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DT2H2X---1.9.5.THM-Ref.s

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%------------------------------------------------------------------------------
% File     : DT2H2X---1.9.5
% Problem  : SEU545^1 : TPTP v9.2.1. Released v3.7.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300

% Computer : n026.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 09:35:11 AM UTC 2026

% Result   : Theorem 2.13s 1.49s
% Output   : Refutation 2.13s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   20
%            Number of leaves      :    4
% Syntax   : Number of formulae    :   35 (  13 unt;   0 typ;   0 def)
%            Number of atoms       : 1136 ( 332 equ;   0 cnn)
%            Maximal formula atoms :   66 (  32 avg)
%            Number of connectives :  661 (  30   ~;  26   |; 201   &; 120   @)
%                                         (   0 <=>; 273  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   71 (  16 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   12 (  12   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :  120 ( 115 usr;  66 con; 0-3 aty)
%                                         (   7  !!;   4  ??;   0 @@+;   0 @@-)
%            Number of variables   :   81 (  29   ^;  38   !;  14   ?;  81   :)

% 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_90,type,
    sK0: $i > $o ).

thf(func_def_93,type,
    sK3: ( $i > $o ) > $i ).

thf(func_def_94,type,
    sK4: ( $i > $o ) > $i > $i ).

thf(func_def_95,type,
    sK5: ( $i > $o ) > $i > $i ).

thf(func_def_96,type,
    sK6: $i > $i > $i ).

thf(func_def_97,type,
    sK7: $i > ( $i > $o ) > $i ).

thf(func_def_98,type,
    sK8: $i > ( $i > $o ) > $i ).

thf(func_def_99,type,
    sK9: $i > $i > $i ).

thf(func_def_100,type,
    sK10: $i > $i ).

thf(func_def_101,type,
    sK11: ( $i > $o ) > $i > $i ).

thf(func_def_102,type,
    sK12: $i > $i ).

thf(func_def_104,type,
    sK13: ( $i > $i > $o ) > $i > $i ).

thf(func_def_105,type,
    sK14: ( $i > $i > $o ) > $i > $i ).

thf(func_def_106,type,
    sK15: $i > ( $i > $i > $o ) > $i > $i ).

thf(func_def_107,type,
    sK16: $i > ( $i > $i > $o ) > $i > $i ).

thf(func_def_108,type,
    sK17: $i > ( $i > $i > $o ) > $i > $i ).

thf(func_def_109,type,
    sK18: $i > ( $i > $i > $o ) > $i > $i ).

thf(func_def_110,type,
    sK19: $i > $i ).

thf(func_def_111,type,
    sK20: $i > ( $i > $o ) > $i ).

thf(func_def_112,type,
    sK21: $i > $i ).

thf(func_def_113,type,
    sK22: ( $i > $o ) > $i > $i ).

thf(func_def_114,type,
    sK23: $i > $i > $i ).

thf(func_def_115,type,
    sK24: $i > $i > $i ).

thf(func_def_116,type,
    sK25: $i > $i > $i ).

thf(func_def_117,type,
    sK26: $i > ( $i > $o ) > $i ).

thf(func_def_118,type,
    sK27: ( $i > $o ) > $i ).

thf(func_def_119,type,
    sK28: ( $i > $o ) > $i > $i ).

thf(func_def_120,type,
    sK29: $i > $i ).

thf(func_def_121,type,
    sK30: $i > $i ).

thf(func_def_122,type,
    sK31: $o > $i > $i > $i ).

thf(func_def_123,type,
    sK32: ( $i > $o ) > $i ).

thf(func_def_124,type,
    sK33: ( $i > $o ) > $i > $i ).

thf(func_def_125,type,
    sK34: ( $i > $o ) > $i > $i ).

thf(func_def_126,type,
    sK35: $i > $i ).

thf(func_def_127,type,
    sK36: $i > $i > $i ).

thf(func_def_128,type,
    sK37: ( $i > $o ) > $i ).

thf(func_def_129,type,
    sK38: ( $i > $o ) > $i > $i ).

thf(func_def_130,type,
    sK39: ( $i > $o ) > $i > $i ).

thf(func_def_131,type,
    sK40: $i > $i ).

thf(func_def_132,type,
    sK41: $i > $i > $i ).

thf(func_def_133,type,
    sK42: $i > $i > $i ).

thf(func_def_134,type,
    sK43: $i > $i > $i ).

thf(func_def_135,type,
    sK44: $i > $i > $i > $i ).

thf(f1208,plain,
    $false,
    inference(subsumption_resolution,[status(thm)],[f1206,f1145]) ).

thf(f1145,plain,
    ( sK1
   != ( sK21 @ sK1 ) ),
    inference(trivial_inequality_removal,[status(thm)],[f1140]) ).

thf(f1140,plain,
    ( ( sK1
     != ( sK21 @ sK1 ) )
    | ( $false = $true ) ),
    inference(superposition,[status(thm)],[f663,f260]) ).

thf(f260,plain,
    ( ( sK0 @ sK1 )
    = $true ),
    inference(cnf_transformation,[status(thm)],[f195]) ).

