↑ Up

DT2H2X---1.9.5.THM-Ref.s

View TPTP
Problem
Process solution in
SystemOnTSTP
Download .tgz
%------------------------------------------------------------------------------
% File     : DT2H2X---1.9.5
% Problem  : SEU552^1 : TPTP v9.2.1. Bugfixed v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300

% Computer : n005.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 : Wed Feb 25 09:35:14 AM UTC 2026

% Result   : Theorem 2.11s 1.47s
% Output   : Refutation 2.11s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    9
%            Number of leaves      :    3
% Syntax   : Number of formulae    :   14 (   5 unt;   0 typ;   0 def)
%            Number of atoms       : 1088 ( 307 equ;   0 cnn)
%            Maximal formula atoms :   71 (  77 avg)
%            Number of connectives :  562 (  12   ~;   0   |; 216   &;  52   @)
%                                         (   0 <=>; 282  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   76 (  38 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   94 (  91 usr;  74 con; 0-3 aty)
%            Number of variables   :   32 (   0   ^;  16   !;  16   ?;  32   :)

% Comments : 
%------------------------------------------------------------------------------
thf(func_def_0,type,
    in: $i > $i > $o ).

thf(func_def_1,type,
    exu: ( $i > $o ) > $o ).

thf(func_def_6,type,
    setadjoin: $i > $i > $i ).

thf(func_def_8,type,
    powerset: $i > $i ).

thf(func_def_10,type,
    setunion: $i > $i ).

thf(func_def_19,type,
    descr: ( $i > $o ) > $i ).

thf(func_def_21,type,
    dsetconstr: $i > ( $i > $o ) > $i ).

thf(func_def_26,type,
    prop2set: $o > $i ).

thf(func_def_36,type,
    nonempty: $i > $o ).

thf(func_def_69,type,
    set2prop: $i > $o ).

thf(func_def_102,type,
    sK5: $i > $i > $i ).

thf(func_def_103,type,
    sK6: $i > $i > $i ).

thf(func_def_104,type,
    sK7: $o > $i > $i > $i ).

thf(func_def_105,type,
    sK8: $i > $i ).

thf(func_def_106,type,
    sK9: ( $i > $o ) > $i ).

thf(func_def_107,type,
    sK10: ( $i > $o ) > $i > $i ).

thf(func_def_108,type,
    sK11: ( $i > $o ) > $i > $i ).

thf(func_def_109,type,
    sK12: $i > $i ).

thf(func_def_110,type,
    sK13: $i > ( $i > $o ) > $i ).

thf(f567,plain,
    $false,
    inference(trivial_inequality_removal,[status(thm)],[f361]) ).

thf(f361,plain,
    ( ( setadjoin @ sK0 @ sK2 )
   != ( setadjoin @ sK0 @ sK2 ) ),
    inference(definition_unfolding,[status(thm)],[f263,f264,f262]) ).

thf(f262,plain,
    sK3 = sK2,
    inference(cnf_transformation,[status(thm)],[f215]) ).

thf(f215,plain,
    ( ( quantDeMorgan3 = $true )
    & ( prop2set2propI = $true )
    & ( emptyset__Cong = $true )
    & ( uniqinunit = $true )
    & ( exuE3u = $true )
    & ( exu__Cong = $true )
    & ( notdallE = $true )
    & ( replAx = $true )
    & ( emptyInPowerset = $true )
    & ( foundationAx = $true )
    & ( upairsetIR = $true )
    & ( emptyinPowerset = $true )
    & ( setadjoinE = $true )
    & ( quantDeMorgan4 = $true )
    & ( powersetE = $true )
    & ( exuI3 = $true )
    & ( setunionI = $true )
    & ( exuI2 = $true )
    & ( emptysetimpfalse = $true )
    & ( setbeta = $true )
    & ( emptyI = $true )
    & ( powersetAx = $true )
    & ( setadjoinIR = $true )
    & ( eqinunit = $true )
    & ( setunionE = $true )
    & ( exuE1 = $true )
    & ( emptyE1 = $true )
    & ( subPowSU = $true )
    & ( nonemptyE1 = $true )
    & ( noeltsimpempty = $true )
    & ( sK1 = sK0 )
    & ( ( setadjoin @ sK0 @ sK2 )
     != ( setadjoin @ sK1 @ sK3 ) )
    & ( sK3 = sK2 )
    & ( setextAx = $true )
    & ( omega0Ax = $true )
    & ( nonemptyI = $true )
    & ( inCongP = $true )
    & ( in__Cong = $true )
    & ( setadjoinOr = $true )
    & ( prop2setI = $true )
    & ( upairsetIL = $true )
    & ( setadjoinIL = $true )
    & ( omegaSAx = $true )
    & ( exuI1 = $true )
    & ( setadjoinAx = $true )
    & ( dsetconstrER = $true )
    & ( notinemptyset = $true )
    & ( quantDeMorgan2 = $true )
    & ( nonemptyI1 = $true )
    & ( notinsingleton = $true )
    & ( notdexE = $true )
    & ( dsetconstrEL = $true )
    & ( setoftrueEq = $true )
    & ( quantDeMorgan1 = $true )
    & ( setext = $true )
    & ( singletonsswitch = $true )
    & ( dsetconstrI = $true )
    & ( emptysetAx = $true )
    & ( wellorderingAx = $true )
    & ( setunionAx = $true )
    & ( vacuousDall = $true )
    & ( exuE3e = $true )
    & ( upairsetE = $true )
    & ( descrp = $true )
    & ( prop2setE = $true )
    & ( emptyinunitempty = $true )
    & ( powersetI = $true )
    & ( omegaIndAx = $true )
    & ( exuE2 = $true )
    & ( emptysetE = $true )
    & ( nonemptyImpWitness = $true ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3])],[f212,f214,f213]) ).

thf(f213,plain,
    ( ? [X0: $i,X1: $i] :
        ( ( X0 = X1 )
        & ? [X2: $i,X3: $i] :
            ( ( ( setadjoin @ X1 @ X3 )
             != ( setadjoin @ X0 @ X2 ) )
            & ( X2 = X3 ) ) )
   => ( ( sK1 = sK0 )
      & ? [X3: $i,X2: $i] :
          ( ( ( setadjoin @ sK1 @ X3 )
           != ( setadjoin @ sK0 @ X2 ) )
          & ( X2 = X3 ) ) ) ),
    introduced(definition,[],[choice_axiom]) ).

thf(f214,plain,
    ( ? [X3: $i,X2: $i] :
        ( ( ( setadjoin @ sK1 @ X3 )
         != ( setadjoin @ sK0 @ X2 ) )
        & ( X2 = X3 ) )
   => ( ( ( setadjoin @ sK0 @ sK2 )
       != ( setadjoin @ sK1 @ sK3 ) )
      & ( sK3 = sK2 ) ) ),
    introduced(definition,[],[choice_axiom]) ).

thf(f212,plain,
    ( ( quantDeMorgan3 = $true )
    & ( prop2set2propI = $true )
    & ( emptyset__Cong = $true )
    & ( uniqinunit = $true )
    & ( exuE3u = $true )
    & ( exu__Cong = $true )
    & ( notdallE = $true )
    & ( replAx = $true )
    & ( emptyInPowerset = $true )
    & ( foundationAx = $true )
    & ( upairsetIR = $true )
    & ( emptyinPowerset = $true )
    & ( setadjoinE = $true )
    & ( quantDeMorgan4 = $true )
    & ( powersetE = $true )
    & ( exuI3 = $true )
    & ( setunionI = $true )
    & ( exuI2 = $true )
    & ( emptysetimpfalse = $true )
    & ( setbeta = $true )
    & ( emptyI = $true )
    & ( powersetAx = $true )
    & ( setadjoinIR = $true )
    & ( eqinunit = $true )
    & ( setunionE = $true )
    & ( exuE1 = $true )
    & ( emptyE1 = $true )
    & ( subPowSU = $true )
    & ( nonemptyE1 = $true )
    & ( noeltsimpempty = $true )
    & ? [X0: $i,X1: $i] :
        ( ( X0 = X1 )
        & ? [X2: $i,X3: $i] :
            ( ( ( setadjoin @ X1 @ X3 )
             != ( setadjoin @ X0 @ X2 ) )
            & ( X2 = X3 ) ) )
    & ( setextAx = $true )
    & ( omega0Ax = $true )
    & ( nonemptyI = $true )
    & ( inCongP = $true )
    & ( in__Cong = $true )
    & ( setadjoinOr = $true )
    & ( prop2setI = $true )
    & ( upairsetIL = $true )
    & ( setadjoinIL = $true )
    & ( omegaSAx = $true )
    & ( exuI1 = $true )
    & ( setadjoinAx = $true )
    & ( dsetconstrER = $true )
    & ( notinemptyset = $true )
    & ( quantDeMorgan2 = $true )
    & ( nonemptyI1 = $true )
    & ( notinsingleton = $true )
    & ( notdexE = $true )
    & ( dsetconstrEL = $true )
    & ( setoftrueEq = $true )
    & ( quantDeMorgan1 = $true )
    & ( setext = $true )
    & ( singletonsswitch = $true )
    & ( dsetconstrI = $true )
    & ( emptysetAx = $true )
    & ( wellorderingAx = $true )
    & ( setunionAx = $true )
    & ( vacuousDall = $true )
    & ( exuE3e = $true )
    & ( upairsetE = $true )
    & ( descrp = $true )
    & ( prop2setE = $true )
    & ( emptyinunitempty = $true )
    & ( powersetI = $true )
    & ( omegaIndAx = $true )
    & ( exuE2 = $true )
    & ( emptysetE = $true )
    & ( nonemptyImpWitness = $true ) ),
    inference(flattening,[status(thm)],[f211]) ).

thf(f211,plain,
    ( ? [X0: $i,X1: $i] :
        ( ( X0 = X1 )
        & ? [X2: $i,X3: $i] :
            ( ( ( setadjoin @ X1 @ X3 )
             != ( setadjoin @ X0 @ X2 ) )
            & ( X2 = X3 ) ) )
    & ( emptyset__Cong = $true )
    & ( exu__Cong = $true )
    & ( exuE3u = $true )
    & ( in__Cong = $true )
    & ( inCongP = $true )
    & ( exuI2 = $true )
    & ( exuI3 = $true )
    & ( exuI1 = $true )
    & ( notdallE = $true )
    & ( notdexE = $true )
    & ( prop2set2propI = $true )
    & ( prop2setI = $true )
    & ( quantDeMorgan4 = $true )
    & ( quantDeMorgan3 = $true )
    & ( quantDeMorgan2 = $true )
    & ( quantDeMorgan1 = $true )
    & ( vacuousDall = $true )
    & ( emptyE1 = $true )
    & ( upairsetIR = $true )
    & ( upairsetIL = $true )
    & ( upairsetE = $true )
    & ( singletonsswitch = $true )
    & ( eqinunit = $true )
    & ( notinsingleton = $true )
    & ( uniqinunit = $true )
    & ( nonemptyImpWitness = $true )
    & ( exuE2 = $true )
    & ( subPowSU = $true )
    & ( setunionE = $true )
    & ( setunionI = $true )
    & ( powersetE = $true )
    & ( emptyInPowerset = $true )
    & ( emptyinPowerset = $true )
    & ( powersetI = $true )
    & ( setoftrueEq = $true )
    & ( setadjoinOr = $true )
    & ( setadjoinE = $true )
    & ( setadjoinIR = $true )
    & ( emptyinunitempty = $true )
    & ( setadjoinIL = $true )
    & ( nonemptyI1 = $true )
    & ( nonemptyI = $true )
    & ( nonemptyE1 = $true )
    & ( setbeta = $true )
    & ( noeltsimpempty = $true )
    & ( emptyI = $true )
    & ( setext = $true )
    & ( exuE3e = $true )
    & ( notinemptyset = $true )
    & ( emptysetimpfalse = $true )
    & ( emptysetE = $true )
    & ( prop2setE = $true )
    & ( exuE1 = $true )
    & ( dsetconstrER = $true )
    & ( dsetconstrEL = $true )
    & ( dsetconstrI = $true )
    & ( descrp = $true )
    & ( wellorderingAx = $true )
    & ( foundationAx = $true )
    & ( replAx = $true )
    & ( omegaIndAx = $true )
    & ( omegaSAx = $true )
    & ( omega0Ax = $true )
    & ( setunionAx = $true )
    & ( powersetAx = $true )
    & ( setadjoinAx = $true )
    & ( emptysetAx = $true )
    & ( setextAx = $true ) ),
    inference(ennf_transformation,[status(thm)],[f137]) ).

