i] : ~ $false )
                  = X1 )
             => ( ! [X1: $i,X2: $i] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( in @ X3 @ X1 ) )
                   => ( in @ X2 @ ( powerset @ X1 ) ) )
               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                 => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                   => ( sP7
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X2 @ X3 )
                           => ( ( in @ X3 @ X1 )
                             => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( in @ X2 @ ( setunion @ X1 ) )
                             => ! [X3: $o] :
                                  ( ! [X4: $i] :
                                      ( ( in @ X2 @ X4 )
                                     => ( ( in @ X4 @ X1 )
                                       => X3 ) )
                                 => X3 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( in @ X2 @ X1 )
                               => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                           => ( ! [X1: $i > $o] :
                                  ( ( exu @ X1 )
                                 => ~ ! [X2: $i] :
                                        ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                            = ( X3 = X2 ) ) )
                             => ( ! [X1: $i] :
                                    ( ( nonempty @ X1 )
                                   => ~ ! [X2: $i] :
                                          ~ ( in @ X2 @ X1 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                     => ( X1 = X2 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 != X2 )
                                       => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                             => ( ( X3 != X1 )
                                               => ( X3 = X2 ) ) )
                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) )
                                                   => ( ( dsetconstr @ X1 @ X2 )
                                                     != emptyset ) )
                                               => ( ! [X1: $i > $o,X2: $i] :
                                                      ( ( in @ X2 @ emptyset )
                                                     => ( X1 @ X2 ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) )
                                                       => ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) )
                                                         => ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) )
                                                           => ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) )
                                                             => ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $o] :
                                                                ( X1
                                                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                           => ( ! [X1: $o] :
                                                                  ( X1
                                                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) )
                                                                   => ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ~ ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                      ( ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) )
                                                                     => ~ ! [X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( X2 @ X3 ) ) )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ~ ! [X2: $i] :
                                                                              ( ( X1 @ X2 )
                                                                             => ~ ! [X3: $i] :
                                                                                    ( ( X1 @ X3 )
                                                                                   => ( X2 = X3 ) ) )
                                                                       => ( exu @ X1 ) )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ~ ! [X2: $i] :
                                                                                ~ ( X1 @ X2 )
                                                                         => ( ! [X2: $i,X3: $i] :
                                                                                ( ( X1 @ X2 )
                                                                               => ( ( X1 @ X3 )
                                                                                 => ( X2 = X3 ) ) )
                                                                           => ( exu @ X1 ) ) )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ~ ! [X2: $i] :
                                                                                  ~ ! [X3: $i] :
                                                                                      ( ( X1 @ X3 )
                                                                                      = ( X3 = X2 ) )
                                                                           => ( exu @ X1 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ! [X3: $i,X4: $i] :
                                                                                  ( ( X3 = X4 )
                                                                                 => ( ( in @ X3 @ X1 )
                                                                                   => ( in @ X4 @ X2 ) ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ! [X3: $i,X4: $i] :
                                                                                    ( ( X3 = X4 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                      = ( in @ X4 @ X2 ) ) ) )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ( exu @ X1 )
                                                                                 => ! [X2: $i,X3: $i] :
                                                                                      ( ( X1 @ X2 )
                                                                                     => ( ( X1 @ X3 )
                                                                                       => ( X2 = X3 ) ) ) )
                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                        ( ( X3 = X4 )
                                                                                       => ( ( X1 @ X3 )
                                                                                          = ( X2 @ X4 ) ) )
                                                                                   => ( ( exu @ X1 )
                                                                                      = ( exu @ X2 ) ) )
                                                                               => ( ( emptyset = emptyset )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ! [X3: $i,X4: $i] :
                                                                                            ( ( X3 = X4 )
                                                                                           => ( ( setadjoin @ X1 @ X3 )
                                                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ( ( powerset @ X1 )
                                                                                            = ( powerset @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ( ( setunion @ X1 )
                                                                                              = ( setunion @ X2 ) ) )
                                                                                       => ( ( omega = omega )
                                                                                         => ( ! [X1: $i > $o] :
                                                                                                ( ( exu @ X1 )
                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                    ( ( X1 @ X2 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                     => ( X2 = X3 ) ) ) )
                                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                                      ( ( X3 = X4 )
                                                                                                     => ( ( X1 @ X3 )
                                                                                                        = ( X2 @ X4 ) ) )
                                                                                                 => ( ( exu @ X1 )
                                                                                                   => ( ( exu @ X2 )
                                                                                                     => ( ( descr @ X1 )
                                                                                                        = ( descr @ X2 ) ) ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                        ( ! [X5: $i] :
                                                                                                            ( ( in @ X5 @ X1 )
                                                                                                           => ! [X6: $i] :
                                                                                                                ( ( in @ X6 @ X2 )
                                                                                                               => ( ( X5 = X6 )
                                                                                                                 => ( ( X3 @ X5 )
                                                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                               => ( sP26
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( X1 = X2 )
                                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                                     => ( sP26
                                                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                                                     => ( X1 != X2 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                                         => ( X1 != X2 ) ) )
                                                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X1 @ X3 )
                                                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                           => ( sP1
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                                                     => ( X1 = X2 ) ) )
                                                                                                                               => ( ! [X1: $i] :
                                                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                                                     => ( X1 = emptyset ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                                                             => X4 )
                                                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                                                               => X4 )
                                                                                                                                                             => X4 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                                   => ( in @ X3
                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                                   => ( subset @ X3
                                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h57,assumption,
    in @ emptyset @ ( setadjoin @ emptyset @ emptyset ),
    introduced(assumption,[]) ).

thf(h58,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
           => ! [X4: $o] :
                ( ( ( X3 = X1 )
                 => X4 )
               => ( ( ( in @ X3 @ X2 )
                   => X4 )
                 => X4 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
             => ( ( X3 != X1 )
               => ( in @ X3 @ X2 ) ) )
         => ( ! [X1: $i] :
                ( ( dsetconstr @ X1
                  @ ^ [X2: $i] : ~ $false )
                = X1 )
           => ( ! [X1: $i,X2: $i] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ X1 ) )
                 => ( in @ X2 @ ( powerset @ X1 ) ) )
             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
               => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                 => ( sP7
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X2 @ X3 )
                         => ( ( in @ X3 @ X1 )
                           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X2 @ ( setunion @ X1 ) )
                           => ! [X3: $o] :
                                ( ! [X4: $i] :
                                    ( ( in @ X2 @ X4 )
                                   => ( ( in @ X4 @ X1 )
                                     => X3 ) )
                               => X3 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( in @ X2 @ X1 )
                             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ~ ! [X2: $i] :
                                      ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                          = ( X3 = X2 ) ) )
                           => ( ! [X1: $i] :
                                  ( ( nonempty @ X1 )
                                 => ~ ! [X2: $i] :
                                        ~ ( in @ X2 @ X1 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                   => ( X1 = X2 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 != X2 )
                                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                           => ( ( X3 != X1 )
                                             => ( X3 = X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) )
                                                 => ( ( dsetconstr @ X1 @ X2 )
                                                   != emptyset ) )
                                             => ( ! [X1: $i > $o,X2: $i] :
                                                    ( ( in @ X2 @ emptyset )
                                                   => ( X1 @ X2 ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) )
                                                     => ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) )
                                                       => ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) )
                                                         => ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) )
                                                           => ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $o] :
                                                              ( X1
                                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                         => ( ! [X1: $o] :
                                                                ( X1
                                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) )
                                                                 => ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ~ ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                    ( ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) )
                                                                   => ~ ! [X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( X2 @ X3 ) ) )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ~ ! [X2: $i] :
                                                                            ( ( X1 @ X2 )
                                                                           => ~ ! [X3: $i] :
                                                                                  ( ( X1 @ X3 )
                                                                                 => ( X2 = X3 ) ) )
                                                                     => ( exu @ X1 ) )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ~ ! [X2: $i] :
                                                                              ~ ( X1 @ X2 )
                                                                       => ( ! [X2: $i,X3: $i] :
                                                                              ( ( X1 @ X2 )
                                                                             => ( ( X1 @ X3 )
                                                                               => ( X2 = X3 ) ) )
                                                                         => ( exu @ X1 ) ) )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ~ ! [X2: $i] :
                                                                                ~ ! [X3: $i] :
                                                                                    ( ( X1 @ X3 )
                                                                                    = ( X3 = X2 ) )
                                                                         => ( exu @ X1 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ! [X3: $i,X4: $i] :
                                                                                ( ( X3 = X4 )
                                                                               => ( ( in @ X3 @ X1 )
                                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ! [X3: $i,X4: $i] :
                                                                                  ( ( X3 = X4 )
                                                                                 => ( ( in @ X3 @ X1 )
                                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ( exu @ X1 )
                                                                               => ! [X2: $i,X3: $i] :
                                                                                    ( ( X1 @ X2 )
                                                                                   => ( ( X1 @ X3 )
                                                                                     => ( X2 = X3 ) ) ) )
                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                      ( ( X3 = X4 )
                                                                                     => ( ( X1 @ X3 )
                                                                                        = ( X2 @ X4 ) ) )
                                                                                 => ( ( exu @ X1 )
                                                                                    = ( exu @ X2 ) ) )
                                                                             => ( ( emptyset = emptyset )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ! [X3: $i,X4: $i] :
                                                                                          ( ( X3 = X4 )
                                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ( ( powerset @ X1 )
                                                                                          = ( powerset @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ( ( setunion @ X1 )
                                                                                            = ( setunion @ X2 ) ) )
                                                                                     => ( ( omega = omega )
                                                                                       => ( ! [X1: $i > $o] :
                                                                                              ( ( exu @ X1 )
                                                                                             => ! [X2: $i,X3: $i] :
                                                                                                  ( ( X1 @ X2 )
                                                                                                 => ( ( X1 @ X3 )
                                                                                                   => ( X2 = X3 ) ) ) )
                                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                ( ! [X3: $i,X4: $i] :
                                                                                                    ( ( X3 = X4 )
                                                                                                   => ( ( X1 @ X3 )
                                                                                                      = ( X2 @ X4 ) ) )
                                                                                               => ( ( exu @ X1 )
                                                                                                 => ( ( exu @ X2 )
                                                                                                   => ( ( descr @ X1 )
                                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                      ( ! [X5: $i] :
                                                                                                          ( ( in @ X5 @ X1 )
                                                                                                         => ! [X6: $i] :
                                                                                                              ( ( in @ X6 @ X2 )
                                                                                                             => ( ( X5 = X6 )
                                                                                                               => ( ( X3 @ X5 )
                                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                             => ( sP26
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( X1 = X2 )
                                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                                   => ( sP26
                                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( ( in @ X3 @ X1 )
                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                                   => ( X1 != X2 ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                                       => ( X1 != X2 ) ) )
                                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                         => ( sP1
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                                             => ( ! [X1: $i] :
                                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                                   => ( X1 = emptyset ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                                           => X4 )
                                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                                             => X4 )
                                                                                                                                                           => X4 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                                 => ( in @ X3
                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                                                 => ( subset @ X3
                                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h59,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X2 )
     => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h60,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ! [X4: $o] :
              ( ( ( X3 = X1 )
               => X4 )
             => ( ( ( in @ X3 @ X2 )
                 => X4 )
               => X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
           => ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i] :
              ( ( dsetconstr @ X1
                @ ^ [X2: $i] : ~ $false )
              = X1 )
         => ( ! [X1: $i,X2: $i] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ X1 ) )
               => ( in @ X2 @ ( powerset @ X1 ) ) )
           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
             => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
               => ( sP7
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X2 @ X3 )
                       => ( ( in @ X3 @ X1 )
                         => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( in @ X2 @ ( setunion @ X1 ) )
                         => ! [X3: $o] :
                              ( ! [X4: $i] :
                                  ( ( in @ X2 @ X4 )
                                 => ( ( in @ X4 @ X1 )
                                   => X3 ) )
                             => X3 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X2 @ X1 )
                           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ~ ! [X2: $i] :
                                    ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                        = ( X3 = X2 ) ) )
                         => ( ! [X1: $i] :
                                ( ( nonempty @ X1 )
                               => ~ ! [X2: $i] :
                                      ~ ( in @ X2 @ X1 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                 => ( X1 = X2 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 != X2 )
                                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                         => ( ( X3 != X1 )
                                           => ( X3 = X2 ) ) )
                                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) )
                                               => ( ( dsetconstr @ X1 @ X2 )
                                                 != emptyset ) )
                                           => ( ! [X1: $i > $o,X2: $i] :
                                                  ( ( in @ X2 @ emptyset )
                                                 => ( X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) )
                                                   => ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) )
                                                     => ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) )
                                                       => ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) )
                                                         => ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $o] :
                                                            ( X1
                                                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                       => ( ! [X1: $o] :
                                                              ( X1
                                                             => ( set2prop @ ( prop2set @ X1 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) )
                                                               => ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ~ ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                  ( ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) )
                                                                 => ~ ! [X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( X2 @ X3 ) ) )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ~ ! [X2: $i] :
                                                                          ( ( X1 @ X2 )
                                                                         => ~ ! [X3: $i] :
                                                                                ( ( X1 @ X3 )
                                                                               => ( X2 = X3 ) ) )
                                                                   => ( exu @ X1 ) )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ~ ! [X2: $i] :
                                                                            ~ ( X1 @ X2 )
                                                                     => ( ! [X2: $i,X3: $i] :
                                                                            ( ( X1 @ X2 )
                                                                           => ( ( X1 @ X3 )
                                                                             => ( X2 = X3 ) ) )
                                                                       => ( exu @ X1 ) ) )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ~ ! [X2: $i] :
                                                                              ~ ! [X3: $i] :
                                                                                  ( ( X1 @ X3 )
                                                                                  = ( X3 = X2 ) )
                                                                       => ( exu @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ! [X3: $i,X4: $i] :
                                                                              ( ( X3 = X4 )
                                                                             => ( ( in @ X3 @ X1 )
                                                                               => ( in @ X4 @ X2 ) ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ! [X3: $i,X4: $i] :
                                                                                ( ( X3 = X4 )
                                                                               => ( ( in @ X3 @ X1 )
                                                                                  = ( in @ X4 @ X2 ) ) ) )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ( exu @ X1 )
                                                                             => ! [X2: $i,X3: $i] :
                                                                                  ( ( X1 @ X2 )
                                                                                 => ( ( X1 @ X3 )
                                                                                   => ( X2 = X3 ) ) ) )
                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                ( ! [X3: $i,X4: $i] :
                                                                                    ( ( X3 = X4 )
                                                                                   => ( ( X1 @ X3 )
                                                                                      = ( X2 @ X4 ) ) )
                                                                               => ( ( exu @ X1 )
                                                                                  = ( exu @ X2 ) ) )
                                                                           => ( ( emptyset = emptyset )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ! [X3: $i,X4: $i] :
                                                                                        ( ( X3 = X4 )
                                                                                       => ( ( setadjoin @ X1 @ X3 )
                                                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ( ( powerset @ X1 )
                                                                                        = ( powerset @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ( ( setunion @ X1 )
                                                                                          = ( setunion @ X2 ) ) )
                                                                                   => ( ( omega = omega )
                                                                                     => ( ! [X1: $i > $o] :
                                                                                            ( ( exu @ X1 )
                                                                                           => ! [X2: $i,X3: $i] :
                                                                                                ( ( X1 @ X2 )
                                                                                               => ( ( X1 @ X3 )
                                                                                                 => ( X2 = X3 ) ) ) )
                                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                              ( ! [X3: $i,X4: $i] :
                                                                                                  ( ( X3 = X4 )
                                                                                                 => ( ( X1 @ X3 )
                                                                                                    = ( X2 @ X4 ) ) )
                                                                                             => ( ( exu @ X1 )
                                                                                               => ( ( exu @ X2 )
                                                                                                 => ( ( descr @ X1 )
                                                                                                    = ( descr @ X2 ) ) ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                    ( ! [X5: $i] :
                                                                                                        ( ( in @ X5 @ X1 )
                                                                                                       => ! [X6: $i] :
                                                                                                            ( ( in @ X6 @ X2 )
                                                                                                           => ( ( X5 = X6 )
                                                                                                             => ( ( X3 @ X5 )
                                                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                           => ( sP26
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( X1 = X2 )
                                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                                 => ( sP26
                                                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                                                 => ( X1 != X2 ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                                     => ( X1 != X2 ) ) )
                                                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( subset @ X1 @ X3 )
                                                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                       => ( sP1
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                                                 => ( X1 = X2 ) ) )
                                                                                                                           => ( ! [X1: $i] :
                                                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                                                 => ( X1 = emptyset ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                                                         => X4 )
                                                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                                                           => X4 )
                                                                                                                                                         => X4 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                                                               => ( in @ X3
                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                                                               => ( subset @ X3
                                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h61,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
     => ! [X4: $o] :
          ( ( ( X3 = X1 )
           => X4 )
         => ( ( ( in @ X3 @ X2 )
             => X4 )
           => X4 ) ) ),
    introduced(assumption,[]) ).

thf(h62,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
         => ( ( X3 != X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i] :
            ( ( dsetconstr @ X1
              @ ^ [X2: $i] : ~ $false )
            = X1 )
       => ( ! [X1: $i,X2: $i] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ X1 ) )
             => ( in @ X2 @ ( powerset @ X1 ) ) )
         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
           => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
             => ( sP7
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X2 @ X3 )
                     => ( ( in @ X3 @ X1 )
                       => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( in @ X2 @ ( setunion @ X1 ) )
                       => ! [X3: $o] :
                            ( ! [X4: $i] :
                                ( ( in @ X2 @ X4 )
                               => ( ( in @ X4 @ X1 )
                                 => X3 ) )
                           => X3 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( in @ X2 @ X1 )
                         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ~ ! [X2: $i] :
                                  ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                      = ( X3 = X2 ) ) )
                       => ( ! [X1: $i] :
                              ( ( nonempty @ X1 )
                             => ~ ! [X2: $i] :
                                    ~ ( in @ X2 @ X1 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                               => ( X1 = X2 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 != X2 )
                                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                       => ( ( X3 != X1 )
                                         => ( X3 = X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) )
                                             => ( ( dsetconstr @ X1 @ X2 )
                                               != emptyset ) )
                                         => ( ! [X1: $i > $o,X2: $i] :
                                                ( ( in @ X2 @ emptyset )
                                               => ( X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) )
                                                 => ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) )
                                                   => ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) )
                                                     => ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) )
                                                       => ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $o] :
                                                          ( X1
                                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                     => ( ! [X1: $o] :
                                                            ( X1
                                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) )
                                                             => ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ~ ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                ( ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) )
                                                               => ~ ! [X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( X2 @ X3 ) ) )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ~ ! [X2: $i] :
                                                                        ( ( X1 @ X2 )
                                                                       => ~ ! [X3: $i] :
                                                                              ( ( X1 @ X3 )
                                                                             => ( X2 = X3 ) ) )
                                                                 => ( exu @ X1 ) )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ~ ! [X2: $i] :
                                                                          ~ ( X1 @ X2 )
                                                                   => ( ! [X2: $i,X3: $i] :
                                                                          ( ( X1 @ X2 )
                                                                         => ( ( X1 @ X3 )
                                                                           => ( X2 = X3 ) ) )
                                                                     => ( exu @ X1 ) ) )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ~ ! [X2: $i] :
                                                                            ~ ! [X3: $i] :
                                                                                ( ( X1 @ X3 )
                                                                                = ( X3 = X2 ) )
                                                                     => ( exu @ X1 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ! [X3: $i,X4: $i] :
                                                                            ( ( X3 = X4 )
                                                                           => ( ( in @ X3 @ X1 )
                                                                             => ( in @ X4 @ X2 ) ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ! [X3: $i,X4: $i] :
                                                                              ( ( X3 = X4 )
                                                                             => ( ( in @ X3 @ X1 )
                                                                                = ( in @ X4 @ X2 ) ) ) )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ( exu @ X1 )
                                                                           => ! [X2: $i,X3: $i] :
                                                                                ( ( X1 @ X2 )
                                                                               => ( ( X1 @ X3 )
                                                                                 => ( X2 = X3 ) ) ) )
                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                              ( ! [X3: $i,X4: $i] :
                                                                                  ( ( X3 = X4 )
                                                                                 => ( ( X1 @ X3 )
                                                                                    = ( X2 @ X4 ) ) )
                                                                             => ( ( exu @ X1 )
                                                                                = ( exu @ X2 ) ) )
                                                                         => ( ( emptyset = emptyset )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ! [X3: $i,X4: $i] :
                                                                                      ( ( X3 = X4 )
                                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ( ( powerset @ X1 )
                                                                                      = ( powerset @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ( ( setunion @ X1 )
                                                                                        = ( setunion @ X2 ) ) )
                                                                                 => ( ( omega = omega )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ( exu @ X1 )
                                                                                         => ! [X2: $i,X3: $i] :
                                                                                              ( ( X1 @ X2 )
                                                                                             => ( ( X1 @ X3 )
                                                                                               => ( X2 = X3 ) ) ) )
                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                ( ( X3 = X4 )
                                                                                               => ( ( X1 @ X3 )
                                                                                                  = ( X2 @ X4 ) ) )
                                                                                           => ( ( exu @ X1 )
                                                                                             => ( ( exu @ X2 )
                                                                                               => ( ( descr @ X1 )
                                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                  ( ! [X5: $i] :
                                                                                                      ( ( in @ X5 @ X1 )
                                                                                                     => ! [X6: $i] :
                                                                                                          ( ( in @ X6 @ X2 )
                                                                                                         => ( ( X5 = X6 )
                                                                                                           => ( ( X3 @ X5 )
                                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                         => ( sP26
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( X1 = X2 )
                                                                                                   => ( subset @ X1 @ X2 ) )
                                                                                               => ( sP26
                                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                                               => ( X1 != X2 ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                                   => ( X1 != X2 ) ) )
                                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                     => ( sP1
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                                               => ( X1 = X2 ) ) )
                                                                                                                         => ( ! [X1: $i] :
                                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                                               => ( X1 = emptyset ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                                       => X4 )
                                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                                         => X4 )
                                                                                                                                                       => X4 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                                             => ( in @ X3
                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                                             => ( subset @ X3
                                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h63,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
     => ( ( X3 != X1 )
       => ( in @ X3 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h64,assumption,
    ~ ( ! [X1: $i] :
          ( ( dsetconstr @ X1
            @ ^ [X2: $i] : ~ $false )
          = X1 )
     => ( ! [X1: $i,X2: $i] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ X1 ) )
           => ( in @ X2 @ ( powerset @ X1 ) ) )
       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
           => ( sP7
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X2 @ X3 )
                   => ( ( in @ X3 @ X1 )
                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X2 @ ( setunion @ X1 ) )
                     => ! [X3: $o] :
                          ( ! [X4: $i] :
                              ( ( in @ X2 @ X4 )
                             => ( ( in @ X4 @ X1 )
                               => X3 ) )
                         => X3 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( in @ X2 @ X1 )
                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ~ ! [X2: $i] :
                                ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                    = ( X3 = X2 ) ) )
                     => ( ! [X1: $i] :
                            ( ( nonempty @ X1 )
                           => ~ ! [X2: $i] :
                                  ~ ( in @ X2 @ X1 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                             => ( X1 = X2 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 != X2 )
                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                     => ( ( X3 != X1 )
                                       => ( X3 = X2 ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) )
                                           => ( ( dsetconstr @ X1 @ X2 )
                                             != emptyset ) )
                                       => ( ! [X1: $i > $o,X2: $i] :
                                              ( ( in @ X2 @ emptyset )
                                             => ( X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) )
                                               => ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) )
                                                 => ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) )
                                                   => ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) )
                                                     => ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $o] :
                                                        ( X1
                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                   => ( ! [X1: $o] :
                                                          ( X1
                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) )
                                                           => ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ~ ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                              ( ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) )
                                                             => ~ ! [X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( X2 @ X3 ) ) )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ~ ! [X2: $i] :
                                                                      ( ( X1 @ X2 )
                                                                     => ~ ! [X3: $i] :
                                                                            ( ( X1 @ X3 )
                                                                           => ( X2 = X3 ) ) )
                                                               => ( exu @ X1 ) )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ~ ! [X2: $i] :
                                                                        ~ ( X1 @ X2 )
                                                                 => ( ! [X2: $i,X3: $i] :
                                                                        ( ( X1 @ X2 )
                                                                       => ( ( X1 @ X3 )
                                                                         => ( X2 = X3 ) ) )
                                                                   => ( exu @ X1 ) ) )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ~ ! [X2: $i] :
                                                                          ~ ! [X3: $i] :
                                                                              ( ( X1 @ X3 )
                                                                              = ( X3 = X2 ) )
                                                                   => ( exu @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ! [X3: $i,X4: $i] :
                                                                          ( ( X3 = X4 )
                                                                         => ( ( in @ X3 @ X1 )
                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ! [X3: $i,X4: $i] :
                                                                            ( ( X3 = X4 )
                                                                           => ( ( in @ X3 @ X1 )
                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ( exu @ X1 )
                                                                         => ! [X2: $i,X3: $i] :
                                                                              ( ( X1 @ X2 )
                                                                             => ( ( X1 @ X3 )
                                                                               => ( X2 = X3 ) ) ) )
                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                            ( ! [X3: $i,X4: $i] :
                                                                                ( ( X3 = X4 )
                                                                               => ( ( X1 @ X3 )
                                                                                  = ( X2 @ X4 ) ) )
                                                                           => ( ( exu @ X1 )
                                                                              = ( exu @ X2 ) ) )
                                                                       => ( ( emptyset = emptyset )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ! [X3: $i,X4: $i] :
                                                                                    ( ( X3 = X4 )
                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ( ( powerset @ X1 )
                                                                                    = ( powerset @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ( ( setunion @ X1 )
                                                                                      = ( setunion @ X2 ) ) )
                                                                               => ( ( omega = omega )
                                                                                 => ( ! [X1: $i > $o] :
                                                                                        ( ( exu @ X1 )
                                                                                       => ! [X2: $i,X3: $i] :
                                                                                            ( ( X1 @ X2 )
                                                                                           => ( ( X1 @ X3 )
                                                                                             => ( X2 = X3 ) ) ) )
                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                              ( ( X3 = X4 )
                                                                                             => ( ( X1 @ X3 )
                                                                                                = ( X2 @ X4 ) ) )
                                                                                         => ( ( exu @ X1 )
                                                                                           => ( ( exu @ X2 )
                                                                                             => ( ( descr @ X1 )
                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                ( ! [X5: $i] :
                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                   => ! [X6: $i] :
                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                       => ( ( X5 = X6 )
                                                                                                         => ( ( X3 @ X5 )
                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                       => ( sP26
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                             => ( sP26
                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                             => ( X1 != X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                   => ( sP1
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                       => ( ! [X1: $i] :
                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                     => X4 )
                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                       => X4 )
                                                                                                                                                     => X4 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                           => ( in @ X3
                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                           => ( subset @ X3
                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h65,assumption,
    ! [X1: $i] :
      ( ( dsetconstr @ X1
        @ ^ [X2: $i] : ~ $false )
      = X1 ),
    introduced(assumption,[]) ).

thf(h66,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ X1 ) )
         => ( in @ X2 @ ( powerset @ X1 ) ) )
     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
         => ( sP7
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X2 @ X3 )
                 => ( ( in @ X3 @ X1 )
                   => ( in @ X2 @ ( setunion @ X1 ) ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X2 @ ( setunion @ X1 ) )
                   => ! [X3: $o] :
                        ( ! [X4: $i] :
                            ( ( in @ X2 @ X4 )
                           => ( ( in @ X4 @ X1 )
                             => X3 ) )
                       => X3 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X2 @ X1 )
                     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ~ ! [X2: $i] :
                              ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                  = ( X3 = X2 ) ) )
                   => ( ! [X1: $i] :
                          ( ( nonempty @ X1 )
                         => ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                           => ( X1 = X2 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 != X2 )
                             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                   => ( ( X3 != X1 )
                                     => ( X3 = X2 ) ) )
                               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) )
                                         => ( ( dsetconstr @ X1 @ X2 )
                                           != emptyset ) )
                                     => ( ! [X1: $i > $o,X2: $i] :
                                            ( ( in @ X2 @ emptyset )
                                           => ( X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) )
                                             => ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) )
                                               => ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) )
                                                 => ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) )
                                                   => ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) ) )
                                               => ( ! [X1: $o] :
                                                      ( X1
                                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                 => ( ! [X1: $o] :
                                                        ( X1
                                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) )
                                                         => ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ~ ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                            ( ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) )
                                                           => ~ ! [X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( X2 @ X3 ) ) )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ~ ! [X2: $i] :
                                                                    ( ( X1 @ X2 )
                                                                   => ~ ! [X3: $i] :
                                                                          ( ( X1 @ X3 )
                                                                         => ( X2 = X3 ) ) )
                                                             => ( exu @ X1 ) )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ~ ! [X2: $i] :
                                                                      ~ ( X1 @ X2 )
                                                               => ( ! [X2: $i,X3: $i] :
                                                                      ( ( X1 @ X2 )
                                                                     => ( ( X1 @ X3 )
                                                                       => ( X2 = X3 ) ) )
                                                                 => ( exu @ X1 ) ) )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ~ ! [X2: $i] :
                                                                        ~ ! [X3: $i] :
                                                                            ( ( X1 @ X3 )
                                                                            = ( X3 = X2 ) )
                                                                 => ( exu @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ! [X3: $i,X4: $i] :
                                                                        ( ( X3 = X4 )
                                                                       => ( ( in @ X3 @ X1 )
                                                                         => ( in @ X4 @ X2 ) ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ! [X3: $i,X4: $i] :
                                                                          ( ( X3 = X4 )
                                                                         => ( ( in @ X3 @ X1 )
                                                                            = ( in @ X4 @ X2 ) ) ) )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ( exu @ X1 )
                                                                       => ! [X2: $i,X3: $i] :
                                                                            ( ( X1 @ X2 )
                                                                           => ( ( X1 @ X3 )
                                                                             => ( X2 = X3 ) ) ) )
                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                          ( ! [X3: $i,X4: $i] :
                                                                              ( ( X3 = X4 )
                                                                             => ( ( X1 @ X3 )
                                                                                = ( X2 @ X4 ) ) )
                                                                         => ( ( exu @ X1 )
                                                                            = ( exu @ X2 ) ) )
                                                                     => ( ( emptyset = emptyset )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ! [X3: $i,X4: $i] :
                                                                                  ( ( X3 = X4 )
                                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ( ( powerset @ X1 )
                                                                                  = ( powerset @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ( ( setunion @ X1 )
                                                                                    = ( setunion @ X2 ) ) )
                                                                             => ( ( omega = omega )
                                                                               => ( ! [X1: $i > $o] :
                                                                                      ( ( exu @ X1 )
                                                                                     => ! [X2: $i,X3: $i] :
                                                                                          ( ( X1 @ X2 )
                                                                                         => ( ( X1 @ X3 )
                                                                                           => ( X2 = X3 ) ) ) )
                                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                        ( ! [X3: $i,X4: $i] :
                                                                                            ( ( X3 = X4 )
                                                                                           => ( ( X1 @ X3 )
                                                                                              = ( X2 @ X4 ) ) )
                                                                                       => ( ( exu @ X1 )
                                                                                         => ( ( exu @ X2 )
                                                                                           => ( ( descr @ X1 )
                                                                                              = ( descr @ X2 ) ) ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                                              ( ! [X5: $i] :
                                                                                                  ( ( in @ X5 @ X1 )
                                                                                                 => ! [X6: $i] :
                                                                                                      ( ( in @ X6 @ X2 )
                                                                                                     => ( ( X5 = X6 )
                                                                                                       => ( ( X3 @ X5 )
                                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                     => ( sP26
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 = X2 )
                                                                                               => ( subset @ X1 @ X2 ) )
                                                                                           => ( sP26
                                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                     => ( ( in @ X3 @ X1 )
                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                                           => ( X1 != X2 ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                                               => ( X1 != X2 ) ) )
                                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                 => ( sP1
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                                           => ( X1 = X2 ) ) )
                                                                                                                     => ( ! [X1: $i] :
                                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                                           => ( X1 = emptyset ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                                   => X4 )
                                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                                     => X4 )
                                                                                                                                                   => X4 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                                         => ( in @ X3
                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                                         => ( subset @ X3
                                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h67,assumption,
    ! [X1: $i,X2: $i] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ X1 ) )
     => ( in @ X2 @ ( powerset @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h68,assumption,
    ~ ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
     => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
       => ( sP7
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X2 @ X3 )
               => ( ( in @ X3 @ X1 )
                 => ( in @ X2 @ ( setunion @ X1 ) ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X2 @ ( setunion @ X1 ) )
                 => ! [X3: $o] :
                      ( ! [X4: $i] :
                          ( ( in @ X2 @ X4 )
                         => ( ( in @ X4 @ X1 )
                           => X3 ) )
                     => X3 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X2 @ X1 )
                   => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ~ ! [X2: $i] :
                            ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                                = ( X3 = X2 ) ) )
                 => ( ! [X1: $i] :
                        ( ( nonempty @ X1 )
                       => ~ ! [X2: $i] :
                              ~ ( in @ X2 @ X1 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                         => ( X1 = X2 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 != X2 )
                           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                 => ( ( X3 != X1 )
                                   => ( X3 = X2 ) ) )
                             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) )
                                       => ( ( dsetconstr @ X1 @ X2 )
                                         != emptyset ) )
                                   => ( ! [X1: $i > $o,X2: $i] :
                                          ( ( in @ X2 @ emptyset )
                                         => ( X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) )
                                           => ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) )
                                             => ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) )
                                               => ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) )
                                                 => ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) ) )
                                             => ( ! [X1: $o] :
                                                    ( X1
                                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                               => ( ! [X1: $o] :
                                                      ( X1
                                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) )
                                                       => ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ~ ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] :
                                                          ( ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) )
                                                         => ~ ! [X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( X2 @ X3 ) ) )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ~ ! [X2: $i] :
                                                                  ( ( X1 @ X2 )
                                                                 => ~ ! [X3: $i] :
                                                                        ( ( X1 @ X3 )
                                                                       => ( X2 = X3 ) ) )
                                                           => ( exu @ X1 ) )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ~ ! [X2: $i] :
                                                                    ~ ( X1 @ X2 )
                                                             => ( ! [X2: $i,X3: $i] :
                                                                    ( ( X1 @ X2 )
                                                                   => ( ( X1 @ X3 )
                                                                     => ( X2 = X3 ) ) )
                                                               => ( exu @ X1 ) ) )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ~ ! [X2: $i] :
                                                                      ~ ! [X3: $i] :
                                                                          ( ( X1 @ X3 )
                                                                          = ( X3 = X2 ) )
                                                               => ( exu @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( in @ X3 @ X1 )
                                                                       => ( in @ X4 @ X2 ) ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ! [X3: $i,X4: $i] :
                                                                        ( ( X3 = X4 )
                                                                       => ( ( in @ X3 @ X1 )
                                                                          = ( in @ X4 @ X2 ) ) ) )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ( exu @ X1 )
                                                                     => ! [X2: $i,X3: $i] :
                                                                          ( ( X1 @ X2 )
                                                                         => ( ( X1 @ X3 )
                                                                           => ( X2 = X3 ) ) ) )
                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                        ( ! [X3: $i,X4: $i] :
                                                                            ( ( X3 = X4 )
                                                                           => ( ( X1 @ X3 )
                                                                              = ( X2 @ X4 ) ) )
                                                                       => ( ( exu @ X1 )
                                                                          = ( exu @ X2 ) ) )
                                                                   => ( ( emptyset = emptyset )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ! [X3: $i,X4: $i] :
                                                                                ( ( X3 = X4 )
                                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ( ( powerset @ X1 )
                                                                                = ( powerset @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ( ( setunion @ X1 )
                                                                                  = ( setunion @ X2 ) ) )
                                                                           => ( ( omega = omega )
                                                                             => ( ! [X1: $i > $o] :
                                                                                    ( ( exu @ X1 )
                                                                                   => ! [X2: $i,X3: $i] :
                                                                                        ( ( X1 @ X2 )
                                                                                       => ( ( X1 @ X3 )
                                                                                         => ( X2 = X3 ) ) ) )
                                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                      ( ! [X3: $i,X4: $i] :
                                                                                          ( ( X3 = X4 )
                                                                                         => ( ( X1 @ X3 )
                                                                                            = ( X2 @ X4 ) ) )
                                                                                     => ( ( exu @ X1 )
                                                                                       => ( ( exu @ X2 )
                                                                                         => ( ( descr @ X1 )
                                                                                            = ( descr @ X2 ) ) ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                                            ( ! [X5: $i] :
                                                                                                ( ( in @ X5 @ X1 )
                                                                                               => ! [X6: $i] :
                                                                                                    ( ( in @ X6 @ X2 )
                                                                                                   => ( ( X5 = X6 )
                                                                                                     => ( ( X3 @ X5 )
                                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                   => ( sP26
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( X1 = X2 )
                                                                                             => ( subset @ X1 @ X2 ) )
                                                                                         => ( sP26
                                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( ( in @ X3 @ X1 )
                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                                         => ( X1 != X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                             => ( X1 != X2 ) ) )
                                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                               => ( sP1
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                   => ( ! [X1: $i] :
                                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                                         => ( X1 = emptyset ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                                 => X4 )
                                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                                   => X4 )
                                                                                                                                                 => X4 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                                       => ( in @ X3
                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                                       => ( subset @ X3
                                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h69,assumption,
    ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) ),
    introduced(assumption,[]) ).