thf(f195,plain,
    ( ( setunionI = $true )
    & ( omegaIndAx = $true )
    & ( quantDeMorgan4 = $true )
    & ( setadjoinE = $true )
    & ( notinsingleton = $true )
    & ( nonemptyI1 = $true )
    & ( setunionE = $true )
    & ( vacuousDall = $true )
    & ( emptysetE = $true )
    & ( prop2setE = $true )
    & ( upairsetIL = $true )
    & ( emptyInPowerset = $true )
    & ( setadjoinIL = $true )
    & ( eqinunit = $true )
    & ( notinemptyset = $true )
    & ( wellorderingAx = $true )
    & ( powersetI = $true )
    & ( noeltsimpempty = $true )
    & ( emptyE1 = $true )
    & ( omega0Ax = $true )
    & ( setadjoinAx = $true )
    & ( emptysetimpfalse = $true )
    & ( setadjoinOr = $true )
    & ( ( exu
        @ ^ [Y0: $i] : ( sK0 @ Y0 ) )
     != $true )
    & ( ( sK0 @ sK1 )
      = $true )
    & ! [X2: $i,X3: $i] :
        ( ( $true
         != ( sK0 @ X3 ) )
        | ( ( sK0 @ X2 )
         != $true )
        | ( X2 = X3 ) )
    & ( nonemptyImpWitness = $true )
    & ( dsetconstrI = $true )
    & ( prop2set2propI = $true )
    & ( setadjoinIR = $true )
    & ( dsetconstrEL = $true )
    & ( prop2setI = $true )
    & ( quantDeMorgan2 = $true )
    & ( emptyinunitempty = $true )
    & ( foundationAx = $true )
    & ( setoftrueEq = $true )
    & ( powersetAx = $true )
    & ( setext = $true )
    & ( nonemptyI = $true )
    & ( exuE1 = $true )
    & ( upairsetE = $true )
    & ( emptyI = $true )
    & ( exuE2 = $true )
    & ( singletonsswitch = $true )
    & ( setunionAx = $true )
    & ( upairsetIR = $true )
    & ( setextAx = $true )
    & ( emptysetAx = $true )
    & ( exuI1 = $true )
    & ( subPowSU = $true )
    & ( quantDeMorgan3 = $true )
    & ( quantDeMorgan1 = $true )
    & ( powersetE = $true )
    & ( notdexE = $true )
    & ( descrp = $true )
    & ( emptyinPowerset = $true )
    & ( replAx = $true )
    & ( dsetconstrER = $true )
    & ( omegaSAx = $true )
    & ( uniqinunit = $true )
    & ( nonemptyE1 = $true )
    & ( setbeta = $true )
    & ( notdallE = $true )
    & ( exuE3e = $true ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f192,f194,f193]) ).

thf(f193,plain,
    ( ? [X0: $i > $o] :
        ( ( $true
         != ( exu
            @ ^ [Y0: $i] : ( X0 @ Y0 ) ) )
        & ? [X1: $i] :
            ( ( X0 @ X1 )
            = $true )
        & ! [X2: $i,X3: $i] :
            ( ( ( X0 @ X3 )
             != $true )
            | ( ( X0 @ X2 )
             != $true )
            | ( X2 = X3 ) ) )
   => ( ( ( exu
          @ ^ [Y0: $i] : ( sK0 @ Y0 ) )
       != $true )
      & ? [X1: $i] :
          ( ( sK0 @ X1 )
          = $true )
      & ! [X3: $i,X2: $i] :
          ( ( $true
           != ( sK0 @ X3 ) )
          | ( ( sK0 @ X2 )
           != $true )
          | ( X2 = X3 ) ) ) ),
    introduced(definition,[],[choice_axiom]) ).

thf(f194,plain,
    ( ? [X1: $i] :
        ( ( sK0 @ X1 )
        = $true )
   => ( ( sK0 @ sK1 )
      = $true ) ),
    introduced(definition,[],[choice_axiom]) ).

thf(f192,plain,
    ( ( setunionI = $true )
    & ( omegaIndAx = $true )
    & ( quantDeMorgan4 = $true )
    & ( setadjoinE = $true )
    & ( notinsingleton = $true )
    & ( nonemptyI1 = $true )
    & ( setunionE = $true )
    & ( vacuousDall = $true )
    & ( emptysetE = $true )
    & ( prop2setE = $true )
    & ( upairsetIL = $true )
    & ( emptyInPowerset = $true )
    & ( setadjoinIL = $true )
    & ( eqinunit = $true )
    & ( notinemptyset = $true )
    & ( wellorderingAx = $true )
    & ( powersetI = $true )
    & ( noeltsimpempty = $true )
    & ( emptyE1 = $true )
    & ( omega0Ax = $true )
    & ( setadjoinAx = $true )
    & ( emptysetimpfalse = $true )
    & ( setadjoinOr = $true )
    & ? [X0: $i > $o] :
        ( ( $true
         != ( exu
            @ ^ [Y0: $i] : ( X0 @ Y0 ) ) )
        & ? [X1: $i] :
            ( ( X0 @ X1 )
            = $true )
        & ! [X2: $i,X3: $i] :
            ( ( ( X0 @ X3 )
             != $true )
            | ( ( X0 @ X2 )
             != $true )
            | ( X2 = X3 ) ) )
    & ( nonemptyImpWitness = $true )
    & ( dsetconstrI = $true )
    & ( prop2set2propI = $true )
    & ( setadjoinIR = $true )
    & ( dsetconstrEL = $true )
    & ( prop2setI = $true )
    & ( quantDeMorgan2 = $true )
    & ( emptyinunitempty = $true )
    & ( foundationAx = $true )
    & ( setoftrueEq = $true )
    & ( powersetAx = $true )
    & ( setext = $true )
    & ( nonemptyI = $true )
    & ( exuE1 = $true )
    & ( upairsetE = $true )
    & ( emptyI = $true )
    & ( exuE2 = $true )
    & ( singletonsswitch = $true )
    & ( setunionAx = $true )
    & ( upairsetIR = $true )
    & ( setextAx = $true )
    & ( emptysetAx = $true )
    & ( exuI1 = $true )
    & ( subPowSU = $true )
    & ( quantDeMorgan3 = $true )
    & ( quantDeMorgan1 = $true )
    & ( powersetE = $true )
    & ( notdexE = $true )
    & ( descrp = $true )
    & ( emptyinPowerset = $true )
    & ( replAx = $true )
    & ( dsetconstrER = $true )
    & ( omegaSAx = $true )
    & ( uniqinunit = $true )
    & ( nonemptyE1 = $true )
    & ( setbeta = $true )
    & ( notdallE = $true )
    & ( exuE3e = $true ) ),
    inference(flattening,[status(thm)],[f191]) ).