thf(f137,plain,
    ~ ( ( setextAx = $true )
     => ( ( emptysetAx = $true )
       => ( ( setadjoinAx = $true )
         => ( ( powersetAx = $true )
           => ( ( setunionAx = $true )
             => ( ( omega0Ax = $true )
               => ( ( omegaSAx = $true )
                 => ( ( omegaIndAx = $true )
                   => ( ( replAx = $true )
                     => ( ( foundationAx = $true )
                       => ( ( wellorderingAx = $true )
                         => ( ( descrp = $true )
                           => ( ( dsetconstrI = $true )
                             => ( ( dsetconstrEL = $true )
                               => ( ( dsetconstrER = $true )
                                 => ( ( exuE1 = $true )
                                   => ( ( prop2setE = $true )
                                     => ( ( emptysetE = $true )
                                       => ( ( emptysetimpfalse = $true )
                                         => ( ( notinemptyset = $true )
                                           => ( ( exuE3e = $true )
                                             => ( ( setext = $true )
                                               => ( ( emptyI = $true )
                                                 => ( ( noeltsimpempty = $true )
                                                   => ( ( setbeta = $true )
                                                     => ( ( nonemptyE1 = $true )
                                                       => ( ( nonemptyI = $true )
                                                         => ( ( nonemptyI1 = $true )
                                                           => ( ( setadjoinIL = $true )
                                                             => ( ( emptyinunitempty = $true )
                                                               => ( ( setadjoinIR = $true )
                                                                 => ( ( setadjoinE = $true )
                                                                   => ( ( setadjoinOr = $true )
                                                                     => ( ( setoftrueEq = $true )
                                                                       => ( ( powersetI = $true )
                                                                         => ( ( emptyinPowerset = $true )
                                                                           => ( ( emptyInPowerset = $true )
                                                                             => ( ( powersetE = $true )
                                                                               => ( ( setunionI = $true )
                                                                                 => ( ( setunionE = $true )
                                                                                   => ( ( subPowSU = $true )
                                                                                     => ( ( exuE2 = $true )
                                                                                       => ( ( nonemptyImpWitness = $true )
                                                                                         => ( ( uniqinunit = $true )
                                                                                           => ( ( notinsingleton = $true )
                                                                                             => ( ( eqinunit = $true )
                                                                                               => ( ( singletonsswitch = $true )
                                                                                                 => ( ( upairsetE = $true )
                                                                                                   => ( ( upairsetIL = $true )
                                                                                                     => ( ( upairsetIR = $true )
                                                                                                       => ( ( emptyE1 = $true )
                                                                                                         => ( ( vacuousDall = $true )
                                                                                                           => ( ( quantDeMorgan1 = $true )
                                                                                                             => ( ( quantDeMorgan2 = $true )
                                                                                                               => ( ( quantDeMorgan3 = $true )
                                                                                                                 => ( ( quantDeMorgan4 = $true )
                                                                                                                   => ( ( prop2setI = $true )
                                                                                                                     => ( ( prop2set2propI = $true )
                                                                                                                       => ( ( notdexE = $true )
                                                                                                                         => ( ( notdallE = $true )
                                                                                                                           => ( ( exuI1 = $true )
                                                                                                                             => ( ( exuI3 = $true )
                                                                                                                               => ( ( exuI2 = $true )
                                                                                                                                 => ( ( inCongP = $true )
                                                                                                                                   => ( ( in__Cong = $true )
                                                                                                                                     => ( ( exuE3u = $true )
                                                                                                                                       => ( ( exu__Cong = $true )
                                                                                                                                         => ( ( emptyset__Cong = $true )
                                                                                                                                           => ! [X0: $i,X1: $i] :
                                                                                                                                                ( ( X0 = X1 )
                                                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                                                    ( ( X2 = X3 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                      = ( setadjoin @ X0 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f136]) ).

thf(f136,plain,
    ~ ( setextAx
     => ( emptysetAx
       => ( setadjoinAx
         => ( powersetAx
           => ( setunionAx
             => ( omega0Ax
               => ( omegaSAx
                 => ( omegaIndAx
                   => ( replAx
                     => ( foundationAx
                       => ( wellorderingAx
                         => ( descrp
                           => ( dsetconstrI
                             => ( dsetconstrEL
                               => ( dsetconstrER
                                 => ( exuE1
                                   => ( prop2setE
                                     => ( emptysetE
                                       => ( emptysetimpfalse
                                         => ( notinemptyset
                                           => ( exuE3e
                                             => ( setext
                                               => ( emptyI
                                                 => ( noeltsimpempty
                                                   => ( setbeta
                                                     => ( nonemptyE1
                                                       => ( nonemptyI
                                                         => ( nonemptyI1
                                                           => ( setadjoinIL
                                                             => ( emptyinunitempty
                                                               => ( setadjoinIR
                                                                 => ( setadjoinE
                                                                   => ( setadjoinOr
                                                                     => ( setoftrueEq
                                                                       => ( powersetI
                                                                         => ( emptyinPowerset
                                                                           => ( emptyInPowerset
                                                                             => ( powersetE
                                                                               => ( setunionI
                                                                                 => ( setunionE
                                                                                   => ( subPowSU
                                                                                     => ( exuE2
                                                                                       => ( nonemptyImpWitness
                                                                                         => ( uniqinunit
                                                                                           => ( notinsingleton
                                                                                             => ( eqinunit
                                                                                               => ( singletonsswitch
                                                                                                 => ( upairsetE
                                                                                                   => ( upairsetIL
                                                                                                     => ( upairsetIR
                                                                                                       => ( emptyE1
                                                                                                         => ( vacuousDall
                                                                                                           => ( quantDeMorgan1
                                                                                                             => ( quantDeMorgan2
                                                                                                               => ( quantDeMorgan3
                                                                                                                 => ( quantDeMorgan4
                                                                                                                   => ( prop2setI
                                                                                                                     => ( prop2set2propI
                                                                                                                       => ( notdexE
                                                                                                                         => ( notdallE
                                                                                                                           => ( exuI1
                                                                                                                             => ( exuI3
                                                                                                                               => ( exuI2
                                                                                                                                 => ( inCongP
                                                                                                                                   => ( in__Cong
                                                                                                                                     => ( exuE3u
                                                                                                                                       => ( exu__Cong
                                                                                                                                         => ( emptyset__Cong
                                                                                                                                           => ! [X0: $i,X1: $i] :
                                                                                                                                                ( ( X0 = X1 )
                                                                                                                                               => ! [X2: $i,X3: $i] :
                                                                                                                                                    ( ( X2 = X3 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X3 )
                                                                                                                                                      = ( setadjoin @ X0 @ X2 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(rectify,[status(thm)],[f72]) ).

thf(f72,negated_conjecture,
    ~ ( setextAx
     => ( emptysetAx
       => ( setadjoinAx
         => ( powersetAx
           => ( setunionAx
             => ( omega0Ax
               => ( omegaSAx
                 => ( omegaIndAx
                   => ( replAx
                     => ( foundationAx
                       => ( wellorderingAx
                         => ( descrp
                           => ( dsetconstrI
                             => ( dsetconstrEL
                               => ( dsetconstrER
                                 => ( exuE1
                                   => ( prop2setE
                                     => ( emptysetE
                                       => ( emptysetimpfalse
                                         => ( notinemptyset
                                           => ( exuE3e
                                             => ( setext
                                               => ( emptyI
                                                 => ( noeltsimpempty
                                                   => ( setbeta
                                                     => ( nonemptyE1
                                                       => ( nonemptyI
                                                         => ( nonemptyI1
                                                           => ( setadjoinIL
                                                             => ( emptyinunitempty
                                                               => ( setadjoinIR
                                                                 => ( setadjoinE
                                                                   => ( setadjoinOr
                                                                     => ( setoftrueEq
                                                                       => ( powersetI
                                                                         => ( emptyinPowerset
                                                                           => ( emptyInPowerset
                                                                             => ( powersetE
                                                                               => ( setunionI
                                                                                 => ( setunionE
                                                                                   => ( subPowSU
                                                                                     => ( exuE2
                                                                                       => ( nonemptyImpWitness
                                                                                         => ( uniqinunit
                                                                                           => ( notinsingleton
                                                                                             => ( eqinunit
                                                                                               => ( singletonsswitch
                                                                                                 => ( upairsetE
                                                                                                   => ( upairsetIL
                                                                                                     => ( upairsetIR
                                                                                                       => ( emptyE1
                                                                                                         => ( vacuousDall
                                                                                                           => ( quantDeMorgan1
                                                                                                             => ( quantDeMorgan2
                                                                                                               => ( quantDeMorgan3
                                                                                                                 => ( quantDeMorgan4
                                                                                                                   => ( prop2setI
                                                                                                                     => ( prop2set2propI
                                                                                                                       => ( notdexE
                                                                                                                         => ( notdallE
                                                                                                                           => ( exuI1
                                                                                                                             => ( exuI3
                                                                                                                               => ( exuI2
                                                                                                                                 => ( inCongP
                                                                                                                                   => ( in__Cong
                                                                                                                                     => ( exuE3u
                                                                                                                                       => ( exu__Cong
                                                                                                                                         => ( emptyset__Cong
                                                                                                                                           => ! [X1: $i,X2: $i] :
                                                                                                                                                ( ( X1 = X2 )
                                                                                                                                               => ! [X8: $i,X10: $i] :
                                                                                                                                                    ( ( X8 = X10 )
                                                                                                                                                   => ( ( setadjoin @ X1 @ X8 )
                                                                                                                                                      = ( setadjoin @ X2 @ X10 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(negated_conjecture,[status(cth)],[f71]) ).

thf(f71,conjecture,
    ( setextAx
   => ( emptysetAx
     => ( setadjoinAx
       => ( powersetAx
         => ( setunionAx
           => ( omega0Ax
             => ( omegaSAx
               => ( omegaIndAx
                 => ( replAx
                   => ( foundationAx
                     => ( wellorderingAx
                       => ( descrp
                         => ( dsetconstrI
                           => ( dsetconstrEL
                             => ( dsetconstrER
                               => ( exuE1
                                 => ( prop2setE
                                   => ( emptysetE
                                     => ( emptysetimpfalse
                                       => ( notinemptyset
                                         => ( exuE3e
                                           => ( setext
                                             => ( emptyI
                                               => ( noeltsimpempty
                                                 => ( setbeta
                                                   => ( nonemptyE1
                                                     => ( nonemptyI
                                                       => ( nonemptyI1
                                                         => ( setadjoinIL
                                                           => ( emptyinunitempty
                                                             => ( setadjoinIR
                                                               => ( setadjoinE
                                                                 => ( setadjoinOr
                                                                   => ( setoftrueEq
                                                                     => ( powersetI
                                                                       => ( emptyinPowerset
                                                                         => ( emptyInPowerset
                                                                           => ( powersetE
                                                                             => ( setunionI
                                                                               => ( setunionE
                                                                                 => ( subPowSU
                                                                                   => ( exuE2
                                                                                     => ( nonemptyImpWitness
                                                                                       => ( uniqinunit
                                                                                         => ( notinsingleton
                                                                                           => ( eqinunit
                                                                                             => ( singletonsswitch
                                                                                               => ( upairsetE
                                                                                                 => ( upairsetIL
                                                                                                   => ( upairsetIR
                                                                                                     => ( emptyE1
                                                                                                       => ( vacuousDall
                                                                                                         => ( quantDeMorgan1
                                                                                                           => ( quantDeMorgan2
                                                                                                             => ( quantDeMorgan3
                                                                                                               => ( quantDeMorgan4
                                                                                                                 => ( prop2setI
                                                                                                                   => ( prop2set2propI
                                                                                                                     => ( notdexE
                                                                                                                       => ( notdallE
                                                                                                                         => ( exuI1
                                                                                                                           => ( exuI3
                                                                                                                             => ( exuI2
                                                                                                                               => ( inCongP
                                                                                                                                 => ( in__Cong
                                                                                                                                   => ( exuE3u
                                                                                                                                     => ( exu__Cong
                                                                                                                                       => ( emptyset__Cong
                                                                                                                                         => ! [X1: $i,X2: $i] :
                                                                                                                                              ( ( X1 = X2 )
                                                                                                                                             => ! [X8: $i,X10: $i] :
                                                                                                                                                  ( ( X8 = X10 )
                                                                                                                                                 => ( ( setadjoin @ X1 @ X8 )
                                                                                                                                                    = ( setadjoin @ X2 @ X10 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.p3DyBkhLYx/DTF2THF_24372.p',setadjoin__Cong) ).

thf(f264,plain,
    sK1 = sK0,
    inference(cnf_transformation,[status(thm)],[f215]) ).