thf(h70,assumption,
    ~ ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
     => ( sP7
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X2 @ X3 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X2 @ ( setunion @ X1 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( setunion @ X1 ) )
               => ! [X3: $o] :
                    ( ! [X4: $i] :
                        ( ( in @ X2 @ X4 )
                       => ( ( in @ X4 @ X1 )
                         => X3 ) )
                   => X3 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X2 @ X1 )
                 => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ~ ! [X2: $i] :
                          ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                              = ( X3 = X2 ) ) )
               => ( ! [X1: $i] :
                      ( ( nonempty @ X1 )
                     => ~ ! [X2: $i] :
                            ~ ( in @ X2 @ X1 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                       => ( X1 = X2 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 != X2 )
                         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                               => ( ( X3 != X1 )
                                 => ( X3 = X2 ) ) )
                           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) )
                                     => ( ( dsetconstr @ X1 @ X2 )
                                       != emptyset ) )
                                 => ( ! [X1: $i > $o,X2: $i] :
                                        ( ( in @ X2 @ emptyset )
                                       => ( X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) )
                                         => ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) )
                                           => ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) )
                                             => ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) )
                                               => ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) ) )
                                           => ( ! [X1: $o] :
                                                  ( X1
                                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                             => ( ! [X1: $o] :
                                                    ( X1
                                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) )
                                                     => ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ~ ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] :
                                                        ( ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) )
                                                       => ~ ! [X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ~ ! [X2: $i] :
                                                                ( ( X1 @ X2 )
                                                               => ~ ! [X3: $i] :
                                                                      ( ( X1 @ X3 )
                                                                     => ( X2 = X3 ) ) )
                                                         => ( exu @ X1 ) )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ~ ! [X2: $i] :
                                                                  ~ ( X1 @ X2 )
                                                           => ( ! [X2: $i,X3: $i] :
                                                                  ( ( X1 @ X2 )
                                                                 => ( ( X1 @ X3 )
                                                                   => ( X2 = X3 ) ) )
                                                             => ( exu @ X1 ) ) )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ~ ! [X2: $i] :
                                                                    ~ ! [X3: $i] :
                                                                        ( ( X1 @ X3 )
                                                                        = ( X3 = X2 ) )
                                                             => ( exu @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ! [X3: $i,X4: $i] :
                                                                    ( ( X3 = X4 )
                                                                   => ( ( in @ X3 @ X1 )
                                                                     => ( in @ X4 @ X2 ) ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( in @ X3 @ X1 )
                                                                        = ( in @ X4 @ X2 ) ) ) )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ( exu @ X1 )
                                                                   => ! [X2: $i,X3: $i] :
                                                                        ( ( X1 @ X2 )
                                                                       => ( ( X1 @ X3 )
                                                                         => ( X2 = X3 ) ) ) )
                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                      ( ! [X3: $i,X4: $i] :
                                                                          ( ( X3 = X4 )
                                                                         => ( ( X1 @ X3 )
                                                                            = ( X2 @ X4 ) ) )
                                                                     => ( ( exu @ X1 )
                                                                        = ( exu @ X2 ) ) )
                                                                 => ( ( emptyset = emptyset )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ! [X3: $i,X4: $i] :
                                                                              ( ( X3 = X4 )
                                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ( ( powerset @ X1 )
                                                                              = ( powerset @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ( ( setunion @ X1 )
                                                                                = ( setunion @ X2 ) ) )
                                                                         => ( ( omega = omega )
                                                                           => ( ! [X1: $i > $o] :
                                                                                  ( ( exu @ X1 )
                                                                                 => ! [X2: $i,X3: $i] :
                                                                                      ( ( X1 @ X2 )
                                                                                     => ( ( X1 @ X3 )
                                                                                       => ( X2 = X3 ) ) ) )
                                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                    ( ! [X3: $i,X4: $i] :
                                                                                        ( ( X3 = X4 )
                                                                                       => ( ( X1 @ X3 )
                                                                                          = ( X2 @ X4 ) ) )
                                                                                   => ( ( exu @ X1 )
                                                                                     => ( ( exu @ X2 )
                                                                                       => ( ( descr @ X1 )
                                                                                          = ( descr @ X2 ) ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                                          ( ! [X5: $i] :
                                                                                              ( ( in @ X5 @ X1 )
                                                                                             => ! [X6: $i] :
                                                                                                  ( ( in @ X6 @ X2 )
                                                                                                 => ( ( X5 = X6 )
                                                                                                   => ( ( X3 @ X5 )
                                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                 => ( sP26
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( X1 = X2 )
                                                                                           => ( subset @ X1 @ X2 ) )
                                                                                       => ( sP26
                                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( ( in @ X3 @ X1 )
                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                                       => ( X1 != X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                           => ( X1 != X2 ) ) )
                                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                             => ( sP1
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                 => ( ! [X1: $i] :
                                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                                       => ( X1 = emptyset ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                                               => X4 )
                                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                                 => X4 )
                                                                                                                                               => X4 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                                     => ( in @ X3
                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                                     => ( subset @ X3
                                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h71,assumption,
    ~ ( sP7
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X2 @ X3 )
           => ( ( in @ X3 @ X1 )
             => ( in @ X2 @ ( setunion @ X1 ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( setunion @ X1 ) )
             => ! [X3: $o] :
                  ( ! [X4: $i] :
                      ( ( in @ X2 @ X4 )
                     => ( ( in @ X4 @ X1 )
                       => X3 ) )
                 => X3 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ X1 )
               => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ~ ! [X2: $i] :
                        ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                            = ( X3 = X2 ) ) )
             => ( ! [X1: $i] :
                    ( ( nonempty @ X1 )
                   => ~ ! [X2: $i] :
                          ~ ( in @ X2 @ X1 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                     => ( X1 = X2 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 != X2 )
                       => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ( X3 != X1 )
                               => ( X3 = X2 ) ) )
                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) )
                                   => ( ( dsetconstr @ X1 @ X2 )
                                     != emptyset ) )
                               => ( ! [X1: $i > $o,X2: $i] :
                                      ( ( in @ X2 @ emptyset )
                                     => ( X1 @ X2 ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) )
                                       => ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) )
                                         => ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) )
                                           => ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) )
                                             => ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) ) )
                                         => ( ! [X1: $o] :
                                                ( X1
                                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                           => ( ! [X1: $o] :
                                                  ( X1
                                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) )
                                                   => ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ~ ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] :
                                                      ( ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) )
                                                     => ~ ! [X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( X2 @ X3 ) ) )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ~ ! [X2: $i] :
                                                              ( ( X1 @ X2 )
                                                             => ~ ! [X3: $i] :
                                                                    ( ( X1 @ X3 )
                                                                   => ( X2 = X3 ) ) )
                                                       => ( exu @ X1 ) )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ~ ! [X2: $i] :
                                                                ~ ( X1 @ X2 )
                                                         => ( ! [X2: $i,X3: $i] :
                                                                ( ( X1 @ X2 )
                                                               => ( ( X1 @ X3 )
                                                                 => ( X2 = X3 ) ) )
                                                           => ( exu @ X1 ) ) )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ~ ! [X2: $i] :
                                                                  ~ ! [X3: $i] :
                                                                      ( ( X1 @ X3 )
                                                                      = ( X3 = X2 ) )
                                                           => ( exu @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ! [X3: $i,X4: $i] :
                                                                  ( ( X3 = X4 )
                                                                 => ( ( in @ X3 @ X1 )
                                                                   => ( in @ X4 @ X2 ) ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ! [X3: $i,X4: $i] :
                                                                    ( ( X3 = X4 )
                                                                   => ( ( in @ X3 @ X1 )
                                                                      = ( in @ X4 @ X2 ) ) ) )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ( exu @ X1 )
                                                                 => ! [X2: $i,X3: $i] :
                                                                      ( ( X1 @ X2 )
                                                                     => ( ( X1 @ X3 )
                                                                       => ( X2 = X3 ) ) ) )
                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                    ( ! [X3: $i,X4: $i] :
                                                                        ( ( X3 = X4 )
                                                                       => ( ( X1 @ X3 )
                                                                          = ( X2 @ X4 ) ) )
                                                                   => ( ( exu @ X1 )
                                                                      = ( exu @ X2 ) ) )
                                                               => ( ( emptyset = emptyset )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ! [X3: $i,X4: $i] :
                                                                            ( ( X3 = X4 )
                                                                           => ( ( setadjoin @ X1 @ X3 )
                                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( ( powerset @ X1 )
                                                                            = ( powerset @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ( ( setunion @ X1 )
                                                                              = ( setunion @ X2 ) ) )
                                                                       => ( ( omega = omega )
                                                                         => ( ! [X1: $i > $o] :
                                                                                ( ( exu @ X1 )
                                                                               => ! [X2: $i,X3: $i] :
                                                                                    ( ( X1 @ X2 )
                                                                                   => ( ( X1 @ X3 )
                                                                                     => ( X2 = X3 ) ) ) )
                                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                  ( ! [X3: $i,X4: $i] :
                                                                                      ( ( X3 = X4 )
                                                                                     => ( ( X1 @ X3 )
                                                                                        = ( X2 @ X4 ) ) )
                                                                                 => ( ( exu @ X1 )
                                                                                   => ( ( exu @ X2 )
                                                                                     => ( ( descr @ X1 )
                                                                                        = ( descr @ X2 ) ) ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                                        ( ! [X5: $i] :
                                                                                            ( ( in @ X5 @ X1 )
                                                                                           => ! [X6: $i] :
                                                                                                ( ( in @ X6 @ X2 )
                                                                                               => ( ( X5 = X6 )
                                                                                                 => ( ( X3 @ X5 )
                                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                               => ( sP26
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( X1 = X2 )
                                                                                         => ( subset @ X1 @ X2 ) )
                                                                                     => ( sP26
                                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X1 @ X2 )
                                                                                               => ( ( in @ X3 @ X1 )
                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                                     => ( X1 != X2 ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                                         => ( X1 != X2 ) ) )
                                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( subset @ X1 @ X3 )
                                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                           => ( sP1
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                                     => ( X1 = X2 ) ) )
                                                                                                               => ( ! [X1: $i] :
                                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                                     => ( X1 = emptyset ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                                             => X4 )
                                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                                               => X4 )
                                                                                                                                             => X4 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                                   => ( in @ X3
                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                                   => ( subset @ X3
                                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h72,assumption,
    sP7,
    introduced(assumption,[]) ).

thf(h73,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X2 @ X3 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X2 @ ( setunion @ X1 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( setunion @ X1 ) )
           => ! [X3: $o] :
                ( ! [X4: $i] :
                    ( ( in @ X2 @ X4 )
                   => ( ( in @ X4 @ X1 )
                     => X3 ) )
               => X3 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ X1 )
             => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ~ ! [X2: $i] :
                      ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                          = ( X3 = X2 ) ) )
           => ( ! [X1: $i] :
                  ( ( nonempty @ X1 )
                 => ~ ! [X2: $i] :
                        ~ ( in @ X2 @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                   => ( X1 = X2 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 != X2 )
                     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                           => ( ( X3 != X1 )
                             => ( X3 = X2 ) ) )
                       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) )
                                 => ( ( dsetconstr @ X1 @ X2 )
                                   != emptyset ) )
                             => ( ! [X1: $i > $o,X2: $i] :
                                    ( ( in @ X2 @ emptyset )
                                   => ( X1 @ X2 ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) )
                                     => ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) )
                                       => ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) )
                                         => ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) )
                                           => ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) ) )
                                       => ( ! [X1: $o] :
                                              ( X1
                                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                         => ( ! [X1: $o] :
                                                ( X1
                                               => ( set2prop @ ( prop2set @ X1 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) )
                                                 => ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ~ ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] :
                                                    ( ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) )
                                                   => ~ ! [X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( X2 @ X3 ) ) )
                                               => ( ! [X1: $i > $o] :
                                                      ( ~ ! [X2: $i] :
                                                            ( ( X1 @ X2 )
                                                           => ~ ! [X3: $i] :
                                                                  ( ( X1 @ X3 )
                                                                 => ( X2 = X3 ) ) )
                                                     => ( exu @ X1 ) )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ~ ! [X2: $i] :
                                                              ~ ( X1 @ X2 )
                                                       => ( ! [X2: $i,X3: $i] :
                                                              ( ( X1 @ X2 )
                                                             => ( ( X1 @ X3 )
                                                               => ( X2 = X3 ) ) )
                                                         => ( exu @ X1 ) ) )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ~ ! [X2: $i] :
                                                                ~ ! [X3: $i] :
                                                                    ( ( X1 @ X3 )
                                                                    = ( X3 = X2 ) )
                                                         => ( exu @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ! [X3: $i,X4: $i] :
                                                                ( ( X3 = X4 )
                                                               => ( ( in @ X3 @ X1 )
                                                                 => ( in @ X4 @ X2 ) ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ! [X3: $i,X4: $i] :
                                                                  ( ( X3 = X4 )
                                                                 => ( ( in @ X3 @ X1 )
                                                                    = ( in @ X4 @ X2 ) ) ) )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ( exu @ X1 )
                                                               => ! [X2: $i,X3: $i] :
                                                                    ( ( X1 @ X2 )
                                                                   => ( ( X1 @ X3 )
                                                                     => ( X2 = X3 ) ) ) )
                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                  ( ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( X1 @ X3 )
                                                                        = ( X2 @ X4 ) ) )
                                                                 => ( ( exu @ X1 )
                                                                    = ( exu @ X2 ) ) )
                                                             => ( ( emptyset = emptyset )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ! [X3: $i,X4: $i] :
                                                                          ( ( X3 = X4 )
                                                                         => ( ( setadjoin @ X1 @ X3 )
                                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( ( powerset @ X1 )
                                                                          = ( powerset @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( ( setunion @ X1 )
                                                                            = ( setunion @ X2 ) ) )
                                                                     => ( ( omega = omega )
                                                                       => ( ! [X1: $i > $o] :
                                                                              ( ( exu @ X1 )
                                                                             => ! [X2: $i,X3: $i] :
                                                                                  ( ( X1 @ X2 )
                                                                                 => ( ( X1 @ X3 )
                                                                                   => ( X2 = X3 ) ) ) )
                                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                ( ! [X3: $i,X4: $i] :
                                                                                    ( ( X3 = X4 )
                                                                                   => ( ( X1 @ X3 )
                                                                                      = ( X2 @ X4 ) ) )
                                                                               => ( ( exu @ X1 )
                                                                                 => ( ( exu @ X2 )
                                                                                   => ( ( descr @ X1 )
                                                                                      = ( descr @ X2 ) ) ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                                      ( ! [X5: $i] :
                                                                                          ( ( in @ X5 @ X1 )
                                                                                         => ! [X6: $i] :
                                                                                              ( ( in @ X6 @ X2 )
                                                                                             => ( ( X5 = X6 )
                                                                                               => ( ( X3 @ X5 )
                                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                             => ( sP26
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( X1 = X2 )
                                                                                       => ( subset @ X1 @ X2 ) )
                                                                                   => ( sP26
                                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( ( in @ X3 @ X1 )
                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X1 @ X2 )
                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                                   => ( X1 != X2 ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                                       => ( X1 != X2 ) ) )
                                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( subset @ X1 @ X3 )
                                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                         => ( sP1
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                                   => ( X1 = X2 ) ) )
                                                                                                             => ( ! [X1: $i] :
                                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                                   => ( X1 = emptyset ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                                           => X4 )
                                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                                             => X4 )
                                                                                                                                           => X4 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                                 => ( in @ X3
                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                                 => ( subset @ X3
                                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h74,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X2 @ X3 )
     => ( ( in @ X3 @ X1 )
       => ( in @ X2 @ ( setunion @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h75,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( setunion @ X1 ) )
         => ! [X3: $o] :
              ( ! [X4: $i] :
                  ( ( in @ X2 @ X4 )
                 => ( ( in @ X4 @ X1 )
                   => X3 ) )
             => X3 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ X1 )
           => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ~ ! [X2: $i] :
                    ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                        = ( X3 = X2 ) ) )
         => ( ! [X1: $i] :
                ( ( nonempty @ X1 )
               => ~ ! [X2: $i] :
                      ~ ( in @ X2 @ X1 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                 => ( X1 = X2 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 != X2 )
                   => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                         => ( ( X3 != X1 )
                           => ( X3 = X2 ) ) )
                     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) )
                               => ( ( dsetconstr @ X1 @ X2 )
                                 != emptyset ) )
                           => ( ! [X1: $i > $o,X2: $i] :
                                  ( ( in @ X2 @ emptyset )
                                 => ( X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) )
                                   => ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) )
                                     => ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) )
                                       => ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) )
                                         => ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) ) )
                                     => ( ! [X1: $o] :
                                            ( X1
                                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                       => ( ! [X1: $o] :
                                              ( X1
                                             => ( set2prop @ ( prop2set @ X1 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) )
                                               => ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ~ ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] :
                                                  ( ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) )
                                                 => ~ ! [X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( X2 @ X3 ) ) )
                                             => ( ! [X1: $i > $o] :
                                                    ( ~ ! [X2: $i] :
                                                          ( ( X1 @ X2 )
                                                         => ~ ! [X3: $i] :
                                                                ( ( X1 @ X3 )
                                                               => ( X2 = X3 ) ) )
                                                   => ( exu @ X1 ) )
                                               => ( ! [X1: $i > $o] :
                                                      ( ~ ! [X2: $i] :
                                                            ~ ( X1 @ X2 )
                                                     => ( ! [X2: $i,X3: $i] :
                                                            ( ( X1 @ X2 )
                                                           => ( ( X1 @ X3 )
                                                             => ( X2 = X3 ) ) )
                                                       => ( exu @ X1 ) ) )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ~ ! [X2: $i] :
                                                              ~ ! [X3: $i] :
                                                                  ( ( X1 @ X3 )
                                                                  = ( X3 = X2 ) )
                                                       => ( exu @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ! [X3: $i,X4: $i] :
                                                              ( ( X3 = X4 )
                                                             => ( ( in @ X3 @ X1 )
                                                               => ( in @ X4 @ X2 ) ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ! [X3: $i,X4: $i] :
                                                                ( ( X3 = X4 )
                                                               => ( ( in @ X3 @ X1 )
                                                                  = ( in @ X4 @ X2 ) ) ) )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ( exu @ X1 )
                                                             => ! [X2: $i,X3: $i] :
                                                                  ( ( X1 @ X2 )
                                                                 => ( ( X1 @ X3 )
                                                                   => ( X2 = X3 ) ) ) )
                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                ( ! [X3: $i,X4: $i] :
                                                                    ( ( X3 = X4 )
                                                                   => ( ( X1 @ X3 )
                                                                      = ( X2 @ X4 ) ) )
                                                               => ( ( exu @ X1 )
                                                                  = ( exu @ X2 ) ) )
                                                           => ( ( emptyset = emptyset )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ! [X3: $i,X4: $i] :
                                                                        ( ( X3 = X4 )
                                                                       => ( ( setadjoin @ X1 @ X3 )
                                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ( ( powerset @ X1 )
                                                                        = ( powerset @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( ( setunion @ X1 )
                                                                          = ( setunion @ X2 ) ) )
                                                                   => ( ( omega = omega )
                                                                     => ( ! [X1: $i > $o] :
                                                                            ( ( exu @ X1 )
                                                                           => ! [X2: $i,X3: $i] :
                                                                                ( ( X1 @ X2 )
                                                                               => ( ( X1 @ X3 )
                                                                                 => ( X2 = X3 ) ) ) )
                                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                              ( ! [X3: $i,X4: $i] :
                                                                                  ( ( X3 = X4 )
                                                                                 => ( ( X1 @ X3 )
                                                                                    = ( X2 @ X4 ) ) )
                                                                             => ( ( exu @ X1 )
                                                                               => ( ( exu @ X2 )
                                                                                 => ( ( descr @ X1 )
                                                                                    = ( descr @ X2 ) ) ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                                    ( ! [X5: $i] :
                                                                                        ( ( in @ X5 @ X1 )
                                                                                       => ! [X6: $i] :
                                                                                            ( ( in @ X6 @ X2 )
                                                                                           => ( ( X5 = X6 )
                                                                                             => ( ( X3 @ X5 )
                                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                           => ( sP26
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ( subset @ X2 @ X1 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( X1 = X2 )
                                                                                     => ( subset @ X1 @ X2 ) )
                                                                                 => ( sP26
                                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( ( in @ X3 @ X1 )
                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                                 => ( X1 != X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                                     => ( X1 != X2 ) ) )
                                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( subset @ X1 @ X3 )
                                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                       => ( sP1
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                                 => ( X1 = X2 ) ) )
                                                                                                           => ( ! [X1: $i] :
                                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                                 => ( X1 = emptyset ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                                         => X4 )
                                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                                           => X4 )
                                                                                                                                         => X4 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                                               => ( in @ X3
                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                                               => ( subset @ X3
                                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h76,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( setunion @ X1 ) )
     => ! [X3: $o] :
          ( ! [X4: $i] :
              ( ( in @ X2 @ X4 )
             => ( ( in @ X4 @ X1 )
               => X3 ) )
         => X3 ) ),
    introduced(assumption,[]) ).

thf(h77,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ~ ! [X2: $i] :
                  ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                      = ( X3 = X2 ) ) )
       => ( ! [X1: $i] :
              ( ( nonempty @ X1 )
             => ~ ! [X2: $i] :
                    ~ ( in @ X2 @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
               => ( X1 = X2 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 != X2 )
                 => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ( X3 != X1 )
                         => ( X3 = X2 ) ) )
                   => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) )
                             => ( ( dsetconstr @ X1 @ X2 )
                               != emptyset ) )
                         => ( ! [X1: $i > $o,X2: $i] :
                                ( ( in @ X2 @ emptyset )
                               => ( X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) )
                                 => ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) )
                                   => ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) )
                                     => ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) )
                                       => ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) ) )
                                   => ( ! [X1: $o] :
                                          ( X1
                                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                     => ( ! [X1: $o] :
                                            ( X1
                                           => ( set2prop @ ( prop2set @ X1 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) )
                                             => ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ~ ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] :
                                                ( ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) )
                                               => ~ ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( X2 @ X3 ) ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ~ ! [X2: $i] :
                                                        ( ( X1 @ X2 )
                                                       => ~ ! [X3: $i] :
                                                              ( ( X1 @ X3 )
                                                             => ( X2 = X3 ) ) )
                                                 => ( exu @ X1 ) )
                                             => ( ! [X1: $i > $o] :
                                                    ( ~ ! [X2: $i] :
                                                          ~ ( X1 @ X2 )
                                                   => ( ! [X2: $i,X3: $i] :
                                                          ( ( X1 @ X2 )
                                                         => ( ( X1 @ X3 )
                                                           => ( X2 = X3 ) ) )
                                                     => ( exu @ X1 ) ) )
                                               => ( ! [X1: $i > $o] :
                                                      ( ~ ! [X2: $i] :
                                                            ~ ! [X3: $i] :
                                                                ( ( X1 @ X3 )
                                                                = ( X3 = X2 ) )
                                                     => ( exu @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( in @ X3 @ X1 )
                                                             => ( in @ X4 @ X2 ) ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ! [X3: $i,X4: $i] :
                                                              ( ( X3 = X4 )
                                                             => ( ( in @ X3 @ X1 )
                                                                = ( in @ X4 @ X2 ) ) ) )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ( exu @ X1 )
                                                           => ! [X2: $i,X3: $i] :
                                                                ( ( X1 @ X2 )
                                                               => ( ( X1 @ X3 )
                                                                 => ( X2 = X3 ) ) ) )
                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                              ( ! [X3: $i,X4: $i] :
                                                                  ( ( X3 = X4 )
                                                                 => ( ( X1 @ X3 )
                                                                    = ( X2 @ X4 ) ) )
                                                             => ( ( exu @ X1 )
                                                                = ( exu @ X2 ) ) )
                                                         => ( ( emptyset = emptyset )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( setadjoin @ X1 @ X3 )
                                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ( ( powerset @ X1 )
                                                                      = ( powerset @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ( ( setunion @ X1 )
                                                                        = ( setunion @ X2 ) ) )
                                                                 => ( ( omega = omega )
                                                                   => ( ! [X1: $i > $o] :
                                                                          ( ( exu @ X1 )
                                                                         => ! [X2: $i,X3: $i] :
                                                                              ( ( X1 @ X2 )
                                                                             => ( ( X1 @ X3 )
                                                                               => ( X2 = X3 ) ) ) )
                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                            ( ! [X3: $i,X4: $i] :
                                                                                ( ( X3 = X4 )
                                                                               => ( ( X1 @ X3 )
                                                                                  = ( X2 @ X4 ) ) )
                                                                           => ( ( exu @ X1 )
                                                                             => ( ( exu @ X2 )
                                                                               => ( ( descr @ X1 )
                                                                                  = ( descr @ X2 ) ) ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                                  ( ! [X5: $i] :
                                                                                      ( ( in @ X5 @ X1 )
                                                                                     => ! [X6: $i] :
                                                                                          ( ( in @ X6 @ X2 )
                                                                                         => ( ( X5 = X6 )
                                                                                           => ( ( X3 @ X5 )
                                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                         => ( sP26
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ( subset @ X2 @ X1 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( X1 = X2 )
                                                                                   => ( subset @ X1 @ X2 ) )
                                                                               => ( sP26
                                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( subset @ X1 @ X2 )
                                                                                         => ( ( in @ X3 @ X1 )
                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                                               => ( X1 != X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                                   => ( X1 != X2 ) ) )
                                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( subset @ X1 @ X3 )
                                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                     => ( sP1
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                                               => ( X1 = X2 ) ) )
                                                                                                         => ( ! [X1: $i] :
                                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                                               => ( X1 = emptyset ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                                       => X4 )
                                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                                         => X4 )
                                                                                                                                       => X4 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                                             => ( in @ X3
                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                                             => ( subset @ X3
                                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h78,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ X1 )
     => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) ),
    introduced(assumption,[]) ).

thf(h79,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) ) )
     => ( ! [X1: $i] :
            ( ( nonempty @ X1 )
           => ~ ! [X2: $i] :
                  ~ ( in @ X2 @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
             => ( X1 = X2 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 != X2 )
               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                     => ( ( X3 != X1 )
                       => ( X3 = X2 ) ) )
                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) )
                           => ( ( dsetconstr @ X1 @ X2 )
                             != emptyset ) )
                       => ( ! [X1: $i > $o,X2: $i] :
                              ( ( in @ X2 @ emptyset )
                             => ( X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) )
                                 => ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) )
                                   => ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) )
                                     => ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) ) )
                                 => ( ! [X1: $o] :
                                        ( X1
                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                   => ( ! [X1: $o] :
                                          ( X1
                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) )
                                           => ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ~ ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] :
                                              ( ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) )
                                             => ~ ! [X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( X2 @ X3 ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ~ ! [X2: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ~ ! [X3: $i] :
                                                            ( ( X1 @ X3 )
                                                           => ( X2 = X3 ) ) )
                                               => ( exu @ X1 ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ~ ! [X2: $i] :
                                                        ~ ( X1 @ X2 )
                                                 => ( ! [X2: $i,X3: $i] :
                                                        ( ( X1 @ X2 )
                                                       => ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) )
                                                   => ( exu @ X1 ) ) )
                                             => ( ! [X1: $i > $o] :
                                                    ( ~ ! [X2: $i] :
                                                          ~ ! [X3: $i] :
                                                              ( ( X1 @ X3 )
                                                              = ( X3 = X2 ) )
                                                   => ( exu @ X1 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ! [X3: $i,X4: $i] :
                                                          ( ( X3 = X4 )
                                                         => ( ( in @ X3 @ X1 )
                                                           => ( in @ X4 @ X2 ) ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( in @ X3 @ X1 )
                                                              = ( in @ X4 @ X2 ) ) ) )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ( exu @ X1 )
                                                         => ! [X2: $i,X3: $i] :
                                                              ( ( X1 @ X2 )
                                                             => ( ( X1 @ X3 )
                                                               => ( X2 = X3 ) ) ) )
                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                            ( ! [X3: $i,X4: $i] :
                                                                ( ( X3 = X4 )
                                                               => ( ( X1 @ X3 )
                                                                  = ( X2 @ X4 ) ) )
                                                           => ( ( exu @ X1 )
                                                              = ( exu @ X2 ) ) )
                                                       => ( ( emptyset = emptyset )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ! [X3: $i,X4: $i] :
                                                                    ( ( X3 = X4 )
                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ( ( powerset @ X1 )
                                                                    = ( powerset @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ( ( setunion @ X1 )
                                                                      = ( setunion @ X2 ) ) )
                                                               => ( ( omega = omega )
                                                                 => ( ! [X1: $i > $o] :
                                                                        ( ( exu @ X1 )
                                                                       => ! [X2: $i,X3: $i] :
                                                                            ( ( X1 @ X2 )
                                                                           => ( ( X1 @ X3 )
                                                                             => ( X2 = X3 ) ) ) )
                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                          ( ! [X3: $i,X4: $i] :
                                                                              ( ( X3 = X4 )
                                                                             => ( ( X1 @ X3 )
                                                                                = ( X2 @ X4 ) ) )
                                                                         => ( ( exu @ X1 )
                                                                           => ( ( exu @ X2 )
                                                                             => ( ( descr @ X1 )
                                                                                = ( descr @ X2 ) ) ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                ( ! [X5: $i] :
                                                                                    ( ( in @ X5 @ X1 )
                                                                                   => ! [X6: $i] :
                                                                                        ( ( in @ X6 @ X2 )
                                                                                       => ( ( X5 = X6 )
                                                                                         => ( ( X3 @ X5 )
                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                       => ( sP26
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ( subset @ X2 @ X1 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( X1 = X2 )
                                                                                 => ( subset @ X1 @ X2 ) )
                                                                             => ( sP26
                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X1 @ X2 )
                                                                                       => ( ( in @ X3 @ X1 )
                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( subset @ X1 @ X2 )
                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                             => ( X1 != X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                 => ( X1 != X2 ) ) )
                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                   => ( sP1
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                             => ( X1 = X2 ) ) )
                                                                                                       => ( ! [X1: $i] :
                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                             => ( X1 = emptyset ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                     => X4 )
                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                       => X4 )
                                                                                                                                     => X4 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                           => ( in @ X3
                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                           => ( subset @ X3
                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h80,assumption,
    ! [X1: $i > $o] :
      ( ( exu @ X1 )
     => ~ ! [X2: $i] :
            ~ ! [X3: $i] :
                ( ( X1 @ X3 )
                = ( X3 = X2 ) ) ),
    introduced(assumption,[]) ).