thf(f191,plain,
    ( ? [X0: $i > $o] :
        ( ( $true
         != ( exu
            @ ^ [Y0: $i] : ( X0 @ Y0 ) ) )
        & ! [X2: $i,X3: $i] :
            ( ( X2 = X3 )
            | ( ( X0 @ X3 )
             != $true )
            | ( ( X0 @ X2 )
             != $true ) )
        & ? [X1: $i] :
            ( ( X0 @ X1 )
            = $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)],[f86]) ).

thf(f86,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 )
                                                                                                                             => ! [X0: $i > $o] :
                                                                                                                                  ( ? [X1: $i] :
                                                                                                                                      ( ( X0 @ X1 )
                                                                                                                                      = $true )
                                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( ( X0 @ X2 )
                                                                                                                                          = $true )
                                                                                                                                       => ( ( ( X0 @ X3 )
                                                                                                                                            = $true )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                                   => ( $true
                                                                                                                                      = ( exu
                                                                                                                                        @ ^ [Y0: $i] : ( X0 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f85]) ).

thf(f85,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
                                                                                                                             => ! [X0: $i > $o] :
                                                                                                                                  ( ? [X1: $i] : ( X0 @ X1 )
                                                                                                                                 => ( ! [X2: $i,X3: $i] :
                                                                                                                                        ( ( X0 @ X2 )
                                                                                                                                       => ( ( X0 @ X3 )
                                                                                                                                         => ( X2 = X3 ) ) )
                                                                                                                                   => ( exu
                                                                                                                                      @ ^ [X4: $i] : ( X0 @ X4 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(rectify,[status(thm)],[f65]) ).

thf(f65,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
                                                                                                                             => ! [X0: $i > $o] :
                                                                                                                                  ( ? [X1: $i] : ( X0 @ X1 )
                                                                                                                                 => ( ! [X1: $i,X2: $i] :
                                                                                                                                        ( ( X0 @ X1 )
                                                                                                                                       => ( ( X0 @ X2 )
                                                                                                                                         => ( X1 = X2 ) ) )
                                                                                                                                   => ( exu
                                                                                                                                      @ ^ [X1: $i] : ( X0 @ X1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(negated_conjecture,[status(cth)],[f64]) ).

thf(f64,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
                                                                                                                           => ! [X0: $i > $o] :
                                                                                                                                ( ? [X1: $i] : ( X0 @ X1 )
                                                                                                                               => ( ! [X1: $i,X2: $i] :
                                                                                                                                      ( ( X0 @ X1 )
                                                                                                                                     => ( ( X0 @ X2 )
                                                                                                                                       => ( X1 = X2 ) ) )
                                                                                                                                 => ( exu
                                                                                                                                    @ ^ [X1: $i] : ( X0 @ X1 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    file('/export/starexec/sandbox/tmp/tmp.V2DC10xSo5/DTF2THF_32358.p',exuI3) ).

thf(f663,plain,
    ! [X1: $i] :
      ( ( $false
        = ( sK0 @ X1 ) )
      | ( ( sK21 @ X1 )
       != X1 ) ),
    inference(equality_proxy_clausification,[status(thm)],[f661]) ).

thf(f661,plain,
    ! [X1: $i] :
      ( ( ( X1
          = ( sK21 @ X1 ) )
        = $false )
      | ( $false
        = ( sK0 @ X1 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f660]) ).

thf(f660,plain,
    ! [X1: $i] :
      ( ( $false
        = ( ( sK0 @ ( sK21 @ X1 ) )
         => ( X1
            = ( sK21 @ X1 ) ) ) )
      | ( $false
        = ( sK0 @ X1 ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f659]) ).

thf(f659,plain,
    ! [X1: $i] :
      ( ( ( ^ [Y0: $i] :
              ( ( sK0 @ Y0 )
             => ( X1 = Y0 ) )
          @ ( sK21 @ X1 ) )
        = $false )
      | ( $false
        = ( sK0 @ X1 ) ) ),
    inference(sigma_clausification,[status(thm)],[f658]) ).

thf(f658,plain,
    ! [X1: $i] :
      ( ( $false
        = ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( sK0 @ Y0 )
             => ( X1 = Y0 ) ) ) )
      | ( $false
        = ( sK0 @ X1 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f657]) ).

thf(f657,plain,
    ! [X1: $i] :
      ( ( ( sK0 @ X1 )
        & ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( sK0 @ Y0 )
             => ( X1 = Y0 ) ) ) )
      = $false ),
    inference(beta_eta_normalization,[status(thm)],[f656]) ).

thf(f656,plain,
    ! [X1: $i] :
      ( $false
      = ( ^ [Y0: $i] :
            ( ( sK0 @ Y0 )
            & ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( sK0 @ Y1 )
                 => ( Y0 = Y1 ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f655]) ).

thf(f655,plain,
    ( $true
   != ( ?? @ $i
      @ ^ [Y0: $i] :
          ( ( sK0 @ Y0 )
          & ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( sK0 @ Y1 )
               => ( Y0 = Y1 ) ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f336]) ).

thf(f336,plain,
    ( ( ^ [Y0: $i > $o] :
          ( ?? @ $i
          @ ^ [Y1: $i] :
              ( ( Y0 @ Y1 )
              & ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( Y0 @ Y2 )
                   => ( Y1 = Y2 ) ) ) ) )
      @ ^ [Y0: $i] : ( sK0 @ Y0 ) )
   != $true ),
    inference(definition_unfolding,[status(thm)],[f261,f312]) ).