thf(f263,plain,
    ( ( setadjoin @ sK0 @ sK2 )
   != ( setadjoin @ sK1 @ sK3 ) ),
    inference(cnf_transformation,[status(thm)],[f215]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.11  % Problem  : SEU552^1 : TPTP v9.2.1. Bugfixed v4.0.0.
% 0.00/0.13  % Command  : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.15/0.33  % Computer : n005.cluster.edu
% 0.15/0.33  % Model    : x86_64 x86_64
% 0.15/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.33  % Memory   : 8042.1875MB
% 0.15/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.33  % CPULimit : 300
% 0.15/0.33  % WCLimit  : 300
% 0.15/0.33  % DateTime : Tue Feb 24 12:33:44 EST 2026
% 0.15/0.34  % CPUTime  : 
% 0.15/0.34  Running /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.30/0.46  ---- Original DTF file ---
% 0.30/0.46  thf(spec,logic,$$dhol).
% 0.30/0.46  %------------------------------------------------------------------------------
% 0.30/0.46  % File     : SEU552^1 : TPTP v9.2.1. Bugfixed v4.0.0.
% 0.30/0.46  % Domain   : Set Theory
% 0.30/0.46  % Problem  : A simple congruence property of setadjoin
% 0.30/0.46  % Version  : Especial.
% 0.30/0.46  % English  : (forall x:i.forall y:i.x = y -> (forall z:i.forall u:i.z = u ->
% 0.30/0.46  %            setadjoin x z = setadjoin y u))
% 0.30/0.46  
% 0.30/0.46  % Refs     : [Bro08] Brown (2008), Email to G. Sutcliffe
% 0.30/0.46  % Source   : [Bro08]
% 0.30/0.46  % Names    : ZFC054g [Bro08]
% 0.30/0.46  
% 0.30/0.46  % Status   : Theorem
% 0.30/0.46  % Rating   : 0.11 v9.1.0, 0.12 v9.0.0, 0.30 v8.2.0, 0.15 v8.1.0, 0.09 v7.5.0, 0.14 v7.4.0, 0.22 v7.2.0, 0.12 v7.1.0, 0.38 v7.0.0, 0.29 v6.4.0, 0.33 v6.3.0, 0.40 v6.2.0, 0.29 v6.1.0, 0.43 v5.5.0, 0.33 v5.4.0, 0.40 v5.1.0, 0.60 v5.0.0, 0.40 v4.1.0, 0.33 v4.0.1, 0.67 v4.0.0
% 0.30/0.46  % Syntax   : Number of formulae    :  151 (  70 unt;  80 typ;  70 def)
% 0.30/0.46  %            Number of atoms       :  384 ( 102 equ;   0 cnn)
% 0.30/0.46  %            Maximal formula atoms :   71 (   5 avg)
% 0.30/0.46  %            Number of connectives :  628 (  21   ~;   5   |;  27   &; 390   @)
% 0.30/0.46  %                                         (  12 <=>; 173  =>;   0  <=;   0 <~>)
% 0.30/0.46  %            Maximal formula depth :   75 (   2 avg)
% 0.30/0.46  %            Number of types       :    2 (   0 usr)
% 0.30/0.46  %            Number of type conns  :   42 (  42   >;   0   *;   0   +;   0  <<)
% 0.30/0.46  %            Number of symbols     :   83 (  80 usr;  72 con; 0-2 aty)
% 0.30/0.46  %            Number of variables   :  218 (  21   ^; 169   !;  28   ?; 218   :)
% 0.30/0.46  % SPC      : TH0_THM_EQU_NAR
% 0.30/0.46  
% 0.30/0.46  % Comments : http://mathgate.info/detsetitem.php?id=29
% 0.30/0.46  % Bugfixes : v4.0.0 - Adding missing type delaration for in
% 0.30/0.46  %------------------------------------------------------------------------------
% 0.30/0.46  thf(in_type,type,
% 0.30/0.46      in: $i > $i > $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exu_type,type,
% 0.30/0.46      exu: ( $i > $o ) > $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exu,definition,
% 0.30/0.46      ( exu
% 0.30/0.46      = ( ^ [Xphi: $i > $o] :
% 0.30/0.46          ? [Xx: $i] :
% 0.30/0.46            ( ( Xphi @ Xx )
% 0.30/0.46            & ! [Xy: $i] :
% 0.30/0.46                ( ( Xphi @ Xy )
% 0.30/0.46               => ( Xx = Xy ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setextAx_type,type,
% 0.30/0.46      setextAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setextAx,definition,
% 0.30/0.46      ( setextAx
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46              <=> ( in @ Xx @ B ) )
% 0.30/0.46           => ( A = B ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyset_type,type,
% 0.30/0.46      emptyset: $i ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetAx_type,type,
% 0.30/0.46      emptysetAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetAx,definition,
% 0.30/0.46      ( emptysetAx
% 0.30/0.46      = ( ! [Xx: $i] :
% 0.30/0.46            ~ ( in @ Xx @ emptyset ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoin_type,type,
% 0.30/0.46      setadjoin: $i > $i > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinAx_type,type,
% 0.30/0.46      setadjoinAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinAx,definition,
% 0.30/0.46      ( setadjoinAx
% 0.30/0.46      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.30/0.46          <=> ( ( Xy = Xx )
% 0.30/0.46              | ( in @ Xy @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(powerset_type,type,
% 0.30/0.46      powerset: $i > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetAx_type,type,
% 0.30/0.46      powersetAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetAx,definition,
% 0.30/0.46      ( powersetAx
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ( in @ B @ ( powerset @ A ) )
% 0.30/0.46          <=> ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ B )
% 0.30/0.46               => ( in @ Xx @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setunion_type,type,
% 0.30/0.46      setunion: $i > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionAx_type,type,
% 0.30/0.46      setunionAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionAx,definition,
% 0.30/0.46      ( setunionAx
% 0.30/0.46      = ( ! [A: $i,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ ( setunion @ A ) )
% 0.30/0.46          <=> ? [B: $i] :
% 0.30/0.46                ( ( in @ Xx @ B )
% 0.30/0.46                & ( in @ B @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(omega_type,type,
% 0.30/0.46      omega: $i ).
% 0.30/0.46  
% 0.30/0.46  thf(omega0Ax_type,type,
% 0.30/0.46      omega0Ax: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(omega0Ax,definition,
% 0.30/0.46      ( omega0Ax
% 0.30/0.46      = ( in @ emptyset @ omega ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(omegaSAx_type,type,
% 0.30/0.46      omegaSAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(omegaSAx,definition,
% 0.30/0.46      ( omegaSAx
% 0.30/0.46      = ( ! [Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ omega )
% 0.30/0.46           => ( in @ ( setadjoin @ Xx @ Xx ) @ omega ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(omegaIndAx_type,type,
% 0.30/0.46      omegaIndAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(omegaIndAx,definition,
% 0.30/0.46      ( omegaIndAx
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ( ( in @ emptyset @ A )
% 0.30/0.46              & ! [Xx: $i] :
% 0.30/0.46                  ( ( ( in @ Xx @ omega )
% 0.30/0.46                    & ( in @ Xx @ A ) )
% 0.30/0.46                 => ( in @ ( setadjoin @ Xx @ Xx ) @ A ) ) )
% 0.30/0.46           => ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ omega )
% 0.30/0.46               => ( in @ Xx @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(replAx_type,type,
% 0.30/0.46      replAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(replAx,definition,
% 0.30/0.46      ( replAx
% 0.30/0.46      = ( ! [Xphi: $i > $i > $o,A: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46               => ( exu
% 0.30/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xx @ Xy ) ) )
% 0.30/0.46           => ? [B: $i] :
% 0.30/0.46              ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ B )
% 0.30/0.46              <=> ? [Xy: $i] :
% 0.30/0.46                    ( ( in @ Xy @ A )
% 0.30/0.46                    & ( Xphi @ Xy @ Xx ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(foundationAx_type,type,
% 0.30/0.46      foundationAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(foundationAx,definition,
% 0.30/0.46      ( foundationAx
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ? [Xx: $i] : ( in @ Xx @ A )
% 0.30/0.46           => ? [B: $i] :
% 0.30/0.46                ( ( in @ B @ A )
% 0.30/0.46                & ~ ? [Xx: $i] :
% 0.30/0.46                      ( ( in @ Xx @ B )
% 0.30/0.46                      & ( in @ Xx @ A ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(wellorderingAx_type,type,
% 0.30/0.46      wellorderingAx: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(wellorderingAx,definition,
% 0.30/0.46      ( wellorderingAx
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46          ? [B: $i] :
% 0.30/0.46            ( ! [C: $i] :
% 0.30/0.46                ( ( in @ C @ B )
% 0.30/0.46               => ! [Xx: $i] :
% 0.30/0.46                    ( ( in @ Xx @ C )
% 0.30/0.46                   => ( in @ Xx @ A ) ) )
% 0.30/0.46            & ! [Xx: $i,Xy: $i] :
% 0.30/0.46                ( ( ( in @ Xx @ A )
% 0.30/0.46                  & ( in @ Xy @ A ) )
% 0.30/0.46               => ( ! [C: $i] :
% 0.30/0.46                      ( ( in @ C @ B )
% 0.30/0.46                     => ( ( in @ Xx @ C )
% 0.30/0.46                      <=> ( in @ Xy @ C ) ) )
% 0.30/0.46                 => ( Xx = Xy ) ) )
% 0.30/0.46            & ! [C: $i,D: $i] :
% 0.30/0.46                ( ( ( in @ C @ B )
% 0.30/0.46                  & ( in @ D @ B ) )
% 0.30/0.46               => ( ! [Xx: $i] :
% 0.30/0.46                      ( ( in @ Xx @ C )
% 0.30/0.46                     => ( in @ Xx @ D ) )
% 0.30/0.46                  | ! [Xx: $i] :
% 0.30/0.46                      ( ( in @ Xx @ D )
% 0.30/0.46                     => ( in @ Xx @ C ) ) ) )
% 0.30/0.46            & ! [C: $i] :
% 0.30/0.46                ( ( ! [Xx: $i] :
% 0.30/0.46                      ( ( in @ Xx @ C )
% 0.30/0.46                     => ( in @ Xx @ A ) )
% 0.30/0.46                  & ? [Xx: $i] : ( in @ Xx @ C ) )
% 0.30/0.46               => ? [D: $i,Xx: $i] :
% 0.30/0.46                    ( ( in @ D @ B )
% 0.30/0.46                    & ( in @ Xx @ C )
% 0.30/0.46                    & ~ ? [Xy: $i] :
% 0.30/0.46                          ( ( in @ Xy @ D )
% 0.30/0.46                          & ( in @ Xy @ C ) )
% 0.30/0.46                    & ! [E: $i] :
% 0.30/0.46                        ( ( in @ E @ B )
% 0.30/0.46                       => ( ! [Xy: $i] :
% 0.30/0.46                              ( ( in @ Xy @ E )
% 0.30/0.46                             => ( in @ Xy @ D ) )
% 0.30/0.46                          | ( in @ Xx @ E ) ) ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(descr_type,type,
% 0.30/0.46      descr: ( $i > $o ) > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(descrp_type,type,
% 0.30/0.46      descrp: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(descrp,definition,
% 0.30/0.46      ( descrp
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46           => ( Xphi
% 0.30/0.46              @ ( descr
% 0.30/0.46                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstr_type,type,
% 0.30/0.46      dsetconstr: $i > ( $i > $o ) > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrI_type,type,
% 0.30/0.46      dsetconstrI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrI,definition,
% 0.30/0.46      ( dsetconstrI
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ A )
% 0.30/0.46           => ( ( Xphi @ Xx )
% 0.30/0.46             => ( in @ Xx
% 0.30/0.46                @ ( dsetconstr @ A
% 0.30/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrEL_type,type,
% 0.30/0.46      dsetconstrEL: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrEL,definition,
% 0.30/0.46      ( dsetconstrEL
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx
% 0.30/0.46              @ ( dsetconstr @ A
% 0.30/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.30/0.46           => ( in @ Xx @ A ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrER_type,type,
% 0.30/0.46      dsetconstrER: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(dsetconstrER,definition,
% 0.30/0.46      ( dsetconstrER
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx
% 0.30/0.46              @ ( dsetconstr @ A
% 0.30/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.30/0.46           => ( Xphi @ Xx ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE1_type,type,
% 0.30/0.46      exuE1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE1,definition,
% 0.30/0.46      ( exuE1
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46           => ? [Xx: $i] :
% 0.30/0.46                ( ( Xphi @ Xx )
% 0.30/0.46                & ! [Xy: $i] :
% 0.30/0.46                    ( ( Xphi @ Xy )
% 0.30/0.46                   => ( Xx = Xy ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2set_type,type,
% 0.30/0.46      prop2set: $o > $i ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2setE_type,type,
% 0.30/0.46      prop2setE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2setE,definition,
% 0.30/0.46      ( prop2setE
% 0.30/0.46      = ( ! [Xphi: $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ ( prop2set @ Xphi ) )
% 0.30/0.46           => Xphi ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetE_type,type,
% 0.30/0.46      emptysetE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetE,definition,
% 0.30/0.46      ( emptysetE
% 0.30/0.46      = ( ! [Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ emptyset )
% 0.30/0.46           => ! [Xphi: $o] : Xphi ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetimpfalse_type,type,
% 0.30/0.46      emptysetimpfalse: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptysetimpfalse,definition,
% 0.30/0.46      ( emptysetimpfalse
% 0.30/0.46      = ( ! [Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ emptyset )
% 0.30/0.46           => $false ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(notinemptyset_type,type,
% 0.30/0.46      notinemptyset: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(notinemptyset,definition,
% 0.30/0.46      ( notinemptyset
% 0.30/0.46      = ( ! [Xx: $i] :
% 0.30/0.46            ~ ( in @ Xx @ emptyset ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE3e_type,type,
% 0.30/0.46      exuE3e: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE3e,definition,
% 0.30/0.46      ( exuE3e
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46           => ? [Xx: $i] : ( Xphi @ Xx ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setext_type,type,
% 0.30/0.46      setext: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setext,definition,
% 0.30/0.46      ( setext
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46               => ( in @ Xx @ B ) )
% 0.30/0.46           => ( ! [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ B )
% 0.30/0.46                 => ( in @ Xx @ A ) )
% 0.30/0.46             => ( A = B ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyI_type,type,
% 0.30/0.46      emptyI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyI,definition,
% 0.30/0.46      ( emptyI
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ~ ( in @ Xx @ A )
% 0.30/0.46           => ( A = emptyset ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(noeltsimpempty_type,type,
% 0.30/0.46      noeltsimpempty: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(noeltsimpempty,definition,
% 0.30/0.46      ( noeltsimpempty
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ~ ( in @ Xx @ A )
% 0.30/0.46           => ( A = emptyset ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setbeta_type,type,
% 0.30/0.46      setbeta: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setbeta,definition,
% 0.30/0.46      ( setbeta
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ A )
% 0.30/0.46           => ( ( in @ Xx
% 0.30/0.46                @ ( dsetconstr @ A
% 0.30/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.30/0.46            <=> ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(nonempty_type,type,
% 0.30/0.46      nonempty: $i > $o ).
% 0.30/0.46  
% 0.30/0.46  thf(nonempty,definition,
% 0.30/0.46      ( nonempty
% 0.30/0.46      = ( ^ [Xx: $i] : ( Xx != emptyset ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyE1_type,type,
% 0.30/0.46      nonemptyE1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyE1,definition,
% 0.30/0.46      ( nonemptyE1
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ( nonempty @ A )