thf(h81,assumption,
    ~ ( ! [X1: $i] :
          ( ( nonempty @ X1 )
         => ~ ! [X2: $i] :
                ~ ( in @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
           => ( X1 = X2 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 != X2 )
             => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                 => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ( X3 != X1 )
                     => ( X3 = X2 ) ) )
               => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) )
                         => ( ( dsetconstr @ X1 @ X2 )
                           != emptyset ) )
                     => ( ! [X1: $i > $o,X2: $i] :
                            ( ( in @ X2 @ emptyset )
                           => ( X1 @ X2 ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) )
                             => ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) )
                               => ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) )
                                 => ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) )
                                   => ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) ) )
                               => ( ! [X1: $o] :
                                      ( X1
                                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                 => ( ! [X1: $o] :
                                        ( X1
                                       => ( set2prop @ ( prop2set @ X1 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) )
                                         => ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ~ ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] :
                                            ( ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) )
                                           => ~ ! [X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( X2 @ X3 ) ) )
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) )
                                             => ( exu @ X1 ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ~ ! [X2: $i] :
                                                      ~ ( X1 @ X2 )
                                               => ( ! [X2: $i,X3: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) )
                                                 => ( exu @ X1 ) ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ~ ! [X2: $i] :
                                                        ~ ! [X3: $i] :
                                                            ( ( X1 @ X3 )
                                                            = ( X3 = X2 ) )
                                                 => ( exu @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( in @ X3 @ X1 )
                                                         => ( in @ X4 @ X2 ) ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ! [X3: $i,X4: $i] :
                                                          ( ( X3 = X4 )
                                                         => ( ( in @ X3 @ X1 )
                                                            = ( in @ X4 @ X2 ) ) ) )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ( exu @ X1 )
                                                       => ! [X2: $i,X3: $i] :
                                                            ( ( X1 @ X2 )
                                                           => ( ( X1 @ X3 )
                                                             => ( X2 = X3 ) ) ) )
                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                          ( ! [X3: $i,X4: $i] :
                                                              ( ( X3 = X4 )
                                                             => ( ( X1 @ X3 )
                                                                = ( X2 @ X4 ) ) )
                                                         => ( ( exu @ X1 )
                                                            = ( exu @ X2 ) ) )
                                                     => ( ( emptyset = emptyset )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ! [X3: $i,X4: $i] :
                                                                  ( ( X3 = X4 )
                                                                 => ( ( setadjoin @ X1 @ X3 )
                                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ( ( powerset @ X1 )
                                                                  = ( powerset @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ( ( setunion @ X1 )
                                                                    = ( setunion @ X2 ) ) )
                                                             => ( ( omega = omega )
                                                               => ( ! [X1: $i > $o] :
                                                                      ( ( exu @ X1 )
                                                                     => ! [X2: $i,X3: $i] :
                                                                          ( ( X1 @ X2 )
                                                                         => ( ( X1 @ X3 )
                                                                           => ( X2 = X3 ) ) ) )
                                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                        ( ! [X3: $i,X4: $i] :
                                                                            ( ( X3 = X4 )
                                                                           => ( ( X1 @ X3 )
                                                                              = ( X2 @ X4 ) ) )
                                                                       => ( ( exu @ X1 )
                                                                         => ( ( exu @ X2 )
                                                                           => ( ( descr @ X1 )
                                                                              = ( descr @ X2 ) ) ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                                              ( ! [X5: $i] :
                                                                                  ( ( in @ X5 @ X1 )
                                                                                 => ! [X6: $i] :
                                                                                      ( ( in @ X6 @ X2 )
                                                                                     => ( ( X5 = X6 )
                                                                                       => ( ( X3 @ X5 )
                                                                                          = ( X4 @ X6 ) ) ) ) )
                                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                     => ( sP26
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ( subset @ X2 @ X1 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( X1 = X2 )
                                                                               => ( subset @ X1 @ X2 ) )
                                                                           => ( sP26
                                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( subset @ X1 @ X2 )
                                                                                     => ( ( in @ X3 @ X1 )
                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X1 @ X2 )
                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                                           => ( X1 != X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                                               => ( X1 != X2 ) ) )
                                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( subset @ X1 @ X3 )
                                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                 => ( sP1
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                                           => ( X1 = X2 ) ) )
                                                                                                     => ( ! [X1: $i] :
                                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                                           => ( X1 = emptyset ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( subset @ X2 @ X1 )
                                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                                   => X4 )
                                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                                     => X4 )
                                                                                                                                   => X4 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                                         => ( in @ X3
                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                                         => ( subset @ X3
                                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h82,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( X1 = X2 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 != X2 )
           => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
               => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ( X3 != X1 )
                   => ( X3 = X2 ) ) )
             => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                       => ( ( dsetconstr @ X1 @ X2 )
                         != emptyset ) )
                   => ( ! [X1: $i > $o,X2: $i] :
                          ( ( in @ X2 @ emptyset )
                         => ( X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) )
                             => ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) )
                               => ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) )
                                 => ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) ) )
                             => ( ! [X1: $o] :
                                    ( X1
                                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                               => ( ! [X1: $o] :
                                      ( X1
                                     => ( set2prop @ ( prop2set @ X1 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) )
                                       => ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ~ ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] :
                                          ( ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) )
                                         => ~ ! [X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( X2 @ X3 ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ~ ! [X2: $i] :
                                                  ( ( X1 @ X2 )
                                                 => ~ ! [X3: $i] :
                                                        ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) )
                                           => ( exu @ X1 ) )
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ~ ( X1 @ X2 )
                                             => ( ! [X2: $i,X3: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) )
                                               => ( exu @ X1 ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ~ ! [X2: $i] :
                                                      ~ ! [X3: $i] :
                                                          ( ( X1 @ X3 )
                                                          = ( X3 = X2 ) )
                                               => ( exu @ X1 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( in @ X3 @ X1 )
                                                       => ( in @ X4 @ X2 ) ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( in @ X3 @ X1 )
                                                          = ( in @ X4 @ X2 ) ) ) )
                                               => ( ! [X1: $i > $o] :
                                                      ( ( exu @ X1 )
                                                     => ! [X2: $i,X3: $i] :
                                                          ( ( X1 @ X2 )
                                                         => ( ( X1 @ X3 )
                                                           => ( X2 = X3 ) ) ) )
                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                        ( ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( X1 @ X3 )
                                                              = ( X2 @ X4 ) ) )
                                                       => ( ( exu @ X1 )
                                                          = ( exu @ X2 ) ) )
                                                   => ( ( emptyset = emptyset )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ! [X3: $i,X4: $i] :
                                                                ( ( X3 = X4 )
                                                               => ( ( setadjoin @ X1 @ X3 )
                                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ( ( powerset @ X1 )
                                                                = ( powerset @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ( ( setunion @ X1 )
                                                                  = ( setunion @ X2 ) ) )
                                                           => ( ( omega = omega )
                                                             => ( ! [X1: $i > $o] :
                                                                    ( ( exu @ X1 )
                                                                   => ! [X2: $i,X3: $i] :
                                                                        ( ( X1 @ X2 )
                                                                       => ( ( X1 @ X3 )
                                                                         => ( X2 = X3 ) ) ) )
                                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                      ( ! [X3: $i,X4: $i] :
                                                                          ( ( X3 = X4 )
                                                                         => ( ( X1 @ X3 )
                                                                            = ( X2 @ X4 ) ) )
                                                                     => ( ( exu @ X1 )
                                                                       => ( ( exu @ X2 )
                                                                         => ( ( descr @ X1 )
                                                                            = ( descr @ X2 ) ) ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                                            ( ! [X5: $i] :
                                                                                ( ( in @ X5 @ X1 )
                                                                               => ! [X6: $i] :
                                                                                    ( ( in @ X6 @ X2 )
                                                                                   => ( ( X5 = X6 )
                                                                                     => ( ( X3 @ X5 )
                                                                                        = ( X4 @ X6 ) ) ) ) )
                                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                   => ( sP26
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ( subset @ X2 @ X1 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( X1 = X2 )
                                                                             => ( subset @ X1 @ X2 ) )
                                                                         => ( sP26
                                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( subset @ X1 @ X2 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( subset @ X1 @ X2 )
                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                                         => ( X1 != X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                             => ( X1 != X2 ) ) )
                                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X1 @ X2 )
                                                                                               => ( ( subset @ X2 @ X3 )
                                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( subset @ X1 @ X3 )
                                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                               => ( sP1
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                                         => ( X1 = X2 ) ) )
                                                                                                   => ( ! [X1: $i] :
                                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                                         => ( X1 = emptyset ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( subset @ X2 @ X1 )
                                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                                 => X4 )
                                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                                   => X4 )
                                                                                                                                 => X4 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                                       => ( in @ X3
                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                                       => ( subset @ X3
                                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h83,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
     => ( X1 = X2 ) ),
    introduced(assumption,[]) ).

thf(h84,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 != X2 )
         => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
             => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ( X3 != X1 )
                 => ( X3 = X2 ) ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) )
                     => ( ( dsetconstr @ X1 @ X2 )
                       != emptyset ) )
                 => ( ! [X1: $i > $o,X2: $i] :
                        ( ( in @ X2 @ emptyset )
                       => ( X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) )
                         => ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) )
                           => ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) )
                             => ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) ) )
                           => ( ! [X1: $o] :
                                  ( X1
                                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                             => ( ! [X1: $o] :
                                    ( X1
                                   => ( set2prop @ ( prop2set @ X1 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) )
                                     => ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ~ ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] :
                                        ( ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) )
                                       => ~ ! [X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( X2 @ X3 ) ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ( ( X1 @ X2 )
                                               => ~ ! [X3: $i] :
                                                      ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) )
                                         => ( exu @ X1 ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ~ ! [X2: $i] :
                                                  ~ ( X1 @ X2 )
                                           => ( ! [X2: $i,X3: $i] :
                                                  ( ( X1 @ X2 )
                                                 => ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) )
                                             => ( exu @ X1 ) ) )
                                       => ( ! [X1: $i > $o] :
                                              ( ~ ! [X2: $i] :
                                                    ~ ! [X3: $i] :
                                                        ( ( X1 @ X3 )
                                                        = ( X3 = X2 ) )
                                             => ( exu @ X1 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( in @ X3 @ X1 )
                                                     => ( in @ X4 @ X2 ) ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( in @ X3 @ X1 )
                                                        = ( in @ X4 @ X2 ) ) ) )
                                             => ( ! [X1: $i > $o] :
                                                    ( ( exu @ X1 )
                                                   => ! [X2: $i,X3: $i] :
                                                        ( ( X1 @ X2 )
                                                       => ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) ) )
                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                      ( ! [X3: $i,X4: $i] :
                                                          ( ( X3 = X4 )
                                                         => ( ( X1 @ X3 )
                                                            = ( X2 @ X4 ) ) )
                                                     => ( ( exu @ X1 )
                                                        = ( exu @ X2 ) ) )
                                                 => ( ( emptyset = emptyset )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ! [X3: $i,X4: $i] :
                                                              ( ( X3 = X4 )
                                                             => ( ( setadjoin @ X1 @ X3 )
                                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( ( powerset @ X1 )
                                                              = ( powerset @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ( ( setunion @ X1 )
                                                                = ( setunion @ X2 ) ) )
                                                         => ( ( omega = omega )
                                                           => ( ! [X1: $i > $o] :
                                                                  ( ( exu @ X1 )
                                                                 => ! [X2: $i,X3: $i] :
                                                                      ( ( X1 @ X2 )
                                                                     => ( ( X1 @ X3 )
                                                                       => ( X2 = X3 ) ) ) )
                                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                    ( ! [X3: $i,X4: $i] :
                                                                        ( ( X3 = X4 )
                                                                       => ( ( X1 @ X3 )
                                                                          = ( X2 @ X4 ) ) )
                                                                   => ( ( exu @ X1 )
                                                                     => ( ( exu @ X2 )
                                                                       => ( ( descr @ X1 )
                                                                          = ( descr @ X2 ) ) ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                                          ( ! [X5: $i] :
                                                                              ( ( in @ X5 @ X1 )
                                                                             => ! [X6: $i] :
                                                                                  ( ( in @ X6 @ X2 )
                                                                                 => ( ( X5 = X6 )
                                                                                   => ( ( X3 @ X5 )
                                                                                      = ( X4 @ X6 ) ) ) ) )
                                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                 => ( sP26
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( subset @ X2 @ X1 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( X1 = X2 )
                                                                           => ( subset @ X1 @ X2 ) )
                                                                       => ( sP26
                                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( ( in @ X3 @ X1 )
                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( subset @ X1 @ X2 )
                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                                       => ( X1 != X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                           => ( X1 != X2 ) ) )
                                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( ( subset @ X2 @ X3 )
                                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( subset @ X1 @ X3 )
                                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                             => ( sP1
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                                       => ( X1 = X2 ) ) )
                                                                                                 => ( ! [X1: $i] :
                                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                                       => ( X1 = emptyset ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( subset @ X2 @ X1 )
                                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                ( ( subset @ X1 @ X2 )
                                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                                               => X4 )
                                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                                 => X4 )
                                                                                                                               => X4 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                                     => ( in @ X3
                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                                     => ( subset @ X3
                                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h85,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 != X2 )
     => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h86,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
           => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ( X3 != X1 )
               => ( X3 = X2 ) ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                   => ( ( dsetconstr @ X1 @ X2 )
                     != emptyset ) )
               => ( ! [X1: $i > $o,X2: $i] :
                      ( ( in @ X2 @ emptyset )
                     => ( X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                         => ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) )
                           => ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) )
                             => ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) ) )
                         => ( ! [X1: $o] :
                                ( X1
                               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                           => ( ! [X1: $o] :
                                  ( X1
                                 => ( set2prop @ ( prop2set @ X1 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) )
                                   => ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ~ ( X2 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] :
                                      ( ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) )
                                     => ~ ! [X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( X2 @ X3 ) ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ( ( X1 @ X2 )
                                             => ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) )
                                       => ( exu @ X1 ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ~ ( X1 @ X2 )
                                         => ( ! [X2: $i,X3: $i] :
                                                ( ( X1 @ X2 )
                                               => ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) )
                                           => ( exu @ X1 ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ~ ! [X2: $i] :
                                                  ~ ! [X3: $i] :
                                                      ( ( X1 @ X3 )
                                                      = ( X3 = X2 ) )
                                           => ( exu @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( in @ X3 @ X1 )
                                                   => ( in @ X4 @ X2 ) ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( in @ X3 @ X1 )
                                                      = ( in @ X4 @ X2 ) ) ) )
                                           => ( ! [X1: $i > $o] :
                                                  ( ( exu @ X1 )
                                                 => ! [X2: $i,X3: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) ) )
                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                    ( ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( X1 @ X3 )
                                                          = ( X2 @ X4 ) ) )
                                                   => ( ( exu @ X1 )
                                                      = ( exu @ X2 ) ) )
                                               => ( ( emptyset = emptyset )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( setadjoin @ X1 @ X3 )
                                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( ( powerset @ X1 )
                                                            = ( powerset @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( ( setunion @ X1 )
                                                              = ( setunion @ X2 ) ) )
                                                       => ( ( omega = omega )
                                                         => ( ! [X1: $i > $o] :
                                                                ( ( exu @ X1 )
                                                               => ! [X2: $i,X3: $i] :
                                                                    ( ( X1 @ X2 )
                                                                   => ( ( X1 @ X3 )
                                                                     => ( X2 = X3 ) ) ) )
                                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                  ( ! [X3: $i,X4: $i] :
                                                                      ( ( X3 = X4 )
                                                                     => ( ( X1 @ X3 )
                                                                        = ( X2 @ X4 ) ) )
                                                                 => ( ( exu @ X1 )
                                                                   => ( ( exu @ X2 )
                                                                     => ( ( descr @ X1 )
                                                                        = ( descr @ X2 ) ) ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                                        ( ! [X5: $i] :
                                                                            ( ( in @ X5 @ X1 )
                                                                           => ! [X6: $i] :
                                                                                ( ( in @ X6 @ X2 )
                                                                               => ( ( X5 = X6 )
                                                                                 => ( ( X3 @ X5 )
                                                                                    = ( X4 @ X6 ) ) ) ) )
                                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                               => ( sP26
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( subset @ X2 @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( X1 = X2 )
                                                                         => ( subset @ X1 @ X2 ) )
                                                                     => ( sP26
                                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( ( in @ X3 @ X1 )
                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                                     => ( X1 != X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                                         => ( X1 != X2 ) ) )
                                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( ( subset @ X2 @ X3 )
                                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X1 @ X3 )
                                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                           => ( sP1
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                                     => ( X1 = X2 ) ) )
                                                                                               => ( ! [X1: $i] :
                                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                                     => ( X1 = emptyset ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( subset @ X2 @ X1 )
                                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                              ( ( subset @ X1 @ X2 )
                                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                                             => X4 )
                                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                                               => X4 )
                                                                                                                             => X4 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                                   => ( in @ X3
                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                                   => ( subset @ X3
                                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h87,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h88,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
         => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ( X3 != X1 )
             => ( X3 = X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                 => ( ( dsetconstr @ X1 @ X2 )
                   != emptyset ) )
             => ( ! [X1: $i > $o,X2: $i] :
                    ( ( in @ X2 @ emptyset )
                   => ( X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) )
                     => ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) )
                       => ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                         => ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) ) )
                       => ( ! [X1: $o] :
                              ( X1
                             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                         => ( ! [X1: $o] :
                                ( X1
                               => ( set2prop @ ( prop2set @ X1 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) )
                                 => ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ~ ( X2 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] :
                                    ( ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) )
                                   => ~ ! [X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( X2 @ X3 ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) )
                                     => ( exu @ X1 ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ~ ( X1 @ X2 )
                                       => ( ! [X2: $i,X3: $i] :
                                              ( ( X1 @ X2 )
                                             => ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) )
                                         => ( exu @ X1 ) ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ~ ! [X2: $i] :
                                                ~ ! [X3: $i] :
                                                    ( ( X1 @ X3 )
                                                    = ( X3 = X2 ) )
                                         => ( exu @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( in @ X3 @ X1 )
                                                 => ( in @ X4 @ X2 ) ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( in @ X3 @ X1 )
                                                    = ( in @ X4 @ X2 ) ) ) )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ! [X2: $i,X3: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) ) )
                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                  ( ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( X1 @ X3 )
                                                        = ( X2 @ X4 ) ) )
                                                 => ( ( exu @ X1 )
                                                    = ( exu @ X2 ) ) )
                                             => ( ( emptyset = emptyset )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ! [X3: $i,X4: $i] :
                                                          ( ( X3 = X4 )
                                                         => ( ( setadjoin @ X1 @ X3 )
                                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( ( powerset @ X1 )
                                                          = ( powerset @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( ( setunion @ X1 )
                                                            = ( setunion @ X2 ) ) )
                                                     => ( ( omega = omega )
                                                       => ( ! [X1: $i > $o] :
                                                              ( ( exu @ X1 )
                                                             => ! [X2: $i,X3: $i] :
                                                                  ( ( X1 @ X2 )
                                                                 => ( ( X1 @ X3 )
                                                                   => ( X2 = X3 ) ) ) )
                                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                ( ! [X3: $i,X4: $i] :
                                                                    ( ( X3 = X4 )
                                                                   => ( ( X1 @ X3 )
                                                                      = ( X2 @ X4 ) ) )
                                                               => ( ( exu @ X1 )
                                                                 => ( ( exu @ X2 )
                                                                   => ( ( descr @ X1 )
                                                                      = ( descr @ X2 ) ) ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                                      ( ! [X5: $i] :
                                                                          ( ( in @ X5 @ X1 )
                                                                         => ! [X6: $i] :
                                                                              ( ( in @ X6 @ X2 )
                                                                             => ( ( X5 = X6 )
                                                                               => ( ( X3 @ X5 )
                                                                                  = ( X4 @ X6 ) ) ) ) )
                                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                             => ( sP26
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ( subset @ X2 @ X1 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( X1 = X2 )
                                                                       => ( subset @ X1 @ X2 ) )
                                                                   => ( sP26
                                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( subset @ X1 @ X2 )
                                                                             => ( ( in @ X3 @ X1 )
                                                                               => ( in @ X3 @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                                   => ( X1 != X2 ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                                       => ( X1 != X2 ) ) )
                                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( subset @ X1 @ X2 )
                                                                                         => ( ( subset @ X2 @ X3 )
                                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( subset @ X1 @ X3 )
                                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                         => ( sP1
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                                   => ( X1 = X2 ) ) )
                                                                                             => ( ! [X1: $i] :
                                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                                   => ( X1 = emptyset ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( subset @ X2 @ X1 )
                                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                                           => X4 )
                                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                                             => X4 )
                                                                                                                           => X4 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                                 => ( in @ X3
                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                                 => ( subset @ X3
                                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h89,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
     => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h90,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ( X3 != X1 )
           => ( X3 = X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) )
               => ( ( dsetconstr @ X1 @ X2 )
                 != emptyset ) )
           => ( ! [X1: $i > $o,X2: $i] :
                  ( ( in @ X2 @ emptyset )
                 => ( X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) )
                   => ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                     => ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) )
                       => ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) )
                         => ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) ) )
                     => ( ! [X1: $o] :
                            ( X1
                           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                       => ( ! [X1: $o] :
                              ( X1
                             => ( set2prop @ ( prop2set @ X1 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) )
                               => ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ~ ( X2 @ X3 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] :
                                  ( ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) )
                                 => ~ ! [X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( X2 @ X3 ) ) )
                             => ( ! [X1: $i > $o] :
                                    ( ~ ! [X2: $i] :
                                          ( ( X1 @ X2 )
                                         => ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) )
                                   => ( exu @ X1 ) )
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ~ ( X1 @ X2 )
                                     => ( ! [X2: $i,X3: $i] :
                                            ( ( X1 @ X2 )
                                           => ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) )
                                       => ( exu @ X1 ) ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ~ ! [X2: $i] :
                                              ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                  = ( X3 = X2 ) )
                                       => ( exu @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( in @ X3 @ X1 )
                                               => ( in @ X4 @ X2 ) ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( in @ X3 @ X1 )
                                                  = ( in @ X4 @ X2 ) ) ) )
                                       => ( ! [X1: $i > $o] :
                                              ( ( exu @ X1 )
                                             => ! [X2: $i,X3: $i] :
                                                  ( ( X1 @ X2 )
                                                 => ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) ) )
                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                ( ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( X1 @ X3 )
                                                      = ( X2 @ X4 ) ) )
                                               => ( ( exu @ X1 )
                                                  = ( exu @ X2 ) ) )
                                           => ( ( emptyset = emptyset )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( setadjoin @ X1 @ X3 )
                                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ( ( powerset @ X1 )
                                                        = ( powerset @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( ( setunion @ X1 )
                                                          = ( setunion @ X2 ) ) )
                                                   => ( ( omega = omega )
                                                     => ( ! [X1: $i > $o] :
                                                            ( ( exu @ X1 )
                                                           => ! [X2: $i,X3: $i] :
                                                                ( ( X1 @ X2 )
                                                               => ( ( X1 @ X3 )
                                                                 => ( X2 = X3 ) ) ) )
                                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                                              ( ! [X3: $i,X4: $i] :
                                                                  ( ( X3 = X4 )
                                                                 => ( ( X1 @ X3 )
                                                                    = ( X2 @ X4 ) ) )
                                                             => ( ( exu @ X1 )
                                                               => ( ( exu @ X2 )
                                                                 => ( ( descr @ X1 )
                                                                    = ( descr @ X2 ) ) ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                                    ( ! [X5: $i] :
                                                                        ( ( in @ X5 @ X1 )
                                                                       => ! [X6: $i] :
                                                                            ( ( in @ X6 @ X2 )
                                                                           => ( ( X5 = X6 )
                                                                             => ( ( X3 @ X5 )
                                                                                = ( X4 @ X6 ) ) ) ) )
                                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                           => ( sP26
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ( subset @ X2 @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( X1 = X2 )
                                                                     => ( subset @ X1 @ X2 ) )
                                                                 => ( sP26
                                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( subset @ X1 @ X2 )
                                                                           => ( ( in @ X3 @ X1 )
                                                                             => ( in @ X3 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( subset @ X1 @ X2 )
                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                                 => ( X1 != X2 ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                                     => ( X1 != X2 ) ) )
                                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X1 @ X2 )
                                                                                       => ( ( subset @ X2 @ X3 )
                                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X1 @ X3 )
                                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                       => ( sP1
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( subset @ X1 @ X2 )
                                                                                               => ( ( subset @ X2 @ X1 )
                                                                                                 => ( X1 = X2 ) ) )
                                                                                           => ( ! [X1: $i] :
                                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                                 => ( X1 = emptyset ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( subset @ X2 @ X1 )
                                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                                         => X4 )
                                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                                           => X4 )
                                                                                                                         => X4 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                                               => ( in @ X3
                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                                               => ( subset @ X3
                                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h91,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ( X3 != X1 )
       => ( X3 = X2 ) ) ),
    introduced(assumption,[]) ).

thf(h92,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
             => ( ( dsetconstr @ X1 @ X2 )
               != emptyset ) )
         => ( ! [X1: $i > $o,X2: $i] :
                ( ( in @ X2 @ emptyset )
               => ( X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                   => ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                     => ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) ) )
                   => ( ! [X1: $o] :
                          ( X1
                         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                     => ( ! [X1: $o] :
                            ( X1
                           => ( set2prop @ ( prop2set @ X1 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) )
                             => ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ~ ( X2 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] :
                                ( ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( X2 @ X3 ) ) )
                           => ( ! [X1: $i > $o] :
                                  ( ~ ! [X2: $i] :
                                        ( ( X1 @ X2 )
                                       => ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) )
                                 => ( exu @ X1 ) )
                             => ( ! [X1: $i > $o] :
                                    ( ~ ! [X2: $i] :
                                          ~ ( X1 @ X2 )
                                   => ( ! [X2: $i,X3: $i] :
                                          ( ( X1 @ X2 )
                                         => ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) )
                                     => ( exu @ X1 ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ~ ! [X2: $i] :
                                            ~ ! [X3: $i] :
                                                ( ( X1 @ X3 )
                                                = ( X3 = X2 ) )
                                     => ( exu @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( in @ X3 @ X1 )
                                             => ( in @ X4 @ X2 ) ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( in @ X3 @ X1 )
                                                = ( in @ X4 @ X2 ) ) ) )
                                     => ( ! [X1: $i > $o] :
                                            ( ( exu @ X1 )
                                           => ! [X2: $i,X3: $i] :
                                                ( ( X1 @ X2 )
                                               => ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                              ( ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( X1 @ X3 )
                                                    = ( X2 @ X4 ) ) )
                                             => ( ( exu @ X1 )
                                                = ( exu @ X2 ) ) )
                                         => ( ( emptyset = emptyset )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( setadjoin @ X1 @ X3 )
                                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ( ( powerset @ X1 )
                                                      = ( powerset @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ( ( setunion @ X1 )
                                                        = ( setunion @ X2 ) ) )
                                                 => ( ( omega = omega )
                                                   => ( ! [X1: $i > $o] :
                                                          ( ( exu @ X1 )
                                                         => ! [X2: $i,X3: $i] :
                                                              ( ( X1 @ X2 )
                                                             => ( ( X1 @ X3 )
                                                               => ( X2 = X3 ) ) ) )
                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                            ( ! [X3: $i,X4: $i] :
                                                                ( ( X3 = X4 )
                                                               => ( ( X1 @ X3 )
                                                                  = ( X2 @ X4 ) ) )
                                                           => ( ( exu @ X1 )
                                                             => ( ( exu @ X2 )
                                                               => ( ( descr @ X1 )
                                                                  = ( descr @ X2 ) ) ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                                  ( ! [X5: $i] :
                                                                      ( ( in @ X5 @ X1 )
                                                                     => ! [X6: $i] :
                                                                          ( ( in @ X6 @ X2 )
                                                                         => ( ( X5 = X6 )
                                                                           => ( ( X3 @ X5 )
                                                                              = ( X4 @ X6 ) ) ) ) )
                                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                         => ( sP26
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ( subset @ X2 @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( X1 = X2 )
                                                                   => ( subset @ X1 @ X2 ) )
                                                               => ( sP26
                                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( subset @ X1 @ X2 )
                                                                         => ( ( in @ X3 @ X1 )
                                                                           => ( in @ X3 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( subset @ X1 @ X2 )
                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ~ ( subset @ X1 @ X2 )
                                                                               => ( X1 != X2 ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                                   => ( X1 != X2 ) ) )
                                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( subset @ X1 @ X2 )
                                                                                     => ( ( subset @ X2 @ X3 )
                                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( subset @ X1 @ X3 )
                                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                     => ( sP1
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( ( subset @ X2 @ X1 )
                                                                                               => ( X1 = X2 ) ) )
                                                                                         => ( ! [X1: $i] :
                                                                                                ( ( subset @ X1 @ emptyset )
                                                                                               => ( X1 = emptyset ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( subset @ X2 @ X1 )
                                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                   => ( subset @ X2 @ X1 ) )
                                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                                       => X4 )
                                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                                         => X4 )
                                                                                                                       => X4 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                                             => ( in @ X3
                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                                             => ( subset @ X3
                                                                                                                                @ ( dsetconstr @ X1
                                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h93,assumption,
    ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h94,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
           => ( ( dsetconstr @ X1 @ X2 )
             != emptyset ) )
       => ( ! [X1: $i > $o,X2: $i] :
              ( ( in @ X2 @ emptyset )
             => ( X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) )
                 => ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                   => ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) )
                     => ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) ) )
                 => ( ! [X1: $o] :
                        ( X1
                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                   => ( ! [X1: $o] :
                          ( X1
                         => ( set2prop @ ( prop2set @ X1 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) )
                           => ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ~ ( X2 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] :
                              ( ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) )
                             => ~ ! [X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( X2 @ X3 ) ) )
                         => ( ! [X1: $i > $o] :
                                ( ~ ! [X2: $i] :
                                      ( ( X1 @ X2 )
                                     => ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) )
                               => ( exu @ X1 ) )
                           => ( ! [X1: $i > $o] :
                                  ( ~ ! [X2: $i] :
                                        ~ ( X1 @ X2 )
                                 => ( ! [X2: $i,X3: $i] :
                                        ( ( X1 @ X2 )
                                       => ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                                   => ( exu @ X1 ) ) )
                             => ( ! [X1: $i > $o] :
                                    ( ~ ! [X2: $i] :
                                          ~ ! [X3: $i] :
                                              ( ( X1 @ X3 )
                                              = ( X3 = X2 ) )
                                   => ( exu @ X1 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ! [X3: $i,X4: $i] :
                                          ( ( X3 = X4 )
                                         => ( ( in @ X3 @ X1 )
                                           => ( in @ X4 @ X2 ) ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( in @ X3 @ X1 )
                                              = ( in @ X4 @ X2 ) ) ) )
                                   => ( ! [X1: $i > $o] :
                                          ( ( exu @ X1 )
                                         => ! [X2: $i,X3: $i] :
                                              ( ( X1 @ X2 )
                                             => ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) ) )
                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                            ( ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( X1 @ X3 )
                                                  = ( X2 @ X4 ) ) )
                                           => ( ( exu @ X1 )
                                              = ( exu @ X2 ) ) )
                                       => ( ( emptyset = emptyset )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( setadjoin @ X1 @ X3 )
                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ( ( powerset @ X1 )
                                                    = ( powerset @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ( ( setunion @ X1 )
                                                      = ( setunion @ X2 ) ) )
                                               => ( ( omega = omega )
                                                 => ( ! [X1: $i > $o] :
                                                        ( ( exu @ X1 )
                                                       => ! [X2: $i,X3: $i] :
                                                            ( ( X1 @ X2 )
                                                           => ( ( X1 @ X3 )
                                                             => ( X2 = X3 ) ) ) )
                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                          ( ! [X3: $i,X4: $i] :
                                                              ( ( X3 = X4 )
                                                             => ( ( X1 @ X3 )
                                                                = ( X2 @ X4 ) ) )
                                                         => ( ( exu @ X1 )
                                                           => ( ( exu @ X2 )
                                                             => ( ( descr @ X1 )
                                                                = ( descr @ X2 ) ) ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                ( ! [X5: $i] :
                                                                    ( ( in @ X5 @ X1 )
                                                                   => ! [X6: $i] :
                                                                        ( ( in @ X6 @ X2 )
                                                                       => ( ( X5 = X6 )
                                                                         => ( ( X3 @ X5 )
                                                                            = ( X4 @ X6 ) ) ) ) )
                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                       => ( sP26
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ( subset @ X2 @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( X1 = X2 )
                                                                 => ( subset @ X1 @ X2 ) )
                                                             => ( sP26
                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( subset @ X1 @ X2 )
                                                                       => ( ( in @ X3 @ X1 )
                                                                         => ( in @ X3 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( subset @ X1 @ X2 )
                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                             => ( X1 != X2 ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                 => ( X1 != X2 ) ) )
                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( subset @ X1 @ X2 )
                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X1 @ X3 )
                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                   => ( sP1
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                             => ( X1 = X2 ) ) )
                                                                                       => ( ! [X1: $i] :
                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                             => ( X1 = emptyset ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( subset @ X2 @ X1 )
                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                     => X4 )
                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                       => X4 )
                                                                                                                     => X4 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                           => ( in @ X3
                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                           => ( subset @ X3
                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h95,assumption,
    ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) ),
    introduced(assumption,[]) ).

thf(h96,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
         => ( ( dsetconstr @ X1 @ X2 )
           != emptyset ) )
     => ( ! [X1: $i > $o,X2: $i] :
            ( ( in @ X2 @ emptyset )
           => ( X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) )
             => ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
               => ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) )
                 => ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) )
                   => ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) ) )
               => ( ! [X1: $o] :
                      ( X1
                     => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                 => ( ! [X1: $o] :
                        ( X1
                       => ( set2prop @ ( prop2set @ X1 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) )
                         => ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ~ ( X2 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] :
                            ( ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) )
                           => ~ ! [X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( X2 @ X3 ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ~ ! [X2: $i] :
                                    ( ( X1 @ X2 )
                                   => ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) )
                             => ( exu @ X1 ) )
                         => ( ! [X1: $i > $o] :
                                ( ~ ! [X2: $i] :
                                      ~ ( X1 @ X2 )
                               => ( ! [X2: $i,X3: $i] :
                                      ( ( X1 @ X2 )
                                     => ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) )
                                 => ( exu @ X1 ) ) )
                           => ( ! [X1: $i > $o] :
                                  ( ~ ! [X2: $i] :
                                        ~ ! [X3: $i] :
                                            ( ( X1 @ X3 )
                                            = ( X3 = X2 ) )
                                 => ( exu @ X1 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ! [X3: $i,X4: $i] :
                                        ( ( X3 = X4 )
                                       => ( ( in @ X3 @ X1 )
                                         => ( in @ X4 @ X2 ) ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ! [X3: $i,X4: $i] :
                                          ( ( X3 = X4 )
                                         => ( ( in @ X3 @ X1 )
                                            = ( in @ X4 @ X2 ) ) ) )
                                 => ( ! [X1: $i > $o] :
                                        ( ( exu @ X1 )
                                       => ! [X2: $i,X3: $i] :
                                            ( ( X1 @ X2 )
                                           => ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) ) )
                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                          ( ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( X1 @ X3 )
                                                = ( X2 @ X4 ) ) )
                                         => ( ( exu @ X1 )
                                            = ( exu @ X2 ) ) )
                                     => ( ( emptyset = emptyset )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( setadjoin @ X1 @ X3 )
                                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ( ( powerset @ X1 )
                                                  = ( powerset @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ( ( setunion @ X1 )
                                                    = ( setunion @ X2 ) ) )
                                             => ( ( omega = omega )
                                               => ( ! [X1: $i > $o] :
                                                      ( ( exu @ X1 )
                                                     => ! [X2: $i,X3: $i] :
                                                          ( ( X1 @ X2 )
                                                         => ( ( X1 @ X3 )
                                                           => ( X2 = X3 ) ) ) )
                                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                                        ( ! [X3: $i,X4: $i] :
                                                            ( ( X3 = X4 )
                                                           => ( ( X1 @ X3 )
                                                              = ( X2 @ X4 ) ) )
                                                       => ( ( exu @ X1 )
                                                         => ( ( exu @ X2 )
                                                           => ( ( descr @ X1 )
                                                              = ( descr @ X2 ) ) ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ! [X3: $i > $o,X4: $i > $o] :
                                                              ( ! [X5: $i] :
                                                                  ( ( in @ X5 @ X1 )
                                                                 => ! [X6: $i] :
                                                                      ( ( in @ X6 @ X2 )
                                                                     => ( ( X5 = X6 )
                                                                       => ( ( X3 @ X5 )
                                                                          = ( X4 @ X6 ) ) ) ) )
                                                             => ( ( dsetconstr @ X1 @ X3 )
                                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                     => ( sP26
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ( subset @ X2 @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( X1 = X2 )
                                                               => ( subset @ X1 @ X2 ) )
                                                           => ( sP26
                                                             => ( ( !! @ ( subset @ emptyset ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( subset @ X1 @ X2 )
                                                                     => ( ( in @ X3 @ X1 )
                                                                       => ( in @ X3 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( subset @ X1 @ X2 )
                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ~ ( subset @ X1 @ X2 )
                                                                           => ( X1 != X2 ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( ~ ( in @ X3 @ X2 )
                                                                               => ( X1 != X2 ) ) )
                                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( ( subset @ X2 @ X3 )
                                                                                   => ( subset @ X1 @ X3 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( subset @ X1 @ X3 )
                                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                 => ( sP1
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( subset @ X1 @ X2 )
                                                                                         => ( ( subset @ X2 @ X1 )
                                                                                           => ( X1 = X2 ) ) )
                                                                                     => ( ! [X1: $i] :
                                                                                            ( ( subset @ X1 @ emptyset )
                                                                                           => ( X1 = emptyset ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( subset @ X2 @ X1 )
                                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X2 )
                                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                                   => X4 )
                                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                                     => X4 )
                                                                                                                   => X4 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                                         => ( in @ X3
                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                                         => ( subset @ X3
                                                                                                                            @ ( dsetconstr @ X1
                                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h97,assumption,
    ! [X1: $i,X2: $i > $o] :
      ( ~ ! [X3: $i] :
            ( ( in @ X3 @ X1 )
           => ~ ( X2 @ X3 ) )
     => ( ( dsetconstr @ X1 @ X2 )
       != emptyset ) ),
    introduced(assumption,[]) ).