thf(f312,plain,
    ( exu
    = ( ^ [Y0: $i > $o] :
          ( ?? @ $i
          @ ^ [Y1: $i] :
              ( ( Y0 @ Y1 )
              & ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( Y0 @ Y2 )
                   => ( Y1 = Y2 ) ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f124]) ).

thf(f124,plain,
    ( exu
    = ( ^ [Y0: $i > $o] :
          ( ?? @ $i
          @ ^ [Y1: $i] :
              ( ( Y0 @ Y1 )
              & ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( Y0 @ Y2 )
                   => ( Y1 = Y2 ) ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f123]) ).

thf(f123,plain,
    ( exu
    = ( ^ [X0: $i > $o] :
        ? [X1: $i] :
          ( ! [X2: $i] :
              ( ( X0 @ X2 )
             => ( X1 = X2 ) )
          & ( X0 @ X1 ) ) ) ),
    inference(rectify,[status(thm)],[f1]) ).

thf(f1,axiom,
    ( exu
    = ( ^ [X0: $i > $o] :
        ? [X1: $i] :
          ( ! [X2: $i] :
              ( ( X0 @ X2 )
             => ( X1 = X2 ) )
          & ( X0 @ X1 ) ) ) ),
    file('/export/starexec/sandbox/tmp/tmp.V2DC10xSo5/DTF2THF_32358.p',exu) ).

thf(f261,plain,
    ( ( exu
      @ ^ [Y0: $i] : ( sK0 @ Y0 ) )
   != $true ),
    inference(cnf_transformation,[status(thm)],[f195]) ).

thf(f1206,plain,
    ( sK1
    = ( sK21 @ sK1 ) ),
    inference(trivial_inequality_removal,[status(thm)],[f1196]) ).

thf(f1196,plain,
    ( ( sK1
      = ( sK21 @ sK1 ) )
    | ( $false = $true ) ),
    inference(superposition,[status(thm)],[f1194,f260]) ).

thf(f1194,plain,
    ! [X0: $i] :
      ( ( $false
        = ( sK0 @ X0 ) )
      | ( ( sK21 @ X0 )
        = sK1 ) ),
    inference(trivial_inequality_removal,[status(thm)],[f1185]) ).

thf(f1185,plain,
    ! [X0: $i] :
      ( ( $false
        = ( sK0 @ X0 ) )
      | ( ( sK21 @ X0 )
        = sK1 )
      | ( $true != $true ) ),
    inference(superposition,[status(thm)],[f1155,f662]) ).

thf(f662,plain,
    ! [X1: $i] :
      ( ( ( sK0 @ ( sK21 @ X1 ) )
        = $true )
      | ( $false
        = ( sK0 @ X1 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f660]) ).

thf(f1155,plain,
    ! [X0: $i] :
      ( ( ( sK0 @ X0 )
       != $true )
      | ( sK1 = X0 ) ),
    inference(trivial_inequality_removal,[status(thm)],[f1152]) ).

thf(f1152,plain,
    ! [X0: $i] :
      ( ( ( sK0 @ X0 )
       != $true )
      | ( $true != $true )
      | ( sK1 = X0 ) ),
    inference(superposition,[status(thm)],[f259,f260]) ).