% 0.30/0.46           => ? [Xx: $i] : ( in @ Xx @ A ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyI_type,type,
% 0.30/0.46      nonemptyI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyI,definition,
% 0.30/0.46      ( nonemptyI
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ A )
% 0.30/0.46           => ( ( Xphi @ Xx )
% 0.30/0.46             => ( nonempty
% 0.30/0.46                @ ( dsetconstr @ A
% 0.30/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyI1_type,type,
% 0.30/0.46      nonemptyI1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyI1,definition,
% 0.30/0.46      ( nonemptyI1
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ? [Xx: $i] : ( in @ Xx @ A )
% 0.30/0.46           => ( nonempty @ A ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinIL_type,type,
% 0.30/0.46      setadjoinIL: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinIL,definition,
% 0.30/0.46      ( setadjoinIL
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ Xy ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyinunitempty_type,type,
% 0.30/0.46      emptyinunitempty: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyinunitempty,definition,
% 0.30/0.46      ( emptyinunitempty
% 0.30/0.46      = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinIR_type,type,
% 0.30/0.46      setadjoinIR: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinIR,definition,
% 0.30/0.46      ( setadjoinIR
% 0.30/0.46      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xy @ A )
% 0.30/0.46           => ( in @ Xy @ ( setadjoin @ Xx @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinE_type,type,
% 0.30/0.46      setadjoinE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinE,definition,
% 0.30/0.46      ( setadjoinE
% 0.30/0.46      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.30/0.46           => ! [Xphi: $o] :
% 0.30/0.46                ( ( ( Xy = Xx )
% 0.30/0.46                 => Xphi )
% 0.30/0.46               => ( ( ( in @ Xy @ A )
% 0.30/0.46                   => Xphi )
% 0.30/0.46                 => Xphi ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinOr_type,type,
% 0.30/0.46      setadjoinOr: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoinOr,definition,
% 0.30/0.46      ( setadjoinOr
% 0.30/0.46      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.30/0.46           => ( ( Xy = Xx )
% 0.30/0.46              | ( in @ Xy @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setoftrueEq_type,type,
% 0.30/0.46      setoftrueEq: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setoftrueEq,definition,
% 0.30/0.46      ( setoftrueEq
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ( dsetconstr @ A
% 0.30/0.46              @ ^ [Xx: $i] : $true )
% 0.30/0.46            = A ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetI_type,type,
% 0.30/0.46      powersetI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetI,definition,
% 0.30/0.46      ( powersetI
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ B )
% 0.30/0.46               => ( in @ Xx @ A ) )
% 0.30/0.46           => ( in @ B @ ( powerset @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyinPowerset_type,type,
% 0.30/0.46      emptyinPowerset: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyinPowerset,definition,
% 0.30/0.46      ( emptyinPowerset
% 0.30/0.46      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyInPowerset_type,type,
% 0.30/0.46      emptyInPowerset: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyInPowerset,definition,
% 0.30/0.46      ( emptyInPowerset
% 0.30/0.46      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetE_type,type,
% 0.30/0.46      powersetE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(powersetE,definition,
% 0.30/0.46      ( powersetE
% 0.30/0.46      = ( ! [A: $i,B: $i,Xx: $i] :
% 0.30/0.46            ( ( in @ B @ ( powerset @ A ) )
% 0.30/0.46           => ( ( in @ Xx @ B )
% 0.30/0.46             => ( in @ Xx @ A ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionI_type,type,
% 0.30/0.46      setunionI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionI,definition,
% 0.30/0.46      ( setunionI
% 0.30/0.46      = ( ! [A: $i,Xx: $i,B: $i] :
% 0.30/0.46            ( ( in @ Xx @ B )
% 0.30/0.46           => ( ( in @ B @ A )
% 0.30/0.46             => ( in @ Xx @ ( setunion @ A ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionE_type,type,
% 0.30/0.46      setunionE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(setunionE,definition,
% 0.30/0.46      ( setunionE
% 0.30/0.46      = ( ! [A: $i,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ ( setunion @ A ) )
% 0.30/0.46           => ! [Xphi: $o] :
% 0.30/0.46                ( ! [B: $i] :
% 0.30/0.46                    ( ( in @ Xx @ B )
% 0.30/0.46                   => ( ( in @ B @ A )
% 0.30/0.46                     => Xphi ) )
% 0.30/0.46               => Xphi ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(subPowSU_type,type,
% 0.30/0.46      subPowSU: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(subPowSU,definition,
% 0.30/0.46      ( subPowSU
% 0.30/0.46      = ( ! [A: $i,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ A )
% 0.30/0.46           => ( in @ Xx @ ( powerset @ ( setunion @ A ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE2_type,type,
% 0.30/0.46      exuE2: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE2,definition,
% 0.30/0.46      ( exuE2
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46           => ? [Xx: $i] :
% 0.30/0.46              ! [Xy: $i] :
% 0.30/0.46                ( ( Xphi @ Xy )
% 0.30/0.46              <=> ( Xy = Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyImpWitness_type,type,
% 0.30/0.46      nonemptyImpWitness: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(nonemptyImpWitness,definition,
% 0.30/0.46      ( nonemptyImpWitness
% 0.30/0.46      = ( ! [A: $i] :
% 0.30/0.46            ( ( nonempty @ A )
% 0.30/0.46           => ? [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46                & $true ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(uniqinunit_type,type,
% 0.30/0.46      uniqinunit: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(uniqinunit,definition,
% 0.30/0.46      ( uniqinunit
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 0.30/0.46           => ( Xx = Xy ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(notinsingleton_type,type,
% 0.30/0.46      notinsingleton: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(notinsingleton,definition,
% 0.30/0.46      ( notinsingleton
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46            ( ( Xx != Xy )
% 0.30/0.46           => ~ ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(eqinunit_type,type,
% 0.30/0.46      eqinunit: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(eqinunit,definition,
% 0.30/0.46      ( eqinunit
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46            ( ( Xx = Xy )
% 0.30/0.46           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(singletonsswitch_type,type,
% 0.30/0.46      singletonsswitch: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(singletonsswitch,definition,
% 0.30/0.46      ( singletonsswitch
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 0.30/0.46           => ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetE_type,type,
% 0.30/0.46      upairsetE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetE,definition,
% 0.30/0.46      ( upairsetE
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i,Xz: $i] :
% 0.30/0.46            ( ( in @ Xz @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) )
% 0.30/0.46           => ( ( Xz = Xx )
% 0.30/0.46              | ( Xz = Xy ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetIL_type,type,
% 0.30/0.46      upairsetIL: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetIL,definition,
% 0.30/0.46      ( upairsetIL
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetIR_type,type,
% 0.30/0.46      upairsetIR: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(upairsetIR,definition,
% 0.30/0.46      ( upairsetIR
% 0.30/0.46      = ( ! [Xx: $i,Xy: $i] : ( in @ Xy @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyE1_type,type,
% 0.30/0.46      emptyE1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyE1,definition,
% 0.30/0.46      ( emptyE1
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ? [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46                & ( Xphi @ Xx ) )
% 0.30/0.46           => ( ( ( dsetconstr @ A
% 0.30/0.46                  @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46                = emptyset )
% 0.30/0.46             => $false ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(vacuousDall_type,type,
% 0.30/0.46      vacuousDall: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(vacuousDall,definition,
% 0.30/0.46      ( vacuousDall
% 0.30/0.46      = ( ! [Xphi: $i > $o,Xx: $i] :
% 0.30/0.46            ( ( in @ Xx @ emptyset )
% 0.30/0.46           => ( Xphi @ Xx ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan1_type,type,
% 0.30/0.46      quantDeMorgan1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan1,definition,
% 0.30/0.46      ( quantDeMorgan1
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ~ ! [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                 => ( Xphi @ Xx ) )
% 0.30/0.46           => ? [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan2_type,type,
% 0.30/0.46      quantDeMorgan2: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan2,definition,
% 0.30/0.46      ( quantDeMorgan2
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46               => ~ ( Xphi @ Xx ) )
% 0.30/0.46           => ~ ? [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                  & ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan3_type,type,
% 0.30/0.46      quantDeMorgan3: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan3,definition,
% 0.30/0.46      ( quantDeMorgan3
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ~ ? [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                  & ( Xphi @ Xx ) )
% 0.30/0.46           => ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan4_type,type,
% 0.30/0.46      quantDeMorgan4: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(quantDeMorgan4,definition,
% 0.30/0.46      ( quantDeMorgan4
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ? [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46                & ~ ( Xphi @ Xx ) )
% 0.30/0.46           => ~ ! [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                 => ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2setI_type,type,
% 0.30/0.46      prop2setI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2setI,definition,
% 0.30/0.46      ( prop2setI
% 0.30/0.46      = ( ! [Xphi: $o] :
% 0.30/0.46            ( Xphi
% 0.30/0.46           => ( in @ emptyset @ ( prop2set @ Xphi ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(set2prop_type,type,
% 0.30/0.46      set2prop: $i > $o ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2set2propI_type,type,
% 0.30/0.46      prop2set2propI: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(prop2set2propI,definition,
% 0.30/0.46      ( prop2set2propI
% 0.30/0.46      = ( ! [Xphi: $o] :
% 0.30/0.46            ( Xphi
% 0.30/0.46           => ( set2prop @ ( prop2set @ Xphi ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(notdexE_type,type,
% 0.30/0.46      notdexE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(notdexE,definition,
% 0.30/0.46      ( notdexE
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ~ ? [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                  & ( Xphi @ Xx ) )
% 0.30/0.46           => ! [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(notdallE_type,type,
% 0.30/0.46      notdallE: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(notdallE,definition,
% 0.30/0.46      ( notdallE
% 0.30/0.46      = ( ! [A: $i,Xphi: $i > $o] :
% 0.30/0.46            ( ~ ! [Xx: $i] :
% 0.30/0.46                  ( ( in @ Xx @ A )
% 0.30/0.46                 => ( Xphi @ Xx ) )
% 0.30/0.46           => ? [Xx: $i] :
% 0.30/0.46                ( ( in @ Xx @ A )
% 0.30/0.46                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI1_type,type,
% 0.30/0.46      exuI1: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI1,definition,
% 0.30/0.46      ( exuI1
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ? [Xx: $i] :
% 0.30/0.46                ( ( Xphi @ Xx )
% 0.30/0.46                & ! [Xy: $i] :
% 0.30/0.46                    ( ( Xphi @ Xy )
% 0.30/0.46                   => ( Xx = Xy ) ) )
% 0.30/0.46           => ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI3_type,type,
% 0.30/0.46      exuI3: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI3,definition,
% 0.30/0.46      ( exuI3
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ? [Xx: $i] : ( Xphi @ Xx )
% 0.30/0.46           => ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46                  ( ( Xphi @ Xx )
% 0.30/0.46                 => ( ( Xphi @ Xy )
% 0.30/0.46                   => ( Xx = Xy ) ) )
% 0.30/0.46             => ( exu
% 0.30/0.46                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI2_type,type,
% 0.30/0.46      exuI2: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuI2,definition,
% 0.30/0.46      ( exuI2
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ? [Xx: $i] :
% 0.30/0.46              ! [Xy: $i] :
% 0.30/0.46                ( ( Xphi @ Xy )
% 0.30/0.46              <=> ( Xy = Xx ) )
% 0.30/0.46           => ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(inCongP_type,type,
% 0.30/0.46      inCongP: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(inCongP,definition,
% 0.30/0.46      ( inCongP
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ( A = B )
% 0.30/0.46           => ! [Xx: $i,Xy: $i] :
% 0.30/0.46                ( ( Xx = Xy )
% 0.30/0.46               => ( ( in @ Xx @ A )
% 0.30/0.46                 => ( in @ Xy @ B ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(in__Cong_type,type,
% 0.30/0.46      in__Cong: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(in__Cong,definition,
% 0.30/0.46      ( in__Cong
% 0.30/0.46      = ( ! [A: $i,B: $i] :
% 0.30/0.46            ( ( A = B )
% 0.30/0.46           => ! [Xx: $i,Xy: $i] :
% 0.30/0.46                ( ( Xx = Xy )
% 0.30/0.46               => ( ( in @ Xx @ A )
% 0.30/0.46                <=> ( in @ Xy @ B ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE3u_type,type,
% 0.30/0.46      exuE3u: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exuE3u,definition,
% 0.30/0.46      ( exuE3u
% 0.30/0.46      = ( ! [Xphi: $i > $o] :
% 0.30/0.46            ( ( exu
% 0.30/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46           => ! [Xx: $i,Xy: $i] :
% 0.30/0.46                ( ( Xphi @ Xx )
% 0.30/0.46               => ( ( Xphi @ Xy )
% 0.30/0.46                 => ( Xx = Xy ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(exu__Cong_type,type,
% 0.30/0.46      exu__Cong: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(exu__Cong,definition,
% 0.30/0.46      ( exu__Cong
% 0.30/0.46      = ( ! [Xphi: $i > $o,Xpsi: $i > $o] :
% 0.30/0.46            ( ! [Xx: $i,Xy: $i] :
% 0.30/0.46                ( ( Xx = Xy )
% 0.30/0.46               => ( ( Xphi @ Xx )
% 0.30/0.46                <=> ( Xpsi @ Xy ) ) )
% 0.30/0.46           => ( ( exu
% 0.30/0.46                @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.30/0.46            <=> ( exu
% 0.30/0.46                @ ^ [Xx: $i] : ( Xpsi @ Xx ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyset__Cong_type,type,
% 0.30/0.46      emptyset__Cong: $o ).
% 0.30/0.46  
% 0.30/0.46  thf(emptyset__Cong,definition,
% 0.30/0.46      ( emptyset__Cong
% 0.30/0.46      = ( emptyset = emptyset ) ) ).
% 0.30/0.46  
% 0.30/0.46  thf(setadjoin__Cong,conjecture,
% 0.30/0.46      ( setextAx
% 0.30/0.46     => ( emptysetAx
% 0.30/0.46       => ( setadjoinAx