thf(h98,assumption,
    ~ ( ! [X1: $i > $o,X2: $i] :
          ( ( in @ X2 @ emptyset )
         => ( X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
             => ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
               => ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) ) )
             => ( ! [X1: $o] :
                    ( X1
                   => ( in @ emptyset @ ( prop2set @ X1 ) ) )
               => ( ! [X1: $o] :
                      ( X1
                     => ( set2prop @ ( prop2set @ X1 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) )
                       => ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ~ ( X2 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] :
                          ( ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) )
                         => ~ ! [X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( X2 @ X3 ) ) )
                     => ( ! [X1: $i > $o] :
                            ( ~ ! [X2: $i] :
                                  ( ( X1 @ X2 )
                                 => ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) )
                           => ( exu @ X1 ) )
                       => ( ! [X1: $i > $o] :
                              ( ~ ! [X2: $i] :
                                    ~ ( X1 @ X2 )
                             => ( ! [X2: $i,X3: $i] :
                                    ( ( X1 @ X2 )
                                   => ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) )
                               => ( exu @ X1 ) ) )
                         => ( ! [X1: $i > $o] :
                                ( ~ ! [X2: $i] :
                                      ~ ! [X3: $i] :
                                          ( ( X1 @ X3 )
                                          = ( X3 = X2 ) )
                               => ( exu @ X1 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ! [X3: $i,X4: $i] :
                                      ( ( X3 = X4 )
                                     => ( ( in @ X3 @ X1 )
                                       => ( in @ X4 @ X2 ) ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ! [X3: $i,X4: $i] :
                                        ( ( X3 = X4 )
                                       => ( ( in @ X3 @ X1 )
                                          = ( in @ X4 @ X2 ) ) ) )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ! [X2: $i,X3: $i] :
                                          ( ( X1 @ X2 )
                                         => ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) ) )
                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                        ( ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( X1 @ X3 )
                                              = ( X2 @ X4 ) ) )
                                       => ( ( exu @ X1 )
                                          = ( exu @ X2 ) ) )
                                   => ( ( emptyset = emptyset )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( setadjoin @ X1 @ X3 )
                                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ( ( powerset @ X1 )
                                                = ( powerset @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ( ( setunion @ X1 )
                                                  = ( setunion @ X2 ) ) )
                                           => ( ( omega = omega )
                                             => ( ! [X1: $i > $o] :
                                                    ( ( exu @ X1 )
                                                   => ! [X2: $i,X3: $i] :
                                                        ( ( X1 @ X2 )
                                                       => ( ( X1 @ X3 )
                                                         => ( X2 = X3 ) ) ) )
                                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                                      ( ! [X3: $i,X4: $i] :
                                                          ( ( X3 = X4 )
                                                         => ( ( X1 @ X3 )
                                                            = ( X2 @ X4 ) ) )
                                                     => ( ( exu @ X1 )
                                                       => ( ( exu @ X2 )
                                                         => ( ( descr @ X1 )
                                                            = ( descr @ X2 ) ) ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ! [X3: $i > $o,X4: $i > $o] :
                                                            ( ! [X5: $i] :
                                                                ( ( in @ X5 @ X1 )
                                                               => ! [X6: $i] :
                                                                    ( ( in @ X6 @ X2 )
                                                                   => ( ( X5 = X6 )
                                                                     => ( ( X3 @ X5 )
                                                                        = ( X4 @ X6 ) ) ) ) )
                                                           => ( ( dsetconstr @ X1 @ X3 )
                                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                   => ( sP26
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( subset @ X2 @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( X1 = X2 )
                                                             => ( subset @ X1 @ X2 ) )
                                                         => ( sP26
                                                           => ( ( !! @ ( subset @ emptyset ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( subset @ X1 @ X2 )
                                                                   => ( ( in @ X3 @ X1 )
                                                                     => ( in @ X3 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( subset @ X1 @ X2 )
                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ~ ( subset @ X1 @ X2 )
                                                                         => ( X1 != X2 ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                             => ( X1 != X2 ) ) )
                                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( ( subset @ X2 @ X3 )
                                                                                 => ( subset @ X1 @ X3 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( subset @ X1 @ X3 )
                                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                               => ( sP1
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( subset @ X1 @ X2 )
                                                                                       => ( ( subset @ X2 @ X1 )
                                                                                         => ( X1 = X2 ) ) )
                                                                                   => ( ! [X1: $i] :
                                                                                          ( ( subset @ X1 @ emptyset )
                                                                                         => ( X1 = emptyset ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( subset @ X2 @ X1 )
                                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                             => ( subset @ X2 @ X1 ) )
                                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( subset @ X1 @ X2 )
                                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X2 )
                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                                 => X4 )
                                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                                   => X4 )
                                                                                                                 => X4 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                                       => ( in @ X3
                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                                       => ( subset @ X3
                                                                                                                          @ ( dsetconstr @ X1
                                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h99,assumption,
    ! [X1: $i > $o,X2: $i] :
      ( ( in @ X2 @ emptyset )
     => ( X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h100,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
           => ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
             => ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) ) )
           => ( ! [X1: $o] :
                  ( X1
                 => ( in @ emptyset @ ( prop2set @ X1 ) ) )
             => ( ! [X1: $o] :
                    ( X1
                   => ( set2prop @ ( prop2set @ X1 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) )
                     => ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ~ ( X2 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] :
                        ( ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) )
                       => ~ ! [X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( X2 @ X3 ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ~ ! [X2: $i] :
                                ( ( X1 @ X2 )
                               => ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) )
                         => ( exu @ X1 ) )
                     => ( ! [X1: $i > $o] :
                            ( ~ ! [X2: $i] :
                                  ~ ( X1 @ X2 )
                           => ( ! [X2: $i,X3: $i] :
                                  ( ( X1 @ X2 )
                                 => ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) )
                             => ( exu @ X1 ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ~ ! [X2: $i] :
                                    ~ ! [X3: $i] :
                                        ( ( X1 @ X3 )
                                        = ( X3 = X2 ) )
                             => ( exu @ X1 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ! [X3: $i,X4: $i] :
                                    ( ( X3 = X4 )
                                   => ( ( in @ X3 @ X1 )
                                     => ( in @ X4 @ X2 ) ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ! [X3: $i,X4: $i] :
                                      ( ( X3 = X4 )
                                     => ( ( in @ X3 @ X1 )
                                        = ( in @ X4 @ X2 ) ) ) )
                             => ( ! [X1: $i > $o] :
                                    ( ( exu @ X1 )
                                   => ! [X2: $i,X3: $i] :
                                        ( ( X1 @ X2 )
                                       => ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) ) )
                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                      ( ! [X3: $i,X4: $i] :
                                          ( ( X3 = X4 )
                                         => ( ( X1 @ X3 )
                                            = ( X2 @ X4 ) ) )
                                     => ( ( exu @ X1 )
                                        = ( exu @ X2 ) ) )
                                 => ( ( emptyset = emptyset )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( setadjoin @ X1 @ X3 )
                                                = ( setadjoin @ X2 @ X4 ) ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ( ( powerset @ X1 )
                                              = ( powerset @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ( ( setunion @ X1 )
                                                = ( setunion @ X2 ) ) )
                                         => ( ( omega = omega )
                                           => ( ! [X1: $i > $o] :
                                                  ( ( exu @ X1 )
                                                 => ! [X2: $i,X3: $i] :
                                                      ( ( X1 @ X2 )
                                                     => ( ( X1 @ X3 )
                                                       => ( X2 = X3 ) ) ) )
                                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                                    ( ! [X3: $i,X4: $i] :
                                                        ( ( X3 = X4 )
                                                       => ( ( X1 @ X3 )
                                                          = ( X2 @ X4 ) ) )
                                                   => ( ( exu @ X1 )
                                                     => ( ( exu @ X2 )
                                                       => ( ( descr @ X1 )
                                                          = ( descr @ X2 ) ) ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ! [X3: $i > $o,X4: $i > $o] :
                                                          ( ! [X5: $i] :
                                                              ( ( in @ X5 @ X1 )
                                                             => ! [X6: $i] :
                                                                  ( ( in @ X6 @ X2 )
                                                                 => ( ( X5 = X6 )
                                                                   => ( ( X3 @ X5 )
                                                                      = ( X4 @ X6 ) ) ) ) )
                                                         => ( ( dsetconstr @ X1 @ X3 )
                                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                 => ( sP26
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( subset @ X2 @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( X1 = X2 )
                                                           => ( subset @ X1 @ X2 ) )
                                                       => ( sP26
                                                         => ( ( !! @ ( subset @ emptyset ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( ( in @ X3 @ X1 )
                                                                   => ( in @ X3 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( subset @ X1 @ X2 )
                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                     => ~ ( in @ X3 @ X1 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ~ ( subset @ X1 @ X2 )
                                                                       => ( X1 != X2 ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                           => ( X1 != X2 ) ) )
                                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( subset @ X1 @ X2 )
                                                                             => ( ( subset @ X2 @ X3 )
                                                                               => ( subset @ X1 @ X3 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X1 @ X3 )
                                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                             => ( sP1
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( subset @ X1 @ X2 )
                                                                                     => ( ( subset @ X2 @ X1 )
                                                                                       => ( X1 = X2 ) ) )
                                                                                 => ( ! [X1: $i] :
                                                                                        ( ( subset @ X1 @ emptyset )
                                                                                       => ( X1 = emptyset ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( subset @ X2 @ X1 )
                                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                           => ( subset @ X2 @ X1 ) )
                                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( subset @ X1 @ X2 )
                                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ X2 )
                                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                                               => X4 )
                                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                                 => X4 )
                                                                                                               => X4 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                                     => ( in @ X3
                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                                     => ( subset @ X3
                                                                                                                        @ ( dsetconstr @ X1
                                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h101,assumption,
    ! [X1: $i,X2: $i > $o] :
      ( ~ ! [X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( X2 @ X3 ) )
     => ~ ! [X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( X2 @ X3 ) ) ),
    introduced(assumption,[]) ).

thf(h102,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
           => ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) )
             => ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) ) )
         => ( ! [X1: $o] :
                ( X1
               => ( in @ emptyset @ ( prop2set @ X1 ) ) )
           => ( ! [X1: $o] :
                  ( X1
                 => ( set2prop @ ( prop2set @ X1 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) )
                   => ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ~ ( X2 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i > $o] :
                      ( ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) )
                     => ~ ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( X2 @ X3 ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ~ ! [X2: $i] :
                              ( ( X1 @ X2 )
                             => ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) )
                       => ( exu @ X1 ) )
                   => ( ! [X1: $i > $o] :
                          ( ~ ! [X2: $i] :
                                ~ ( X1 @ X2 )
                         => ( ! [X2: $i,X3: $i] :
                                ( ( X1 @ X2 )
                               => ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) )
                           => ( exu @ X1 ) ) )
                     => ( ! [X1: $i > $o] :
                            ( ~ ! [X2: $i] :
                                  ~ ! [X3: $i] :
                                      ( ( X1 @ X3 )
                                      = ( X3 = X2 ) )
                           => ( exu @ X1 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ! [X3: $i,X4: $i] :
                                  ( ( X3 = X4 )
                                 => ( ( in @ X3 @ X1 )
                                   => ( in @ X4 @ X2 ) ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ! [X3: $i,X4: $i] :
                                    ( ( X3 = X4 )
                                   => ( ( in @ X3 @ X1 )
                                      = ( in @ X4 @ X2 ) ) ) )
                           => ( ! [X1: $i > $o] :
                                  ( ( exu @ X1 )
                                 => ! [X2: $i,X3: $i] :
                                      ( ( X1 @ X2 )
                                     => ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) ) )
                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                    ( ! [X3: $i,X4: $i] :
                                        ( ( X3 = X4 )
                                       => ( ( X1 @ X3 )
                                          = ( X2 @ X4 ) ) )
                                   => ( ( exu @ X1 )
                                      = ( exu @ X2 ) ) )
                               => ( ( emptyset = emptyset )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( setadjoin @ X1 @ X3 )
                                              = ( setadjoin @ X2 @ X4 ) ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ( ( powerset @ X1 )
                                            = ( powerset @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ( ( setunion @ X1 )
                                              = ( setunion @ X2 ) ) )
                                       => ( ( omega = omega )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ! [X2: $i,X3: $i] :
                                                    ( ( X1 @ X2 )
                                                   => ( ( X1 @ X3 )
                                                     => ( X2 = X3 ) ) ) )
                                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                                  ( ! [X3: $i,X4: $i] :
                                                      ( ( X3 = X4 )
                                                     => ( ( X1 @ X3 )
                                                        = ( X2 @ X4 ) ) )
                                                 => ( ( exu @ X1 )
                                                   => ( ( exu @ X2 )
                                                     => ( ( descr @ X1 )
                                                        = ( descr @ X2 ) ) ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ! [X3: $i > $o,X4: $i > $o] :
                                                        ( ! [X5: $i] :
                                                            ( ( in @ X5 @ X1 )
                                                           => ! [X6: $i] :
                                                                ( ( in @ X6 @ X2 )
                                                               => ( ( X5 = X6 )
                                                                 => ( ( X3 @ X5 )
                                                                    = ( X4 @ X6 ) ) ) ) )
                                                       => ( ( dsetconstr @ X1 @ X3 )
                                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                                               => ( sP26
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( subset @ X2 @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( X1 = X2 )
                                                         => ( subset @ X1 @ X2 ) )
                                                     => ( sP26
                                                       => ( ( !! @ ( subset @ emptyset ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( subset @ X1 @ X2 )
                                                               => ( ( in @ X3 @ X1 )
                                                                 => ( in @ X3 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                   => ~ ( in @ X3 @ X1 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ~ ( subset @ X1 @ X2 )
                                                                     => ( X1 != X2 ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( ~ ( in @ X3 @ X2 )
                                                                         => ( X1 != X2 ) ) )
                                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( subset @ X1 @ X2 )
                                                                           => ( ( subset @ X2 @ X3 )
                                                                             => ( subset @ X1 @ X3 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X1 @ X3 )
                                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                           => ( sP1
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( subset @ X1 @ X2 )
                                                                                   => ( ( subset @ X2 @ X1 )
                                                                                     => ( X1 = X2 ) ) )
                                                                               => ( ! [X1: $i] :
                                                                                      ( ( subset @ X1 @ emptyset )
                                                                                     => ( X1 = emptyset ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( subset @ X2 @ X1 )
                                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                         => ( subset @ X2 @ X1 ) )
                                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( subset @ X1 @ X2 )
                                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X2 )
                                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                                             => X4 )
                                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                                               => X4 )
                                                                                                             => X4 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                                   => ( in @ X3
                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                                   => ( subset @ X3
                                                                                                                      @ ( dsetconstr @ X1
                                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h103,assumption,
    ! [X1: $i,X2: $i > $o] :
      ( ! [X3: $i] :
          ( ( in @ X3 @ X1 )
         => ~ ( X2 @ X3 ) )
     => ! [X3: $i] :
          ( ( in @ X3 @ X1 )
         => ~ ( X2 @ X3 ) ) ),
    introduced(assumption,[]) ).

thf(h104,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) ) )
       => ( ! [X1: $o] :
              ( X1
             => ( in @ emptyset @ ( prop2set @ X1 ) ) )
         => ( ! [X1: $o] :
                ( X1
               => ( set2prop @ ( prop2set @ X1 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) )
                 => ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ~ ( X2 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i > $o] :
                    ( ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) )
                   => ~ ! [X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( X2 @ X3 ) ) )
               => ( ! [X1: $i > $o] :
                      ( ~ ! [X2: $i] :
                            ( ( X1 @ X2 )
                           => ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) )
                     => ( exu @ X1 ) )
                 => ( ! [X1: $i > $o] :
                        ( ~ ! [X2: $i] :
                              ~ ( X1 @ X2 )
                       => ( ! [X2: $i,X3: $i] :
                              ( ( X1 @ X2 )
                             => ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) )
                         => ( exu @ X1 ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ~ ! [X2: $i] :
                                ~ ! [X3: $i] :
                                    ( ( X1 @ X3 )
                                    = ( X3 = X2 ) )
                         => ( exu @ X1 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ! [X3: $i,X4: $i] :
                                ( ( X3 = X4 )
                               => ( ( in @ X3 @ X1 )
                                 => ( in @ X4 @ X2 ) ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ! [X3: $i,X4: $i] :
                                  ( ( X3 = X4 )
                                 => ( ( in @ X3 @ X1 )
                                    = ( in @ X4 @ X2 ) ) ) )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ! [X2: $i,X3: $i] :
                                    ( ( X1 @ X2 )
                                   => ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) ) )
                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                  ( ! [X3: $i,X4: $i] :
                                      ( ( X3 = X4 )
                                     => ( ( X1 @ X3 )
                                        = ( X2 @ X4 ) ) )
                                 => ( ( exu @ X1 )
                                    = ( exu @ X2 ) ) )
                             => ( ( emptyset = emptyset )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ! [X3: $i,X4: $i] :
                                          ( ( X3 = X4 )
                                         => ( ( setadjoin @ X1 @ X3 )
                                            = ( setadjoin @ X2 @ X4 ) ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ( ( powerset @ X1 )
                                          = ( powerset @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ( ( setunion @ X1 )
                                            = ( setunion @ X2 ) ) )
                                     => ( ( omega = omega )
                                       => ( ! [X1: $i > $o] :
                                              ( ( exu @ X1 )
                                             => ! [X2: $i,X3: $i] :
                                                  ( ( X1 @ X2 )
                                                 => ( ( X1 @ X3 )
                                                   => ( X2 = X3 ) ) ) )
                                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                                ( ! [X3: $i,X4: $i] :
                                                    ( ( X3 = X4 )
                                                   => ( ( X1 @ X3 )
                                                      = ( X2 @ X4 ) ) )
                                               => ( ( exu @ X1 )
                                                 => ( ( exu @ X2 )
                                                   => ( ( descr @ X1 )
                                                      = ( descr @ X2 ) ) ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ! [X3: $i > $o,X4: $i > $o] :
                                                      ( ! [X5: $i] :
                                                          ( ( in @ X5 @ X1 )
                                                         => ! [X6: $i] :
                                                              ( ( in @ X6 @ X2 )
                                                             => ( ( X5 = X6 )
                                                               => ( ( X3 @ X5 )
                                                                  = ( X4 @ X6 ) ) ) ) )
                                                     => ( ( dsetconstr @ X1 @ X3 )
                                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                                             => ( sP26
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ( subset @ X2 @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( X1 = X2 )
                                                       => ( subset @ X1 @ X2 ) )
                                                   => ( sP26
                                                     => ( ( !! @ ( subset @ emptyset ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( subset @ X1 @ X2 )
                                                             => ( ( in @ X3 @ X1 )
                                                               => ( in @ X3 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( subset @ X1 @ X2 )
                                                               => ( ~ ( in @ X3 @ X2 )
                                                                 => ~ ( in @ X3 @ X1 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ~ ( subset @ X1 @ X2 )
                                                                   => ( X1 != X2 ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( ~ ( in @ X3 @ X2 )
                                                                       => ( X1 != X2 ) ) )
                                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( subset @ X1 @ X2 )
                                                                         => ( ( subset @ X2 @ X3 )
                                                                           => ( subset @ X1 @ X3 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( subset @ X1 @ X3 )
                                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                         => ( sP1
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( ( subset @ X2 @ X1 )
                                                                                   => ( X1 = X2 ) ) )
                                                                             => ( ! [X1: $i] :
                                                                                    ( ( subset @ X1 @ emptyset )
                                                                                   => ( X1 = emptyset ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( subset @ X2 @ X1 )
                                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                       => ( subset @ X2 @ X1 ) )
                                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                            ( ( subset @ X1 @ X2 )
                                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ X2 )
                                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                                           => X4 )
                                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                                             => X4 )
                                                                                                           => X4 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                                 => ( in @ X3
                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                ( ( subset @ X3 @ X1 )
                                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                                 => ( subset @ X3
                                                                                                                    @ ( dsetconstr @ X1
                                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h105,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => ( ! [X1: $o] :
            ( X1
           => ( in @ emptyset @ ( prop2set @ X1 ) ) )
       => ( ! [X1: $o] :
              ( X1
             => ( set2prop @ ( prop2set @ X1 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) )
               => ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ~ ( X2 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i > $o] :
                  ( ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) )
                 => ~ ! [X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( X2 @ X3 ) ) )
             => ( ! [X1: $i > $o] :
                    ( ~ ! [X2: $i] :
                          ( ( X1 @ X2 )
                         => ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) )
                   => ( exu @ X1 ) )
               => ( ! [X1: $i > $o] :
                      ( ~ ! [X2: $i] :
                            ~ ( X1 @ X2 )
                     => ( ! [X2: $i,X3: $i] :
                            ( ( X1 @ X2 )
                           => ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) )
                       => ( exu @ X1 ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ~ ! [X2: $i] :
                              ~ ! [X3: $i] :
                                  ( ( X1 @ X3 )
                                  = ( X3 = X2 ) )
                       => ( exu @ X1 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ! [X3: $i,X4: $i] :
                              ( ( X3 = X4 )
                             => ( ( in @ X3 @ X1 )
                               => ( in @ X4 @ X2 ) ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ! [X3: $i,X4: $i] :
                                ( ( X3 = X4 )
                               => ( ( in @ X3 @ X1 )
                                  = ( in @ X4 @ X2 ) ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ! [X2: $i,X3: $i] :
                                  ( ( X1 @ X2 )
                                 => ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) ) )
                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                ( ! [X3: $i,X4: $i] :
                                    ( ( X3 = X4 )
                                   => ( ( X1 @ X3 )
                                      = ( X2 @ X4 ) ) )
                               => ( ( exu @ X1 )
                                  = ( exu @ X2 ) ) )
                           => ( ( emptyset = emptyset )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ! [X3: $i,X4: $i] :
                                        ( ( X3 = X4 )
                                       => ( ( setadjoin @ X1 @ X3 )
                                          = ( setadjoin @ X2 @ X4 ) ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ( ( powerset @ X1 )
                                        = ( powerset @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ( ( setunion @ X1 )
                                          = ( setunion @ X2 ) ) )
                                   => ( ( omega = omega )
                                     => ( ! [X1: $i > $o] :
                                            ( ( exu @ X1 )
                                           => ! [X2: $i,X3: $i] :
                                                ( ( X1 @ X2 )
                                               => ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                       => ( ! [X1: $i > $o,X2: $i > $o] :
                                              ( ! [X3: $i,X4: $i] :
                                                  ( ( X3 = X4 )
                                                 => ( ( X1 @ X3 )
                                                    = ( X2 @ X4 ) ) )
                                             => ( ( exu @ X1 )
                                               => ( ( exu @ X2 )
                                                 => ( ( descr @ X1 )
                                                    = ( descr @ X2 ) ) ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ! [X3: $i > $o,X4: $i > $o] :
                                                    ( ! [X5: $i] :
                                                        ( ( in @ X5 @ X1 )
                                                       => ! [X6: $i] :
                                                            ( ( in @ X6 @ X2 )
                                                           => ( ( X5 = X6 )
                                                             => ( ( X3 @ X5 )
                                                                = ( X4 @ X6 ) ) ) ) )
                                                   => ( ( dsetconstr @ X1 @ X3 )
                                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                                           => ( sP26
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ( subset @ X2 @ X1 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( X1 = X2 )
                                                     => ( subset @ X1 @ X2 ) )
                                                 => ( sP26
                                                   => ( ( !! @ ( subset @ emptyset ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( subset @ X1 @ X2 )
                                                           => ( ( in @ X3 @ X1 )
                                                             => ( in @ X3 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( subset @ X1 @ X2 )
                                                             => ( ~ ( in @ X3 @ X2 )
                                                               => ~ ( in @ X3 @ X1 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( ~ ( in @ X3 @ X2 )
                                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ~ ( subset @ X1 @ X2 )
                                                                 => ( X1 != X2 ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( ~ ( in @ X3 @ X2 )
                                                                     => ( X1 != X2 ) ) )
                                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( subset @ X1 @ X2 )
                                                                       => ( ( subset @ X2 @ X3 )
                                                                         => ( subset @ X1 @ X3 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( subset @ X1 @ X3 )
                                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                       => ( sP1
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( ( subset @ X2 @ X1 )
                                                                                 => ( X1 = X2 ) ) )
                                                                           => ( ! [X1: $i] :
                                                                                  ( ( subset @ X1 @ emptyset )
                                                                                 => ( X1 = emptyset ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( subset @ X2 @ X1 )
                                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                     => ( subset @ X2 @ X1 ) )
                                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                   => ( ! [X1: $i,X2: $i] :
                                                                                          ( ( subset @ X1 @ X2 )
                                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ X2 )
                                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                                         => X4 )
                                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                                           => X4 )
                                                                                                         => X4 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( in @ X3 @ X1 )
                                                                                                             => ( ( in @ X3 @ X2 )
                                                                                                               => ( in @ X3
                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                              ( ( subset @ X3 @ X1 )
                                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                                               => ( subset @ X3
                                                                                                                  @ ( dsetconstr @ X1
                                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h106,assumption,
    ~ ( ! [X1: $o] :
          ( X1
         => ( in @ emptyset @ ( prop2set @ X1 ) ) )
     => ( ! [X1: $o] :
            ( X1
           => ( set2prop @ ( prop2set @ X1 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) )
             => ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ~ ( X2 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i > $o] :
                ( ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) )
               => ~ ! [X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( X2 @ X3 ) ) )
           => ( ! [X1: $i > $o] :
                  ( ~ ! [X2: $i] :
                        ( ( X1 @ X2 )
                       => ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) )
                 => ( exu @ X1 ) )
             => ( ! [X1: $i > $o] :
                    ( ~ ! [X2: $i] :
                          ~ ( X1 @ X2 )
                   => ( ! [X2: $i,X3: $i] :
                          ( ( X1 @ X2 )
                         => ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) )
                     => ( exu @ X1 ) ) )
               => ( ! [X1: $i > $o] :
                      ( ~ ! [X2: $i] :
                            ~ ! [X3: $i] :
                                ( ( X1 @ X3 )
                                = ( X3 = X2 ) )
                     => ( exu @ X1 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ! [X3: $i,X4: $i] :
                            ( ( X3 = X4 )
                           => ( ( in @ X3 @ X1 )
                             => ( in @ X4 @ X2 ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ! [X3: $i,X4: $i] :
                              ( ( X3 = X4 )
                             => ( ( in @ X3 @ X1 )
                                = ( in @ X4 @ X2 ) ) ) )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ! [X2: $i,X3: $i] :
                                ( ( X1 @ X2 )
                               => ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) ) )
                       => ( ! [X1: $i > $o,X2: $i > $o] :
                              ( ! [X3: $i,X4: $i] :
                                  ( ( X3 = X4 )
                                 => ( ( X1 @ X3 )
                                    = ( X2 @ X4 ) ) )
                             => ( ( exu @ X1 )
                                = ( exu @ X2 ) ) )
                         => ( ( emptyset = emptyset )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ! [X3: $i,X4: $i] :
                                      ( ( X3 = X4 )
                                     => ( ( setadjoin @ X1 @ X3 )
                                        = ( setadjoin @ X2 @ X4 ) ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ( ( powerset @ X1 )
                                      = ( powerset @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ( ( setunion @ X1 )
                                        = ( setunion @ X2 ) ) )
                                 => ( ( omega = omega )
                                   => ( ! [X1: $i > $o] :
                                          ( ( exu @ X1 )
                                         => ! [X2: $i,X3: $i] :
                                              ( ( X1 @ X2 )
                                             => ( ( X1 @ X3 )
                                               => ( X2 = X3 ) ) ) )
                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                            ( ! [X3: $i,X4: $i] :
                                                ( ( X3 = X4 )
                                               => ( ( X1 @ X3 )
                                                  = ( X2 @ X4 ) ) )
                                           => ( ( exu @ X1 )
                                             => ( ( exu @ X2 )
                                               => ( ( descr @ X1 )
                                                  = ( descr @ X2 ) ) ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ! [X3: $i > $o,X4: $i > $o] :
                                                  ( ! [X5: $i] :
                                                      ( ( in @ X5 @ X1 )
                                                     => ! [X6: $i] :
                                                          ( ( in @ X6 @ X2 )
                                                         => ( ( X5 = X6 )
                                                           => ( ( X3 @ X5 )
                                                              = ( X4 @ X6 ) ) ) ) )
                                                 => ( ( dsetconstr @ X1 @ X3 )
                                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                                         => ( sP26
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ( subset @ X2 @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( X1 = X2 )
                                                   => ( subset @ X1 @ X2 ) )
                                               => ( sP26
                                                 => ( ( !! @ ( subset @ emptyset ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( subset @ X1 @ X2 )
                                                         => ( ( in @ X3 @ X1 )
                                                           => ( in @ X3 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( subset @ X1 @ X2 )
                                                           => ( ~ ( in @ X3 @ X2 )
                                                             => ~ ( in @ X3 @ X1 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( ~ ( in @ X3 @ X2 )
                                                               => ~ ( subset @ X1 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ~ ( subset @ X1 @ X2 )
                                                               => ( X1 != X2 ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( ~ ( in @ X3 @ X2 )
                                                                   => ( X1 != X2 ) ) )
                                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( subset @ X1 @ X2 )
                                                                     => ( ( subset @ X2 @ X3 )
                                                                       => ( subset @ X1 @ X3 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( subset @ X1 @ X3 )
                                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                     => ( sP1
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( subset @ X1 @ X2 )
                                                                             => ( ( subset @ X2 @ X1 )
                                                                               => ( X1 = X2 ) ) )
                                                                         => ( ! [X1: $i] :
                                                                                ( ( subset @ X1 @ emptyset )
                                                                               => ( X1 = emptyset ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( subset @ X2 @ X1 )
                                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                   => ( subset @ X2 @ X1 ) )
                                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( subset @ X1 @ X2 )
                                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ X2 )
                                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                                       => X4 )
                                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                                         => X4 )
                                                                                                       => X4 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                           => ( ( in @ X3 @ X2 )
                                                                                                             => ( in @ X3
                                                                                                                @ ( dsetconstr @ X1
                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                            ( ( subset @ X3 @ X1 )
                                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                                             => ( subset @ X3
                                                                                                                @ ( dsetconstr @ X1
                                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h107,assumption,
    ! [X1: $o] :
      ( X1
     => ( in @ emptyset @ ( prop2set @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h108,assumption,
    ~ ( ! [X1: $o] :
          ( X1
         => ( set2prop @ ( prop2set @ X1 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) )
           => ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ~ ( X2 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i > $o] :
              ( ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) )
             => ~ ! [X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( X2 @ X3 ) ) )
         => ( ! [X1: $i > $o] :
                ( ~ ! [X2: $i] :
                      ( ( X1 @ X2 )
                     => ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) )
               => ( exu @ X1 ) )
           => ( ! [X1: $i > $o] :
                  ( ~ ! [X2: $i] :
                        ~ ( X1 @ X2 )
                 => ( ! [X2: $i,X3: $i] :
                        ( ( X1 @ X2 )
                       => ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) )
                   => ( exu @ X1 ) ) )
             => ( ! [X1: $i > $o] :
                    ( ~ ! [X2: $i] :
                          ~ ! [X3: $i] :
                              ( ( X1 @ X3 )
                              = ( X3 = X2 ) )
                   => ( exu @ X1 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( in @ X3 @ X1 )
                           => ( in @ X4 @ X2 ) ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ! [X3: $i,X4: $i] :
                            ( ( X3 = X4 )
                           => ( ( in @ X3 @ X1 )
                              = ( in @ X4 @ X2 ) ) ) )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ! [X2: $i,X3: $i] :
                              ( ( X1 @ X2 )
                             => ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) ) )
                     => ( ! [X1: $i > $o,X2: $i > $o] :
                            ( ! [X3: $i,X4: $i] :
                                ( ( X3 = X4 )
                               => ( ( X1 @ X3 )
                                  = ( X2 @ X4 ) ) )
                           => ( ( exu @ X1 )
                              = ( exu @ X2 ) ) )
                       => ( ( emptyset = emptyset )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ! [X3: $i,X4: $i] :
                                    ( ( X3 = X4 )
                                   => ( ( setadjoin @ X1 @ X3 )
                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ( ( powerset @ X1 )
                                    = ( powerset @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ( ( setunion @ X1 )
                                      = ( setunion @ X2 ) ) )
                               => ( ( omega = omega )
                                 => ( ! [X1: $i > $o] :
                                        ( ( exu @ X1 )
                                       => ! [X2: $i,X3: $i] :
                                            ( ( X1 @ X2 )
                                           => ( ( X1 @ X3 )
                                             => ( X2 = X3 ) ) ) )
                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                          ( ! [X3: $i,X4: $i] :
                                              ( ( X3 = X4 )
                                             => ( ( X1 @ X3 )
                                                = ( X2 @ X4 ) ) )
                                         => ( ( exu @ X1 )
                                           => ( ( exu @ X2 )
                                             => ( ( descr @ X1 )
                                                = ( descr @ X2 ) ) ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                ( ! [X5: $i] :
                                                    ( ( in @ X5 @ X1 )
                                                   => ! [X6: $i] :
                                                        ( ( in @ X6 @ X2 )
                                                       => ( ( X5 = X6 )
                                                         => ( ( X3 @ X5 )
                                                            = ( X4 @ X6 ) ) ) ) )
                                               => ( ( dsetconstr @ X1 @ X3 )
                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                       => ( sP26
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ( subset @ X2 @ X1 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( X1 = X2 )
                                                 => ( subset @ X1 @ X2 ) )
                                             => ( sP26
                                               => ( ( !! @ ( subset @ emptyset ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( ( in @ X3 @ X1 )
                                                         => ( in @ X3 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( subset @ X1 @ X2 )
                                                         => ( ~ ( in @ X3 @ X2 )
                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ~ ( in @ X3 @ X2 )
                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ~ ( subset @ X1 @ X2 )
                                                             => ( X1 != X2 ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( ~ ( in @ X3 @ X2 )
                                                                 => ( X1 != X2 ) ) )
                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( subset @ X1 @ X2 )
                                                                   => ( ( subset @ X2 @ X3 )
                                                                     => ( subset @ X1 @ X3 ) ) )
                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( subset @ X1 @ X3 )
                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                   => ( sP1
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( subset @ X1 @ X2 )
                                                                           => ( ( subset @ X2 @ X1 )
                                                                             => ( X1 = X2 ) ) )
                                                                       => ( ! [X1: $i] :
                                                                              ( ( subset @ X1 @ emptyset )
                                                                             => ( X1 = emptyset ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( subset @ X2 @ X1 )
                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                 => ( subset @ X2 @ X1 ) )
                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( subset @ X1 @ X2 )
                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ X2 )
                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                     => X4 )
                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                       => X4 )
                                                                                                     => X4 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                           => ( in @ X3
                                                                                                              @ ( dsetconstr @ X1
                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                           => ( subset @ X3
                                                                                                              @ ( dsetconstr @ X1
                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h109,assumption,
    ! [X1: $o] :
      ( X1
     => ( set2prop @ ( prop2set @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h110,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) )
         => ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ~ ( X2 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i > $o] :
            ( ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) )
           => ~ ! [X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( X2 @ X3 ) ) )
       => ( ! [X1: $i > $o] :
              ( ~ ! [X2: $i] :
                    ( ( X1 @ X2 )
                   => ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) )
             => ( exu @ X1 ) )
         => ( ! [X1: $i > $o] :
                ( ~ ! [X2: $i] :
                      ~ ( X1 @ X2 )
               => ( ! [X2: $i,X3: $i] :
                      ( ( X1 @ X2 )
                     => ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) )
                 => ( exu @ X1 ) ) )
           => ( ! [X1: $i > $o] :
                  ( ~ ! [X2: $i] :
                        ~ ! [X3: $i] :
                            ( ( X1 @ X3 )
                            = ( X3 = X2 ) )
                 => ( exu @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( in @ X3 @ X1 )
                         => ( in @ X4 @ X2 ) ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( in @ X3 @ X1 )
                            = ( in @ X4 @ X2 ) ) ) )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ! [X2: $i,X3: $i] :
                            ( ( X1 @ X2 )
                           => ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) ) )
                   => ( ! [X1: $i > $o,X2: $i > $o] :
                          ( ! [X3: $i,X4: $i] :
                              ( ( X3 = X4 )
                             => ( ( X1 @ X3 )
                                = ( X2 @ X4 ) ) )
                         => ( ( exu @ X1 )
                            = ( exu @ X2 ) ) )
                     => ( ( emptyset = emptyset )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ! [X3: $i,X4: $i] :
                                  ( ( X3 = X4 )
                                 => ( ( setadjoin @ X1 @ X3 )
                                    = ( setadjoin @ X2 @ X4 ) ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ( ( powerset @ X1 )
                                  = ( powerset @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ( ( setunion @ X1 )
                                    = ( setunion @ X2 ) ) )
                             => ( ( omega = omega )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ! [X2: $i,X3: $i] :
                                          ( ( X1 @ X2 )
                                         => ( ( X1 @ X3 )
                                           => ( X2 = X3 ) ) ) )
                                 => ( ! [X1: $i > $o,X2: $i > $o] :
                                        ( ! [X3: $i,X4: $i] :
                                            ( ( X3 = X4 )
                                           => ( ( X1 @ X3 )
                                              = ( X2 @ X4 ) ) )
                                       => ( ( exu @ X1 )
                                         => ( ( exu @ X2 )
                                           => ( ( descr @ X1 )
                                              = ( descr @ X2 ) ) ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ! [X3: $i > $o,X4: $i > $o] :
                                              ( ! [X5: $i] :
                                                  ( ( in @ X5 @ X1 )
                                                 => ! [X6: $i] :
                                                      ( ( in @ X6 @ X2 )
                                                     => ( ( X5 = X6 )
                                                       => ( ( X3 @ X5 )
                                                          = ( X4 @ X6 ) ) ) ) )
                                             => ( ( dsetconstr @ X1 @ X3 )
                                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                                     => ( sP26
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ( subset @ X2 @ X1 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( X1 = X2 )
                                               => ( subset @ X1 @ X2 ) )
                                           => ( sP26
                                             => ( ( !! @ ( subset @ emptyset ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( ( in @ X3 @ X1 )
                                                       => ( in @ X3 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( ~ ( in @ X3 @ X2 )
                                                         => ~ ( in @ X3 @ X1 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( ~ ( in @ X3 @ X2 )
                                                           => ~ ( subset @ X1 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ~ ( subset @ X1 @ X2 )
                                                           => ( X1 != X2 ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( ~ ( in @ X3 @ X2 )
                                                               => ( X1 != X2 ) ) )
                                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( ( subset @ X2 @ X3 )
                                                                   => ( subset @ X1 @ X3 ) ) )
                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( subset @ X1 @ X3 )
                                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                 => ( sP1
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( subset @ X1 @ X2 )
                                                                         => ( ( subset @ X2 @ X1 )
                                                                           => ( X1 = X2 ) ) )
                                                                     => ( ! [X1: $i] :
                                                                            ( ( subset @ X1 @ emptyset )
                                                                           => ( X1 = emptyset ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( subset @ X2 @ X1 )
                                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                               => ( subset @ X2 @ X1 ) )
                                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                    ( ( subset @ X1 @ X2 )
                                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ X2 )
                                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                                   => X4 )
                                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                                     => X4 )
                                                                                                   => X4 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                       => ( ( in @ X3 @ X2 )
                                                                                                         => ( in @ X3
                                                                                                            @ ( dsetconstr @ X1
                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                        ( ( subset @ X3 @ X1 )
                                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                                         => ( subset @ X3
                                                                                                            @ ( dsetconstr @ X1
                                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h111,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] :
          ( ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) )
         => ~ ! [X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( X2 @ X3 ) ) )
     => ( ! [X1: $i > $o] :
            ( ~ ! [X2: $i] :
                  ( ( X1 @ X2 )
                 => ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) )
           => ( exu @ X1 ) )
       => ( ! [X1: $i > $o] :
              ( ~ ! [X2: $i] :
                    ~ ( X1 @ X2 )
             => ( ! [X2: $i,X3: $i] :
                    ( ( X1 @ X2 )
                   => ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
               => ( exu @ X1 ) ) )
         => ( ! [X1: $i > $o] :
                ( ~ ! [X2: $i] :
                      ~ ! [X3: $i] :
                          ( ( X1 @ X3 )
                          = ( X3 = X2 ) )
               => ( exu @ X1 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ! [X3: $i,X4: $i] :
                      ( ( X3 = X4 )
                     => ( ( in @ X3 @ X1 )
                       => ( in @ X4 @ X2 ) ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( in @ X3 @ X1 )
                          = ( in @ X4 @ X2 ) ) ) )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ! [X2: $i,X3: $i] :
                          ( ( X1 @ X2 )
                         => ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) ) )
                 => ( ! [X1: $i > $o,X2: $i > $o] :
                        ( ! [X3: $i,X4: $i] :
                            ( ( X3 = X4 )
                           => ( ( X1 @ X3 )
                              = ( X2 @ X4 ) ) )
                       => ( ( exu @ X1 )
                          = ( exu @ X2 ) ) )
                   => ( ( emptyset = emptyset )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ! [X3: $i,X4: $i] :
                                ( ( X3 = X4 )
                               => ( ( setadjoin @ X1 @ X3 )
                                  = ( setadjoin @ X2 @ X4 ) ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( ( powerset @ X1 )
                                = ( powerset @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ( ( setunion @ X1 )
                                  = ( setunion @ X2 ) ) )
                           => ( ( omega = omega )
                             => ( ! [X1: $i > $o] :
                                    ( ( exu @ X1 )
                                   => ! [X2: $i,X3: $i] :
                                        ( ( X1 @ X2 )
                                       => ( ( X1 @ X3 )
                                         => ( X2 = X3 ) ) ) )
                               => ( ! [X1: $i > $o,X2: $i > $o] :
                                      ( ! [X3: $i,X4: $i] :
                                          ( ( X3 = X4 )
                                         => ( ( X1 @ X3 )
                                            = ( X2 @ X4 ) ) )
                                     => ( ( exu @ X1 )
                                       => ( ( exu @ X2 )
                                         => ( ( descr @ X1 )
                                            = ( descr @ X2 ) ) ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ! [X3: $i > $o,X4: $i > $o] :
                                            ( ! [X5: $i] :
                                                ( ( in @ X5 @ X1 )
                                               => ! [X6: $i] :
                                                    ( ( in @ X6 @ X2 )
                                                   => ( ( X5 = X6 )
                                                     => ( ( X3 @ X5 )
                                                        = ( X4 @ X6 ) ) ) ) )
                                           => ( ( dsetconstr @ X1 @ X3 )
                                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                                   => ( sP26
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ( subset @ X2 @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( X1 = X2 )
                                             => ( subset @ X1 @ X2 ) )
                                         => ( sP26
                                           => ( ( !! @ ( subset @ emptyset ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X1 @ X2 )
                                                   => ( ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( ~ ( in @ X3 @ X2 )
                                                       => ~ ( in @ X3 @ X1 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ~ ( in @ X3 @ X2 )
                                                         => ~ ( subset @ X1 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ~ ( subset @ X1 @ X2 )
                                                         => ( X1 != X2 ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ~ ( in @ X3 @ X2 )
                                                             => ( X1 != X2 ) ) )
                                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( subset @ X1 @ X2 )
                                                               => ( ( subset @ X2 @ X3 )
                                                                 => ( subset @ X1 @ X3 ) ) )
                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( subset @ X1 @ X3 )
                                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                               => ( sP1
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( subset @ X1 @ X2 )
                                                                       => ( ( subset @ X2 @ X1 )
                                                                         => ( X1 = X2 ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( subset @ X1 @ emptyset )
                                                                         => ( X1 = emptyset ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( subset @ X2 @ X1 )
                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                             => ( subset @ X2 @ X1 ) )
                                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                  ( ( subset @ X1 @ X2 )
                                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ X2 )
                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                                 => X4 )
                                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                                   => X4 )
                                                                                                 => X4 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                     => ( ( in @ X3 @ X2 )
                                                                                                       => ( in @ X3
                                                                                                          @ ( dsetconstr @ X1
                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( subset @ X3 @ X1 )
                                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                                       => ( subset @ X3
                                                                                                          @ ( dsetconstr @ X1
                                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h112,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ( ( X1 @ X2 )
               => ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) )
         => ( exu @ X1 ) )
     => ( ! [X1: $i > $o] :
            ( ~ ! [X2: $i] :
                  ~ ( X1 @ X2 )
           => ( ! [X2: $i,X3: $i] :
                  ( ( X1 @ X2 )
                 => ( ( X1 @ X3 )
                   => ( X2 = X3 ) ) )
             => ( exu @ X1 ) ) )
       => ( ! [X1: $i > $o] :
              ( ~ ! [X2: $i] :
                    ~ ! [X3: $i] :
                        ( ( X1 @ X3 )
                        = ( X3 = X2 ) )
             => ( exu @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( in @ X3 @ X1 )
                     => ( in @ X4 @ X2 ) ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ! [X3: $i,X4: $i] :
                      ( ( X3 = X4 )
                     => ( ( in @ X3 @ X1 )
                        = ( in @ X4 @ X2 ) ) ) )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ! [X2: $i,X3: $i] :
                        ( ( X1 @ X2 )
                       => ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) ) )
               => ( ! [X1: $i > $o,X2: $i > $o] :
                      ( ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( X1 @ X3 )
                            = ( X2 @ X4 ) ) )
                     => ( ( exu @ X1 )
                        = ( exu @ X2 ) ) )
                 => ( ( emptyset = emptyset )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ! [X3: $i,X4: $i] :
                              ( ( X3 = X4 )
                             => ( ( setadjoin @ X1 @ X3 )
                                = ( setadjoin @ X2 @ X4 ) ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( ( powerset @ X1 )
                              = ( powerset @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( ( setunion @ X1 )
                                = ( setunion @ X2 ) ) )
                         => ( ( omega = omega )
                           => ( ! [X1: $i > $o] :
                                  ( ( exu @ X1 )
                                 => ! [X2: $i,X3: $i] :
                                      ( ( X1 @ X2 )
                                     => ( ( X1 @ X3 )
                                       => ( X2 = X3 ) ) ) )
                             => ( ! [X1: $i > $o,X2: $i > $o] :
                                    ( ! [X3: $i,X4: $i] :
                                        ( ( X3 = X4 )
                                       => ( ( X1 @ X3 )
                                          = ( X2 @ X4 ) ) )
                                   => ( ( exu @ X1 )
                                     => ( ( exu @ X2 )
                                       => ( ( descr @ X1 )
                                          = ( descr @ X2 ) ) ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ! [X3: $i > $o,X4: $i > $o] :
                                          ( ! [X5: $i] :
                                              ( ( in @ X5 @ X1 )
                                             => ! [X6: $i] :
                                                  ( ( in @ X6 @ X2 )
                                                 => ( ( X5 = X6 )
                                                   => ( ( X3 @ X5 )
                                                      = ( X4 @ X6 ) ) ) ) )
                                         => ( ( dsetconstr @ X1 @ X3 )
                                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                                 => ( sP26
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ( subset @ X2 @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( X1 = X2 )
                                           => ( subset @ X1 @ X2 ) )
                                       => ( sP26
                                         => ( ( !! @ ( subset @ emptyset ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( subset @ X1 @ X2 )
                                                 => ( ( in @ X3 @ X1 )
                                                   => ( in @ X3 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X1 @ X2 )
                                                   => ( ~ ( in @ X3 @ X2 )
                                                     => ~ ( in @ X3 @ X1 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ~ ( in @ X3 @ X2 )
                                                       => ~ ( subset @ X1 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ~ ( subset @ X1 @ X2 )
                                                       => ( X1 != X2 ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( ~ ( in @ X3 @ X2 )
                                                           => ( X1 != X2 ) ) )
                                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( subset @ X1 @ X2 )
                                                             => ( ( subset @ X2 @ X3 )
                                                               => ( subset @ X1 @ X3 ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( subset @ X1 @ X3 )
                                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                             => ( sP1
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( subset @ X1 @ X2 )
                                                                     => ( ( subset @ X2 @ X1 )
                                                                       => ( X1 = X2 ) ) )
                                                                 => ( ! [X1: $i] :
                                                                        ( ( subset @ X1 @ emptyset )
                                                                       => ( X1 = emptyset ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( subset @ X2 @ X1 )
                                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                           => ( subset @ X2 @ X1 ) )
                                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                ( ( subset @ X1 @ X2 )
                                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ X2 )
                                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                           => ( ( ( in @ X3 @ X1 )
                                                                                               => X4 )
                                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                                 => X4 )
                                                                                               => X4 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                                               => ( in @ X3 @ X2 ) ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                   => ( ( in @ X3 @ X2 )
                                                                                                     => ( in @ X3
                                                                                                        @ ( dsetconstr @ X1
                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                    ( ( subset @ X3 @ X1 )
                                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                                     => ( subset @ X3
                                                                                                        @ ( dsetconstr @ X1
                                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h113,assumption,
    ! [X1: $i > $o] :
      ( ~ ! [X2: $i] :
            ( ( X1 @ X2 )
           => ~ ! [X3: $i] :
                  ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
     => ( exu @ X1 ) ),
    introduced(assumption,[]) ).