thf(f259,plain,
    ! [X2: $i,X3: $i] :
      ( ( $true
       != ( sK0 @ X3 ) )
      | ( ( sK0 @ X2 )
       != $true )
      | ( X2 = X3 ) ),
    inference(cnf_transformation,[status(thm)],[f195]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : SEU545^1 : TPTP v9.2.1. Released v3.7.0.
% 0.12/0.13  % Command  : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.17/0.34  % Computer : n026.cluster.edu
% 0.17/0.34  % Model    : x86_64 x86_64
% 0.17/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.34  % Memory   : 8042.1875MB
% 0.17/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.17/0.34  % CPULimit : 300
% 0.17/0.34  % WCLimit  : 300
% 0.17/0.34  % DateTime : Tue Feb 24 12:26:55 EST 2026
% 0.17/0.34  % CPUTime  : 
% 0.17/0.34  Running /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.20/0.46  ---- Original DTF file ---
% 0.20/0.46  thf(spec,logic,$$dhol).
% 0.20/0.46  %------------------------------------------------------------------------------
% 0.20/0.46  % File     : SEU545^1 : TPTP v9.2.1. Released v3.7.0.
% 0.20/0.46  % Domain   : Set Theory
% 0.20/0.46  % Problem  : Preliminary Notions - Equivalence Laws
% 0.20/0.46  % Version  : Especial.
% 0.20/0.46  % English  : (! phi:i>o.(? x:i.phi x) -> (! x:i.! y:i.phi x -> phi y -> x = y)
% 0.20/0.46  %             -> exu (^ x:i.phi x))
% 0.20/0.46  
% 0.20/0.46  % Refs     : [Bro08] Brown (2008), Email to G. Sutcliffe
% 0.20/0.46  % Source   : [Bro08]
% 0.20/0.46  % Names    : ZFC047g [Bro08]
% 0.20/0.46  
% 0.20/0.46  % Status   : Theorem
% 0.20/0.46  % Rating   : 0.11 v9.1.0, 0.12 v9.0.0, 0.30 v8.2.0, 0.31 v8.1.0, 0.09 v7.5.0, 0.00 v7.4.0, 0.22 v7.2.0, 0.12 v7.1.0, 0.25 v7.0.0, 0.14 v6.4.0, 0.17 v6.3.0, 0.20 v6.2.0, 0.14 v6.1.0, 0.29 v5.5.0, 0.33 v5.4.0, 0.40 v5.1.0, 0.60 v5.0.0, 0.40 v4.1.0, 0.67 v3.7.0
% 0.20/0.46  % Syntax   : Number of formulae    :  137 (  63 unt;  73 typ;  63 def)
% 0.20/0.46  %            Number of atoms       :  344 (  84 equ;   0 cnn)
% 0.20/0.46  %            Maximal formula atoms :   63 (   5 avg)
% 0.20/0.46  %            Number of connectives :  579 (  21   ~;   5   |;  27   &; 365   @)
% 0.20/0.46  %                                         (   8 <=>; 153  =>;   0  <=;   0 <~>)
% 0.20/0.46  %            Maximal formula depth :   70 (   2 avg)
% 0.20/0.46  %            Number of types       :    2 (   0 usr)
% 0.20/0.46  %            Number of type conns  :   38 (  38   >;   0   *;   0   +;   0  <<)
% 0.20/0.46  %            Number of symbols     :   76 (  73 usr;  65 con; 0-2 aty)
% 0.20/0.46  %            Number of variables   :  192 (  17   ^; 148   !;  27   ?; 192   :)
% 0.20/0.46  % SPC      : TH0_THM_EQU_NAR
% 0.20/0.46  
% 0.20/0.46  % Comments : http://mathgate.info/detsetitem.php?id=410
% 0.20/0.46  %------------------------------------------------------------------------------
% 0.20/0.46  thf(in_type,type,
% 0.20/0.46      in: $i > $i > $o ).
% 0.20/0.46  
% 0.20/0.46  thf(exu_type,type,
% 0.20/0.46      exu: ( $i > $o ) > $o ).
% 0.20/0.46  
% 0.20/0.46  thf(exu,definition,
% 0.20/0.46      ( exu
% 0.20/0.46      = ( ^ [Xphi: $i > $o] :
% 0.20/0.46          ? [Xx: $i] :
% 0.20/0.46            ( ( Xphi @ Xx )
% 0.20/0.46            & ! [Xy: $i] :
% 0.20/0.46                ( ( Xphi @ Xy )
% 0.20/0.46               => ( Xx = Xy ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setextAx_type,type,
% 0.20/0.46      setextAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setextAx,definition,
% 0.20/0.46      ( setextAx
% 0.20/0.46      = ( ! [A: $i,B: $i] :
% 0.20/0.46            ( ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ A )
% 0.20/0.46              <=> ( in @ Xx @ B ) )
% 0.20/0.46           => ( A = B ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(emptyset_type,type,
% 0.20/0.46      emptyset: $i ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetAx_type,type,
% 0.20/0.46      emptysetAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetAx,definition,
% 0.20/0.46      ( emptysetAx
% 0.20/0.46      = ( ! [Xx: $i] :
% 0.20/0.46            ~ ( in @ Xx @ emptyset ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoin_type,type,
% 0.20/0.46      setadjoin: $i > $i > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoinAx_type,type,
% 0.20/0.46      setadjoinAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoinAx,definition,
% 0.20/0.46      ( setadjoinAx
% 0.20/0.46      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.20/0.46            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.20/0.46          <=> ( ( Xy = Xx )
% 0.20/0.46              | ( in @ Xy @ A ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(powerset_type,type,
% 0.20/0.46      powerset: $i > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(powersetAx_type,type,
% 0.20/0.46      powersetAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(powersetAx,definition,
% 0.20/0.46      ( powersetAx
% 0.20/0.46      = ( ! [A: $i,B: $i] :
% 0.20/0.46            ( ( in @ B @ ( powerset @ A ) )
% 0.20/0.46          <=> ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ B )
% 0.20/0.46               => ( in @ Xx @ A ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setunion_type,type,
% 0.20/0.46      setunion: $i > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(setunionAx_type,type,
% 0.20/0.46      setunionAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setunionAx,definition,
% 0.20/0.46      ( setunionAx
% 0.20/0.46      = ( ! [A: $i,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ ( setunion @ A ) )
% 0.20/0.46          <=> ? [B: $i] :
% 0.20/0.46                ( ( in @ Xx @ B )
% 0.20/0.46                & ( in @ B @ A ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(omega_type,type,
% 0.20/0.46      omega: $i ).
% 0.20/0.46  
% 0.20/0.46  thf(omega0Ax_type,type,
% 0.20/0.46      omega0Ax: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(omega0Ax,definition,
% 0.20/0.46      ( omega0Ax
% 0.20/0.46      = ( in @ emptyset @ omega ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(omegaSAx_type,type,
% 0.20/0.46      omegaSAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(omegaSAx,definition,
% 0.20/0.46      ( omegaSAx
% 0.20/0.46      = ( ! [Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ omega )
% 0.20/0.46           => ( in @ ( setadjoin @ Xx @ Xx ) @ omega ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(omegaIndAx_type,type,
% 0.20/0.46      omegaIndAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(omegaIndAx,definition,
% 0.20/0.46      ( omegaIndAx