% 0.30/0.46         => ( powersetAx
% 0.30/0.46           => ( setunionAx
% 0.30/0.46             => ( omega0Ax
% 0.30/0.46               => ( omegaSAx
% 0.30/0.46                 => ( omegaIndAx
% 0.30/0.46                   => ( replAx
% 0.30/0.46                     => ( foundationAx
% 0.30/0.46                       => ( wellorderingAx
% 0.30/0.46                         => ( descrp
% 0.30/0.46                           => ( dsetconstrI
% 0.30/0.46                             => ( dsetconstrEL
% 0.30/0.46                               => ( dsetconstrER
% 0.30/0.46                                 => ( exuE1
% 0.30/0.46                                   => ( prop2setE
% 0.30/0.46                                     => ( emptysetE
% 0.30/0.46                                       => ( emptysetimpfalse
% 0.30/0.46                                         => ( notinemptyset
% 0.30/0.46                                           => ( exuE3e
% 0.30/0.46                                             => ( setext
% 0.30/0.46                                               => ( emptyI
% 0.30/0.46                                                 => ( noeltsimpempty
% 0.30/0.46                                                   => ( setbeta
% 0.30/0.46                                                     => ( nonemptyE1
% 0.30/0.46                                                       => ( nonemptyI
% 0.30/0.46                                                         => ( nonemptyI1
% 0.30/0.46                                                           => ( setadjoinIL
% 0.30/0.46                                                             => ( emptyinunitempty
% 0.30/0.46                                                               => ( setadjoinIR
% 0.30/0.46                                                                 => ( setadjoinE
% 0.30/0.46                                                                   => ( setadjoinOr
% 0.30/0.46                                                                     => ( setoftrueEq
% 0.30/0.46                                                                       => ( powersetI
% 0.30/0.46                                                                         => ( emptyinPowerset
% 0.30/0.46                                                                           => ( emptyInPowerset
% 0.30/0.46                                                                             => ( powersetE
% 0.30/0.46                                                                               => ( setunionI
% 0.30/0.46                                                                                 => ( setunionE
% 0.30/0.46                                                                                   => ( subPowSU
% 0.30/0.46                                                                                     => ( exuE2
% 0.30/0.46                                                                                       => ( nonemptyImpWitness
% 0.30/0.46                                                                                         => ( uniqinunit
% 0.30/0.46                                                                                           => ( notinsingleton
% 0.30/0.46                                                                                             => ( eqinunit
% 0.30/0.46                                                                                               => ( singletonsswitch
% 0.30/0.46                                                                                                 => ( upairsetE
% 0.30/0.46                                                                                                   => ( upairsetIL
% 0.30/0.46                                                                                                     => ( upairsetIR
% 0.30/0.46                                                                                                       => ( emptyE1
% 0.30/0.46                                                                                                         => ( vacuousDall
% 0.30/0.46                                                                                                           => ( quantDeMorgan1
% 0.30/0.46                                                                                                             => ( quantDeMorgan2
% 0.30/0.46                                                                                                               => ( quantDeMorgan3
% 0.30/0.46                                                                                                                 => ( quantDeMorgan4
% 0.30/0.46                                                                                                                   => ( prop2setI
% 0.30/0.46                                                                                                                     => ( prop2set2propI
% 0.30/0.46                                                                                                                       => ( notdexE
% 0.30/0.46                                                                                                                         => ( notdallE
% 0.30/0.46                                                                                                                           => ( exuI1
% 0.30/0.46                                                                                                                             => ( exuI3
% 0.30/0.46                                                                                                                               => ( exuI2
% 0.30/0.46                                                                                                                                 => ( inCongP
% 0.30/0.46                                                                                                                                   => ( in__Cong
% 0.30/0.46                                                                                                                                     => ( exuE3u
% 0.30/0.46                                                                                                                                       => ( exu__Cong
% 0.30/0.46                                                                                                                                         => ( emptyset__Cong
% 0.30/0.46                                                                                                                                           => ! [Xx: $i,Xy: $i] :
% 0.30/0.46                                                                                                                                                ( ( Xx = Xy )
% 0.30/0.46                                                                                                                                               => ! [Xz: $i,Xu: $i] :
% 0.30/0.46                                                                                                                                                    ( ( Xz = Xu )
% 0.30/0.46                                                                                                                                                   => ( ( setadjoin @ Xx @ Xz )
% 0.30/0.46                                                                                                                                                      = ( setadjoin @ Xy @ Xu ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).
% 0.30/0.46  
% 0.30/0.46  %------------------------------------------------------------------------------
% 0.30/0.46  ------------------------
% 2.11/1.42  ---- Embedded in THF ---
% 2.11/1.42  %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 2.11/1.42  %%% Generated on Tue Feb 24 12:33:45 EST 2026
% 2.11/1.42  %%% using '$$dhol' embedding, version 1.3.0.
% 2.11/1.42  %%% Logic specification used:
% 2.11/1.42  %%% thf(spec, logic, $$dhol).
% 2.11/1.42  
% 2.11/1.42  % SZS output start ListOfTHF for /export/starexec/sandbox2/tmp/tmp.p3DyBkhLYx/DTF2DTF24372.p
% See solution above
% 2.11/1.42  ------------------------
% 2.11/1.43  ---- Cleaned THF ---
% 2.11/1.43  thf(in_type,type,
% 2.11/1.43      in: $i > $i > $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exu_type,type,
% 2.11/1.43      exu: ( $i > $o ) > $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exu,definition,
% 2.11/1.43      ( exu
% 2.11/1.43      = ( ^ [Xphi: $i > $o] :
% 2.11/1.43          ? [Xx: $i] :
% 2.11/1.43            ( ( Xphi @ Xx )
% 2.11/1.43            & ! [Xy: $i] :
% 2.11/1.43                ( ( Xphi @ Xy )
% 2.11/1.43               => ( Xx = Xy ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setextAx_type,type,
% 2.11/1.43      setextAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setextAx,definition,
% 2.11/1.43      ( setextAx
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43              <=> ( in @ Xx @ B ) )
% 2.11/1.43           => ( A = B ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyset_type,type,
% 2.11/1.43      emptyset: $i ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetAx_type,type,
% 2.11/1.43      emptysetAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetAx,definition,
% 2.11/1.43      ( emptysetAx
% 2.11/1.43      = ( ! [Xx: $i] :
% 2.11/1.43            ~ ( in @ Xx @ emptyset ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoin_type,type,
% 2.11/1.43      setadjoin: $i > $i > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinAx_type,type,
% 2.11/1.43      setadjoinAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinAx,definition,
% 2.11/1.43      ( setadjoinAx
% 2.11/1.43      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.11/1.43          <=> ( ( Xy = Xx )
% 2.11/1.43              | ( in @ Xy @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(powerset_type,type,
% 2.11/1.43      powerset: $i > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetAx_type,type,
% 2.11/1.43      powersetAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetAx,definition,
% 2.11/1.43      ( powersetAx
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ( in @ B @ ( powerset @ A ) )
% 2.11/1.43          <=> ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ B )
% 2.11/1.43               => ( in @ Xx @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setunion_type,type,
% 2.11/1.43      setunion: $i > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionAx_type,type,
% 2.11/1.43      setunionAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionAx,definition,
% 2.11/1.43      ( setunionAx
% 2.11/1.43      = ( ! [A: $i,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ ( setunion @ A ) )
% 2.11/1.43          <=> ? [B: $i] :
% 2.11/1.43                ( ( in @ Xx @ B )
% 2.11/1.43                & ( in @ B @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(omega_type,type,
% 2.11/1.43      omega: $i ).
% 2.11/1.43  
% 2.11/1.43  thf(omega0Ax_type,type,
% 2.11/1.43      omega0Ax: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(omega0Ax,definition,
% 2.11/1.43      ( omega0Ax
% 2.11/1.43      = ( in @ emptyset @ omega ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(omegaSAx_type,type,
% 2.11/1.43      omegaSAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(omegaSAx,definition,
% 2.11/1.43      ( omegaSAx
% 2.11/1.43      = ( ! [Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ omega )
% 2.11/1.43           => ( in @ ( setadjoin @ Xx @ Xx ) @ omega ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(omegaIndAx_type,type,
% 2.11/1.43      omegaIndAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(omegaIndAx,definition,
% 2.11/1.43      ( omegaIndAx
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ( ( in @ emptyset @ A )
% 2.11/1.43              & ! [Xx: $i] :
% 2.11/1.43                  ( ( ( in @ Xx @ omega )
% 2.11/1.43                    & ( in @ Xx @ A ) )
% 2.11/1.43                 => ( in @ ( setadjoin @ Xx @ Xx ) @ A ) ) )
% 2.11/1.43           => ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ omega )
% 2.11/1.43               => ( in @ Xx @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(replAx_type,type,
% 2.11/1.43      replAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(replAx,definition,
% 2.11/1.43      ( replAx
% 2.11/1.43      = ( ! [Xphi: $i > $i > $o,A: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43               => ( exu
% 2.11/1.43                  @ ^ [Xy: $i] : ( Xphi @ Xx @ Xy ) ) )
% 2.11/1.43           => ? [B: $i] :
% 2.11/1.43              ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ B )
% 2.11/1.43              <=> ? [Xy: $i] :
% 2.11/1.43                    ( ( in @ Xy @ A )
% 2.11/1.43                    & ( Xphi @ Xy @ Xx ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(foundationAx_type,type,
% 2.11/1.43      foundationAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(foundationAx,definition,
% 2.11/1.43      ( foundationAx
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ? [Xx: $i] : ( in @ Xx @ A )
% 2.11/1.43           => ? [B: $i] :
% 2.11/1.43                ( ( in @ B @ A )
% 2.11/1.43                & ~ ? [Xx: $i] :
% 2.11/1.43                      ( ( in @ Xx @ B )
% 2.11/1.43                      & ( in @ Xx @ A ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(wellorderingAx_type,type,
% 2.11/1.43      wellorderingAx: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(wellorderingAx,definition,
% 2.11/1.43      ( wellorderingAx
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43          ? [B: $i] :
% 2.11/1.43            ( ! [C: $i] :
% 2.11/1.43                ( ( in @ C @ B )
% 2.11/1.43               => ! [Xx: $i] :
% 2.11/1.43                    ( ( in @ Xx @ C )
% 2.11/1.43                   => ( in @ Xx @ A ) ) )
% 2.11/1.43            & ! [Xx: $i,Xy: $i] :
% 2.11/1.43                ( ( ( in @ Xx @ A )
% 2.11/1.43                  & ( in @ Xy @ A ) )
% 2.11/1.43               => ( ! [C: $i] :
% 2.11/1.43                      ( ( in @ C @ B )
% 2.11/1.43                     => ( ( in @ Xx @ C )
% 2.11/1.43                      <=> ( in @ Xy @ C ) ) )
% 2.11/1.43                 => ( Xx = Xy ) ) )
% 2.11/1.43            & ! [C: $i,D: $i] :
% 2.11/1.43                ( ( ( in @ C @ B )
% 2.11/1.43                  & ( in @ D @ B ) )
% 2.11/1.43               => ( ! [Xx: $i] :
% 2.11/1.43                      ( ( in @ Xx @ C )
% 2.11/1.43                     => ( in @ Xx @ D ) )
% 2.11/1.43                  | ! [Xx: $i] :
% 2.11/1.43                      ( ( in @ Xx @ D )
% 2.11/1.43                     => ( in @ Xx @ C ) ) ) )
% 2.11/1.43            & ! [C: $i] :
% 2.11/1.43                ( ( ! [Xx: $i] :
% 2.11/1.43                      ( ( in @ Xx @ C )
% 2.11/1.43                     => ( in @ Xx @ A ) )
% 2.11/1.43                  & ? [Xx: $i] : ( in @ Xx @ C ) )
% 2.11/1.43               => ? [D: $i,Xx: $i] :
% 2.11/1.43                    ( ( in @ D @ B )
% 2.11/1.43                    & ( in @ Xx @ C )
% 2.11/1.43                    & ~ ? [Xy: $i] :
% 2.11/1.43                          ( ( in @ Xy @ D )
% 2.11/1.43                          & ( in @ Xy @ C ) )
% 2.11/1.43                    & ! [E: $i] :
% 2.11/1.43                        ( ( in @ E @ B )
% 2.11/1.43                       => ( ! [Xy: $i] :
% 2.11/1.43                              ( ( in @ Xy @ E )
% 2.11/1.43                             => ( in @ Xy @ D ) )
% 2.11/1.43                          | ( in @ Xx @ E ) ) ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(descr_type,type,
% 2.11/1.43      descr: ( $i > $o ) > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(descrp_type,type,
% 2.11/1.43      descrp: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(descrp,definition,
% 2.11/1.43      ( descrp
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43           => ( Xphi
% 2.11/1.43              @ ( descr
% 2.11/1.43                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstr_type,type,