thf(h114,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ( X1 @ X2 )
         => ( ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) )
           => ( exu @ X1 ) ) )
     => ( ! [X1: $i > $o] :
            ( ~ ! [X2: $i] :
                  ~ ! [X3: $i] :
                      ( ( X1 @ X3 )
                      = ( X3 = X2 ) )
           => ( exu @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( in @ X3 @ X1 )
                   => ( in @ X4 @ X2 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( in @ X3 @ X1 )
                      = ( in @ X4 @ X2 ) ) ) )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ! [X2: $i,X3: $i] :
                      ( ( X1 @ X2 )
                     => ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) ) )
             => ( ! [X1: $i > $o,X2: $i > $o] :
                    ( ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( X1 @ X3 )
                          = ( X2 @ X4 ) ) )
                   => ( ( exu @ X1 )
                      = ( exu @ X2 ) ) )
               => ( ( emptyset = emptyset )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ! [X3: $i,X4: $i] :
                            ( ( X3 = X4 )
                           => ( ( setadjoin @ X1 @ X3 )
                              = ( setadjoin @ X2 @ X4 ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ( ( powerset @ X1 )
                            = ( powerset @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( ( setunion @ X1 )
                              = ( setunion @ X2 ) ) )
                       => ( ( omega = omega )
                         => ( ! [X1: $i > $o] :
                                ( ( exu @ X1 )
                               => ! [X2: $i,X3: $i] :
                                    ( ( X1 @ X2 )
                                   => ( ( X1 @ X3 )
                                     => ( X2 = X3 ) ) ) )
                           => ( ! [X1: $i > $o,X2: $i > $o] :
                                  ( ! [X3: $i,X4: $i] :
                                      ( ( X3 = X4 )
                                     => ( ( X1 @ X3 )
                                        = ( X2 @ X4 ) ) )
                                 => ( ( exu @ X1 )
                                   => ( ( exu @ X2 )
                                     => ( ( descr @ X1 )
                                        = ( descr @ X2 ) ) ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ! [X3: $i > $o,X4: $i > $o] :
                                        ( ! [X5: $i] :
                                            ( ( in @ X5 @ X1 )
                                           => ! [X6: $i] :
                                                ( ( in @ X6 @ X2 )
                                               => ( ( X5 = X6 )
                                                 => ( ( X3 @ X5 )
                                                    = ( X4 @ X6 ) ) ) ) )
                                       => ( ( dsetconstr @ X1 @ X3 )
                                          = ( dsetconstr @ X2 @ X4 ) ) ) )
                               => ( sP26
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ( subset @ X2 @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( X1 = X2 )
                                         => ( subset @ X1 @ X2 ) )
                                     => ( sP26
                                       => ( ( !! @ ( subset @ emptyset ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( ( in @ X3 @ X1 )
                                                 => ( in @ X3 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( subset @ X1 @ X2 )
                                                 => ( ~ ( in @ X3 @ X2 )
                                                   => ~ ( in @ X3 @ X1 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ~ ( in @ X3 @ X2 )
                                                     => ~ ( subset @ X1 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ~ ( subset @ X1 @ X2 )
                                                     => ( X1 != X2 ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ~ ( in @ X3 @ X2 )
                                                         => ( X1 != X2 ) ) )
                                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( subset @ X1 @ X2 )
                                                           => ( ( subset @ X2 @ X3 )
                                                             => ( subset @ X1 @ X3 ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( subset @ X1 @ X3 )
                                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                           => ( sP1
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( subset @ X1 @ X2 )
                                                                   => ( ( subset @ X2 @ X1 )
                                                                     => ( X1 = X2 ) ) )
                                                               => ( ! [X1: $i] :
                                                                      ( ( subset @ X1 @ emptyset )
                                                                     => ( X1 = emptyset ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( subset @ X2 @ X1 )
                                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                         => ( subset @ X2 @ X1 ) )
                                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                       => ( ! [X1: $i,X2: $i] :
                                                                              ( ( subset @ X1 @ X2 )
                                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X2 )
                                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                         => ( ( ( in @ X3 @ X1 )
                                                                                             => X4 )
                                                                                           => ( ( ( in @ X3 @ X2 )
                                                                                               => X4 )
                                                                                             => X4 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                                             => ( in @ X3 @ X2 ) ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                 => ( ( in @ X3 @ X2 )
                                                                                                   => ( in @ X3
                                                                                                      @ ( dsetconstr @ X1
                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                  ( ( subset @ X3 @ X1 )
                                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                                   => ( subset @ X3
                                                                                                      @ ( dsetconstr @ X1
                                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h115,assumption,
    ! [X1: $i > $o] :
      ( ~ ! [X2: $i] :
            ~ ( X1 @ X2 )
     => ( ! [X2: $i,X3: $i] :
            ( ( X1 @ X2 )
           => ( ( X1 @ X3 )
             => ( X2 = X3 ) ) )
       => ( exu @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h116,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ~ ! [X2: $i] :
                ~ ! [X3: $i] :
                    ( ( X1 @ X3 )
                    = ( X3 = X2 ) )
         => ( exu @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( in @ X3 @ X1 )
                 => ( in @ X4 @ X2 ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( in @ X3 @ X1 )
                    = ( in @ X4 @ X2 ) ) ) )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ! [X2: $i,X3: $i] :
                    ( ( X1 @ X2 )
                   => ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) )
           => ( ! [X1: $i > $o,X2: $i > $o] :
                  ( ! [X3: $i,X4: $i] :
                      ( ( X3 = X4 )
                     => ( ( X1 @ X3 )
                        = ( X2 @ X4 ) ) )
                 => ( ( exu @ X1 )
                    = ( exu @ X2 ) ) )
             => ( ( emptyset = emptyset )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( setadjoin @ X1 @ X3 )
                            = ( setadjoin @ X2 @ X4 ) ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ( ( powerset @ X1 )
                          = ( powerset @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ( ( setunion @ X1 )
                            = ( setunion @ X2 ) ) )
                     => ( ( omega = omega )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ! [X2: $i,X3: $i] :
                                  ( ( X1 @ X2 )
                                 => ( ( X1 @ X3 )
                                   => ( X2 = X3 ) ) ) )
                         => ( ! [X1: $i > $o,X2: $i > $o] :
                                ( ! [X3: $i,X4: $i] :
                                    ( ( X3 = X4 )
                                   => ( ( X1 @ X3 )
                                      = ( X2 @ X4 ) ) )
                               => ( ( exu @ X1 )
                                 => ( ( exu @ X2 )
                                   => ( ( descr @ X1 )
                                      = ( descr @ X2 ) ) ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ! [X3: $i > $o,X4: $i > $o] :
                                      ( ! [X5: $i] :
                                          ( ( in @ X5 @ X1 )
                                         => ! [X6: $i] :
                                              ( ( in @ X6 @ X2 )
                                             => ( ( X5 = X6 )
                                               => ( ( X3 @ X5 )
                                                  = ( X4 @ X6 ) ) ) ) )
                                     => ( ( dsetconstr @ X1 @ X3 )
                                        = ( dsetconstr @ X2 @ X4 ) ) ) )
                             => ( sP26
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ( subset @ X2 @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( X1 = X2 )
                                       => ( subset @ X1 @ X2 ) )
                                   => ( sP26
                                     => ( ( !! @ ( subset @ emptyset ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( ( in @ X3 @ X1 )
                                               => ( in @ X3 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( ~ ( in @ X3 @ X2 )
                                                 => ~ ( in @ X3 @ X1 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( ~ ( in @ X3 @ X2 )
                                                   => ~ ( subset @ X1 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ~ ( subset @ X1 @ X2 )
                                                   => ( X1 != X2 ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ~ ( in @ X3 @ X2 )
                                                       => ( X1 != X2 ) ) )
                                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( subset @ X1 @ X2 )
                                                         => ( ( subset @ X2 @ X3 )
                                                           => ( subset @ X1 @ X3 ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( subset @ X1 @ X3 )
                                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                         => ( sP1
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( ( subset @ X2 @ X1 )
                                                                   => ( X1 = X2 ) ) )
                                                             => ( ! [X1: $i] :
                                                                    ( ( subset @ X1 @ emptyset )
                                                                   => ( X1 = emptyset ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( subset @ X2 @ X1 )
                                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                       => ( subset @ X2 @ X1 ) )
                                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ( subset @ X1 @ X2 )
                                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X2 )
                                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                       => ( ( ( in @ X3 @ X1 )
                                                                                           => X4 )
                                                                                         => ( ( ( in @ X3 @ X2 )
                                                                                             => X4 )
                                                                                           => X4 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                                           => ( in @ X3 @ X2 ) ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( in @ X3 @ X1 )
                                                                                               => ( ( in @ X3 @ X2 )
                                                                                                 => ( in @ X3
                                                                                                    @ ( dsetconstr @ X1
                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                ( ( subset @ X3 @ X1 )
                                                                                               => ( ( subset @ X3 @ X2 )
                                                                                                 => ( subset @ X3
                                                                                                    @ ( dsetconstr @ X1
                                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h117,assumption,
    ! [X1: $i > $o] :
      ( ~ ! [X2: $i] :
            ~ ! [X3: $i] :
                ( ( X1 @ X3 )
                = ( X3 = X2 ) )
     => ( exu @ X1 ) ),
    introduced(assumption,[]) ).

thf(h118,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X4 @ X2 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( in @ X3 @ X1 )
                  = ( in @ X4 @ X2 ) ) ) )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ! [X2: $i,X3: $i] :
                  ( ( X1 @ X2 )
                 => ( ( X1 @ X3 )
                   => ( X2 = X3 ) ) ) )
         => ( ! [X1: $i > $o,X2: $i > $o] :
                ( ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( X1 @ X3 )
                      = ( X2 @ X4 ) ) )
               => ( ( exu @ X1 )
                  = ( exu @ X2 ) ) )
           => ( ( emptyset = emptyset )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( setadjoin @ X1 @ X3 )
                          = ( setadjoin @ X2 @ X4 ) ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ( ( powerset @ X1 )
                        = ( powerset @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ( ( setunion @ X1 )
                          = ( setunion @ X2 ) ) )
                   => ( ( omega = omega )
                     => ( ! [X1: $i > $o] :
                            ( ( exu @ X1 )
                           => ! [X2: $i,X3: $i] :
                                ( ( X1 @ X2 )
                               => ( ( X1 @ X3 )
                                 => ( X2 = X3 ) ) ) )
                       => ( ! [X1: $i > $o,X2: $i > $o] :
                              ( ! [X3: $i,X4: $i] :
                                  ( ( X3 = X4 )
                                 => ( ( X1 @ X3 )
                                    = ( X2 @ X4 ) ) )
                             => ( ( exu @ X1 )
                               => ( ( exu @ X2 )
                                 => ( ( descr @ X1 )
                                    = ( descr @ X2 ) ) ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ! [X3: $i > $o,X4: $i > $o] :
                                    ( ! [X5: $i] :
                                        ( ( in @ X5 @ X1 )
                                       => ! [X6: $i] :
                                            ( ( in @ X6 @ X2 )
                                           => ( ( X5 = X6 )
                                             => ( ( X3 @ X5 )
                                                = ( X4 @ X6 ) ) ) ) )
                                   => ( ( dsetconstr @ X1 @ X3 )
                                      = ( dsetconstr @ X2 @ X4 ) ) ) )
                           => ( sP26
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ( subset @ X2 @ X1 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( X1 = X2 )
                                     => ( subset @ X1 @ X2 ) )
                                 => ( sP26
                                   => ( ( !! @ ( subset @ emptyset ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( ( in @ X3 @ X1 )
                                             => ( in @ X3 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( ~ ( in @ X3 @ X2 )
                                               => ~ ( in @ X3 @ X1 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ~ ( in @ X3 @ X2 )
                                                 => ~ ( subset @ X1 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ~ ( subset @ X1 @ X2 )
                                                 => ( X1 != X2 ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ~ ( in @ X3 @ X2 )
                                                     => ( X1 != X2 ) ) )
                                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( ( subset @ X2 @ X3 )
                                                         => ( subset @ X1 @ X3 ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( subset @ X1 @ X3 )
                                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                       => ( sP1
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( subset @ X1 @ X2 )
                                                               => ( ( subset @ X2 @ X1 )
                                                                 => ( X1 = X2 ) ) )
                                                           => ( ! [X1: $i] :
                                                                  ( ( subset @ X1 @ emptyset )
                                                                 => ( X1 = emptyset ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( subset @ X2 @ X1 )
                                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                     => ( subset @ X2 @ X1 ) )
                                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i] :
                                                                          ( ( subset @ X1 @ X2 )
                                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X2 )
                                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                     => ( ( ( in @ X3 @ X1 )
                                                                                         => X4 )
                                                                                       => ( ( ( in @ X3 @ X2 )
                                                                                           => X4 )
                                                                                         => X4 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( in @ X3 @ X1 )
                                                                                             => ( ( in @ X3 @ X2 )
                                                                                               => ( in @ X3
                                                                                                  @ ( dsetconstr @ X1
                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                                              ( ( subset @ X3 @ X1 )
                                                                                             => ( ( subset @ X3 @ X2 )
                                                                                               => ( subset @ X3
                                                                                                  @ ( dsetconstr @ X1
                                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h119,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ! [X3: $i,X4: $i] :
          ( ( X3 = X4 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X4 @ X2 ) ) ) ),
    introduced(assumption,[]) ).

thf(h120,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( in @ X3 @ X1 )
                = ( in @ X4 @ X2 ) ) ) )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) ) )
       => ( ! [X1: $i > $o,X2: $i > $o] :
              ( ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( X1 @ X3 )
                    = ( X2 @ X4 ) ) )
             => ( ( exu @ X1 )
                = ( exu @ X2 ) ) )
         => ( ( emptyset = emptyset )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ! [X3: $i,X4: $i] :
                      ( ( X3 = X4 )
                     => ( ( setadjoin @ X1 @ X3 )
                        = ( setadjoin @ X2 @ X4 ) ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( ( powerset @ X1 )
                      = ( powerset @ X2 ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ( ( setunion @ X1 )
                        = ( setunion @ X2 ) ) )
                 => ( ( omega = omega )
                   => ( ! [X1: $i > $o] :
                          ( ( exu @ X1 )
                         => ! [X2: $i,X3: $i] :
                              ( ( X1 @ X2 )
                             => ( ( X1 @ X3 )
                               => ( X2 = X3 ) ) ) )
                     => ( ! [X1: $i > $o,X2: $i > $o] :
                            ( ! [X3: $i,X4: $i] :
                                ( ( X3 = X4 )
                               => ( ( X1 @ X3 )
                                  = ( X2 @ X4 ) ) )
                           => ( ( exu @ X1 )
                             => ( ( exu @ X2 )
                               => ( ( descr @ X1 )
                                  = ( descr @ X2 ) ) ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ! [X3: $i > $o,X4: $i > $o] :
                                  ( ! [X5: $i] :
                                      ( ( in @ X5 @ X1 )
                                     => ! [X6: $i] :
                                          ( ( in @ X6 @ X2 )
                                         => ( ( X5 = X6 )
                                           => ( ( X3 @ X5 )
                                              = ( X4 @ X6 ) ) ) ) )
                                 => ( ( dsetconstr @ X1 @ X3 )
                                    = ( dsetconstr @ X2 @ X4 ) ) ) )
                         => ( sP26
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ( subset @ X2 @ X1 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( X1 = X2 )
                                   => ( subset @ X1 @ X2 ) )
                               => ( sP26
                                 => ( ( !! @ ( subset @ emptyset ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X1 @ X2 )
                                         => ( ( in @ X3 @ X1 )
                                           => ( in @ X3 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( ~ ( in @ X3 @ X2 )
                                             => ~ ( in @ X3 @ X1 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( ~ ( in @ X3 @ X2 )
                                               => ~ ( subset @ X1 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ~ ( subset @ X1 @ X2 )
                                               => ( X1 != X2 ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( ~ ( in @ X3 @ X2 )
                                                   => ( X1 != X2 ) ) )
                                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( ( subset @ X2 @ X3 )
                                                       => ( subset @ X1 @ X3 ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( subset @ X1 @ X3 )
                                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                     => ( sP1
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( subset @ X1 @ X2 )
                                                             => ( ( subset @ X2 @ X1 )
                                                               => ( X1 = X2 ) ) )
                                                         => ( ! [X1: $i] :
                                                                ( ( subset @ X1 @ emptyset )
                                                               => ( X1 = emptyset ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( subset @ X2 @ X1 )
                                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                   => ( subset @ X2 @ X1 ) )
                                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                 => ( ! [X1: $i,X2: $i] :
                                                                        ( ( subset @ X1 @ X2 )
                                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X2 )
                                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                   => ( ( ( in @ X3 @ X1 )
                                                                                       => X4 )
                                                                                     => ( ( ( in @ X3 @ X2 )
                                                                                         => X4 )
                                                                                       => X4 ) ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                                       => ( in @ X3 @ X2 ) ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( in @ X3 @ X1 )
                                                                                           => ( ( in @ X3 @ X2 )
                                                                                             => ( in @ X3
                                                                                                @ ( dsetconstr @ X1
                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                                            ( ( subset @ X3 @ X1 )
                                                                                           => ( ( subset @ X3 @ X2 )
                                                                                             => ( subset @ X3
                                                                                                @ ( dsetconstr @ X1
                                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h121,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ! [X3: $i,X4: $i] :
          ( ( X3 = X4 )
         => ( ( in @ X3 @ X1 )
            = ( in @ X4 @ X2 ) ) ) ),
    introduced(assumption,[]) ).

thf(h122,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) )
     => ( ! [X1: $i > $o,X2: $i > $o] :
            ( ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( X1 @ X3 )
                  = ( X2 @ X4 ) ) )
           => ( ( exu @ X1 )
              = ( exu @ X2 ) ) )
       => ( ( emptyset = emptyset )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( setadjoin @ X1 @ X3 )
                      = ( setadjoin @ X2 @ X4 ) ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( ( powerset @ X1 )
                    = ( powerset @ X2 ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( ( setunion @ X1 )
                      = ( setunion @ X2 ) ) )
               => ( ( omega = omega )
                 => ( ! [X1: $i > $o] :
                        ( ( exu @ X1 )
                       => ! [X2: $i,X3: $i] :
                            ( ( X1 @ X2 )
                           => ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) ) )
                   => ( ! [X1: $i > $o,X2: $i > $o] :
                          ( ! [X3: $i,X4: $i] :
                              ( ( X3 = X4 )
                             => ( ( X1 @ X3 )
                                = ( X2 @ X4 ) ) )
                         => ( ( exu @ X1 )
                           => ( ( exu @ X2 )
                             => ( ( descr @ X1 )
                                = ( descr @ X2 ) ) ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ! [X3: $i > $o,X4: $i > $o] :
                                ( ! [X5: $i] :
                                    ( ( in @ X5 @ X1 )
                                   => ! [X6: $i] :
                                        ( ( in @ X6 @ X2 )
                                       => ( ( X5 = X6 )
                                         => ( ( X3 @ X5 )
                                            = ( X4 @ X6 ) ) ) ) )
                               => ( ( dsetconstr @ X1 @ X3 )
                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                       => ( sP26
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ( subset @ X2 @ X1 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( X1 = X2 )
                                 => ( subset @ X1 @ X2 ) )
                             => ( sP26
                               => ( ( !! @ ( subset @ emptyset ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( subset @ X1 @ X2 )
                                       => ( ( in @ X3 @ X1 )
                                         => ( in @ X3 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X1 @ X2 )
                                         => ( ~ ( in @ X3 @ X2 )
                                           => ~ ( in @ X3 @ X1 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ~ ( in @ X3 @ X2 )
                                             => ~ ( subset @ X1 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ~ ( subset @ X1 @ X2 )
                                             => ( X1 != X2 ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ~ ( in @ X3 @ X2 )
                                                 => ( X1 != X2 ) ) )
                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X1 @ X2 )
                                                   => ( ( subset @ X2 @ X3 )
                                                     => ( subset @ X1 @ X3 ) ) )
                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( subset @ X1 @ X3 )
                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                   => ( sP1
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( subset @ X1 @ X2 )
                                                           => ( ( subset @ X2 @ X1 )
                                                             => ( X1 = X2 ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ( subset @ X1 @ emptyset )
                                                             => ( X1 = emptyset ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( subset @ X2 @ X1 )
                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                 => ( subset @ X2 @ X1 ) )
                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i] :
                                                                      ( ( subset @ X1 @ X2 )
                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X2 )
                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                     => X4 )
                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                       => X4 )
                                                                                     => X4 ) ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( in @ X3 @ X1 )
                                                                                         => ( ( in @ X3 @ X2 )
                                                                                           => ( in @ X3
                                                                                              @ ( dsetconstr @ X1
                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                          ( ( subset @ X3 @ X1 )
                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                           => ( subset @ X3
                                                                                              @ ( dsetconstr @ X1
                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h123,assumption,
    ! [X1: $i > $o] :
      ( ( exu @ X1 )
     => ! [X2: $i,X3: $i] :
          ( ( X1 @ X2 )
         => ( ( X1 @ X3 )
           => ( X2 = X3 ) ) ) ),
    introduced(assumption,[]) ).