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ( ( in @ emptyset @ A )
% 0.20/0.46              & ! [Xx: $i] :
% 0.20/0.46                  ( ( ( in @ Xx @ omega )
% 0.20/0.46                    & ( in @ Xx @ A ) )
% 0.20/0.46                 => ( in @ ( setadjoin @ Xx @ Xx ) @ A ) ) )
% 0.20/0.46           => ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ omega )
% 0.20/0.46               => ( in @ Xx @ A ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(replAx_type,type,
% 0.20/0.46      replAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(replAx,definition,
% 0.20/0.46      ( replAx
% 0.20/0.46      = ( ! [Xphi: $i > $i > $o,A: $i] :
% 0.20/0.46            ( ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ A )
% 0.20/0.46               => ( exu
% 0.20/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xx @ Xy ) ) )
% 0.20/0.46           => ? [B: $i] :
% 0.20/0.46              ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ B )
% 0.20/0.46              <=> ? [Xy: $i] :
% 0.20/0.46                    ( ( in @ Xy @ A )
% 0.20/0.46                    & ( Xphi @ Xy @ Xx ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(foundationAx_type,type,
% 0.20/0.46      foundationAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(foundationAx,definition,
% 0.20/0.46      ( foundationAx
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ? [Xx: $i] : ( in @ Xx @ A )
% 0.20/0.46           => ? [B: $i] :
% 0.20/0.46                ( ( in @ B @ A )
% 0.20/0.46                & ~ ? [Xx: $i] :
% 0.20/0.46                      ( ( in @ Xx @ B )
% 0.20/0.46                      & ( in @ Xx @ A ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(wellorderingAx_type,type,
% 0.20/0.46      wellorderingAx: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(wellorderingAx,definition,
% 0.20/0.46      ( wellorderingAx
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46          ? [B: $i] :
% 0.20/0.46            ( ! [C: $i] :
% 0.20/0.46                ( ( in @ C @ B )
% 0.20/0.46               => ! [Xx: $i] :
% 0.20/0.46                    ( ( in @ Xx @ C )
% 0.20/0.46                   => ( in @ Xx @ A ) ) )
% 0.20/0.46            & ! [Xx: $i,Xy: $i] :
% 0.20/0.46                ( ( ( in @ Xx @ A )
% 0.20/0.46                  & ( in @ Xy @ A ) )
% 0.20/0.46               => ( ! [C: $i] :
% 0.20/0.46                      ( ( in @ C @ B )
% 0.20/0.46                     => ( ( in @ Xx @ C )
% 0.20/0.46                      <=> ( in @ Xy @ C ) ) )
% 0.20/0.46                 => ( Xx = Xy ) ) )
% 0.20/0.46            & ! [C: $i,D: $i] :
% 0.20/0.46                ( ( ( in @ C @ B )
% 0.20/0.46                  & ( in @ D @ B ) )
% 0.20/0.46               => ( ! [Xx: $i] :
% 0.20/0.46                      ( ( in @ Xx @ C )
% 0.20/0.46                     => ( in @ Xx @ D ) )
% 0.20/0.46                  | ! [Xx: $i] :
% 0.20/0.46                      ( ( in @ Xx @ D )
% 0.20/0.46                     => ( in @ Xx @ C ) ) ) )
% 0.20/0.46            & ! [C: $i] :
% 0.20/0.46                ( ( ! [Xx: $i] :
% 0.20/0.46                      ( ( in @ Xx @ C )
% 0.20/0.46                     => ( in @ Xx @ A ) )
% 0.20/0.46                  & ? [Xx: $i] : ( in @ Xx @ C ) )
% 0.20/0.46               => ? [D: $i,Xx: $i] :
% 0.20/0.46                    ( ( in @ D @ B )
% 0.20/0.46                    & ( in @ Xx @ C )
% 0.20/0.46                    & ~ ? [Xy: $i] :
% 0.20/0.46                          ( ( in @ Xy @ D )
% 0.20/0.46                          & ( in @ Xy @ C ) )
% 0.20/0.46                    & ! [E: $i] :
% 0.20/0.46                        ( ( in @ E @ B )
% 0.20/0.46                       => ( ! [Xy: $i] :
% 0.20/0.46                              ( ( in @ Xy @ E )
% 0.20/0.46                             => ( in @ Xy @ D ) )
% 0.20/0.46                          | ( in @ Xx @ E ) ) ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(descr_type,type,
% 0.20/0.46      descr: ( $i > $o ) > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(descrp_type,type,
% 0.20/0.46      descrp: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(descrp,definition,
% 0.20/0.46      ( descrp
% 0.20/0.46      = ( ! [Xphi: $i > $o] :
% 0.20/0.46            ( ( exu
% 0.20/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.20/0.46           => ( Xphi
% 0.20/0.46              @ ( descr
% 0.20/0.46                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstr_type,type,
% 0.20/0.46      dsetconstr: $i > ( $i > $o ) > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrI_type,type,
% 0.20/0.46      dsetconstrI: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrI,definition,
% 0.20/0.46      ( dsetconstrI
% 0.20/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ A )
% 0.20/0.46           => ( ( Xphi @ Xx )
% 0.20/0.46             => ( in @ Xx
% 0.20/0.46                @ ( dsetconstr @ A
% 0.20/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrEL_type,type,
% 0.20/0.46      dsetconstrEL: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrEL,definition,
% 0.20/0.46      ( dsetconstrEL
% 0.20/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx
% 0.20/0.46              @ ( dsetconstr @ A
% 0.20/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.20/0.46           => ( in @ Xx @ A ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrER_type,type,
% 0.20/0.46      dsetconstrER: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(dsetconstrER,definition,
% 0.20/0.46      ( dsetconstrER
% 0.20/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx
% 0.20/0.46              @ ( dsetconstr @ A
% 0.20/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.20/0.46           => ( Xphi @ Xx ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(exuE1_type,type,
% 0.20/0.46      exuE1: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(exuE1,definition,
% 0.20/0.46      ( exuE1
% 0.20/0.46      = ( ! [Xphi: $i > $o] :
% 0.20/0.46            ( ( exu
% 0.20/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.20/0.46           => ? [Xx: $i] :
% 0.20/0.46                ( ( Xphi @ Xx )
% 0.20/0.46                & ! [Xy: $i] :
% 0.20/0.46                    ( ( Xphi @ Xy )
% 0.20/0.46                   => ( Xx = Xy ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(prop2set_type,type,
% 0.20/0.46      prop2set: $o > $i ).
% 0.20/0.46  
% 0.20/0.46  thf(prop2setE_type,type,
% 0.20/0.46      prop2setE: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(prop2setE,definition,
% 0.20/0.46      ( prop2setE