% 2.11/1.43      dsetconstr: $i > ( $i > $o ) > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrI_type,type,
% 2.11/1.43      dsetconstrI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrI,definition,
% 2.11/1.43      ( dsetconstrI
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ A )
% 2.11/1.43           => ( ( Xphi @ Xx )
% 2.11/1.43             => ( in @ Xx
% 2.11/1.43                @ ( dsetconstr @ A
% 2.11/1.43                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrEL_type,type,
% 2.11/1.43      dsetconstrEL: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrEL,definition,
% 2.11/1.43      ( dsetconstrEL
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx
% 2.11/1.43              @ ( dsetconstr @ A
% 2.11/1.43                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.11/1.43           => ( in @ Xx @ A ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrER_type,type,
% 2.11/1.43      dsetconstrER: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(dsetconstrER,definition,
% 2.11/1.43      ( dsetconstrER
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx
% 2.11/1.43              @ ( dsetconstr @ A
% 2.11/1.43                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.11/1.43           => ( Xphi @ Xx ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE1_type,type,
% 2.11/1.43      exuE1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE1,definition,
% 2.11/1.43      ( exuE1
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43           => ? [Xx: $i] :
% 2.11/1.43                ( ( Xphi @ Xx )
% 2.11/1.43                & ! [Xy: $i] :
% 2.11/1.43                    ( ( Xphi @ Xy )
% 2.11/1.43                   => ( Xx = Xy ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2set_type,type,
% 2.11/1.43      prop2set: $o > $i ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2setE_type,type,
% 2.11/1.43      prop2setE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2setE,definition,
% 2.11/1.43      ( prop2setE
% 2.11/1.43      = ( ! [Xphi: $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ ( prop2set @ Xphi ) )
% 2.11/1.43           => Xphi ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetE_type,type,
% 2.11/1.43      emptysetE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetE,definition,
% 2.11/1.43      ( emptysetE
% 2.11/1.43      = ( ! [Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ emptyset )
% 2.11/1.43           => ! [Xphi: $o] : Xphi ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetimpfalse_type,type,
% 2.11/1.43      emptysetimpfalse: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptysetimpfalse,definition,
% 2.11/1.43      ( emptysetimpfalse
% 2.11/1.43      = ( ! [Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ emptyset )
% 2.11/1.43           => $false ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(notinemptyset_type,type,
% 2.11/1.43      notinemptyset: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(notinemptyset,definition,
% 2.11/1.43      ( notinemptyset
% 2.11/1.43      = ( ! [Xx: $i] :
% 2.11/1.43            ~ ( in @ Xx @ emptyset ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE3e_type,type,
% 2.11/1.43      exuE3e: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE3e,definition,
% 2.11/1.43      ( exuE3e
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43           => ? [Xx: $i] : ( Xphi @ Xx ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setext_type,type,
% 2.11/1.43      setext: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setext,definition,
% 2.11/1.43      ( setext
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43               => ( in @ Xx @ B ) )
% 2.11/1.43           => ( ! [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ B )
% 2.11/1.43                 => ( in @ Xx @ A ) )
% 2.11/1.43             => ( A = B ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyI_type,type,
% 2.11/1.43      emptyI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyI,definition,
% 2.11/1.43      ( emptyI
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ~ ( in @ Xx @ A )
% 2.11/1.43           => ( A = emptyset ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(noeltsimpempty_type,type,
% 2.11/1.43      noeltsimpempty: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(noeltsimpempty,definition,
% 2.11/1.43      ( noeltsimpempty
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ~ ( in @ Xx @ A )
% 2.11/1.43           => ( A = emptyset ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setbeta_type,type,
% 2.11/1.43      setbeta: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setbeta,definition,
% 2.11/1.43      ( setbeta
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ A )
% 2.11/1.43           => ( ( in @ Xx
% 2.11/1.43                @ ( dsetconstr @ A
% 2.11/1.43                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.11/1.43            <=> ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(nonempty_type,type,
% 2.11/1.43      nonempty: $i > $o ).
% 2.11/1.43  
% 2.11/1.43  thf(nonempty,definition,
% 2.11/1.43      ( nonempty
% 2.11/1.43      = ( ^ [Xx: $i] : ( Xx != emptyset ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyE1_type,type,
% 2.11/1.43      nonemptyE1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyE1,definition,
% 2.11/1.43      ( nonemptyE1
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ( nonempty @ A )
% 2.11/1.43           => ? [Xx: $i] : ( in @ Xx @ A ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyI_type,type,
% 2.11/1.43      nonemptyI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyI,definition,
% 2.11/1.43      ( nonemptyI
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ A )
% 2.11/1.43           => ( ( Xphi @ Xx )
% 2.11/1.43             => ( nonempty
% 2.11/1.43                @ ( dsetconstr @ A
% 2.11/1.43                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyI1_type,type,
% 2.11/1.43      nonemptyI1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyI1,definition,
% 2.11/1.43      ( nonemptyI1
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ? [Xx: $i] : ( in @ Xx @ A )
% 2.11/1.43           => ( nonempty @ A ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinIL_type,type,
% 2.11/1.43      setadjoinIL: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinIL,definition,
% 2.11/1.43      ( setadjoinIL
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ Xy ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyinunitempty_type,type,
% 2.11/1.43      emptyinunitempty: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyinunitempty,definition,
% 2.11/1.43      ( emptyinunitempty
% 2.11/1.43      = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinIR_type,type,
% 2.11/1.43      setadjoinIR: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinIR,definition,
% 2.11/1.43      ( setadjoinIR
% 2.11/1.43      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xy @ A )
% 2.11/1.43           => ( in @ Xy @ ( setadjoin @ Xx @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinE_type,type,
% 2.11/1.43      setadjoinE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinE,definition,
% 2.11/1.43      ( setadjoinE
% 2.11/1.43      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.11/1.43           => ! [Xphi: $o] :
% 2.11/1.43                ( ( ( Xy = Xx )
% 2.11/1.43                 => Xphi )
% 2.11/1.43               => ( ( ( in @ Xy @ A )
% 2.11/1.43                   => Xphi )
% 2.11/1.43                 => Xphi ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinOr_type,type,
% 2.11/1.43      setadjoinOr: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoinOr,definition,
% 2.11/1.43      ( setadjoinOr
% 2.11/1.43      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.11/1.43           => ( ( Xy = Xx )
% 2.11/1.43              | ( in @ Xy @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setoftrueEq_type,type,
% 2.11/1.43      setoftrueEq: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setoftrueEq,definition,
% 2.11/1.43      ( setoftrueEq
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ( dsetconstr @ A
% 2.11/1.43              @ ^ [Xx: $i] : $true )
% 2.11/1.43            = A ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetI_type,type,
% 2.11/1.43      powersetI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetI,definition,
% 2.11/1.43      ( powersetI
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ B )
% 2.11/1.43               => ( in @ Xx @ A ) )
% 2.11/1.43           => ( in @ B @ ( powerset @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyinPowerset_type,type,
% 2.11/1.43      emptyinPowerset: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyinPowerset,definition,
% 2.11/1.43      ( emptyinPowerset
% 2.11/1.43      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyInPowerset_type,type,
% 2.11/1.43      emptyInPowerset: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyInPowerset,definition,
% 2.11/1.43      ( emptyInPowerset
% 2.11/1.43      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetE_type,type,
% 2.11/1.43      powersetE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(powersetE,definition,
% 2.11/1.43      ( powersetE
% 2.11/1.43      = ( ! [A: $i,B: $i,Xx: $i] :
% 2.11/1.43            ( ( in @ B @ ( powerset @ A ) )
% 2.11/1.43           => ( ( in @ Xx @ B )
% 2.11/1.43             => ( in @ Xx @ A ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionI_type,type,
% 2.11/1.43      setunionI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionI,definition,
% 2.11/1.43      ( setunionI
% 2.11/1.43      = ( ! [A: $i,Xx: $i,B: $i] :
% 2.11/1.43            ( ( in @ Xx @ B )
% 2.11/1.43           => ( ( in @ B @ A )
% 2.11/1.43             => ( in @ Xx @ ( setunion @ A ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionE_type,type,
% 2.11/1.43      setunionE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(setunionE,definition,
% 2.11/1.43      ( setunionE
% 2.11/1.43      = ( ! [A: $i,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ ( setunion @ A ) )
% 2.11/1.43           => ! [Xphi: $o] :
% 2.11/1.43                ( ! [B: $i] :
% 2.11/1.43                    ( ( in @ Xx @ B )
% 2.11/1.43                   => ( ( in @ B @ A )
% 2.11/1.43                     => Xphi ) )
% 2.11/1.43               => Xphi ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(subPowSU_type,type,
% 2.11/1.43      subPowSU: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(subPowSU,definition,
% 2.11/1.43      ( subPowSU
% 2.11/1.43      = ( ! [A: $i,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ A )
% 2.11/1.43           => ( in @ Xx @ ( powerset @ ( setunion @ A ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE2_type,type,
% 2.11/1.43      exuE2: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE2,definition,
% 2.11/1.43      ( exuE2
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43           => ? [Xx: $i] :
% 2.11/1.43              ! [Xy: $i] :
% 2.11/1.43                ( ( Xphi @ Xy )
% 2.11/1.43              <=> ( Xy = Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyImpWitness_type,type,
% 2.11/1.43      nonemptyImpWitness: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(nonemptyImpWitness,definition,
% 2.11/1.43      ( nonemptyImpWitness
% 2.11/1.43      = ( ! [A: $i] :
% 2.11/1.43            ( ( nonempty @ A )
% 2.11/1.43           => ? [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43                & $true ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(uniqinunit_type,type,
% 2.11/1.43      uniqinunit: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(uniqinunit,definition,
% 2.11/1.43      ( uniqinunit
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 2.11/1.43           => ( Xx = Xy ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(notinsingleton_type,type,
% 2.11/1.43      notinsingleton: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(notinsingleton,definition,
% 2.11/1.43      ( notinsingleton
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43            ( ( Xx != Xy )
% 2.11/1.43           => ~ ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(eqinunit_type,type,
% 2.11/1.43      eqinunit: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(eqinunit,definition,
% 2.11/1.43      ( eqinunit
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43            ( ( Xx = Xy )
% 2.11/1.43           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(singletonsswitch_type,type,
% 2.11/1.43      singletonsswitch: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(singletonsswitch,definition,
% 2.11/1.43      ( singletonsswitch
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 2.11/1.43           => ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetE_type,type,
% 2.11/1.43      upairsetE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetE,definition,
% 2.11/1.43      ( upairsetE
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i,Xz: $i] :
% 2.11/1.43            ( ( in @ Xz @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) )
% 2.11/1.43           => ( ( Xz = Xx )
% 2.11/1.43              | ( Xz = Xy ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetIL_type,type,
% 2.11/1.43      upairsetIL: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetIL,definition,
% 2.11/1.43      ( upairsetIL
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetIR_type,type,
% 2.11/1.43      upairsetIR: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(upairsetIR,definition,
% 2.11/1.43      ( upairsetIR
% 2.11/1.43      = ( ! [Xx: $i,Xy: $i] : ( in @ Xy @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyE1_type,type,
% 2.11/1.43      emptyE1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyE1,definition,
% 2.11/1.43      ( emptyE1
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ? [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43                & ( Xphi @ Xx ) )
% 2.11/1.43           => ( ( ( dsetconstr @ A
% 2.11/1.43                  @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43                = emptyset )
% 2.11/1.43             => $false ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(vacuousDall_type,type,
% 2.11/1.43      vacuousDall: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(vacuousDall,definition,
% 2.11/1.43      ( vacuousDall
% 2.11/1.43      = ( ! [Xphi: $i > $o,Xx: $i] :
% 2.11/1.43            ( ( in @ Xx @ emptyset )
% 2.11/1.43           => ( Xphi @ Xx ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan1_type,type,
% 2.11/1.43      quantDeMorgan1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan1,definition,
% 2.11/1.43      ( quantDeMorgan1
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ~ ! [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                 => ( Xphi @ Xx ) )
% 2.11/1.43           => ? [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan2_type,type,
% 2.11/1.43      quantDeMorgan2: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan2,definition,
% 2.11/1.43      ( quantDeMorgan2
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43               => ~ ( Xphi @ Xx ) )
% 2.11/1.43           => ~ ? [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                  & ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan3_type,type,
% 2.11/1.43      quantDeMorgan3: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan3,definition,
% 2.11/1.43      ( quantDeMorgan3
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ~ ? [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                  & ( Xphi @ Xx ) )
% 2.11/1.43           => ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan4_type,type,
% 2.11/1.43      quantDeMorgan4: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(quantDeMorgan4,definition,
% 2.11/1.43      ( quantDeMorgan4
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ? [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43                & ~ ( Xphi @ Xx ) )