thf(h124,assumption,
    ~ ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
            = ( exu @ X2 ) ) )
     => ( ( emptyset = emptyset )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( setadjoin @ X1 @ X3 )
                    = ( setadjoin @ X2 @ X4 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( ( powerset @ X1 )
                  = ( powerset @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( ( setunion @ X1 )
                    = ( setunion @ X2 ) ) )
             => ( ( omega = omega )
               => ( ! [X1: $i > $o] :
                      ( ( exu @ X1 )
                     => ! [X2: $i,X3: $i] :
                          ( ( X1 @ X2 )
                         => ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) ) )
                 => ( ! [X1: $i > $o,X2: $i > $o] :
                        ( ! [X3: $i,X4: $i] :
                            ( ( X3 = X4 )
                           => ( ( X1 @ X3 )
                              = ( X2 @ X4 ) ) )
                       => ( ( exu @ X1 )
                         => ( ( exu @ X2 )
                           => ( ( descr @ X1 )
                              = ( descr @ X2 ) ) ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ! [X3: $i > $o,X4: $i > $o] :
                              ( ! [X5: $i] :
                                  ( ( in @ X5 @ X1 )
                                 => ! [X6: $i] :
                                      ( ( in @ X6 @ X2 )
                                     => ( ( X5 = X6 )
                                       => ( ( X3 @ X5 )
                                          = ( X4 @ X6 ) ) ) ) )
                             => ( ( dsetconstr @ X1 @ X3 )
                                = ( dsetconstr @ X2 @ X4 ) ) ) )
                     => ( sP26
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( subset @ X2 @ X1 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( X1 = X2 )
                               => ( subset @ X1 @ X2 ) )
                           => ( sP26
                             => ( ( !! @ ( subset @ emptyset ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ( in @ X3 @ X1 )
                                       => ( in @ X3 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( subset @ X1 @ X2 )
                                       => ( ~ ( in @ X3 @ X2 )
                                         => ~ ( in @ X3 @ X1 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( ~ ( in @ X3 @ X2 )
                                           => ~ ( subset @ X1 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ~ ( subset @ X1 @ X2 )
                                           => ( X1 != X2 ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( ~ ( in @ X3 @ X2 )
                                               => ( X1 != X2 ) ) )
                                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( subset @ X1 @ X2 )
                                                 => ( ( subset @ X2 @ X3 )
                                                   => ( subset @ X1 @ X3 ) ) )
                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( subset @ X1 @ X3 )
                                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                 => ( sP1
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( subset @ X1 @ X2 )
                                                         => ( ( subset @ X2 @ X1 )
                                                           => ( X1 = X2 ) ) )
                                                     => ( ! [X1: $i] :
                                                            ( ( subset @ X1 @ emptyset )
                                                           => ( X1 = emptyset ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( subset @ X2 @ X1 )
                                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                                               => ( subset @ X2 @ X1 ) )
                                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i] :
                                                                    ( ( subset @ X1 @ X2 )
                                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X2 )
                                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ( ( in @ X3 @ X1 )
                                                                                   => X4 )
                                                                                 => ( ( ( in @ X3 @ X2 )
                                                                                     => X4 )
                                                                                   => X4 ) ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                                   => ( in @ X3 @ X2 ) ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( in @ X3 @ X1 )
                                                                                       => ( ( in @ X3 @ X2 )
                                                                                         => ( in @ X3
                                                                                            @ ( dsetconstr @ X1
                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                                        ( ( subset @ X3 @ X1 )
                                                                                       => ( ( subset @ X3 @ X2 )
                                                                                         => ( subset @ X3
                                                                                            @ ( dsetconstr @ X1
                                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h125,assumption,
    ! [X1: $i > $o,X2: $i > $o] :
      ( ! [X3: $i,X4: $i] :
          ( ( X3 = X4 )
         => ( ( X1 @ X3 )
            = ( X2 @ X4 ) ) )
     => ( ( exu @ X1 )
        = ( exu @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h126,assumption,
    ~ ( ( emptyset = emptyset )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( setadjoin @ X1 @ X3 )
                  = ( setadjoin @ X2 @ X4 ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( ( powerset @ X1 )
                = ( powerset @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( ( setunion @ X1 )
                  = ( setunion @ X2 ) ) )
           => ( ( omega = omega )
             => ( ! [X1: $i > $o] :
                    ( ( exu @ X1 )
                   => ! [X2: $i,X3: $i] :
                        ( ( X1 @ X2 )
                       => ( ( X1 @ X3 )
                         => ( X2 = X3 ) ) ) )
               => ( ! [X1: $i > $o,X2: $i > $o] :
                      ( ! [X3: $i,X4: $i] :
                          ( ( X3 = X4 )
                         => ( ( X1 @ X3 )
                            = ( X2 @ X4 ) ) )
                     => ( ( exu @ X1 )
                       => ( ( exu @ X2 )
                         => ( ( descr @ X1 )
                            = ( descr @ X2 ) ) ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ! [X3: $i > $o,X4: $i > $o] :
                            ( ! [X5: $i] :
                                ( ( in @ X5 @ X1 )
                               => ! [X6: $i] :
                                    ( ( in @ X6 @ X2 )
                                   => ( ( X5 = X6 )
                                     => ( ( X3 @ X5 )
                                        = ( X4 @ X6 ) ) ) ) )
                           => ( ( dsetconstr @ X1 @ X3 )
                              = ( dsetconstr @ X2 @ X4 ) ) ) )
                   => ( sP26
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( subset @ X2 @ X1 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( X1 = X2 )
                             => ( subset @ X1 @ X2 ) )
                         => ( sP26
                           => ( ( !! @ ( subset @ emptyset ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( ( in @ X3 @ X1 )
                                     => ( in @ X3 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ~ ( in @ X3 @ X2 )
                                       => ~ ( in @ X3 @ X1 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ~ ( in @ X3 @ X2 )
                                         => ~ ( subset @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ~ ( subset @ X1 @ X2 )
                                         => ( X1 != X2 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ~ ( in @ X3 @ X2 )
                                             => ( X1 != X2 ) ) )
                                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( ( subset @ X2 @ X3 )
                                                 => ( subset @ X1 @ X3 ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X1 @ X3 )
                                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                               => ( sP1
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( ( subset @ X2 @ X1 )
                                                         => ( X1 = X2 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( subset @ X1 @ emptyset )
                                                         => ( X1 = emptyset ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( subset @ X2 @ X1 )
                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                                             => ( subset @ X2 @ X1 ) )
                                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i] :
                                                                  ( ( subset @ X1 @ X2 )
                                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X2 )
                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ( ( in @ X3 @ X1 )
                                                                                 => X4 )
                                                                               => ( ( ( in @ X3 @ X2 )
                                                                                   => X4 )
                                                                                 => X4 ) ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ~ ( in @ X3 @ X1 )
                                                                                 => ( in @ X3 @ X2 ) ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( in @ X3 @ X1 )
                                                                                     => ( ( in @ X3 @ X2 )
                                                                                       => ( in @ X3
                                                                                          @ ( dsetconstr @ X1
                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                                      ( ( subset @ X3 @ X1 )
                                                                                     => ( ( subset @ X3 @ X2 )
                                                                                       => ( subset @ X3
                                                                                          @ ( dsetconstr @ X1
                                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h127,assumption,
    emptyset = emptyset,
    introduced(assumption,[]) ).

thf(h128,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( setadjoin @ X1 @ X3 )
                = ( setadjoin @ X2 @ X4 ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( ( powerset @ X1 )
              = ( powerset @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( ( setunion @ X1 )
                = ( setunion @ X2 ) ) )
         => ( ( omega = omega )
           => ( ! [X1: $i > $o] :
                  ( ( exu @ X1 )
                 => ! [X2: $i,X3: $i] :
                      ( ( X1 @ X2 )
                     => ( ( X1 @ X3 )
                       => ( X2 = X3 ) ) ) )
             => ( ! [X1: $i > $o,X2: $i > $o] :
                    ( ! [X3: $i,X4: $i] :
                        ( ( X3 = X4 )
                       => ( ( X1 @ X3 )
                          = ( X2 @ X4 ) ) )
                   => ( ( exu @ X1 )
                     => ( ( exu @ X2 )
                       => ( ( descr @ X1 )
                          = ( descr @ X2 ) ) ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ! [X3: $i > $o,X4: $i > $o] :
                          ( ! [X5: $i] :
                              ( ( in @ X5 @ X1 )
                             => ! [X6: $i] :
                                  ( ( in @ X6 @ X2 )
                                 => ( ( X5 = X6 )
                                   => ( ( X3 @ X5 )
                                      = ( X4 @ X6 ) ) ) ) )
                         => ( ( dsetconstr @ X1 @ X3 )
                            = ( dsetconstr @ X2 @ X4 ) ) ) )
                 => ( sP26
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ( subset @ X2 @ X1 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( X1 = X2 )
                           => ( subset @ X1 @ X2 ) )
                       => ( sP26
                         => ( ( !! @ ( subset @ emptyset ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( subset @ X1 @ X2 )
                                 => ( ( in @ X3 @ X1 )
                                   => ( in @ X3 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( ~ ( in @ X3 @ X2 )
                                     => ~ ( in @ X3 @ X1 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( ~ ( in @ X3 @ X2 )
                                       => ~ ( subset @ X1 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ~ ( subset @ X1 @ X2 )
                                       => ( X1 != X2 ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( ~ ( in @ X3 @ X2 )
                                           => ( X1 != X2 ) ) )
                                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( ( subset @ X2 @ X3 )
                                               => ( subset @ X1 @ X3 ) ) )
                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( subset @ X1 @ X3 )
                                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                             => ( sP1
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( ( subset @ X2 @ X1 )
                                                       => ( X1 = X2 ) ) )
                                                 => ( ! [X1: $i] :
                                                        ( ( subset @ X1 @ emptyset )
                                                       => ( X1 = emptyset ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( subset @ X2 @ X1 )
                                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                                           => ( subset @ X2 @ X1 ) )
                                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] :
                                                                ( ( subset @ X1 @ X2 )
                                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X2 )
                                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                           => ( ( ( in @ X3 @ X1 )
                                                                               => X4 )
                                                                             => ( ( ( in @ X3 @ X2 )
                                                                                 => X4 )
                                                                               => X4 ) ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ~ ( in @ X3 @ X1 )
                                                                               => ( in @ X3 @ X2 ) ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X3 @ X1 )
                                                                                   => ( ( in @ X3 @ X2 )
                                                                                     => ( in @ X3
                                                                                        @ ( dsetconstr @ X1
                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( subset @ X3 @ X1 )
                                                                                   => ( ( subset @ X3 @ X2 )
                                                                                     => ( subset @ X3
                                                                                        @ ( dsetconstr @ X1
                                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h129,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ! [X3: $i,X4: $i] :
          ( ( X3 = X4 )
         => ( ( setadjoin @ X1 @ X3 )
            = ( setadjoin @ X2 @ X4 ) ) ) ),
    introduced(assumption,[]) ).

thf(h130,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( powerset @ X1 )
            = ( powerset @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( ( setunion @ X1 )
              = ( setunion @ X2 ) ) )
       => ( ( omega = omega )
         => ( ! [X1: $i > $o] :
                ( ( exu @ X1 )
               => ! [X2: $i,X3: $i] :
                    ( ( X1 @ X2 )
                   => ( ( X1 @ X3 )
                     => ( X2 = X3 ) ) ) )
           => ( ! [X1: $i > $o,X2: $i > $o] :
                  ( ! [X3: $i,X4: $i] :
                      ( ( X3 = X4 )
                     => ( ( X1 @ X3 )
                        = ( X2 @ X4 ) ) )
                 => ( ( exu @ X1 )
                   => ( ( exu @ X2 )
                     => ( ( descr @ X1 )
                        = ( descr @ X2 ) ) ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ! [X3: $i > $o,X4: $i > $o] :
                        ( ! [X5: $i] :
                            ( ( in @ X5 @ X1 )
                           => ! [X6: $i] :
                                ( ( in @ X6 @ X2 )
                               => ( ( X5 = X6 )
                                 => ( ( X3 @ X5 )
                                    = ( X4 @ X6 ) ) ) ) )
                       => ( ( dsetconstr @ X1 @ X3 )
                          = ( dsetconstr @ X2 @ X4 ) ) ) )
               => ( sP26
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ( subset @ X2 @ X1 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( X1 = X2 )
                         => ( subset @ X1 @ X2 ) )
                     => ( sP26
                       => ( ( !! @ ( subset @ emptyset ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( ( in @ X3 @ X1 )
                                 => ( in @ X3 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( subset @ X1 @ X2 )
                                 => ( ~ ( in @ X3 @ X2 )
                                   => ~ ( in @ X3 @ X1 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ~ ( in @ X3 @ X2 )
                                     => ~ ( subset @ X1 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ~ ( subset @ X1 @ X2 )
                                     => ( X1 != X2 ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ~ ( in @ X3 @ X2 )
                                         => ( X1 != X2 ) ) )
                                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( ( subset @ X2 @ X3 )
                                             => ( subset @ X1 @ X3 ) ) )
                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X1 @ X3 )
                                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                           => ( sP1
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( subset @ X1 @ X2 )
                                                   => ( ( subset @ X2 @ X1 )
                                                     => ( X1 = X2 ) ) )
                                               => ( ! [X1: $i] :
                                                      ( ( subset @ X1 @ emptyset )
                                                     => ( X1 = emptyset ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( subset @ X2 @ X1 )
                                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                                         => ( subset @ X2 @ X1 ) )
                                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i] :
                                                              ( ( subset @ X1 @ X2 )
                                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X2 )
                                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                         => ( ( ( in @ X3 @ X1 )
                                                                             => X4 )
                                                                           => ( ( ( in @ X3 @ X2 )
                                                                               => X4 )
                                                                             => X4 ) ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                           => ( ~ ( in @ X3 @ X1 )
                                                                             => ( in @ X3 @ X2 ) ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( in @ X3 @ X1 )
                                                                                 => ( ( in @ X3 @ X2 )
                                                                                   => ( in @ X3
                                                                                      @ ( dsetconstr @ X1
                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                                  ( ( subset @ X3 @ X1 )
                                                                                 => ( ( subset @ X3 @ X2 )
                                                                                   => ( subset @ X3
                                                                                      @ ( dsetconstr @ X1
                                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h131,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ( ( powerset @ X1 )
        = ( powerset @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h132,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( ( setunion @ X1 )
            = ( setunion @ X2 ) ) )
     => ( ( omega = omega )
       => ( ! [X1: $i > $o] :
              ( ( exu @ X1 )
             => ! [X2: $i,X3: $i] :
                  ( ( X1 @ X2 )
                 => ( ( X1 @ X3 )
                   => ( X2 = X3 ) ) ) )
         => ( ! [X1: $i > $o,X2: $i > $o] :
                ( ! [X3: $i,X4: $i] :
                    ( ( X3 = X4 )
                   => ( ( X1 @ X3 )
                      = ( X2 @ X4 ) ) )
               => ( ( exu @ X1 )
                 => ( ( exu @ X2 )
                   => ( ( descr @ X1 )
                      = ( descr @ X2 ) ) ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ! [X3: $i > $o,X4: $i > $o] :
                      ( ! [X5: $i] :
                          ( ( in @ X5 @ X1 )
                         => ! [X6: $i] :
                              ( ( in @ X6 @ X2 )
                             => ( ( X5 = X6 )
                               => ( ( X3 @ X5 )
                                  = ( X4 @ X6 ) ) ) ) )
                     => ( ( dsetconstr @ X1 @ X3 )
                        = ( dsetconstr @ X2 @ X4 ) ) ) )
             => ( sP26
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ( subset @ X2 @ X1 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( X1 = X2 )
                       => ( subset @ X1 @ X2 ) )
                   => ( sP26
                     => ( ( !! @ ( subset @ emptyset ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( subset @ X1 @ X2 )
                             => ( ( in @ X3 @ X1 )
                               => ( in @ X3 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( ~ ( in @ X3 @ X2 )
                                 => ~ ( in @ X3 @ X1 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ~ ( in @ X3 @ X2 )
                                   => ~ ( subset @ X1 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ~ ( subset @ X1 @ X2 )
                                   => ( X1 != X2 ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( ~ ( in @ X3 @ X2 )
                                       => ( X1 != X2 ) ) )
                                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X1 @ X2 )
                                         => ( ( subset @ X2 @ X3 )
                                           => ( subset @ X1 @ X3 ) ) )
                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( subset @ X1 @ X3 )
                                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                         => ( sP1
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( subset @ X1 @ X2 )
                                                 => ( ( subset @ X2 @ X1 )
                                                   => ( X1 = X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ( subset @ X1 @ emptyset )
                                                   => ( X1 = emptyset ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( subset @ X2 @ X1 )
                                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                                       => ( subset @ X2 @ X1 ) )
                                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i] :
                                                            ( ( subset @ X1 @ X2 )
                                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X2 )
                                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                       => ( ( ( in @ X3 @ X1 )
                                                                           => X4 )
                                                                         => ( ( ( in @ X3 @ X2 )
                                                                             => X4 )
                                                                           => X4 ) ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                         => ( ~ ( in @ X3 @ X1 )
                                                                           => ( in @ X3 @ X2 ) ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( in @ X3 @ X1 )
                                                                               => ( ( in @ X3 @ X2 )
                                                                                 => ( in @ X3
                                                                                    @ ( dsetconstr @ X1
                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                                ( ( subset @ X3 @ X1 )
                                                                               => ( ( subset @ X3 @ X2 )
                                                                                 => ( subset @ X3
                                                                                    @ ( dsetconstr @ X1
                                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h133,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ( ( setunion @ X1 )
        = ( setunion @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h134,assumption,
    ~ ( ( omega = omega )
     => ( ! [X1: $i > $o] :
            ( ( exu @ X1 )
           => ! [X2: $i,X3: $i] :
                ( ( X1 @ X2 )
               => ( ( X1 @ X3 )
                 => ( X2 = X3 ) ) ) )
       => ( ! [X1: $i > $o,X2: $i > $o] :
              ( ! [X3: $i,X4: $i] :
                  ( ( X3 = X4 )
                 => ( ( X1 @ X3 )
                    = ( X2 @ X4 ) ) )
             => ( ( exu @ X1 )
               => ( ( exu @ X2 )
                 => ( ( descr @ X1 )
                    = ( descr @ X2 ) ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ! [X3: $i > $o,X4: $i > $o] :
                    ( ! [X5: $i] :
                        ( ( in @ X5 @ X1 )
                       => ! [X6: $i] :
                            ( ( in @ X6 @ X2 )
                           => ( ( X5 = X6 )
                             => ( ( X3 @ X5 )
                                = ( X4 @ X6 ) ) ) ) )
                   => ( ( dsetconstr @ X1 @ X3 )
                      = ( dsetconstr @ X2 @ X4 ) ) ) )
           => ( sP26
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( subset @ X2 @ X1 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( X1 = X2 )
                     => ( subset @ X1 @ X2 ) )
                 => ( sP26
                   => ( ( !! @ ( subset @ emptyset ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( ( in @ X3 @ X1 )
                             => ( in @ X3 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( subset @ X1 @ X2 )
                             => ( ~ ( in @ X3 @ X2 )
                               => ~ ( in @ X3 @ X1 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( ~ ( in @ X3 @ X2 )
                                 => ~ ( subset @ X1 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ~ ( subset @ X1 @ X2 )
                                 => ( X1 != X2 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ~ ( in @ X3 @ X2 )
                                     => ( X1 != X2 ) ) )
                               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( subset @ X1 @ X2 )
                                       => ( ( subset @ X2 @ X3 )
                                         => ( subset @ X1 @ X3 ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( subset @ X1 @ X3 )
                                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                       => ( sP1
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( ( subset @ X2 @ X1 )
                                                 => ( X1 = X2 ) ) )
                                           => ( ! [X1: $i] :
                                                  ( ( subset @ X1 @ emptyset )
                                                 => ( X1 = emptyset ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( subset @ X2 @ X1 )
                                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                                     => ( subset @ X2 @ X1 ) )
                                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i] :
                                                          ( ( subset @ X1 @ X2 )
                                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                     => ( ( ( in @ X3 @ X1 )
                                                                         => X4 )
                                                                       => ( ( ( in @ X3 @ X2 )
                                                                           => X4 )
                                                                         => X4 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                       => ( ~ ( in @ X3 @ X1 )
                                                                         => ( in @ X3 @ X2 ) ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( in @ X3 @ X1 )
                                                                             => ( ( in @ X3 @ X2 )
                                                                               => ( in @ X3
                                                                                  @ ( dsetconstr @ X1
                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                                              ( ( subset @ X3 @ X1 )
                                                                             => ( ( subset @ X3 @ X2 )
                                                                               => ( subset @ X3
                                                                                  @ ( dsetconstr @ X1
                                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h135,assumption,
    omega = omega,
    introduced(assumption,[]) ).

thf(h136,assumption,
    ~ ( ! [X1: $i > $o] :
          ( ( exu @ X1 )
         => ! [X2: $i,X3: $i] :
              ( ( X1 @ X2 )
             => ( ( X1 @ X3 )
               => ( X2 = X3 ) ) ) )
     => ( ! [X1: $i > $o,X2: $i > $o] :
            ( ! [X3: $i,X4: $i] :
                ( ( X3 = X4 )
               => ( ( X1 @ X3 )
                  = ( X2 @ X4 ) ) )
           => ( ( exu @ X1 )
             => ( ( exu @ X2 )
               => ( ( descr @ X1 )
                  = ( descr @ X2 ) ) ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ! [X3: $i > $o,X4: $i > $o] :
                  ( ! [X5: $i] :
                      ( ( in @ X5 @ X1 )
                     => ! [X6: $i] :
                          ( ( in @ X6 @ X2 )
                         => ( ( X5 = X6 )
                           => ( ( X3 @ X5 )
                              = ( X4 @ X6 ) ) ) ) )
                 => ( ( dsetconstr @ X1 @ X3 )
                    = ( dsetconstr @ X2 @ X4 ) ) ) )
         => ( sP26
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( subset @ X2 @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( X1 = X2 )
                   => ( subset @ X1 @ X2 ) )
               => ( sP26
                 => ( ( !! @ ( subset @ emptyset ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( ( in @ X3 @ X1 )
                           => ( in @ X3 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( ~ ( in @ X3 @ X2 )
                             => ~ ( in @ X3 @ X1 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ~ ( in @ X3 @ X2 )
                               => ~ ( subset @ X1 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ~ ( subset @ X1 @ X2 )
                               => ( X1 != X2 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ~ ( in @ X3 @ X2 )
                                   => ( X1 != X2 ) ) )
                             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ( subset @ X2 @ X3 )
                                       => ( subset @ X1 @ X3 ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X1 @ X3 )
                                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                     => ( sP1
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( ( subset @ X2 @ X1 )
                                               => ( X1 = X2 ) ) )
                                         => ( ! [X1: $i] :
                                                ( ( subset @ X1 @ emptyset )
                                               => ( X1 = emptyset ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( subset @ X2 @ X1 )
                                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                                   => ( subset @ X2 @ X1 ) )
                                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i] :
                                                        ( ( subset @ X1 @ X2 )
                                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X2 )
                                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                   => ( ( ( in @ X3 @ X1 )
                                                                       => X4 )
                                                                     => ( ( ( in @ X3 @ X2 )
                                                                         => X4 )
                                                                       => X4 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                     => ( ~ ( in @ X3 @ X1 )
                                                                       => ( in @ X3 @ X2 ) ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( in @ X3 @ X1 )
                                                                           => ( ( in @ X3 @ X2 )
                                                                             => ( in @ X3
                                                                                @ ( dsetconstr @ X1
                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                                            ( ( subset @ X3 @ X1 )
                                                                           => ( ( subset @ X3 @ X2 )
                                                                             => ( subset @ X3
                                                                                @ ( dsetconstr @ X1
                                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h137,assumption,
    ~ ( ! [X1: $i > $o,X2: $i > $o] :
          ( ! [X3: $i,X4: $i] :
              ( ( X3 = X4 )
             => ( ( X1 @ X3 )
                = ( X2 @ X4 ) ) )
         => ( ( exu @ X1 )
           => ( ( exu @ X2 )
             => ( ( descr @ X1 )
                = ( descr @ X2 ) ) ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ! [X3: $i > $o,X4: $i > $o] :
                ( ! [X5: $i] :
                    ( ( in @ X5 @ X1 )
                   => ! [X6: $i] :
                        ( ( in @ X6 @ X2 )
                       => ( ( X5 = X6 )
                         => ( ( X3 @ X5 )
                            = ( X4 @ X6 ) ) ) ) )
               => ( ( dsetconstr @ X1 @ X3 )
                  = ( dsetconstr @ X2 @ X4 ) ) ) )
       => ( sP26
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( subset @ X2 @ X1 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( X1 = X2 )
                 => ( subset @ X1 @ X2 ) )
             => ( sP26
               => ( ( !! @ ( subset @ emptyset ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( subset @ X1 @ X2 )
                       => ( ( in @ X3 @ X1 )
                         => ( in @ X3 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( ~ ( in @ X3 @ X2 )
                           => ~ ( in @ X3 @ X1 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ~ ( in @ X3 @ X2 )
                             => ~ ( subset @ X1 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ~ ( subset @ X1 @ X2 )
                             => ( X1 != X2 ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( ~ ( in @ X3 @ X2 )
                                 => ( X1 != X2 ) ) )
                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( ( subset @ X2 @ X3 )
                                     => ( subset @ X1 @ X3 ) ) )
                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( subset @ X1 @ X3 )
                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                   => ( sP1
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( ( subset @ X2 @ X1 )
                                             => ( X1 = X2 ) ) )
                                       => ( ! [X1: $i] :
                                              ( ( subset @ X1 @ emptyset )
                                             => ( X1 = emptyset ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( subset @ X2 @ X1 )
                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                 => ( subset @ X2 @ X1 ) )
                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                               => ( ! [X1: $i,X2: $i] :
                                                      ( ( subset @ X1 @ X2 )
                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X2 )
                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                 => ( ( ( in @ X3 @ X1 )
                                                                     => X4 )
                                                                   => ( ( ( in @ X3 @ X2 )
                                                                       => X4 )
                                                                     => X4 ) ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                     => ( in @ X3 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( in @ X3 @ X1 )
                                                                         => ( ( in @ X3 @ X2 )
                                                                           => ( in @ X3
                                                                              @ ( dsetconstr @ X1
                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                          ( ( subset @ X3 @ X1 )
                                                                         => ( ( subset @ X3 @ X2 )
                                                                           => ( subset @ X3
                                                                              @ ( dsetconstr @ X1
                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h138,assumption,
    ! [X1: $i > $o,X2: $i > $o] :
      ( ! [X3: $i,X4: $i] :
          ( ( X3 = X4 )
         => ( ( X1 @ X3 )
            = ( X2 @ X4 ) ) )
     => ( ( exu @ X1 )
       => ( ( exu @ X2 )
         => ( ( descr @ X1 )
            = ( descr @ X2 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h139,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ! [X3: $i > $o,X4: $i > $o] :
              ( ! [X5: $i] :
                  ( ( in @ X5 @ X1 )
                 => ! [X6: $i] :
                      ( ( in @ X6 @ X2 )
                     => ( ( X5 = X6 )
                       => ( ( X3 @ X5 )
                          = ( X4 @ X6 ) ) ) ) )
             => ( ( dsetconstr @ X1 @ X3 )
                = ( dsetconstr @ X2 @ X4 ) ) ) )
     => ( sP26
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( subset @ X2 @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( X1 = X2 )
               => ( subset @ X1 @ X2 ) )
           => ( sP26
             => ( ( !! @ ( subset @ emptyset ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( subset @ X1 @ X2 )
                     => ( ( in @ X3 @ X1 )
                       => ( in @ X3 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( subset @ X1 @ X2 )
                       => ( ~ ( in @ X3 @ X2 )
                         => ~ ( in @ X3 @ X1 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ~ ( in @ X3 @ X2 )
                           => ~ ( subset @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ~ ( subset @ X1 @ X2 )
                           => ( X1 != X2 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ~ ( in @ X3 @ X2 )
                               => ( X1 != X2 ) ) )
                         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( subset @ X1 @ X2 )
                                 => ( ( subset @ X2 @ X3 )
                                   => ( subset @ X1 @ X3 ) ) )
                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X1 @ X3 )
                                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                 => ( sP1
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( subset @ X1 @ X2 )
                                         => ( ( subset @ X2 @ X1 )
                                           => ( X1 = X2 ) ) )
                                     => ( ! [X1: $i] :
                                            ( ( subset @ X1 @ emptyset )
                                           => ( X1 = emptyset ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( subset @ X2 @ X1 )
                                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( in @ X2 @ ( powerset @ X1 ) )
                                               => ( subset @ X2 @ X1 ) )
                                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                             => ( ! [X1: $i,X2: $i] :
                                                    ( ( subset @ X1 @ X2 )
                                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X2 )
                                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                               => ( ( ( in @ X3 @ X1 )
                                                                   => X4 )
                                                                 => ( ( ( in @ X3 @ X2 )
                                                                     => X4 )
                                                                   => X4 ) ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                 => ( ~ ( in @ X3 @ X1 )
                                                                   => ( in @ X3 @ X2 ) ) )
                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ X1 )
                                                                       => ( ( in @ X3 @ X2 )
                                                                         => ( in @ X3
                                                                            @ ( dsetconstr @ X1
                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( subset @ X3 @ X1 )
                                                                       => ( ( subset @ X3 @ X2 )
                                                                         => ( subset @ X3
                                                                            @ ( dsetconstr @ X1
                                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h140,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ! [X3: $i > $o,X4: $i > $o] :
          ( ! [X5: $i] :
              ( ( in @ X5 @ X1 )
             => ! [X6: $i] :
                  ( ( in @ X6 @ X2 )
                 => ( ( X5 = X6 )
                   => ( ( X3 @ X5 )
                      = ( X4 @ X6 ) ) ) ) )
         => ( ( dsetconstr @ X1 @ X3 )
            = ( dsetconstr @ X2 @ X4 ) ) ) ),
    introduced(assumption,[]) ).

thf(h141,assumption,
    ~ ( sP26
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( subset @ X2 @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( X1 = X2 )
             => ( subset @ X1 @ X2 ) )
         => ( sP26
           => ( ( !! @ ( subset @ emptyset ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X1 @ X2 )
                   => ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( subset @ X1 @ X2 )
                     => ( ~ ( in @ X3 @ X2 )
                       => ~ ( in @ X3 @ X1 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( ~ ( in @ X3 @ X2 )
                         => ~ ( subset @ X1 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ~ ( subset @ X1 @ X2 )
                         => ( X1 != X2 ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ~ ( in @ X3 @ X2 )
                             => ( X1 != X2 ) ) )
                       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( ( subset @ X2 @ X3 )
                                 => ( subset @ X1 @ X3 ) ) )
                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X1 @ X3 )
                                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                               => ( sP1
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( subset @ X1 @ X2 )
                                       => ( ( subset @ X2 @ X1 )
                                         => ( X1 = X2 ) ) )
                                   => ( ! [X1: $i] :
                                          ( ( subset @ X1 @ emptyset )
                                         => ( X1 = emptyset ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( subset @ X2 @ X1 )
                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( in @ X2 @ ( powerset @ X1 ) )
                                             => ( subset @ X2 @ X1 ) )
                                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ( subset @ X1 @ X2 )
                                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X2 )
                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                             => ( ( ( in @ X3 @ X1 )
                                                                 => X4 )
                                                               => ( ( ( in @ X3 @ X2 )
                                                                   => X4 )
                                                                 => X4 ) ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                               => ( ~ ( in @ X3 @ X1 )
                                                                 => ( in @ X3 @ X2 ) ) )
                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ X1 )
                                                                     => ( ( in @ X3 @ X2 )
                                                                       => ( in @ X3
                                                                          @ ( dsetconstr @ X1
                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( subset @ X3 @ X1 )
                                                                     => ( ( subset @ X3 @ X2 )
                                                                       => ( subset @ X3
                                                                          @ ( dsetconstr @ X1
                                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h142,assumption,
    sP26,
    introduced(assumption,[]) ).

thf(h143,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X2 @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( X1 = X2 )
           => ( subset @ X1 @ X2 ) )
       => ( sP26
         => ( ( !! @ ( subset @ emptyset ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( ( in @ X3 @ X1 )
                   => ( in @ X3 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X1 @ X2 )
                   => ( ~ ( in @ X3 @ X2 )
                     => ~ ( in @ X3 @ X1 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ~ ( in @ X3 @ X2 )
                       => ~ ( subset @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ~ ( subset @ X1 @ X2 )
                       => ( X1 != X2 ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ~ ( in @ X3 @ X2 )
                           => ( X1 != X2 ) ) )
                     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( subset @ X1 @ X2 )
                             => ( ( subset @ X2 @ X3 )
                               => ( subset @ X1 @ X3 ) ) )
                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( subset @ X1 @ X3 )
                                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                             => ( sP1
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( ( subset @ X2 @ X1 )
                                       => ( X1 = X2 ) ) )
                                 => ( ! [X1: $i] :
                                        ( ( subset @ X1 @ emptyset )
                                       => ( X1 = emptyset ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( subset @ X2 @ X1 )
                                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( in @ X2 @ ( powerset @ X1 ) )
                                           => ( subset @ X2 @ X1 ) )
                                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                         => ( ! [X1: $i,X2: $i] :
                                                ( ( subset @ X1 @ X2 )
                                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X2 )
                                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                           => ( ( ( in @ X3 @ X1 )
                                                               => X4 )
                                                             => ( ( ( in @ X3 @ X2 )
                                                                 => X4 )
                                                               => X4 ) ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                             => ( ~ ( in @ X3 @ X1 )
                                                               => ( in @ X3 @ X2 ) ) )
                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X1 )
                                                                   => ( ( in @ X3 @ X2 )
                                                                     => ( in @ X3
                                                                        @ ( dsetconstr @ X1
                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( subset @ X3 @ X1 )
                                                                   => ( ( subset @ X3 @ X2 )
                                                                     => ( subset @ X3
                                                                        @ ( dsetconstr @ X1
                                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h144,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ( subset @ X2 @ X1 ) ),
    introduced(assumption,[]) ).

thf(h145,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( X1 = X2 )
         => ( subset @ X1 @ X2 ) )
     => ( sP26
       => ( ( !! @ ( subset @ emptyset ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( subset @ X1 @ X2 )
               => ( ( in @ X3 @ X1 )
                 => ( in @ X3 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( ~ ( in @ X3 @ X2 )
                   => ~ ( in @ X3 @ X1 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ~ ( in @ X3 @ X2 )
                     => ~ ( subset @ X1 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ~ ( subset @ X1 @ X2 )
                     => ( X1 != X2 ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( ~ ( in @ X3 @ X2 )
                         => ( X1 != X2 ) ) )
                   => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( ( subset @ X2 @ X3 )
                             => ( subset @ X1 @ X3 ) ) )
                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( subset @ X1 @ X3 )
                               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                           => ( sP1
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( ( subset @ X2 @ X1 )
                                     => ( X1 = X2 ) ) )
                               => ( ! [X1: $i] :
                                      ( ( subset @ X1 @ emptyset )
                                     => ( X1 = emptyset ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( subset @ X2 @ X1 )
                                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( in @ X2 @ ( powerset @ X1 ) )
                                         => ( subset @ X2 @ X1 ) )
                                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                       => ( ! [X1: $i,X2: $i] :
                                              ( ( subset @ X1 @ X2 )
                                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                         => ( ( ( in @ X3 @ X1 )
                                                             => X4 )
                                                           => ( ( ( in @ X3 @ X2 )
                                                               => X4 )
                                                             => X4 ) ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                           => ( ~ ( in @ X3 @ X1 )
                                                             => ( in @ X3 @ X2 ) ) )
                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( in @ X3 @ X1 )
                                                                 => ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3
                                                                      @ ( dsetconstr @ X1
                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                                  ( ( subset @ X3 @ X1 )
                                                                 => ( ( subset @ X3 @ X2 )
                                                                   => ( subset @ X3
                                                                      @ ( dsetconstr @ X1
                                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h146,assumption,
    ! [X1: $i,X2: $i] :
      ( ( X1 = X2 )
     => ( subset @ X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h147,assumption,
    ~ ( sP26
     => ( ( !! @ ( subset @ emptyset ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X2 )
             => ( ( in @ X3 @ X1 )
               => ( in @ X3 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( subset @ X1 @ X2 )
               => ( ~ ( in @ X3 @ X2 )
                 => ~ ( in @ X3 @ X1 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ~ ( in @ X3 @ X2 )
                   => ~ ( subset @ X1 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ~ ( subset @ X1 @ X2 )
                   => ( X1 != X2 ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ~ ( in @ X3 @ X2 )
                       => ( X1 != X2 ) ) )
                 => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( ( subset @ X2 @ X3 )
                           => ( subset @ X1 @ X3 ) ) )
                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( subset @ X1 @ X3 )
                             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                         => ( sP1
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( subset @ X1 @ X2 )
                                 => ( ( subset @ X2 @ X1 )
                                   => ( X1 = X2 ) ) )
                             => ( ! [X1: $i] :
                                    ( ( subset @ X1 @ emptyset )
                                   => ( X1 = emptyset ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( subset @ X2 @ X1 )
                                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( in @ X2 @ ( powerset @ X1 ) )
                                       => ( subset @ X2 @ X1 ) )
                                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                     => ( ! [X1: $i,X2: $i] :
                                            ( ( subset @ X1 @ X2 )
                                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X2 )
                                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                       => ( ( ( in @ X3 @ X1 )
                                                           => X4 )
                                                         => ( ( ( in @ X3 @ X2 )
                                                             => X4 )
                                                           => X4 ) ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                         => ( ~ ( in @ X3 @ X1 )
                                                           => ( in @ X3 @ X2 ) ) )
                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( in @ X3 @ X1 )
                                                               => ( ( in @ X3 @ X2 )
                                                                 => ( in @ X3
                                                                    @ ( dsetconstr @ X1
                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                                ( ( subset @ X3 @ X1 )
                                                               => ( ( subset @ X3 @ X2 )
                                                                 => ( subset @ X3
                                                                    @ ( dsetconstr @ X1
                                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h148,assumption,
    ~ ( ( !! @ ( subset @ emptyset ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X2 )
             => ( ~ ( in @ X3 @ X2 )
               => ~ ( in @ X3 @ X1 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ~ ( in @ X3 @ X2 )
                 => ~ ( subset @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ~ ( subset @ X1 @ X2 )
                 => ( X1 != X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ~ ( in @ X3 @ X2 )
                     => ( X1 != X2 ) ) )
               => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( subset @ X1 @ X2 )
                       => ( ( subset @ X2 @ X3 )
                         => ( subset @ X1 @ X3 ) ) )
                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X1 @ X3 )
                           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                       => ( sP1
                         => ( ! [X1: $i,X2: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( ( subset @ X2 @ X1 )
                                 => ( X1 = X2 ) ) )
                           => ( ! [X1: $i] :
                                  ( ( subset @ X1 @ emptyset )
                                 => ( X1 = emptyset ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( subset @ X2 @ X1 )
                                   => ( in @ X2 @ ( powerset @ X1 ) ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( in @ X2 @ ( powerset @ X1 ) )
                                     => ( subset @ X2 @ X1 ) )
                                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                   => ( ! [X1: $i,X2: $i] :
                                          ( ( subset @ X1 @ X2 )
                                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X2 )
                                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                     => ( ( ( in @ X3 @ X1 )
                                                         => X4 )
                                                       => ( ( ( in @ X3 @ X2 )
                                                           => X4 )
                                                         => X4 ) ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                       => ( ~ ( in @ X3 @ X1 )
                                                         => ( in @ X3 @ X2 ) ) )
                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( in @ X3 @ X1 )
                                                             => ( ( in @ X3 @ X2 )
                                                               => ( in @ X3
                                                                  @ ( dsetconstr @ X1
                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                         => ! [X1: $i,X2: $i,X3: $i] :
                                                              ( ( subset @ X3 @ X1 )
                                                             => ( ( subset @ X3 @ X2 )
                                                               => ( subset @ X3
                                                                  @ ( dsetconstr @ X1
                                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h149,assumption,
    !! @ ( subset @ emptyset ),
    introduced(assumption,[]) ).