% 0.20/0.46      = ( ! [Xphi: $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ ( prop2set @ Xphi ) )
% 0.20/0.46           => Xphi ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetE_type,type,
% 0.20/0.46      emptysetE: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetE,definition,
% 0.20/0.46      ( emptysetE
% 0.20/0.46      = ( ! [Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ emptyset )
% 0.20/0.46           => ! [Xphi: $o] : Xphi ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetimpfalse_type,type,
% 0.20/0.46      emptysetimpfalse: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(emptysetimpfalse,definition,
% 0.20/0.46      ( emptysetimpfalse
% 0.20/0.46      = ( ! [Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ emptyset )
% 0.20/0.46           => $false ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(notinemptyset_type,type,
% 0.20/0.46      notinemptyset: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(notinemptyset,definition,
% 0.20/0.46      ( notinemptyset
% 0.20/0.46      = ( ! [Xx: $i] :
% 0.20/0.46            ~ ( in @ Xx @ emptyset ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(exuE3e_type,type,
% 0.20/0.46      exuE3e: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(exuE3e,definition,
% 0.20/0.46      ( exuE3e
% 0.20/0.46      = ( ! [Xphi: $i > $o] :
% 0.20/0.46            ( ( exu
% 0.20/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.20/0.46           => ? [Xx: $i] : ( Xphi @ Xx ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setext_type,type,
% 0.20/0.46      setext: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setext,definition,
% 0.20/0.46      ( setext
% 0.20/0.46      = ( ! [A: $i,B: $i] :
% 0.20/0.46            ( ! [Xx: $i] :
% 0.20/0.46                ( ( in @ Xx @ A )
% 0.20/0.46               => ( in @ Xx @ B ) )
% 0.20/0.46           => ( ! [Xx: $i] :
% 0.20/0.46                  ( ( in @ Xx @ B )
% 0.20/0.46                 => ( in @ Xx @ A ) )
% 0.20/0.46             => ( A = B ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(emptyI_type,type,
% 0.20/0.46      emptyI: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(emptyI,definition,
% 0.20/0.46      ( emptyI
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ! [Xx: $i] :
% 0.20/0.46                ~ ( in @ Xx @ A )
% 0.20/0.46           => ( A = emptyset ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(noeltsimpempty_type,type,
% 0.20/0.46      noeltsimpempty: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(noeltsimpempty,definition,
% 0.20/0.46      ( noeltsimpempty
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ! [Xx: $i] :
% 0.20/0.46                ~ ( in @ Xx @ A )
% 0.20/0.46           => ( A = emptyset ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setbeta_type,type,
% 0.20/0.46      setbeta: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setbeta,definition,
% 0.20/0.46      ( setbeta
% 0.20/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ A )
% 0.20/0.46           => ( ( in @ Xx
% 0.20/0.46                @ ( dsetconstr @ A
% 0.20/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.20/0.46            <=> ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(nonempty_type,type,
% 0.20/0.46      nonempty: $i > $o ).
% 0.20/0.46  
% 0.20/0.46  thf(nonempty,definition,
% 0.20/0.46      ( nonempty
% 0.20/0.46      = ( ^ [Xx: $i] : ( Xx != emptyset ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyE1_type,type,
% 0.20/0.46      nonemptyE1: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyE1,definition,
% 0.20/0.46      ( nonemptyE1
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ( nonempty @ A )
% 0.20/0.46           => ? [Xx: $i] : ( in @ Xx @ A ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyI_type,type,
% 0.20/0.46      nonemptyI: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyI,definition,
% 0.20/0.46      ( nonemptyI
% 0.20/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.20/0.46            ( ( in @ Xx @ A )
% 0.20/0.46           => ( ( Xphi @ Xx )
% 0.20/0.46             => ( nonempty
% 0.20/0.46                @ ( dsetconstr @ A
% 0.20/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyI1_type,type,
% 0.20/0.46      nonemptyI1: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(nonemptyI1,definition,
% 0.20/0.46      ( nonemptyI1
% 0.20/0.46      = ( ! [A: $i] :
% 0.20/0.46            ( ? [Xx: $i] : ( in @ Xx @ A )
% 0.20/0.46           => ( nonempty @ A ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoinIL_type,type,
% 0.20/0.46      setadjoinIL: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoinIL,definition,
% 0.20/0.46      ( setadjoinIL
% 0.20/0.46      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ Xy ) ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(emptyinunitempty_type,type,
% 0.20/0.46      emptyinunitempty: $o ).
% 0.20/0.46  
% 0.20/0.46  thf(emptyinunitempty,definition,
% 0.20/0.46      ( emptyinunitempty
% 0.20/0.46      = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).
% 0.20/0.46  
% 0.20/0.46  thf(setadjoinIR_type,type,
% 0.20/0.47      setadjoinIR: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setadjoinIR,definition,
% 0.20/0.47      ( setadjoinIR
% 0.20/0.47      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.20/0.47            ( ( in @ Xy @ A )
% 0.20/0.47           => ( in @ Xy @ ( setadjoin @ Xx @ A ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(setadjoinE_type,type,
% 0.20/0.47      setadjoinE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setadjoinE,definition,
% 0.20/0.47      ( setadjoinE
% 0.20/0.47      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.20/0.47            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.20/0.47           => ! [Xphi: $o] :
% 0.20/0.47                ( ( ( Xy = Xx )
% 0.20/0.47                 => Xphi )
% 0.20/0.47               => ( ( ( in @ Xy @ A )
% 0.20/0.47                   => Xphi )
% 0.20/0.47                 => Xphi ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(setadjoinOr_type,type,
% 0.20/0.47      setadjoinOr: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setadjoinOr,definition,
% 0.20/0.47      ( setadjoinOr
% 0.20/0.47      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 0.20/0.47            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 0.20/0.47           => ( ( Xy = Xx )
% 0.20/0.47              | ( in @ Xy @ A ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(setoftrueEq_type,type,
% 0.20/0.47      setoftrueEq: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setoftrueEq,definition,