% 2.11/1.43           => ~ ! [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                 => ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2setI_type,type,
% 2.11/1.43      prop2setI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2setI,definition,
% 2.11/1.43      ( prop2setI
% 2.11/1.43      = ( ! [Xphi: $o] :
% 2.11/1.43            ( Xphi
% 2.11/1.43           => ( in @ emptyset @ ( prop2set @ Xphi ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(set2prop_type,type,
% 2.11/1.43      set2prop: $i > $o ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2set2propI_type,type,
% 2.11/1.43      prop2set2propI: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(prop2set2propI,definition,
% 2.11/1.43      ( prop2set2propI
% 2.11/1.43      = ( ! [Xphi: $o] :
% 2.11/1.43            ( Xphi
% 2.11/1.43           => ( set2prop @ ( prop2set @ Xphi ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(notdexE_type,type,
% 2.11/1.43      notdexE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(notdexE,definition,
% 2.11/1.43      ( notdexE
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ~ ? [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                  & ( Xphi @ Xx ) )
% 2.11/1.43           => ! [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(notdallE_type,type,
% 2.11/1.43      notdallE: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(notdallE,definition,
% 2.11/1.43      ( notdallE
% 2.11/1.43      = ( ! [A: $i,Xphi: $i > $o] :
% 2.11/1.43            ( ~ ! [Xx: $i] :
% 2.11/1.43                  ( ( in @ Xx @ A )
% 2.11/1.43                 => ( Xphi @ Xx ) )
% 2.11/1.43           => ? [Xx: $i] :
% 2.11/1.43                ( ( in @ Xx @ A )
% 2.11/1.43                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI1_type,type,
% 2.11/1.43      exuI1: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI1,definition,
% 2.11/1.43      ( exuI1
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ? [Xx: $i] :
% 2.11/1.43                ( ( Xphi @ Xx )
% 2.11/1.43                & ! [Xy: $i] :
% 2.11/1.43                    ( ( Xphi @ Xy )
% 2.11/1.43                   => ( Xx = Xy ) ) )
% 2.11/1.43           => ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI3_type,type,
% 2.11/1.43      exuI3: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI3,definition,
% 2.11/1.43      ( exuI3
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ? [Xx: $i] : ( Xphi @ Xx )
% 2.11/1.43           => ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43                  ( ( Xphi @ Xx )
% 2.11/1.43                 => ( ( Xphi @ Xy )
% 2.11/1.43                   => ( Xx = Xy ) ) )
% 2.11/1.43             => ( exu
% 2.11/1.43                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI2_type,type,
% 2.11/1.43      exuI2: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuI2,definition,
% 2.11/1.43      ( exuI2
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ? [Xx: $i] :
% 2.11/1.43              ! [Xy: $i] :
% 2.11/1.43                ( ( Xphi @ Xy )
% 2.11/1.43              <=> ( Xy = Xx ) )
% 2.11/1.43           => ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(inCongP_type,type,
% 2.11/1.43      inCongP: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(inCongP,definition,
% 2.11/1.43      ( inCongP
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ( A = B )
% 2.11/1.43           => ! [Xx: $i,Xy: $i] :
% 2.11/1.43                ( ( Xx = Xy )
% 2.11/1.43               => ( ( in @ Xx @ A )
% 2.11/1.43                 => ( in @ Xy @ B ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(in__Cong_type,type,
% 2.11/1.43      in__Cong: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(in__Cong,definition,
% 2.11/1.43      ( in__Cong
% 2.11/1.43      = ( ! [A: $i,B: $i] :
% 2.11/1.43            ( ( A = B )
% 2.11/1.43           => ! [Xx: $i,Xy: $i] :
% 2.11/1.43                ( ( Xx = Xy )
% 2.11/1.43               => ( ( in @ Xx @ A )
% 2.11/1.43                <=> ( in @ Xy @ B ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE3u_type,type,
% 2.11/1.43      exuE3u: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exuE3u,definition,
% 2.11/1.43      ( exuE3u
% 2.11/1.43      = ( ! [Xphi: $i > $o] :
% 2.11/1.43            ( ( exu
% 2.11/1.43              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43           => ! [Xx: $i,Xy: $i] :
% 2.11/1.43                ( ( Xphi @ Xx )
% 2.11/1.43               => ( ( Xphi @ Xy )
% 2.11/1.43                 => ( Xx = Xy ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(exu__Cong_type,type,
% 2.11/1.43      exu__Cong: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(exu__Cong,definition,
% 2.11/1.43      ( exu__Cong
% 2.11/1.43      = ( ! [Xphi: $i > $o,Xpsi: $i > $o] :
% 2.11/1.43            ( ! [Xx: $i,Xy: $i] :
% 2.11/1.43                ( ( Xx = Xy )
% 2.11/1.43               => ( ( Xphi @ Xx )
% 2.11/1.43                <=> ( Xpsi @ Xy ) ) )
% 2.11/1.43           => ( ( exu
% 2.11/1.43                @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.11/1.43            <=> ( exu
% 2.11/1.43                @ ^ [Xx: $i] : ( Xpsi @ Xx ) ) ) ) ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyset__Cong_type,type,
% 2.11/1.43      emptyset__Cong: $o ).
% 2.11/1.43  
% 2.11/1.43  thf(emptyset__Cong,definition,
% 2.11/1.43      ( emptyset__Cong
% 2.11/1.43      = ( emptyset = emptyset ) ) ).
% 2.11/1.43  
% 2.11/1.43  thf(setadjoin__Cong,conjecture,
% 2.11/1.43      ( setextAx
% 2.11/1.43     => ( emptysetAx
% 2.11/1.43       => ( setadjoinAx
% 2.11/1.43         => ( powersetAx
% 2.11/1.43           => ( setunionAx
% 2.11/1.43             => ( omega0Ax
% 2.11/1.43               => ( omegaSAx
% 2.11/1.43                 => ( omegaIndAx
% 2.11/1.43                   => ( replAx
% 2.11/1.43                     => ( foundationAx
% 2.11/1.43                       => ( wellorderingAx
% 2.11/1.43                         => ( descrp
% 2.11/1.43                           => ( dsetconstrI
% 2.11/1.43                             => ( dsetconstrEL
% 2.11/1.43                               => ( dsetconstrER
% 2.11/1.43                                 => ( exuE1
% 2.11/1.43                                   => ( prop2setE
% 2.11/1.43                                     => ( emptysetE
% 2.11/1.43                                       => ( emptysetimpfalse
% 2.11/1.43                                         => ( notinemptyset
% 2.11/1.43                                           => ( exuE3e
% 2.11/1.43                                             => ( setext
% 2.11/1.43                                               => ( emptyI
% 2.11/1.43                                                 => ( noeltsimpempty
% 2.11/1.43                                                   => ( setbeta
% 2.11/1.43                                                     => ( nonemptyE1
% 2.11/1.43                                                       => ( nonemptyI
% 2.11/1.43                                                         => ( nonemptyI1
% 2.11/1.43                                                           => ( setadjoinIL
% 2.11/1.43                                                             => ( emptyinunitempty
% 2.11/1.43                                                               => ( setadjoinIR
% 2.11/1.43                                                                 => ( setadjoinE
% 2.11/1.43                                                                   => ( setadjoinOr
% 2.11/1.43                                                                     => ( setoftrueEq
% 2.11/1.43                                                                       => ( powersetI
% 2.11/1.43                                                                         => ( emptyinPowerset
% 2.11/1.43                                                                           => ( emptyInPowerset
% 2.11/1.43                                                                             => ( powersetE
% 2.11/1.43                                                                               => ( setunionI
% 2.11/1.43                                                                                 => ( setunionE
% 2.11/1.43                                                                                   => ( subPowSU
% 2.11/1.43                                                                                     => ( exuE2
% 2.11/1.43                                                                                       => ( nonemptyImpWitness
% 2.11/1.43                                                                                         => ( uniqinunit
% 2.11/1.43                                                                                           => ( notinsingleton
% 2.11/1.43                                                                                             => ( eqinunit
% 2.11/1.43                                                                                               => ( singletonsswitch
% 2.11/1.43                                                                                                 => ( upairsetE
% 2.11/1.43                                                                                                   => ( upairsetIL
% 2.11/1.43                                                                                                     => ( upairsetIR
% 2.11/1.43                                                                                                       => ( emptyE1
% 2.11/1.43                                                                                                         => ( vacuousDall
% 2.11/1.43                                                                                                           => ( quantDeMorgan1
% 2.11/1.43                                                                                                             => ( quantDeMorgan2
% 2.11/1.43                                                                                                               => ( quantDeMorgan3
% 2.11/1.43                                                                                                                 => ( quantDeMorgan4
% 2.11/1.43                                                                                                                   => ( prop2setI
% 2.11/1.43                                                                                                                     => ( prop2set2propI
% 2.11/1.43                                                                                                                       => ( notdexE
% 2.11/1.43                                                                                                                         => ( notdallE
% 2.11/1.43                                                                                                                           => ( exuI1
% 2.11/1.43                                                                                                                             => ( exuI3
% 2.11/1.43                                                                                                                               => ( exuI2
% 2.11/1.43                                                                                                                                 => ( inCongP
% 2.11/1.43                                                                                                                                   => ( in__Cong
% 2.11/1.43                                                                                                                                     => ( exuE3u
% 2.11/1.43                                                                                                                                       => ( exu__Cong
% 2.11/1.43                                                                                                                                         => ( emptyset__Cong
% 2.11/1.43                                                                                                                                           => ! [Xx: $i,Xy: $i] :
% 2.11/1.43                                                                                                                                                ( ( Xx = Xy )
% 2.11/1.43                                                                                                                                               => ! [Xz: $i,Xu: $i] :
% 2.11/1.43                                                                                                                                                    ( ( Xz = Xu )
% 2.11/1.43                                                                                                                                                   => ( ( setadjoin @ Xx @ Xz )
% 2.11/1.43                                                                                                                                                      = ( setadjoin @ Xy @ Xu ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).
% 2.11/1.43  ------------------------
% 2.11/1.45  % (24523)lrs+10_1:1_c=on:cnfonf=conj_eager:fd=off:fe=off:kws=frequency:spb=intro:i=4:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/4Mi)
% 2.11/1.45  % (24524)dis+1010_1:1_au=on:cbe=off:chr=on:fsr=off:hfsq=on:nm=64:sos=theory:sp=weighted_frequency:i=27:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/27Mi)
% 2.11/1.45  % (24525)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/2Mi)
% 2.11/1.45  % (24526)lrs+1002_1:128_aac=none:au=on:cnfonf=lazy_not_gen_be_off:sos=all:i=2:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/2Mi)
% 2.11/1.45  % (24525)Instruction limit reached!
% 2.11/1.45  % (24525)------------------------------
% 2.11/1.45  % (24525)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.45  % (24525)Termination reason: Unknown
% 2.11/1.45  % (24525)Termination phase: shuffling
% 2.11/1.45  
% 2.11/1.45  % (24525)Memory used [KB]: 1151
% 2.11/1.45  % (24525)Time elapsed: 0.002 s
% 2.11/1.45  % (24525)Instructions burned: 3 (million)
% 2.11/1.45  % (24525)------------------------------
% 2.11/1.45  % (24525)------------------------------
% 2.11/1.45  % (24522)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/183Mi)
% 2.11/1.45  % (24526)Instruction limit reached!
% 2.11/1.45  % (24526)------------------------------
% 2.11/1.45  % (24526)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.45  % (24526)Termination reason: Unknown
% 2.11/1.45  % (24526)Termination phase: shuffling
% 2.11/1.45  
% 2.11/1.45  % (24526)Memory used [KB]: 1151
% 2.11/1.45  % (24526)Time elapsed: 0.002 s
% 2.11/1.45  % (24526)Instructions burned: 2 (million)
% 2.11/1.45  % (24526)------------------------------
% 2.11/1.45  % (24526)------------------------------
% 2.11/1.46  % (24528)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/18Mi)
% 2.11/1.46  % (24527)lrs+1002_1:1_au=on:bd=off:e2e=on:sd=2:sos=on:ss=axioms:i=275:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/275Mi)
% 2.11/1.46  % (24523)Instruction limit reached!
% 2.11/1.46  % (24523)------------------------------
% 2.11/1.46  % (24523)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.46  % (24523)Termination reason: Unknown
% 2.11/1.46  % (24523)Termination phase: shuffling
% 2.11/1.46  
% 2.11/1.46  % (24523)Memory used [KB]: 1151
% 2.11/1.46  % (24523)Time elapsed: 0.004 s
% 2.11/1.46  % (24523)Instructions burned: 4 (million)
% 2.11/1.46  % (24523)------------------------------
% 2.11/1.46  % (24523)------------------------------
% 2.11/1.46  % (24529)lrs+10_1:1_bet=on:cnfonf=off:fd=off:hud=5:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/3Mi)
% 2.11/1.46  % (24529)Instruction limit reached!
% 2.11/1.46  % (24529)------------------------------
% 2.11/1.46  % (24529)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.46  % (24529)Termination reason: Unknown
% 2.11/1.46  % (24529)Termination phase: shuffling
% 2.11/1.46  
% 2.11/1.46  % (24529)Memory used [KB]: 1151