thf(h150,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ~ ( in @ X3 @ X2 )
             => ~ ( in @ X3 @ X1 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ~ ( in @ X3 @ X2 )
               => ~ ( subset @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ~ ( subset @ X1 @ X2 )
               => ( X1 != X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ~ ( in @ X3 @ X2 )
                   => ( X1 != X2 ) ) )
             => ( ! [X1: $i] : ( subset @ X1 @ X1 )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( subset @ X1 @ X2 )
                     => ( ( subset @ X2 @ X3 )
                       => ( subset @ X1 @ X3 ) ) )
                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X1 @ X3 )
                         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                     => ( sP1
                       => ( ! [X1: $i,X2: $i] :
                              ( ( subset @ X1 @ X2 )
                             => ( ( subset @ X2 @ X1 )
                               => ( X1 = X2 ) ) )
                         => ( ! [X1: $i] :
                                ( ( subset @ X1 @ emptyset )
                               => ( X1 = emptyset ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( subset @ X2 @ X1 )
                                 => ( in @ X2 @ ( powerset @ X1 ) ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( in @ X2 @ ( powerset @ X1 ) )
                                   => ( subset @ X2 @ X1 ) )
                               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                 => ( ! [X1: $i,X2: $i] :
                                        ( ( subset @ X1 @ X2 )
                                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X2 )
                                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                   => ( ( ( in @ X3 @ X1 )
                                                       => X4 )
                                                     => ( ( ( in @ X3 @ X2 )
                                                         => X4 )
                                                       => X4 ) ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                     => ( ~ ( in @ X3 @ X1 )
                                                       => ( in @ X3 @ X2 ) ) )
                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ( in @ X3 @ X2 )
                                                             => ( in @ X3
                                                                @ ( dsetconstr @ X1
                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                       => ! [X1: $i,X2: $i,X3: $i] :
                                                            ( ( subset @ X3 @ X1 )
                                                           => ( ( subset @ X3 @ X2 )
                                                             => ( subset @ X3
                                                                @ ( dsetconstr @ X1
                                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h151,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( subset @ X1 @ X2 )
     => ( ( in @ X3 @ X1 )
       => ( in @ X3 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h152,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( in @ X3 @ X1 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ~ ( in @ X3 @ X2 )
             => ~ ( subset @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ~ ( subset @ X1 @ X2 )
             => ( X1 != X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ~ ( in @ X3 @ X2 )
                 => ( X1 != X2 ) ) )
           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X1 @ X2 )
                   => ( ( subset @ X2 @ X3 )
                     => ( subset @ X1 @ X3 ) ) )
               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( subset @ X1 @ X3 )
                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                   => ( sP1
                     => ( ! [X1: $i,X2: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( ( subset @ X2 @ X1 )
                             => ( X1 = X2 ) ) )
                       => ( ! [X1: $i] :
                              ( ( subset @ X1 @ emptyset )
                             => ( X1 = emptyset ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( subset @ X2 @ X1 )
                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                 => ( subset @ X2 @ X1 ) )
                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                               => ( ! [X1: $i,X2: $i] :
                                      ( ( subset @ X1 @ X2 )
                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X2 )
                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                 => ( ( ( in @ X3 @ X1 )
                                                     => X4 )
                                                   => ( ( ( in @ X3 @ X2 )
                                                       => X4 )
                                                     => X4 ) ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                   => ( ~ ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ X2 ) ) )
                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( in @ X3 @ X1 )
                                                         => ( ( in @ X3 @ X2 )
                                                           => ( in @ X3
                                                              @ ( dsetconstr @ X1
                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                          ( ( subset @ X3 @ X1 )
                                                         => ( ( subset @ X3 @ X2 )
                                                           => ( subset @ X3
                                                              @ ( dsetconstr @ X1
                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h153,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( subset @ X1 @ X2 )
     => ( ~ ( in @ X3 @ X2 )
       => ~ ( in @ X3 @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h154,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ~ ( subset @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ~ ( subset @ X1 @ X2 )
           => ( X1 != X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ~ ( in @ X3 @ X2 )
               => ( X1 != X2 ) ) )
         => ( ! [X1: $i] : ( subset @ X1 @ X1 )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( ( subset @ X2 @ X3 )
                   => ( subset @ X1 @ X3 ) ) )
             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( subset @ X1 @ X3 )
                     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                 => ( sP1
                   => ( ! [X1: $i,X2: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( ( subset @ X2 @ X1 )
                           => ( X1 = X2 ) ) )
                     => ( ! [X1: $i] :
                            ( ( subset @ X1 @ emptyset )
                           => ( X1 = emptyset ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( subset @ X2 @ X1 )
                             => ( in @ X2 @ ( powerset @ X1 ) ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( in @ X2 @ ( powerset @ X1 ) )
                               => ( subset @ X2 @ X1 ) )
                           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                             => ( ! [X1: $i,X2: $i] :
                                    ( ( subset @ X1 @ X2 )
                                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X2 )
                                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                               => ( ( ( in @ X3 @ X1 )
                                                   => X4 )
                                                 => ( ( ( in @ X3 @ X2 )
                                                     => X4 )
                                                   => X4 ) ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                 => ( ~ ( in @ X3 @ X1 )
                                                   => ( in @ X3 @ X2 ) ) )
                                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ( in @ X3 @ X2 )
                                                         => ( in @ X3
                                                            @ ( dsetconstr @ X1
                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                   => ! [X1: $i,X2: $i,X3: $i] :
                                                        ( ( subset @ X3 @ X1 )
                                                       => ( ( subset @ X3 @ X2 )
                                                         => ( subset @ X3
                                                            @ ( dsetconstr @ X1
                                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h155,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ~ ( in @ X3 @ X2 )
       => ~ ( subset @ X1 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h156,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ~ ( subset @ X1 @ X2 )
         => ( X1 != X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ~ ( in @ X3 @ X2 )
             => ( X1 != X2 ) ) )
       => ( ! [X1: $i] : ( subset @ X1 @ X1 )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( subset @ X1 @ X2 )
               => ( ( subset @ X2 @ X3 )
                 => ( subset @ X1 @ X3 ) ) )
           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X1 @ X3 )
                   => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
               => ( sP1
                 => ( ! [X1: $i,X2: $i] :
                        ( ( subset @ X1 @ X2 )
                       => ( ( subset @ X2 @ X1 )
                         => ( X1 = X2 ) ) )
                   => ( ! [X1: $i] :
                          ( ( subset @ X1 @ emptyset )
                         => ( X1 = emptyset ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( subset @ X2 @ X1 )
                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( in @ X2 @ ( powerset @ X1 ) )
                             => ( subset @ X2 @ X1 ) )
                         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                           => ( ! [X1: $i,X2: $i] :
                                  ( ( subset @ X1 @ X2 )
                                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                             => ( ( ( in @ X3 @ X1 )
                                                 => X4 )
                                               => ( ( ( in @ X3 @ X2 )
                                                   => X4 )
                                                 => X4 ) ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                               => ( ~ ( in @ X3 @ X1 )
                                                 => ( in @ X3 @ X2 ) ) )
                                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( ( in @ X3 @ X2 )
                                                       => ( in @ X3
                                                          @ ( dsetconstr @ X1
                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                 => ! [X1: $i,X2: $i,X3: $i] :
                                                      ( ( subset @ X3 @ X1 )
                                                     => ( ( subset @ X3 @ X2 )
                                                       => ( subset @ X3
                                                          @ ( dsetconstr @ X1
                                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h157,assumption,
    ! [X1: $i,X2: $i] :
      ( ~ ( subset @ X1 @ X2 )
     => ( X1 != X2 ) ),
    introduced(assumption,[]) ).

thf(h158,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ~ ( in @ X3 @ X2 )
           => ( X1 != X2 ) ) )
     => ( ! [X1: $i] : ( subset @ X1 @ X1 )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X2 )
             => ( ( subset @ X2 @ X3 )
               => ( subset @ X1 @ X3 ) ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X1 @ X3 )
                 => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
             => ( sP1
               => ( ! [X1: $i,X2: $i] :
                      ( ( subset @ X1 @ X2 )
                     => ( ( subset @ X2 @ X1 )
                       => ( X1 = X2 ) ) )
                 => ( ! [X1: $i] :
                        ( ( subset @ X1 @ emptyset )
                       => ( X1 = emptyset ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( subset @ X2 @ X1 )
                         => ( in @ X2 @ ( powerset @ X1 ) ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( in @ X2 @ ( powerset @ X1 ) )
                           => ( subset @ X2 @ X1 ) )
                       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                         => ( ! [X1: $i,X2: $i] :
                                ( ( subset @ X1 @ X2 )
                               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X2 )
                                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                           => ( ( ( in @ X3 @ X1 )
                                               => X4 )
                                             => ( ( ( in @ X3 @ X2 )
                                                 => X4 )
                                               => X4 ) ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                             => ( ~ ( in @ X3 @ X1 )
                                               => ( in @ X3 @ X2 ) ) )
                                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( in @ X3 @ X1 )
                                                   => ( ( in @ X3 @ X2 )
                                                     => ( in @ X3
                                                        @ ( dsetconstr @ X1
                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                               => ! [X1: $i,X2: $i,X3: $i] :
                                                    ( ( subset @ X3 @ X1 )
                                                   => ( ( subset @ X3 @ X2 )
                                                     => ( subset @ X3
                                                        @ ( dsetconstr @ X1
                                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h159,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ~ ( in @ X3 @ X2 )
       => ( X1 != X2 ) ) ),
    introduced(assumption,[]) ).

thf(h160,assumption,
    ~ ( ! [X1: $i] : ( subset @ X1 @ X1 )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ( subset @ X2 @ X3 )
             => ( subset @ X1 @ X3 ) ) )
       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( subset @ X1 @ X3 )
               => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
           => ( sP1
             => ( ! [X1: $i,X2: $i] :
                    ( ( subset @ X1 @ X2 )
                   => ( ( subset @ X2 @ X1 )
                     => ( X1 = X2 ) ) )
               => ( ! [X1: $i] :
                      ( ( subset @ X1 @ emptyset )
                     => ( X1 = emptyset ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( subset @ X2 @ X1 )
                       => ( in @ X2 @ ( powerset @ X1 ) ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( in @ X2 @ ( powerset @ X1 ) )
                         => ( subset @ X2 @ X1 ) )
                     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                       => ( ! [X1: $i,X2: $i] :
                              ( ( subset @ X1 @ X2 )
                             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X2 )
                                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                         => ( ( ( in @ X3 @ X1 )
                                             => X4 )
                                           => ( ( ( in @ X3 @ X2 )
                                               => X4 )
                                             => X4 ) ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                           => ( ~ ( in @ X3 @ X1 )
                                             => ( in @ X3 @ X2 ) ) )
                                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( in @ X3 @ X1 )
                                                 => ( ( in @ X3 @ X2 )
                                                   => ( in @ X3
                                                      @ ( dsetconstr @ X1
                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                             => ! [X1: $i,X2: $i,X3: $i] :
                                                  ( ( subset @ X3 @ X1 )
                                                 => ( ( subset @ X3 @ X2 )
                                                   => ( subset @ X3
                                                      @ ( dsetconstr @ X1
                                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h161,assumption,
    ! [X1: $i] : ( subset @ X1 @ X1 ),
    introduced(assumption,[]) ).

thf(h162,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X3 )
           => ( subset @ X1 @ X3 ) ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X1 @ X3 )
             => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
         => ( sP1
           => ( ! [X1: $i,X2: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( ( subset @ X2 @ X1 )
                   => ( X1 = X2 ) ) )
             => ( ! [X1: $i] :
                    ( ( subset @ X1 @ emptyset )
                   => ( X1 = emptyset ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( subset @ X2 @ X1 )
                     => ( in @ X2 @ ( powerset @ X1 ) ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( in @ X2 @ ( powerset @ X1 ) )
                       => ( subset @ X2 @ X1 ) )
                   => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                     => ( ! [X1: $i,X2: $i] :
                            ( ( subset @ X1 @ X2 )
                           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                       => ( ( ( in @ X3 @ X1 )
                                           => X4 )
                                         => ( ( ( in @ X3 @ X2 )
                                             => X4 )
                                           => X4 ) ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                         => ( ~ ( in @ X3 @ X1 )
                                           => ( in @ X3 @ X2 ) ) )
                                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( in @ X3 @ X1 )
                                               => ( ( in @ X3 @ X2 )
                                                 => ( in @ X3
                                                    @ ( dsetconstr @ X1
                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                           => ! [X1: $i,X2: $i,X3: $i] :
                                                ( ( subset @ X3 @ X1 )
                                               => ( ( subset @ X3 @ X2 )
                                                 => ( subset @ X3
                                                    @ ( dsetconstr @ X1
                                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h163,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( subset @ X1 @ X2 )
     => ( ( subset @ X2 @ X3 )
       => ( subset @ X1 @ X3 ) ) ),
    introduced(assumption,[]) ).

thf(h164,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X1 @ X3 )
           => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
       => ( sP1
         => ( ! [X1: $i,X2: $i] :
                ( ( subset @ X1 @ X2 )
               => ( ( subset @ X2 @ X1 )
                 => ( X1 = X2 ) ) )
           => ( ! [X1: $i] :
                  ( ( subset @ X1 @ emptyset )
                 => ( X1 = emptyset ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( subset @ X2 @ X1 )
                   => ( in @ X2 @ ( powerset @ X1 ) ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( in @ X2 @ ( powerset @ X1 ) )
                     => ( subset @ X2 @ X1 ) )
                 => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                   => ( ! [X1: $i,X2: $i] :
                          ( ( subset @ X1 @ X2 )
                         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X2 )
                                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                     => ( ( ( in @ X3 @ X1 )
                                         => X4 )
                                       => ( ( ( in @ X3 @ X2 )
                                           => X4 )
                                         => X4 ) ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                       => ( ~ ( in @ X3 @ X1 )
                                         => ( in @ X3 @ X2 ) ) )
                                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                       => ( ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( in @ X3 @ X1 )
                                             => ( ( in @ X3 @ X2 )
                                               => ( in @ X3
                                                  @ ( dsetconstr @ X1
                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                         => ! [X1: $i,X2: $i,X3: $i] :
                                              ( ( subset @ X3 @ X1 )
                                             => ( ( subset @ X3 @ X2 )
                                               => ( subset @ X3
                                                  @ ( dsetconstr @ X1
                                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h165,assumption,
    ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h166,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X1 @ X3 )
         => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
     => ( sP1
       => ( ! [X1: $i,X2: $i] :
              ( ( subset @ X1 @ X2 )
             => ( ( subset @ X2 @ X1 )
               => ( X1 = X2 ) ) )
         => ( ! [X1: $i] :
                ( ( subset @ X1 @ emptyset )
               => ( X1 = emptyset ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( subset @ X2 @ X1 )
                 => ( in @ X2 @ ( powerset @ X1 ) ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( in @ X2 @ ( powerset @ X1 ) )
                   => ( subset @ X2 @ X1 ) )
               => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                 => ( ! [X1: $i,X2: $i] :
                        ( ( subset @ X1 @ X2 )
                       => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X2 )
                                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                   => ( ( ( in @ X3 @ X1 )
                                       => X4 )
                                     => ( ( ( in @ X3 @ X2 )
                                         => X4 )
                                       => X4 ) ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                     => ( ~ ( in @ X3 @ X1 )
                                       => ( in @ X3 @ X2 ) ) )
                                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( in @ X3 @ X1 )
                                           => ( ( in @ X3 @ X2 )
                                             => ( in @ X3
                                                @ ( dsetconstr @ X1
                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                       => ! [X1: $i,X2: $i,X3: $i] :
                                            ( ( subset @ X3 @ X1 )
                                           => ( ( subset @ X3 @ X2 )
                                             => ( subset @ X3
                                                @ ( dsetconstr @ X1
                                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h167,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( subset @ X1 @ X3 )
     => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) ),
    introduced(assumption,[]) ).

thf(h168,assumption,
    ~ ( sP1
     => ( ! [X1: $i,X2: $i] :
            ( ( subset @ X1 @ X2 )
           => ( ( subset @ X2 @ X1 )
             => ( X1 = X2 ) ) )
       => ( ! [X1: $i] :
              ( ( subset @ X1 @ emptyset )
             => ( X1 = emptyset ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( subset @ X2 @ X1 )
               => ( in @ X2 @ ( powerset @ X1 ) ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( in @ X2 @ ( powerset @ X1 ) )
                 => ( subset @ X2 @ X1 ) )
             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
               => ( ! [X1: $i,X2: $i] :
                      ( ( subset @ X1 @ X2 )
                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X2 )
                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                 => ( ( ( in @ X3 @ X1 )
                                     => X4 )
                                   => ( ( ( in @ X3 @ X2 )
                                       => X4 )
                                     => X4 ) ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                   => ( ~ ( in @ X3 @ X1 )
                                     => ( in @ X3 @ X2 ) ) )
                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( in @ X3 @ X1 )
                                         => ( ( in @ X3 @ X2 )
                                           => ( in @ X3
                                              @ ( dsetconstr @ X1
                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                     => ! [X1: $i,X2: $i,X3: $i] :
                                          ( ( subset @ X3 @ X1 )
                                         => ( ( subset @ X3 @ X2 )
                                           => ( subset @ X3
                                              @ ( dsetconstr @ X1
                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h169,assumption,
    sP1,
    introduced(assumption,[]) ).

thf(h170,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( ( subset @ X2 @ X1 )
           => ( X1 = X2 ) ) )
     => ( ! [X1: $i] :
            ( ( subset @ X1 @ emptyset )
           => ( X1 = emptyset ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( subset @ X2 @ X1 )
             => ( in @ X2 @ ( powerset @ X1 ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( powerset @ X1 ) )
               => ( subset @ X2 @ X1 ) )
           => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
             => ( ! [X1: $i,X2: $i] :
                    ( ( subset @ X1 @ X2 )
                   => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
               => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                 => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X2 )
                             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                               => ( ( ( in @ X3 @ X1 )
                                   => X4 )
                                 => ( ( ( in @ X3 @ X2 )
                                     => X4 )
                                   => X4 ) ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                 => ( ~ ( in @ X3 @ X1 )
                                   => ( in @ X3 @ X2 ) ) )
                             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( in @ X3 @ X1 )
                                       => ( ( in @ X3 @ X2 )
                                         => ( in @ X3
                                            @ ( dsetconstr @ X1
                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                   => ! [X1: $i,X2: $i,X3: $i] :
                                        ( ( subset @ X3 @ X1 )
                                       => ( ( subset @ X3 @ X2 )
                                         => ( subset @ X3
                                            @ ( dsetconstr @ X1
                                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h171,assumption,
    ! [X1: $i,X2: $i] :
      ( ( subset @ X1 @ X2 )
     => ( ( subset @ X2 @ X1 )
       => ( X1 = X2 ) ) ),
    introduced(assumption,[]) ).

thf(h172,assumption,
    ~ ( ! [X1: $i] :
          ( ( subset @ X1 @ emptyset )
         => ( X1 = emptyset ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( subset @ X2 @ X1 )
           => ( in @ X2 @ ( powerset @ X1 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( powerset @ X1 ) )
             => ( subset @ X2 @ X1 ) )
         => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
           => ( ! [X1: $i,X2: $i] :
                  ( ( subset @ X1 @ X2 )
                 => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
             => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
               => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                             => ( ( ( in @ X3 @ X1 )
                                 => X4 )
                               => ( ( ( in @ X3 @ X2 )
                                   => X4 )
                                 => X4 ) ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                               => ( ~ ( in @ X3 @ X1 )
                                 => ( in @ X3 @ X2 ) ) )
                           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( in @ X3 @ X1 )
                                     => ( ( in @ X3 @ X2 )
                                       => ( in @ X3
                                          @ ( dsetconstr @ X1
                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                 => ! [X1: $i,X2: $i,X3: $i] :
                                      ( ( subset @ X3 @ X1 )
                                     => ( ( subset @ X3 @ X2 )
                                       => ( subset @ X3
                                          @ ( dsetconstr @ X1
                                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h173,assumption,
    ! [X1: $i] :
      ( ( subset @ X1 @ emptyset )
     => ( X1 = emptyset ) ),
    introduced(assumption,[]) ).

thf(h174,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( subset @ X2 @ X1 )
         => ( in @ X2 @ ( powerset @ X1 ) ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( in @ X2 @ ( powerset @ X1 ) )
           => ( subset @ X2 @ X1 ) )
       => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( subset @ X1 @ X2 )
               => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
           => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
             => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X2 )
                         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                           => ( ( ( in @ X3 @ X1 )
                               => X4 )
                             => ( ( ( in @ X3 @ X2 )
                                 => X4 )
                               => X4 ) ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                             => ( ~ ( in @ X3 @ X1 )
                               => ( in @ X3 @ X2 ) ) )
                         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( in @ X3 @ X1 )
                                   => ( ( in @ X3 @ X2 )
                                     => ( in @ X3
                                        @ ( dsetconstr @ X1
                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                               => ! [X1: $i,X2: $i,X3: $i] :
                                    ( ( subset @ X3 @ X1 )
                                   => ( ( subset @ X3 @ X2 )
                                     => ( subset @ X3
                                        @ ( dsetconstr @ X1
                                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h175,assumption,
    ! [X1: $i,X2: $i] :
      ( ( subset @ X2 @ X1 )
     => ( in @ X2 @ ( powerset @ X1 ) ) ),
    introduced(assumption,[]) ).

thf(h176,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( in @ X2 @ ( powerset @ X1 ) )
         => ( subset @ X2 @ X1 ) )
     => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( subset @ X1 @ X2 )
             => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
         => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
           => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X2 )
                       => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                         => ( ( ( in @ X3 @ X1 )
                             => X4 )
                           => ( ( ( in @ X3 @ X2 )
                               => X4 )
                             => X4 ) ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                           => ( ~ ( in @ X3 @ X1 )
                             => ( in @ X3 @ X2 ) ) )
                       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                           => ( ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( in @ X3 @ X1 )
                                 => ( ( in @ X3 @ X2 )
                                   => ( in @ X3
                                      @ ( dsetconstr @ X1
                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                             => ! [X1: $i,X2: $i,X3: $i] :
                                  ( ( subset @ X3 @ X1 )
                                 => ( ( subset @ X3 @ X2 )
                                   => ( subset @ X3
                                      @ ( dsetconstr @ X1
                                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h177,assumption,
    ! [X1: $i,X2: $i] :
      ( ( in @ X2 @ ( powerset @ X1 ) )
     => ( subset @ X2 @ X1 ) ),
    introduced(assumption,[]) ).

thf(h178,assumption,
    ~ ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
     => ( ! [X1: $i,X2: $i] :
            ( ( subset @ X1 @ X2 )
           => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
       => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
         => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X2 )
                     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                       => ( ( ( in @ X3 @ X1 )
                           => X4 )
                         => ( ( ( in @ X3 @ X2 )
                             => X4 )
                           => X4 ) ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                         => ( ~ ( in @ X3 @ X1 )
                           => ( in @ X3 @ X2 ) ) )
                     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                ( ( in @ X3 @ X1 )
                               => ( ( in @ X3 @ X2 )
                                 => ( in @ X3
                                    @ ( dsetconstr @ X1
                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                           => ! [X1: $i,X2: $i,X3: $i] :
                                ( ( subset @ X3 @ X1 )
                               => ( ( subset @ X3 @ X2 )
                                 => ( subset @ X3
                                    @ ( dsetconstr @ X1
                                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h179,assumption,
    ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) ),
    introduced(assumption,[]) ).

thf(h180,assumption,
    ~ ( ! [X1: $i,X2: $i] :
          ( ( subset @ X1 @ X2 )
         => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
     => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
       => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                     => ( ( ( in @ X3 @ X1 )
                         => X4 )
                       => ( ( ( in @ X3 @ X2 )
                           => X4 )
                         => X4 ) ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                       => ( ~ ( in @ X3 @ X1 )
                         => ( in @ X3 @ X2 ) ) )
                   => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                       => ( ! [X1: $i,X2: $i,X3: $i] :
                              ( ( in @ X3 @ X1 )
                             => ( ( in @ X3 @ X2 )
                               => ( in @ X3
                                  @ ( dsetconstr @ X1
                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                         => ! [X1: $i,X2: $i,X3: $i] :
                              ( ( subset @ X3 @ X1 )
                             => ( ( subset @ X3 @ X2 )
                               => ( subset @ X3
                                  @ ( dsetconstr @ X1
                                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h181,assumption,
    ! [X1: $i,X2: $i] :
      ( ( subset @ X1 @ X2 )
     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h182,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
     => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X2 )
                 => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                   => ( ( ( in @ X3 @ X1 )
                       => X4 )
                     => ( ( ( in @ X3 @ X2 )
                         => X4 )
                       => X4 ) ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                     => ( ~ ( in @ X3 @ X1 )
                       => ( in @ X3 @ X2 ) ) )
                 => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                     => ( ! [X1: $i,X2: $i,X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ( in @ X3 @ X2 )
                             => ( in @ X3
                                @ ( dsetconstr @ X1
                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                       => ! [X1: $i,X2: $i,X3: $i] :
                            ( ( subset @ X3 @ X1 )
                           => ( ( subset @ X3 @ X2 )
                             => ( subset @ X3
                                @ ( dsetconstr @ X1
                                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h183,assumption,
    ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) ),
    introduced(assumption,[]) ).

thf(h184,assumption,
    ~ ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X2 )
               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                 => ( ( ( in @ X3 @ X1 )
                     => X4 )
                   => ( ( ( in @ X3 @ X2 )
                       => X4 )
                     => X4 ) ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                   => ( ~ ( in @ X3 @ X1 )
                     => ( in @ X3 @ X2 ) ) )
               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                   => ( ! [X1: $i,X2: $i,X3: $i] :
                          ( ( in @ X3 @ X1 )
                         => ( ( in @ X3 @ X2 )
                           => ( in @ X3
                              @ ( dsetconstr @ X1
                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                     => ! [X1: $i,X2: $i,X3: $i] :
                          ( ( subset @ X3 @ X1 )
                         => ( ( subset @ X3 @ X2 )
                           => ( subset @ X3
                              @ ( dsetconstr @ X1
                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h185,assumption,
    ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 ),
    introduced(assumption,[]) ).

thf(h186,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X2 )
             => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
               => ( ( ( in @ X3 @ X1 )
                   => X4 )
                 => ( ( ( in @ X3 @ X2 )
                     => X4 )
                   => X4 ) ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                 => ( ~ ( in @ X3 @ X1 )
                   => ( in @ X3 @ X2 ) ) )
             => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                 => ( ! [X1: $i,X2: $i,X3: $i] :
                        ( ( in @ X3 @ X1 )
                       => ( ( in @ X3 @ X2 )
                         => ( in @ X3
                            @ ( dsetconstr @ X1
                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                   => ! [X1: $i,X2: $i,X3: $i] :
                        ( ( subset @ X3 @ X1 )
                       => ( ( subset @ X3 @ X2 )
                         => ( subset @ X3
                            @ ( dsetconstr @ X1
                              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h187,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h188,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X2 )
           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
             => ( ( ( in @ X3 @ X1 )
                 => X4 )
               => ( ( ( in @ X3 @ X2 )
                   => X4 )
                 => X4 ) ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
               => ( ~ ( in @ X3 @ X1 )
                 => ( in @ X3 @ X2 ) ) )
           => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
               => ( ! [X1: $i,X2: $i,X3: $i] :
                      ( ( in @ X3 @ X1 )
                     => ( ( in @ X3 @ X2 )
                       => ( in @ X3
                          @ ( dsetconstr @ X1
                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                 => ! [X1: $i,X2: $i,X3: $i] :
                      ( ( subset @ X3 @ X1 )
                     => ( ( subset @ X3 @ X2 )
                       => ( subset @ X3
                          @ ( dsetconstr @ X1
                            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h189,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X2 )
         => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
           => ( ( ( in @ X3 @ X1 )
               => X4 )
             => ( ( ( in @ X3 @ X2 )
                 => X4 )
               => X4 ) ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
             => ( ~ ( in @ X3 @ X1 )
               => ( in @ X3 @ X2 ) ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
             => ( ! [X1: $i,X2: $i,X3: $i] :
                    ( ( in @ X3 @ X1 )
                   => ( ( in @ X3 @ X2 )
                     => ( in @ X3
                        @ ( dsetconstr @ X1
                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
               => ! [X1: $i,X2: $i,X3: $i] :
                    ( ( subset @ X3 @ X1 )
                   => ( ( subset @ X3 @ X2 )
                     => ( subset @ X3
                        @ ( dsetconstr @ X1
                          @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h190,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X2 )
     => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h191,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ( ( in @ X3 @ X1 )
             => X4 )
           => ( ( ( in @ X3 @ X2 )
               => X4 )
             => X4 ) ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
           => ( ~ ( in @ X3 @ X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
           => ( ! [X1: $i,X2: $i,X3: $i] :
                  ( ( in @ X3 @ X1 )
                 => ( ( in @ X3 @ X2 )
                   => ( in @ X3
                      @ ( dsetconstr @ X1
                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
             => ! [X1: $i,X2: $i,X3: $i] :
                  ( ( subset @ X3 @ X1 )
                 => ( ( subset @ X3 @ X2 )
                   => ( subset @ X3
                      @ ( dsetconstr @ X1
                        @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h192,assumption,
    ! [X1: $i,X2: $i,X3: $i,X4: $o] :
      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
     => ( ( ( in @ X3 @ X1 )
         => X4 )
       => ( ( ( in @ X3 @ X2 )
           => X4 )
         => X4 ) ) ),
    introduced(assumption,[]) ).

thf(h193,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
         => ( ~ ( in @ X3 @ X1 )
           => ( in @ X3 @ X2 ) ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
         => ( ! [X1: $i,X2: $i,X3: $i] :
                ( ( in @ X3 @ X1 )
               => ( ( in @ X3 @ X2 )
                 => ( in @ X3
                    @ ( dsetconstr @ X1
                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
           => ! [X1: $i,X2: $i,X3: $i] :
                ( ( subset @ X3 @ X1 )
               => ( ( subset @ X3 @ X2 )
                 => ( subset @ X3
                    @ ( dsetconstr @ X1
                      @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h194,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
     => ( ~ ( in @ X3 @ X1 )
       => ( in @ X3 @ X2 ) ) ),
    introduced(assumption,[]) ).

thf(h195,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
       => ( ! [X1: $i,X2: $i,X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( ( in @ X3 @ X2 )
               => ( in @ X3
                  @ ( dsetconstr @ X1
                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
         => ! [X1: $i,X2: $i,X3: $i] :
              ( ( subset @ X3 @ X1 )
             => ( ( subset @ X3 @ X2 )
               => ( subset @ X3
                  @ ( dsetconstr @ X1
                    @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h196,assumption,
    ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h197,assumption,
    ~ ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ X1 )
           => ( ( in @ X3 @ X2 )
             => ( in @ X3
                @ ( dsetconstr @ X1
                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
       => ! [X1: $i,X2: $i,X3: $i] :
            ( ( subset @ X3 @ X1 )
           => ( ( subset @ X3 @ X2 )
             => ( subset @ X3
                @ ( dsetconstr @ X1
                  @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h198,assumption,
    ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) ),
    introduced(assumption,[]) ).

thf(h199,assumption,
    ~ ( ! [X1: $i,X2: $i,X3: $i] :
          ( ( in @ X3 @ X1 )
         => ( ( in @ X3 @ X2 )
           => ( in @ X3
              @ ( dsetconstr @ X1
                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
     => ! [X1: $i,X2: $i,X3: $i] :
          ( ( subset @ X3 @ X1 )
         => ( ( subset @ X3 @ X2 )
           => ( subset @ X3
              @ ( dsetconstr @ X1
                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h200,assumption,
    ! [X1: $i,X2: $i,X3: $i] :
      ( ( in @ X3 @ X1 )
     => ( ( in @ X3 @ X2 )
       => ( in @ X3
          @ ( dsetconstr @ X1
            @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h201,assumption,
    ~ ! [X1: $i,X2: $i,X3: $i] :
        ( ( subset @ X3 @ X1 )
       => ( ( subset @ X3 @ X2 )
         => ( subset @ X3
            @ ( dsetconstr @ X1
              @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h202,assumption,
    ~ ! [X1: $i,X2: $i] :
        ( ( subset @ X2 @ eigen__0 )
       => ( ( subset @ X2 @ X1 )
         => ( subset @ X2
            @ ( dsetconstr @ eigen__0
              @ ^ [X3: $i] : ( in @ X3 @ X1 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h203,assumption,
    ~ ! [X1: $i] :
        ( ( subset @ X1 @ eigen__0 )
       => ( ( subset @ X1 @ eigen__1 )
         => ( subset @ X1
            @ ( dsetconstr @ eigen__0
              @ ^ [X2: $i] : ( in @ X2 @ eigen__1 ) ) ) ) ),
    introduced(assumption,[]) ).

thf(h204,assumption,
    ~ ( sP18
     => ( sP2
       => sP20 ) ),
    introduced(assumption,[]) ).

thf(h205,assumption,
    sP18,
    introduced(assumption,[]) ).

thf(h206,assumption,
    ~ ( sP2
     => sP20 ),
    introduced(assumption,[]) ).

thf(h207,assumption,
    sP2,
    introduced(assumption,[]) ).

thf(h208,assumption,
    ~ sP20,
    introduced(assumption,[]) ).

thf(1,plain,
    ( ~ sP27
    | sP17 ),
    inference(all_rule,[status(thm)],[]) ).

thf(2,plain,
    ( ~ sP17
    | sP24 ),
    inference(all_rule,[status(thm)],[]) ).

thf(3,plain,
    ( ~ sP24
    | ~ sP15
    | sP16 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(4,plain,
    ( ~ sP16
    | ~ sP6
    | sP8 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(5,plain,
    ( ~ sP5
    | sP25 ),
    inference(all_rule,[status(thm)],[]) ).

thf(6,plain,
    ( ~ sP25
    | sP14 ),
    inference(all_rule,[status(thm)],[]) ).

thf(7,plain,
    ( ~ sP14
    | ~ sP4
    | sP30 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(8,plain,
    ( ~ sP30
    | ~ sP6
    | sP32 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(9,plain,
    ( ~ sP31
    | sP28 ),
    inference(all_rule,[status(thm)],[]) ).

thf(10,plain,
    ( ~ sP28
    | sP21 ),
    inference(all_rule,[status(thm)],[]) ).

thf(11,plain,
    ( ~ sP21
    | ~ sP32
    | sP12 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(12,plain,
    ( ~ sP12
    | ~ sP8
    | sP11 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(13,plain,
    ( sP9
    | ~ sP11 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(14,plain,
    ( sP9
    | sP6 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(15,plain,
    ( sP13
    | ~ sP9 ),
    inference(eigen_choice_rule,[status(thm),assumptions([h0])],[h0,eigendef_eigen__3]) ).

thf(16,plain,
    ( ~ sP19
    | sP23 ),
    inference(all_rule,[status(thm)],[]) ).

thf(17,plain,
    ( ~ sP23
    | ~ sP13
    | sP20 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(18,plain,
    ( ~ sP26
    | sP19 ),
    inference(all_rule,[status(thm)],[]) ).

thf(19,plain,
    ( ~ sP3
    | sP31 ),
    inference(all_rule,[status(thm)],[]) ).

thf(20,plain,
    ( ~ sP7
    | sP5 ),
    inference(all_rule,[status(thm)],[]) ).

thf(21,plain,
    ( ~ sP7
    | sP27 ),
    inference(all_rule,[status(thm)],[]) ).

thf(22,plain,
    ( ~ sP29
    | sP22 ),
    inference(all_rule,[status(thm)],[]) ).

thf(23,plain,
    ( ~ sP22
    | ~ sP2
    | sP15 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(24,plain,
    ( ~ sP1
    | sP29 ),
    inference(all_rule,[status(thm)],[]) ).

thf(25,plain,
    ( ~ sP29
    | sP10 ),
    inference(all_rule,[status(thm)],[]) ).

thf(26,plain,
    ( ~ sP10
    | ~ sP18
    | sP4 ),
    inference(prop_rule,[status(thm)],[]) ).

thf(27,plain,
    $false,
    inference(prop_unsat,[status(thm),assumptions([h207,h208,h205,h206,h204,h203,h202,h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0])],[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,h26,h72,h142,h169,h205,h207,h208]) ).

thf(28,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h205,h206,h204,h203,h202,h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h207,h208])],[h206,27,h207,h208]) ).

thf(29,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h204,h203,h202,h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h205,h206])],[h204,28,h205,h206]) ).

thf(30,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h203,h202,h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negall(discharge,[h204]),tab_negall(eigenvar,eigen__2)],[h203,29,h204]) ).

thf(31,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h202,h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negall(discharge,[h203]),tab_negall(eigenvar,eigen__1)],[h202,30,h203]) ).

thf(32,plain,
    $false,
    inference(tab_negall,[status(thm),assumptions([h200,h201,h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negall(discharge,[h202]),tab_negall(eigenvar,eigen__0)],[h201,31,h202]) ).

thf(33,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h198,h199,h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h200,h201])],[h199,32,h200,h201]) ).

thf(34,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h196,h197,h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h198,h199])],[h197,33,h198,h199]) ).

thf(35,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h194,h195,h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h196,h197])],[h195,34,h196,h197]) ).

thf(36,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h192,h193,h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h194,h195])],[h193,35,h194,h195]) ).

thf(37,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h190,h191,h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h192,h193])],[h191,36,h192,h193]) ).

thf(38,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h95,h189,h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h190,h191])],[h189,37,h190,h191]) ).

thf(39,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h187,h188,h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h95,h189])],[h188,38,h95,h189]) ).

thf(40,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h185,h186,h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h187,h188])],[h186,39,h187,h188]) ).

thf(41,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h183,h184,h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h185,h186])],[h184,40,h185,h186]) ).

thf(42,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h181,h182,h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h183,h184])],[h182,41,h183,h184]) ).

thf(43,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h179,h180,h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h181,h182])],[h180,42,h181,h182]) ).

thf(44,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h177,h178,h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h179,h180])],[h178,43,h179,h180]) ).

thf(45,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h175,h176,h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h177,h178])],[h176,44,h177,h178]) ).

thf(46,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h173,h174,h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h175,h176])],[h174,45,h175,h176]) ).

thf(47,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h171,h172,h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h173,h174])],[h172,46,h173,h174]) ).

thf(48,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h169,h170,h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h171,h172])],[h170,47,h171,h172]) ).

thf(49,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h167,h168,h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h169,h170])],[h168,48,h169,h170]) ).

thf(50,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h165,h166,h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h167,h168])],[h166,49,h167,h168]) ).

thf(51,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h163,h164,h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h165,h166])],[h164,50,h165,h166]) ).

thf(52,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h161,h162,h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h163,h164])],[h162,51,h163,h164]) ).

thf(53,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h159,h160,h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h161,h162])],[h160,52,h161,h162]) ).

thf(54,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h157,h158,h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h159,h160])],[h158,53,h159,h160]) ).

thf(55,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h155,h156,h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h157,h158])],[h156,54,h157,h158]) ).

thf(56,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h153,h154,h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h155,h156])],[h154,55,h155,h156]) ).

thf(57,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h151,h152,h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h153,h154])],[h152,56,h153,h154]) ).

thf(58,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h149,h150,h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h151,h152])],[h150,57,h151,h152]) ).

thf(59,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h142,h148,h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h149,h150])],[h148,58,h149,h150]) ).

thf(60,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h146,h147,h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h142,h148])],[h147,59,h142,h148]) ).

thf(61,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h144,h145,h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h146,h147])],[h145,60,h146,h147]) ).

thf(62,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h142,h143,h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h144,h145])],[h143,61,h144,h145]) ).

thf(63,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h140,h141,h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h142,h143])],[h141,62,h142,h143]) ).

thf(64,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h138,h139,h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h140,h141])],[h139,63,h140,h141]) ).

thf(65,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h123,h137,h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h138,h139])],[h137,64,h138,h139]) ).

thf(66,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h135,h136,h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h123,h137])],[h136,65,h123,h137]) ).

thf(67,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h133,h134,h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h135,h136])],[h134,66,h135,h136]) ).

thf(68,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h131,h132,h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h133,h134])],[h132,67,h133,h134]) ).

thf(69,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h129,h130,h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h131,h132])],[h130,68,h131,h132]) ).

thf(70,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h127,h128,h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h129,h130])],[h128,69,h129,h130]) ).

thf(71,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h125,h126,h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h127,h128])],[h126,70,h127,h128]) ).

thf(72,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h123,h124,h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h125,h126])],[h124,71,h125,h126]) ).

thf(73,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h121,h122,h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h123,h124])],[h122,72,h123,h124]) ).

thf(74,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h119,h120,h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h121,h122])],[h120,73,h121,h122]) ).

thf(75,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h117,h118,h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h119,h120])],[h118,74,h119,h120]) ).

thf(76,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h115,h116,h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h117,h118])],[h116,75,h117,h118]) ).

thf(77,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h113,h114,h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h115,h116])],[h114,76,h115,h116]) ).

thf(78,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h101,h112,h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h113,h114])],[h112,77,h113,h114]) ).

thf(79,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h103,h111,h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h101,h112])],[h111,78,h101,h112]) ).

thf(80,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h109,h110,h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h103,h111])],[h110,79,h103,h111]) ).

thf(81,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h107,h108,h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h109,h110])],[h108,80,h109,h110]) ).

thf(82,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h101,h106,h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h107,h108])],[h106,81,h107,h108]) ).

thf(83,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h103,h105,h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h101,h106])],[h105,82,h101,h106]) ).

thf(84,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h103,h104,h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h103,h105])],[h104,83,h103,h105]) ).

thf(85,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h101,h102,h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h103,h104])],[h102,84,h103,h104]) ).

thf(86,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h99,h100,h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h101,h102])],[h100,85,h101,h102]) ).

thf(87,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h97,h98,h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h99,h100])],[h98,86,h99,h100]) ).

thf(88,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h95,h96,h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h97,h98])],[h96,87,h97,h98]) ).

thf(89,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h93,h94,h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h95,h96])],[h94,88,h95,h96]) ).

thf(90,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h91,h92,h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h93,h94])],[h92,89,h93,h94]) ).

thf(91,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h89,h90,h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h91,h92])],[h90,90,h91,h92]) ).

thf(92,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h87,h88,h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h89,h90])],[h88,91,h89,h90]) ).

thf(93,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h85,h86,h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h87,h88])],[h86,92,h87,h88]) ).

thf(94,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h83,h84,h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h85,h86])],[h84,93,h85,h86]) ).

thf(95,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h49,h82,h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h83,h84])],[h82,94,h83,h84]) ).

thf(96,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h80,h81,h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h49,h82])],[h81,95,h49,h82]) ).

thf(97,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h78,h79,h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h80,h81])],[h79,96,h80,h81]) ).

thf(98,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h76,h77,h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h78,h79])],[h77,97,h78,h79]) ).

thf(99,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h74,h75,h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h76,h77])],[h75,98,h76,h77]) ).

thf(100,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h72,h73,h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h74,h75])],[h73,99,h74,h75]) ).

thf(101,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h69,h71,h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h72,h73])],[h71,100,h72,h73]) ).

thf(102,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h69,h70,h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h69,h71])],[h70,101,h69,h71]) ).

thf(103,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h67,h68,h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h69,h70])],[h68,102,h69,h70]) ).

thf(104,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h65,h66,h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h67,h68])],[h66,103,h67,h68]) ).

thf(105,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h63,h64,h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h65,h66])],[h64,104,h65,h66]) ).

thf(106,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h61,h62,h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h63,h64])],[h62,105,h63,h64]) ).

thf(107,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h59,h60,h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h61,h62])],[h60,106,h61,h62]) ).

thf(108,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h57,h58,h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h59,h60])],[h58,107,h59,h60]) ).

thf(109,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h55,h56,h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h57,h58])],[h56,108,h57,h58]) ).

thf(110,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h53,h54,h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h55,h56])],[h54,109,h55,h56]) ).

thf(111,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h51,h52,h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h53,h54])],[h52,110,h53,h54]) ).

thf(112,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h49,h50,h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h51,h52])],[h50,111,h51,h52]) ).

thf(113,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h47,h48,h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h49,h50])],[h48,112,h49,h50]) ).

thf(114,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h44,h46,h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h47,h48])],[h46,113,h47,h48]) ).

thf(115,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h44,h45,h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h44,h46])],[h45,114,h44,h46]) ).

thf(116,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h42,h43,h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h44,h45])],[h43,115,h44,h45]) ).

thf(117,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h40,h41,h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h42,h43])],[h41,116,h42,h43]) ).

thf(118,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h39,h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h40,h41])],[h39,117,h40,h41]) ).

thf(119,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h38,h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h4,h39])],[h38,118,h4,h39]) ).

thf(120,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h36,h37,h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h4,h38])],[h37,119,h4,h38]) ).

thf(121,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h34,h35,h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h36,h37])],[h35,120,h36,h37]) ).

thf(122,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h32,h33,h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h34,h35])],[h33,121,h34,h35]) ).

thf(123,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h30,h31,h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h32,h33])],[h31,122,h32,h33]) ).

thf(124,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h28,h29,h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h30,h31])],[h29,123,h30,h31]) ).

thf(125,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h26,h27,h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h28,h29])],[h27,124,h28,h29]) ).

thf(126,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h24,h25,h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h26,h27])],[h25,125,h26,h27]) ).

thf(127,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h22,h23,h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h24,h25])],[h23,126,h24,h25]) ).

thf(128,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h20,h21,h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h22,h23])],[h21,127,h22,h23]) ).

thf(129,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h18,h19,h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h20,h21])],[h19,128,h20,h21]) ).

thf(130,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h16,h17,h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h18,h19])],[h17,129,h18,h19]) ).

thf(131,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h14,h15,h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h16,h17])],[h15,130,h16,h17]) ).

thf(132,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h12,h13,h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h14,h15])],[h13,131,h14,h15]) ).

thf(133,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h10,h11,h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h12,h13])],[h11,132,h12,h13]) ).

thf(134,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h8,h9,h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h10,h11])],[h9,133,h10,h11]) ).

thf(135,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h6,h7,h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h8,h9])],[h7,134,h8,h9]) ).

thf(136,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h4,h5,h2,h3,h1,h0]),tab_negimp(discharge,[h6,h7])],[h5,135,h6,h7]) ).

thf(137,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h2,h3,h1,h0]),tab_negimp(discharge,[h4,h5])],[h3,136,h4,h5]) ).

thf(138,plain,
    $false,
    inference(tab_negimp,[status(thm),assumptions([h1,h0]),tab_negimp(discharge,[h2,h3])],[h1,137,h2,h3]) ).

thf(139,plain,
    $false,
    inference(eigenvar_choice,[status(thm),assumptions([h1]),eigenvar_choice(discharge,[h0])],[138,h0]) ).

thf(0,theorem,
    ( ! [X1: $i,X2: $i] :
        ( ! [X3: $i] :
            ( ( in @ X3 @ X1 )
            = ( in @ X3 @ X2 ) )
       => ( X1 = X2 ) )
   => ( ! [X1: $i] :
          ~ ( in @ X1 @ emptyset )
     => ( ! [X1: $i,X2: $i,X3: $i] :
            ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
            = ( ( X3 != X1 )
             => ( in @ X3 @ X2 ) ) )
       => ( ! [X1: $i,X2: $i] :
              ( ( in @ X2 @ ( powerset @ X1 ) )
              = ( ! [X3: $i] :
                    ( ( in @ X3 @ X2 )
                   => ( in @ X3 @ X1 ) ) ) )
         => ( ! [X1: $i,X2: $i] :
                ( ( in @ X2 @ ( setunion @ X1 ) )
                = ( ~ ! [X3: $i] :
                        ( ( in @ X2 @ X3 )
                       => ~ ( in @ X3 @ X1 ) ) ) )
           => ( ( in @ emptyset @ omega )
             => ( ! [X1: $i] :
                    ( ( in @ X1 @ omega )
                   => ( in @ ( setadjoin @ X1 @ X1 ) @ omega ) )
               => ( ! [X1: $i] :
                      ( ~ ( ( in @ emptyset @ X1 )
                         => ~ ! [X2: $i] :
                                ( ~ ( ( in @ X2 @ omega )
                                   => ~ ( in @ X2 @ X1 ) )
                               => ( in @ ( setadjoin @ X2 @ X2 ) @ X1 ) ) )
                     => ! [X2: $i] :
                          ( ( in @ X2 @ omega )
                         => ( in @ X2 @ X1 ) ) )
                 => ( ! [X1: $i > $i > $o,X2: $i] :
                        ( ! [X3: $i] :
                            ( ( in @ X3 @ X2 )
                           => ( exu @ ( X1 @ X3 ) ) )
                       => ~ ! [X3: $i] :
                              ~ ! [X4: $i] :
                                  ( ( in @ X4 @ X3 )
                                  = ( ~ ! [X5: $i] :
                                          ( ( in @ X5 @ X2 )
                                         => ~ ( X1 @ X5 @ X4 ) ) ) ) )
                   => ( ! [X1: $i] :
                          ( ~ ! [X2: $i] :
                                ~ ( in @ X2 @ X1 )
                         => ~ ! [X2: $i] :
                                ( ( in @ X2 @ X1 )
                               => ~ ! [X3: $i] :
                                      ( ( in @ X3 @ X2 )
                                     => ~ ( in @ X3 @ X1 ) ) ) )
                     => ( ! [X1: $i] :
                            ~ ! [X2: $i] :
                                ( ~ ( ~ ( ! [X3: $i] :
                                            ( ( in @ X3 @ X2 )
                                           => ! [X4: $i] :
                                                ( ( in @ X4 @ X3 )
                                               => ( in @ X4 @ X1 ) ) )
                                       => ~ ! [X3: $i,X4: $i] :
                                              ( ~ ( ( in @ X3 @ X1 )
                                                 => ~ ( in @ X4 @ X1 ) )
                                             => ( ! [X5: $i] :
                                                    ( ( in @ X5 @ X2 )
                                                   => ( ( in @ X3 @ X5 )
                                                      = ( in @ X4 @ X5 ) ) )
                                               => ( X3 = X4 ) ) ) )
                                   => ~ ! [X3: $i,X4: $i] :
                                          ( ~ ( ( in @ X3 @ X2 )
                                             => ~ ( in @ X4 @ X2 ) )
                                         => ( ~ ! [X5: $i] :
                                                  ( ( in @ X5 @ X3 )
                                                 => ( in @ X5 @ X4 ) )
                                           => ! [X5: $i] :
                                                ( ( in @ X5 @ X4 )
                                               => ( in @ X5 @ X3 ) ) ) ) )
                               => ~ ! [X3: $i] :
                                      ( ~ ( ! [X4: $i] :
                                              ( ( in @ X4 @ X3 )
                                             => ( in @ X4 @ X1 ) )
                                         => ! [X4: $i] :
                                              ~ ( in @ X4 @ X3 ) )
                                     => ~ ! [X4: $i,X5: $i] :
                                            ( ~ ( ~ ( ( in @ X4 @ X2 )
                                                   => ~ ( in @ X5 @ X3 ) )
                                               => ~ ! [X6: $i] :
                                                      ( ( in @ X6 @ X4 )
                                                     => ~ ( in @ X6 @ X3 ) ) )
                                           => ~ ! [X6: $i] :
                                                  ( ( in @ X6 @ X2 )
                                                 => ( ~ ! [X7: $i] :
                                                          ( ( in @ X7 @ X6 )
                                                         => ( in @ X7 @ X4 ) )
                                                   => ( in @ X5 @ X6 ) ) ) ) ) )
                       => ( ! [X1: $i > $o] :
                              ( ( exu @ X1 )
                             => ( X1 @ ( descr @ X1 ) ) )
                         => ( sP3
                           => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                  ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                 => ( in @ X3 @ X1 ) )
                             => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                    ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                   => ( X2 @ X3 ) )
                               => ( ! [X1: $i > $o] :
                                      ( ( exu @ X1 )
                                     => ~ ! [X2: $i] :
                                            ( ( X1 @ X2 )
                                           => ~ ! [X3: $i] :
                                                  ( ( X1 @ X3 )
                                                 => ( X2 = X3 ) ) ) )
                                 => ( ! [X1: $o,X2: $i] :
                                        ( ( in @ X2 @ ( prop2set @ X1 ) )
                                       => X1 )
                                   => ( ! [X1: $i] :
                                          ( ( in @ X1 @ emptyset )
                                         => ! [X2: $o] : X2 )
                                     => ( ! [X1: $i] :
                                            ~ ( in @ X1 @ emptyset )
                                       => ( ! [X1: $i] :
                                              ~ ( in @ X1 @ emptyset )
                                         => ( ! [X1: $i > $o] :
                                                ( ( exu @ X1 )
                                               => ~ ! [X2: $i] :
                                                      ~ ( X1 @ X2 ) )
                                           => ( ! [X1: $i,X2: $i] :
                                                  ( ! [X3: $i] :
                                                      ( ( in @ X3 @ X1 )
                                                     => ( in @ X3 @ X2 ) )
                                                 => ( ! [X3: $i] :
                                                        ( ( in @ X3 @ X2 )
                                                       => ( in @ X3 @ X1 ) )
                                                   => ( X1 = X2 ) ) )
                                             => ( ! [X1: $i] :
                                                    ( ! [X2: $i] :
                                                        ~ ( in @ X2 @ X1 )
                                                   => ( X1 = emptyset ) )
                                               => ( ! [X1: $i] :
                                                      ( ! [X2: $i] :
                                                          ~ ( in @ X2 @ X1 )
                                                     => ( X1 = emptyset ) )
                                                 => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                        ( ( in @ X3 @ X1 )
                                                       => ( ( in @ X3 @ ( dsetconstr @ X1 @ X2 ) )
                                                          = ( X2 @ X3 ) ) )
                                                   => ( ! [X1: $i] :
                                                          ( ( nonempty @ X1 )
                                                         => ~ ! [X2: $i] :
                                                                ~ ( in @ X2 @ X1 ) )
                                                     => ( ! [X1: $i,X2: $i > $o,X3: $i] :
                                                            ( ( in @ X3 @ X1 )
                                                           => ( ( X2 @ X3 )
                                                             => ( nonempty @ ( dsetconstr @ X1 @ X2 ) ) ) )
                                                       => ( ! [X1: $i] :
                                                              ( ~ ! [X2: $i] :
                                                                    ~ ( in @ X2 @ X1 )
                                                             => ( nonempty @ X1 ) )
                                                         => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ X2 ) )
                                                           => ( ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) )
                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                    ( ( in @ X3 @ X2 )
                                                                   => ( in @ X3 @ ( setadjoin @ X1 @ X2 ) ) )
                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                     => ! [X4: $o] :
                                                                          ( ( ( X3 = X1 )
                                                                           => X4 )
                                                                         => ( ( ( in @ X3 @ X2 )
                                                                             => X4 )
                                                                           => X4 ) ) )
                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                        ( ( in @ X3 @ ( setadjoin @ X1 @ X2 ) )
                                                                       => ( ( X3 != X1 )
                                                                         => ( in @ X3 @ X2 ) ) )
                                                                   => ( ! [X1: $i] :
                                                                          ( ( dsetconstr @ X1
                                                                            @ ^ [X2: $i] : ~ $false )
                                                                          = X1 )
                                                                     => ( ! [X1: $i,X2: $i] :
                                                                            ( ! [X3: $i] :
                                                                                ( ( in @ X3 @ X2 )
                                                                               => ( in @ X3 @ X1 ) )
                                                                           => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                       => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                         => ( ! [X1: $i] : ( in @ emptyset @ ( powerset @ X1 ) )
                                                                           => ( sP7
                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                    ( ( in @ X2 @ X3 )
                                                                                   => ( ( in @ X3 @ X1 )
                                                                                     => ( in @ X2 @ ( setunion @ X1 ) ) ) )
                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                      ( ( in @ X2 @ ( setunion @ X1 ) )
                                                                                     => ! [X3: $o] :
                                                                                          ( ! [X4: $i] :
                                                                                              ( ( in @ X2 @ X4 )
                                                                                             => ( ( in @ X4 @ X1 )
                                                                                               => X3 ) )
                                                                                         => X3 ) )
                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                        ( ( in @ X2 @ X1 )
                                                                                       => ( in @ X2 @ ( powerset @ ( setunion @ X1 ) ) ) )
                                                                                   => ( ! [X1: $i > $o] :
                                                                                          ( ( exu @ X1 )
                                                                                         => ~ ! [X2: $i] :
                                                                                                ~ ! [X3: $i] :
                                                                                                    ( ( X1 @ X3 )
                                                                                                    = ( X3 = X2 ) ) )
                                                                                     => ( ! [X1: $i] :
                                                                                            ( ( nonempty @ X1 )
                                                                                           => ~ ! [X2: $i] :
                                                                                                  ~ ( in @ X2 @ X1 ) )
                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                              ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                             => ( X1 = X2 ) )
                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                ( ( X1 != X2 )
                                                                                               => ~ ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                  ( ( X1 = X2 )
                                                                                                 => ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                    ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
                                                                                                   => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
                                                                                               => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                      ( ( in @ X3 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ( X3 != X1 )
                                                                                                       => ( X3 = X2 ) ) )
                                                                                                 => ( ! [X1: $i,X2: $i] : ( in @ X1 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                   => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                            ( ~ ! [X3: $i] :
                                                                                                                  ( ( in @ X3 @ X1 )
                                                                                                                 => ~ ( X2 @ X3 ) )
                                                                                                           => ( ( dsetconstr @ X1 @ X2 )
                                                                                                             != emptyset ) )
                                                                                                       => ( ! [X1: $i > $o,X2: $i] :
                                                                                                              ( ( in @ X2 @ emptyset )
                                                                                                             => ( X1 @ X2 ) )
                                                                                                         => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                ( ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) )
                                                                                                               => ~ ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ( X2 @ X3 ) ) )
                                                                                                           => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                  ( ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) )
                                                                                                                 => ! [X3: $i] :
                                                                                                                      ( ( in @ X3 @ X1 )
                                                                                                                     => ~ ( X2 @ X3 ) ) )
                                                                                                             => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                    ( ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) )
                                                                                                                   => ! [X3: $i] :
                                                                                                                        ( ( in @ X3 @ X1 )
                                                                                                                       => ~ ( X2 @ X3 ) ) )
                                                                                                               => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                      ( ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) )
                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                           => ( X2 @ X3 ) ) )
                                                                                                                 => ( ! [X1: $o] :
                                                                                                                        ( X1
                                                                                                                       => ( in @ emptyset @ ( prop2set @ X1 ) ) )
                                                                                                                   => ( ! [X1: $o] :
                                                                                                                          ( X1
                                                                                                                         => ( set2prop @ ( prop2set @ X1 ) ) )
                                                                                                                     => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                            ( ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) )
                                                                                                                           => ! [X3: $i] :
                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                               => ~ ( X2 @ X3 ) ) )
                                                                                                                       => ( ! [X1: $i,X2: $i > $o] :
                                                                                                                              ( ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) )
                                                                                                                             => ~ ! [X3: $i] :
                                                                                                                                    ( ( in @ X3 @ X1 )
                                                                                                                                   => ( X2 @ X3 ) ) )
                                                                                                                         => ( ! [X1: $i > $o] :
                                                                                                                                ( ~ ! [X2: $i] :
                                                                                                                                      ( ( X1 @ X2 )
                                                                                                                                     => ~ ! [X3: $i] :
                                                                                                                                            ( ( X1 @ X3 )
                                                                                                                                           => ( X2 = X3 ) ) )
                                                                                                                               => ( exu @ X1 ) )
                                                                                                                           => ( ! [X1: $i > $o] :
                                                                                                                                  ( ~ ! [X2: $i] :
                                                                                                                                        ~ ( X1 @ X2 )
                                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X1 @ X2 )
                                                                                                                                       => ( ( X1 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                                   => ( exu @ X1 ) ) )
                                                                                                                             => ( ! [X1: $i > $o] :
                                                                                                                                    ( ~ ! [X2: $i] :
                                                                                                                                          ~ ! [X3: $i] :
                                                                                                                                              ( ( X1 @ X3 )
                                                                                                                                              = ( X3 = X2 ) )
                                                                                                                                   => ( exu @ X1 ) )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X1 = X2 )
                                                                                                                                     => ! [X3: $i,X4: $i] :
                                                                                                                                          ( ( X3 = X4 )
                                                                                                                                         => ( ( in @ X3 @ X1 )
                                                                                                                                           => ( in @ X4 @ X2 ) ) ) )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X1 = X2 )
                                                                                                                                       => ! [X3: $i,X4: $i] :
                                                                                                                                            ( ( X3 = X4 )
                                                                                                                                           => ( ( in @ X3 @ X1 )
                                                                                                                                              = ( in @ X4 @ X2 ) ) ) )
                                                                                                                                   => ( ! [X1: $i > $o] :
                                                                                                                                          ( ( exu @ X1 )
                                                                                                                                         => ! [X2: $i,X3: $i] :
                                                                                                                                              ( ( X1 @ X2 )
                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                               => ( X2 = X3 ) ) ) )
                                                                                                                                     => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                            ( ! [X3: $i,X4: $i] :
                                                                                                                                                ( ( X3 = X4 )
                                                                                                                                               => ( ( X1 @ X3 )
                                                                                                                                                  = ( X2 @ X4 ) ) )
                                                                                                                                           => ( ( exu @ X1 )
                                                                                                                                              = ( exu @ X2 ) ) )
                                                                                                                                       => ( ( emptyset = emptyset )
                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ! [X3: $i,X4: $i] :
                                                                                                                                                    ( ( X3 = X4 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                      = ( setadjoin @ X2 @ X4 ) ) ) )
                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                 => ( ( powerset @ X1 )
                                                                                                                                                    = ( powerset @ X2 ) ) )
                                                                                                                                             => ( ! [X1: $i,X2: $i] :
                                                                                                                                                    ( ( X1 = X2 )
                                                                                                                                                   => ( ( setunion @ X1 )
                                                                                                                                                      = ( setunion @ X2 ) ) )
                                                                                                                                               => ( ( omega = omega )
                                                                                                                                                 => ( ! [X1: $i > $o] :
                                                                                                                                                        ( ( exu @ X1 )
                                                                                                                                                       => ! [X2: $i,X3: $i] :
                                                                                                                                                            ( ( X1 @ X2 )
                                                                                                                                                           => ( ( X1 @ X3 )
                                                                                                                                                             => ( X2 = X3 ) ) ) )
                                                                                                                                                   => ( ! [X1: $i > $o,X2: $i > $o] :
                                                                                                                                                          ( ! [X3: $i,X4: $i] :
                                                                                                                                                              ( ( X3 = X4 )
                                                                                                                                                             => ( ( X1 @ X3 )
                                                                                                                                                                = ( X2 @ X4 ) ) )
                                                                                                                                                         => ( ( exu @ X1 )
                                                                                                                                                           => ( ( exu @ X2 )
                                                                                                                                                             => ( ( descr @ X1 )
                                                                                                                                                                = ( descr @ X2 ) ) ) ) )
                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                            ( ( X1 = X2 )
                                                                                                                                                           => ! [X3: $i > $o,X4: $i > $o] :
                                                                                                                                                                ( ! [X5: $i] :
                                                                                                                                                                    ( ( in @ X5 @ X1 )
                                                                                                                                                                   => ! [X6: $i] :
                                                                                                                                                                        ( ( in @ X6 @ X2 )
                                                                                                                                                                       => ( ( X5 = X6 )
                                                                                                                                                                         => ( ( X3 @ X5 )
                                                                                                                                                                            = ( X4 @ X6 ) ) ) ) )
                                                                                                                                                               => ( ( dsetconstr @ X1 @ X3 )
                                                                                                                                                                  = ( dsetconstr @ X2 @ X4 ) ) ) )
                                                                                                                                                       => ( sP26
                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                                               => ( subset @ X2 @ X1 ) )
                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                  ( ( X1 = X2 )
                                                                                                                                                                 => ( subset @ X1 @ X2 ) )
                                                                                                                                                             => ( sP26
                                                                                                                                                               => ( ( !! @ ( subset @ emptyset ) )
                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                        ( ( subset @ X1 @ X2 )
                                                                                                                                                                       => ( ( in @ X3 @ X1 )
                                                                                                                                                                         => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                          ( ( subset @ X1 @ X2 )
                                                                                                                                                                         => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                           => ~ ( in @ X3 @ X1 ) ) )
                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                           => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                             => ~ ( subset @ X1 @ X2 ) ) )
                                                                                                                                                                       => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                              ( ~ ( subset @ X1 @ X2 )
                                                                                                                                                                             => ( X1 != X2 ) )
                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                ( ( in @ X3 @ X1 )
                                                                                                                                                                               => ( ~ ( in @ X3 @ X2 )
                                                                                                                                                                                 => ( X1 != X2 ) ) )
                                                                                                                                                                           => ( ! [X1: $i] : ( subset @ X1 @ X1 )
                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                    ( ( subset @ X1 @ X2 )
                                                                                                                                                                                   => ( ( subset @ X2 @ X3 )
                                                                                                                                                                                     => ( subset @ X1 @ X3 ) ) )
                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( setadjoin @ X1 @ X2 ) )
                                                                                                                                                                                 => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                        ( ( subset @ X1 @ X3 )
                                                                                                                                                                                       => ( subset @ X1 @ ( setadjoin @ X2 @ X3 ) ) )
                                                                                                                                                                                   => ( sP1
                                                                                                                                                                                     => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                            ( ( subset @ X1 @ X2 )
                                                                                                                                                                                           => ( ( subset @ X2 @ X1 )
                                                                                                                                                                                             => ( X1 = X2 ) ) )
                                                                                                                                                                                       => ( ! [X1: $i] :
                                                                                                                                                                                              ( ( subset @ X1 @ emptyset )
                                                                                                                                                                                             => ( X1 = emptyset ) )
                                                                                                                                                                                         => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                ( ( subset @ X2 @ X1 )
                                                                                                                                                                                               => ( in @ X2 @ ( powerset @ X1 ) ) )
                                                                                                                                                                                           => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                  ( ( in @ X2 @ ( powerset @ X1 ) )
                                                                                                                                                                                                 => ( subset @ X2 @ X1 ) )
                                                                                                                                                                                             => ( ! [X1: $i] : ( in @ X1 @ ( powerset @ X1 ) )
                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                                                                                      ( ( subset @ X1 @ X2 )
                                                                                                                                                                                                     => ( subset @ ( powerset @ X1 ) @ ( powerset @ X2 ) ) )
                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i > $o] : ( in @ ( dsetconstr @ X1 @ X2 ) @ ( powerset @ X1 ) )
                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i > $o] : ( subset @ ( dsetconstr @ X1 @ X2 ) @ X1 )
                                                                                                                                                                                                     => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                            ( ( in @ X3 @ X1 )
                                                                                                                                                                                                           => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                       => ( ! [X1: $i,X2: $i] : ( in @ X2 @ ( setadjoin @ X1 @ ( setadjoin @ X2 @ emptyset ) ) )
                                                                                                                                                                                                         => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                ( ( in @ X3 @ X2 )
                                                                                                                                                                                                               => ( in @ X3 @ ( binunion @ X1 @ X2 ) ) )
                                                                                                                                                                                                           => ( ! [X1: $i,X2: $i,X3: $i,X4: $o] :
                                                                                                                                                                                                                  ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => X4 )
                                                                                                                                                                                                                   => ( ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                       => X4 )
                                                                                                                                                                                                                     => X4 ) ) )
                                                                                                                                                                                                             => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                    ( ( in @ X3 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ~ ( in @ X3 @ X1 )
                                                                                                                                                                                                                     => ( in @ X3 @ X2 ) ) )
                                                                                                                                                                                                               => ( ! [X1: $i,X2: $i] : ( subset @ X1 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                 => ( ! [X1: $i,X2: $i] : ( subset @ X2 @ ( binunion @ X1 @ X2 ) )
                                                                                                                                                                                                                   => ( ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( in @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( in @ X3 @ X2 )
                                                                                                                                                                                                                           => ( in @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) )
                                                                                                                                                                                                                     => ! [X1: $i,X2: $i,X3: $i] :
                                                                                                                                                                                                                          ( ( subset @ X3 @ X1 )
                                                                                                                                                                                                                         => ( ( subset @ X3 @ X2 )
                                                                                                                                                                                                                           => ( subset @ X3
                                                                                                                                                                                                                              @ ( dsetconstr @ X1
                                                                                                                                                                                                                                @ ^ [X4: $i] : ( in @ X4 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(contra,[status(thm),contra(discharge,[h1])],[138,h1]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : SEU590^1 : TPTP v9.2.0. Released v3.7.0.
% 0.03/0.12  % Command  : satallax -E eprover-ho -P picomus -M modes -p tstp -t %d %s
% 0.12/0.33  % Computer : n004.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.33  % WCLimit  : 300
% 0.12/0.33  % DateTime : Wed Oct  8 21:34:08 EDT 2025
% 0.12/0.33  % CPUTime  : 
% 233.84/233.70  % SZS status Theorem
% 233.84/233.70  % Mode: mode461:USE_SINE=true:SINE_TOLERANCE=5.0:SINE_GENERALITY_THRESHOLD=4:SINE_RANK_LIMIT=1.:SINE_DEPTH=0
% 233.84/233.70  % Inferences: 351
% 233.84/233.70  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------