% 2.11/1.46  % (24529)Time elapsed: 0.003 s
% 2.11/1.46  % (24529)Instructions burned: 4 (million)
% 2.11/1.46  % (24529)------------------------------
% 2.11/1.46  % (24529)------------------------------
% 2.11/1.46  % (24530)lrs+1002_1:1_cnfonf=lazy_not_be_gen:hud=14:prag=on:sp=weighted_frequency:tnu=1:i=37:si=on:rtra=on_0 on DTF2THF_24372 for (2999ds/37Mi)
% 2.11/1.46  % (24524)Instruction limit reached!
% 2.11/1.46  % (24524)------------------------------
% 2.11/1.46  % (24524)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.46  % (24524)Termination reason: Unknown
% 2.11/1.46  % (24524)Termination phase: Property scanning
% 2.11/1.46  
% 2.11/1.46  % (24524)Memory used [KB]: 1407
% 2.11/1.46  % (24524)Time elapsed: 0.014 s
% 2.11/1.46  % (24524)Instructions burned: 28 (million)
% 2.11/1.46  % (24524)------------------------------
% 2.11/1.46  % (24524)------------------------------
% 2.11/1.46  % (24528)Instruction limit reached!
% 2.11/1.46  % (24528)------------------------------
% 2.11/1.46  % (24528)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.46  % (24528)Termination reason: Unknown
% 2.11/1.46  % (24528)Termination phase: Preprocessing 3
% 2.11/1.46  
% 2.11/1.46  % (24528)Memory used [KB]: 1663
% 2.11/1.46  % (24528)Time elapsed: 0.007 s
% 2.11/1.46  % (24528)Instructions burned: 19 (million)
% 2.11/1.46  % (24528)------------------------------
% 2.11/1.46  % (24528)------------------------------
% 2.11/1.46  % (24522)First to succeed.
% 2.11/1.47  % (24522)Refutation found. Thanks to Tanya!
% 2.11/1.47  % SZS status Theorem for DTF2THF_24372
% 2.11/1.47  % SZS output start Proof for DTF2THF_24372
% 2.11/1.47  thf(func_def_0, type, in: $i > $i > $o).
% 2.11/1.47  thf(func_def_1, type, exu: ($i > $o) > $o).
% 2.11/1.47  thf(func_def_6, type, setadjoin: $i > $i > $i).
% 2.11/1.47  thf(func_def_8, type, powerset: $i > $i).
% 2.11/1.47  thf(func_def_10, type, setunion: $i > $i).
% 2.11/1.47  thf(func_def_19, type, descr: ($i > $o) > $i).
% 2.11/1.47  thf(func_def_21, type, dsetconstr: $i > ($i > $o) > $i).
% 2.11/1.47  thf(func_def_26, type, prop2set: $o > $i).
% 2.11/1.47  thf(func_def_36, type, nonempty: $i > $o).
% 2.11/1.47  thf(func_def_69, type, set2prop: $i > $o).
% 2.11/1.47  thf(func_def_102, type, sK5: $i > $i > $i).
% 2.11/1.47  thf(func_def_103, type, sK6: $i > $i > $i).
% 2.11/1.47  thf(func_def_104, type, sK7: $o > $i > $i > $i).
% 2.11/1.47  thf(func_def_105, type, sK8: $i > $i).
% 2.11/1.47  thf(func_def_106, type, sK9: ($i > $o) > $i).
% 2.11/1.47  thf(func_def_107, type, sK10: ($i > $o) > $i > $i).
% 2.11/1.47  thf(func_def_108, type, sK11: ($i > $o) > $i > $i).
% 2.11/1.47  thf(func_def_109, type, sK12: $i > $i).
% 2.11/1.47  thf(func_def_110, type, sK13: $i > ($i > $o) > $i).
% 2.11/1.47  thf(f567,plain,(
% 2.11/1.47    $false),
% 2.11/1.47    inference(trivial_inequality_removal,[status(thm)],[f361])).
% 2.11/1.47  thf(f361,plain,(
% 2.11/1.47    ((setadjoin @ sK0 @ sK2) != (setadjoin @ sK0 @ sK2))),
% 2.11/1.47    inference(definition_unfolding,[status(thm)],[f263,f264,f262])).
% 2.11/1.47  thf(f262,plain,(
% 2.11/1.47    (sK3 = sK2)),
% 2.11/1.47    inference(cnf_transformation,[status(thm)],[f215])).
% 2.11/1.47  thf(f215,plain,(
% 2.11/1.47    (quantDeMorgan3 = $true) & (prop2set2propI = $true) & (emptyset__Cong = $true) & (uniqinunit = $true) & (exuE3u = $true) & (exu__Cong = $true) & (notdallE = $true) & (replAx = $true) & (emptyInPowerset = $true) & (foundationAx = $true) & (upairsetIR = $true) & (emptyinPowerset = $true) & (setadjoinE = $true) & (quantDeMorgan4 = $true) & (powersetE = $true) & (exuI3 = $true) & (setunionI = $true) & (exuI2 = $true) & (emptysetimpfalse = $true) & (setbeta = $true) & (emptyI = $true) & (powersetAx = $true) & (setadjoinIR = $true) & (eqinunit = $true) & (setunionE = $true) & (exuE1 = $true) & (emptyE1 = $true) & (subPowSU = $true) & (nonemptyE1 = $true) & (noeltsimpempty = $true) & ((sK1 = sK0) & (((setadjoin @ sK0 @ sK2) != (setadjoin @ sK1 @ sK3)) & (sK3 = sK2))) & (setextAx = $true) & (omega0Ax = $true) & (nonemptyI = $true) & (inCongP = $true) & (in__Cong = $true) & (setadjoinOr = $true) & (prop2setI = $true) & (upairsetIL = $true) & (setadjoinIL = $true) & (omegaSAx = $true) & (exuI1 = $true) & (setadjoinAx = $true) & (dsetconstrER = $true) & (notinemptyset = $true) & (quantDeMorgan2 = $true) & (nonemptyI1 = $true) & (notinsingleton = $true) & (notdexE = $true) & (dsetconstrEL = $true) & (setoftrueEq = $true) & (quantDeMorgan1 = $true) & (setext = $true) & (singletonsswitch = $true) & (dsetconstrI = $true) & (emptysetAx = $true) & (wellorderingAx = $true) & (setunionAx = $true) & (vacuousDall = $true) & (exuE3e = $true) & (upairsetE = $true) & (descrp = $true) & (prop2setE = $true) & (emptyinunitempty = $true) & (powersetI = $true) & (omegaIndAx = $true) & (exuE2 = $true) & (emptysetE = $true) & (nonemptyImpWitness = $true)),
% 2.11/1.47    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3])],[f212,f214,f213])).
% 2.11/1.47  thf(f213,plain,(
% 2.11/1.47    ? [X0 : $i,X1 : $i] : ((X0 = X1) & ? [X2 : $i,X3 : $i] : (((setadjoin @ X1 @ X3) != (setadjoin @ X0 @ X2)) & (X2 = X3))) => ((sK1 = sK0) & ? [X3 : $i,X2 : $i] : (((setadjoin @ sK1 @ X3) != (setadjoin @ sK0 @ X2)) & (X2 = X3)))),
% 2.11/1.47    introduced(definition,[],[choice_axiom])).
% 2.11/1.47  thf(f214,plain,(
% 2.11/1.47    ? [X3 : $i,X2 : $i] : (((setadjoin @ sK1 @ X3) != (setadjoin @ sK0 @ X2)) & (X2 = X3)) => (((setadjoin @ sK0 @ sK2) != (setadjoin @ sK1 @ sK3)) & (sK3 = sK2))),
% 2.11/1.47    introduced(definition,[],[choice_axiom])).
% 2.11/1.47  thf(f212,plain,(
% 2.11/1.47    (quantDeMorgan3 = $true) & (prop2set2propI = $true) & (emptyset__Cong = $true) & (uniqinunit = $true) & (exuE3u = $true) & (exu__Cong = $true) & (notdallE = $true) & (replAx = $true) & (emptyInPowerset = $true) & (foundationAx = $true) & (upairsetIR = $true) & (emptyinPowerset = $true) & (setadjoinE = $true) & (quantDeMorgan4 = $true) & (powersetE = $true) & (exuI3 = $true) & (setunionI = $true) & (exuI2 = $true) & (emptysetimpfalse = $true) & (setbeta = $true) & (emptyI = $true) & (powersetAx = $true) & (setadjoinIR = $true) & (eqinunit = $true) & (setunionE = $true) & (exuE1 = $true) & (emptyE1 = $true) & (subPowSU = $true) & (nonemptyE1 = $true) & (noeltsimpempty = $true) & ? [X0 : $i,X1 : $i] : ((X0 = X1) & ? [X2 : $i,X3 : $i] : (((setadjoin @ X1 @ X3) != (setadjoin @ X0 @ X2)) & (X2 = X3))) & (setextAx = $true) & (omega0Ax = $true) & (nonemptyI = $true) & (inCongP = $true) & (in__Cong = $true) & (setadjoinOr = $true) & (prop2setI = $true) & (upairsetIL = $true) & (setadjoinIL = $true) & (omegaSAx = $true) & (exuI1 = $true) & (setadjoinAx = $true) & (dsetconstrER = $true) & (notinemptyset = $true) & (quantDeMorgan2 = $true) & (nonemptyI1 = $true) & (notinsingleton = $true) & (notdexE = $true) & (dsetconstrEL = $true) & (setoftrueEq = $true) & (quantDeMorgan1 = $true) & (setext = $true) & (singletonsswitch = $true) & (dsetconstrI = $true) & (emptysetAx = $true) & (wellorderingAx = $true) & (setunionAx = $true) & (vacuousDall = $true) & (exuE3e = $true) & (upairsetE = $true) & (descrp = $true) & (prop2setE = $true) & (emptyinunitempty = $true) & (powersetI = $true) & (omegaIndAx = $true) & (exuE2 = $true) & (emptysetE = $true) & (nonemptyImpWitness = $true)),
% 2.11/1.47    inference(flattening,[status(thm)],[f211])).
% 2.11/1.47  thf(f211,plain,(
% 2.11/1.47    (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((? [X0 : $i,X1 : $i] : ((X0 = X1) & ? [X2 : $i,X3 : $i] : (((setadjoin @ X1 @ X3) != (setadjoin @ X0 @ X2)) & (X2 = X3))) & (emptyset__Cong = $true)) & (exu__Cong = $true)) & (exuE3u = $true)) & (in__Cong = $true)) & (inCongP = $true)) & (exuI2 = $true)) & (exuI3 = $true)) & (exuI1 = $true)) & (notdallE = $true)) & (notdexE = $true)) & (prop2set2propI = $true)) & (prop2setI = $true)) & (quantDeMorgan4 = $true)) & (quantDeMorgan3 = $true)) & (quantDeMorgan2 = $true)) & (quantDeMorgan1 = $true)) & (vacuousDall = $true)) & (emptyE1 = $true)) & (upairsetIR = $true)) & (upairsetIL = $true)) & (upairsetE = $true)) & (singletonsswitch = $true)) & (eqinunit = $true)) & (notinsingleton = $true)) & (uniqinunit = $true)) & (nonemptyImpWitness = $true)) & (exuE2 = $true)) & (subPowSU = $true)) & (setunionE = $true)) & (setunionI = $true)) & (powersetE = $true)) & (emptyInPowerset = $true)) & (emptyinPowerset = $true)) & (powersetI = $true)) & (setoftrueEq = $true)) & (setadjoinOr = $true)) & (setadjoinE = $true)) & (setadjoinIR = $true)) & (emptyinunitempty = $true)) & (setadjoinIL = $true)) & (nonemptyI1 = $true)) & (nonemptyI = $true)) & (nonemptyE1 = $true)) & (setbeta = $true)) & (noeltsimpempty = $true)) & (emptyI = $true)) & (setext = $true)) & (exuE3e = $true)) & (notinemptyset = $true)) & (emptysetimpfalse = $true)) & (emptysetE = $true)) & (prop2setE = $true)) & (exuE1 = $true)) & (dsetconstrER = $true)) & (dsetconstrEL = $true)) & (dsetconstrI = $true)) & (descrp = $true)) & (wellorderingAx = $true)) & (foundationAx = $true)) & (replAx = $true)) & (omegaIndAx = $true)) & (omegaSAx = $true)) & (omega0Ax = $true)) & (setunionAx = $true)) & (powersetAx = $true)) & (setadjoinAx = $true)) & (emptysetAx = $true)) & (setextAx = $true)),
% 2.11/1.47    inference(ennf_transformation,[status(thm)],[f137])).
% 2.11/1.47  thf(f137,plain,(
% 2.11/1.47    ~((setextAx = $true) => ((emptysetAx = $true) => ((setadjoinAx = $true) => ((powersetAx = $true) => ((setunionAx = $true) => ((omega0Ax = $true) => ((omegaSAx = $true) => ((omegaIndAx = $true) => ((replAx = $true) => ((foundationAx = $true) => ((wellorderingAx = $true) => ((descrp = $true) => ((dsetconstrI = $true) => ((dsetconstrEL = $true) => ((dsetconstrER = $true) => ((exuE1 = $true) => ((prop2setE = $true) => ((emptysetE = $true) => ((emptysetimpfalse = $true) => ((notinemptyset = $true) => ((exuE3e = $true) => ((setext = $true) => ((emptyI = $true) => ((noeltsimpempty = $true) => ((setbeta = $true) => ((nonemptyE1 = $true) => ((nonemptyI = $true) => ((nonemptyI1 = $true) => ((setadjoinIL = $true) => ((emptyinunitempty = $true) => ((setadjoinIR = $true) => ((setadjoinE = $true) => ((setadjoinOr = $true) => ((setoftrueEq = $true) => ((powersetI = $true) => ((emptyinPowerset = $true) => ((emptyInPowerset = $true) => ((powersetE = $true) => ((setunionI = $true) => ((setunionE = $true) => ((subPowSU = $true) => ((exuE2 = $true) => ((nonemptyImpWitness = $true) => ((uniqinunit = $true) => ((notinsingleton = $true) => ((eqinunit = $true) => ((singletonsswitch = $true) => ((upairsetE = $true) => ((upairsetIL = $true) => ((upairsetIR = $true) => ((emptyE1 = $true) => ((vacuousDall = $true) => ((quantDeMorgan1 = $true) => ((quantDeMorgan2 = $true) => ((quantDeMorgan3 = $true) => ((quantDeMorgan4 = $true) => ((prop2setI = $true) => ((prop2set2propI = $true) => ((notdexE = $true) => ((notdallE = $true) => ((exuI1 = $true) => ((exuI3 = $true) => ((exuI2 = $true) => ((inCongP = $true) => ((in__Cong = $true) => ((exuE3u = $true) => ((exu__Cong = $true) => ((emptyset__Cong = $true) => ! [X0 : $i,X1 : $i] : ((X0 = X1) => ! [X2 : $i,X3 : $i] : ((X2 = X3) => ((setadjoin @ X1 @ X3) = (setadjoin @ X0 @ X2))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.11/1.47    inference(fool_elimination,[status(thm)],[f136])).
% 2.11/1.47  thf(f136,plain,(
% 2.11/1.47    ~(setextAx => (emptysetAx => (setadjoinAx => (powersetAx => (setunionAx => (omega0Ax => (omegaSAx => (omegaIndAx => (replAx => (foundationAx => (wellorderingAx => (descrp => (dsetconstrI => (dsetconstrEL => (dsetconstrER => (exuE1 => (prop2setE => (emptysetE => (emptysetimpfalse => (notinemptyset => (exuE3e => (setext => (emptyI => (noeltsimpempty => (setbeta => (nonemptyE1 => (nonemptyI => (nonemptyI1 => (setadjoinIL => (emptyinunitempty => (setadjoinIR => (setadjoinE => (setadjoinOr => (setoftrueEq => (powersetI => (emptyinPowerset => (emptyInPowerset => (powersetE => (setunionI => (setunionE => (subPowSU => (exuE2 => (nonemptyImpWitness => (uniqinunit => (notinsingleton => (eqinunit => (singletonsswitch => (upairsetE => (upairsetIL => (upairsetIR => (emptyE1 => (vacuousDall => (quantDeMorgan1 => (quantDeMorgan2 => (quantDeMorgan3 => (quantDeMorgan4 => (prop2setI => (prop2set2propI => (notdexE => (notdallE => (exuI1 => (exuI3 => (exuI2 => (inCongP => (in__Cong => (exuE3u => (exu__Cong => (emptyset__Cong => ! [X0 : $i,X1 : $i] : ((X0 = X1) => ! [X2 : $i,X3 : $i] : ((X2 = X3) => ((setadjoin @ X1 @ X3) = (setadjoin @ X0 @ X2))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.11/1.47    inference(rectify,[status(thm)],[f72])).
% 2.11/1.47  thf(f72,negated_conjecture,(
% 2.11/1.47    ~(setextAx => (emptysetAx => (setadjoinAx => (powersetAx => (setunionAx => (omega0Ax => (omegaSAx => (omegaIndAx => (replAx => (foundationAx => (wellorderingAx => (descrp => (dsetconstrI => (dsetconstrEL => (dsetconstrER => (exuE1 => (prop2setE => (emptysetE => (emptysetimpfalse => (notinemptyset => (exuE3e => (setext => (emptyI => (noeltsimpempty => (setbeta => (nonemptyE1 => (nonemptyI => (nonemptyI1 => (setadjoinIL => (emptyinunitempty => (setadjoinIR => (setadjoinE => (setadjoinOr => (setoftrueEq => (powersetI => (emptyinPowerset => (emptyInPowerset => (powersetE => (setunionI => (setunionE => (subPowSU => (exuE2 => (nonemptyImpWitness => (uniqinunit => (notinsingleton => (eqinunit => (singletonsswitch => (upairsetE => (upairsetIL => (upairsetIR => (emptyE1 => (vacuousDall => (quantDeMorgan1 => (quantDeMorgan2 => (quantDeMorgan3 => (quantDeMorgan4 => (prop2setI => (prop2set2propI => (notdexE => (notdallE => (exuI1 => (exuI3 => (exuI2 => (inCongP => (in__Cong => (exuE3u => (exu__Cong => (emptyset__Cong => ! [X1 : $i,X2 : $i] : ((X1 = X2) => ! [X8 : $i,X10 : $i] : ((X8 = X10) => ((setadjoin @ X1 @ X8) = (setadjoin @ X2 @ X10))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.11/1.47    inference(negated_conjecture,[status(cth)],[f71])).
% 2.11/1.47  thf(f71,conjecture,(
% 2.11/1.47    setextAx => (emptysetAx => (setadjoinAx => (powersetAx => (setunionAx => (omega0Ax => (omegaSAx => (omegaIndAx => (replAx => (foundationAx => (wellorderingAx => (descrp => (dsetconstrI => (dsetconstrEL => (dsetconstrER => (exuE1 => (prop2setE => (emptysetE => (emptysetimpfalse => (notinemptyset => (exuE3e => (setext => (emptyI => (noeltsimpempty => (setbeta => (nonemptyE1 => (nonemptyI => (nonemptyI1 => (setadjoinIL => (emptyinunitempty => (setadjoinIR => (setadjoinE => (setadjoinOr => (setoftrueEq => (powersetI => (emptyinPowerset => (emptyInPowerset => (powersetE => (setunionI => (setunionE => (subPowSU => (exuE2 => (nonemptyImpWitness => (uniqinunit => (notinsingleton => (eqinunit => (singletonsswitch => (upairsetE => (upairsetIL => (upairsetIR => (emptyE1 => (vacuousDall => (quantDeMorgan1 => (quantDeMorgan2 => (quantDeMorgan3 => (quantDeMorgan4 => (prop2setI => (prop2set2propI => (notdexE => (notdallE => (exuI1 => (exuI3 => (exuI2 => (inCongP => (in__Cong => (exuE3u => (exu__Cong => (emptyset__Cong => ! [X1 : $i,X2 : $i] : ((X1 = X2) => ! [X8 : $i,X10 : $i] : ((X8 = X10) => ((setadjoin @ X1 @ X8) = (setadjoin @ X2 @ X10)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.11/1.47    file('/export/starexec/sandbox2/tmp/tmp.p3DyBkhLYx/DTF2THF_24372.p',setadjoin__Cong)).
% 2.11/1.47  thf(f264,plain,(
% 2.11/1.47    (sK1 = sK0)),
% 2.11/1.47    inference(cnf_transformation,[status(thm)],[f215])).
% 2.11/1.47  thf(f263,plain,(
% 2.11/1.47    ((setadjoin @ sK0 @ sK2) != (setadjoin @ sK1 @ sK3))),
% 2.11/1.47    inference(cnf_transformation,[status(thm)],[f215])).
% 2.11/1.47  % SZS output end Proof for DTF2THF_24372
% 2.11/1.47  % (24522)------------------------------
% 2.11/1.47  % (24522)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.11/1.47  % (24522)Termination reason: Refutation
% 2.11/1.47  
% 2.11/1.47  % (24522)Memory used [KB]: 6012
% 2.11/1.47  % (24522)Time elapsed: 0.017 s
% 2.11/1.47  % (24522)Instructions burned: 39 (million)
% 2.11/1.47  % (24522)------------------------------
% 2.11/1.47  % (24522)------------------------------
% 2.11/1.47  % (24521)Success in time 0.021 s
%------------------------------------------------------------------------------