% 0.20/0.47      ( setoftrueEq
% 0.20/0.47      = ( ! [A: $i] :
% 0.20/0.47            ( ( dsetconstr @ A
% 0.20/0.47              @ ^ [Xx: $i] : $true )
% 0.20/0.47            = A ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(powersetI_type,type,
% 0.20/0.47      powersetI: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(powersetI,definition,
% 0.20/0.47      ( powersetI
% 0.20/0.47      = ( ! [A: $i,B: $i] :
% 0.20/0.47            ( ! [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ B )
% 0.20/0.47               => ( in @ Xx @ A ) )
% 0.20/0.47           => ( in @ B @ ( powerset @ A ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyinPowerset_type,type,
% 0.20/0.47      emptyinPowerset: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyinPowerset,definition,
% 0.20/0.47      ( emptyinPowerset
% 0.20/0.47      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyInPowerset_type,type,
% 0.20/0.47      emptyInPowerset: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyInPowerset,definition,
% 0.20/0.47      ( emptyInPowerset
% 0.20/0.47      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(powersetE_type,type,
% 0.20/0.47      powersetE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(powersetE,definition,
% 0.20/0.47      ( powersetE
% 0.20/0.47      = ( ! [A: $i,B: $i,Xx: $i] :
% 0.20/0.47            ( ( in @ B @ ( powerset @ A ) )
% 0.20/0.47           => ( ( in @ Xx @ B )
% 0.20/0.47             => ( in @ Xx @ A ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(setunionI_type,type,
% 0.20/0.47      setunionI: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setunionI,definition,
% 0.20/0.47      ( setunionI
% 0.20/0.47      = ( ! [A: $i,Xx: $i,B: $i] :
% 0.20/0.47            ( ( in @ Xx @ B )
% 0.20/0.47           => ( ( in @ B @ A )
% 0.20/0.47             => ( in @ Xx @ ( setunion @ A ) ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(setunionE_type,type,
% 0.20/0.47      setunionE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(setunionE,definition,
% 0.20/0.47      ( setunionE
% 0.20/0.47      = ( ! [A: $i,Xx: $i] :
% 0.20/0.47            ( ( in @ Xx @ ( setunion @ A ) )
% 0.20/0.47           => ! [Xphi: $o] :
% 0.20/0.47                ( ! [B: $i] :
% 0.20/0.47                    ( ( in @ Xx @ B )
% 0.20/0.47                   => ( ( in @ B @ A )
% 0.20/0.47                     => Xphi ) )
% 0.20/0.47               => Xphi ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(subPowSU_type,type,
% 0.20/0.47      subPowSU: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(subPowSU,definition,
% 0.20/0.47      ( subPowSU
% 0.20/0.47      = ( ! [A: $i,Xx: $i] :
% 0.20/0.47            ( ( in @ Xx @ A )
% 0.20/0.47           => ( in @ Xx @ ( powerset @ ( setunion @ A ) ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(exuE2_type,type,
% 0.20/0.47      exuE2: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(exuE2,definition,
% 0.20/0.47      ( exuE2
% 0.20/0.47      = ( ! [Xphi: $i > $o] :
% 0.20/0.47            ( ( exu
% 0.20/0.47              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.20/0.47           => ? [Xx: $i] :
% 0.20/0.47              ! [Xy: $i] :
% 0.20/0.47                ( ( Xphi @ Xy )
% 0.20/0.47              <=> ( Xy = Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(nonemptyImpWitness_type,type,
% 0.20/0.47      nonemptyImpWitness: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(nonemptyImpWitness,definition,
% 0.20/0.47      ( nonemptyImpWitness
% 0.20/0.47      = ( ! [A: $i] :
% 0.20/0.47            ( ( nonempty @ A )
% 0.20/0.47           => ? [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47                & $true ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(uniqinunit_type,type,
% 0.20/0.47      uniqinunit: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(uniqinunit,definition,
% 0.20/0.47      ( uniqinunit
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] :
% 0.20/0.47            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 0.20/0.47           => ( Xx = Xy ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(notinsingleton_type,type,
% 0.20/0.47      notinsingleton: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(notinsingleton,definition,
% 0.20/0.47      ( notinsingleton
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] :
% 0.20/0.47            ( ( Xx != Xy )
% 0.20/0.47           => ~ ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(eqinunit_type,type,
% 0.20/0.47      eqinunit: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(eqinunit,definition,
% 0.20/0.47      ( eqinunit
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] :
% 0.20/0.47            ( ( Xx = Xy )
% 0.20/0.47           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(singletonsswitch_type,type,
% 0.20/0.47      singletonsswitch: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(singletonsswitch,definition,
% 0.20/0.47      ( singletonsswitch
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] :
% 0.20/0.47            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 0.20/0.47           => ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetE_type,type,
% 0.20/0.47      upairsetE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetE,definition,
% 0.20/0.47      ( upairsetE
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i,Xz: $i] :
% 0.20/0.47            ( ( in @ Xz @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) )
% 0.20/0.47           => ( ( Xz = Xx )
% 0.20/0.47              | ( Xz = Xy ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetIL_type,type,
% 0.20/0.47      upairsetIL: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetIL,definition,
% 0.20/0.47      ( upairsetIL
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetIR_type,type,
% 0.20/0.47      upairsetIR: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(upairsetIR,definition,
% 0.20/0.47      ( upairsetIR
% 0.20/0.47      = ( ! [Xx: $i,Xy: $i] : ( in @ Xy @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyE1_type,type,
% 0.20/0.47      emptyE1: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(emptyE1,definition,
% 0.20/0.47      ( emptyE1
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ? [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47                & ( Xphi @ Xx ) )
% 0.20/0.47           => ( ( ( dsetconstr @ A
% 0.20/0.47                  @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 0.20/0.47                = emptyset )
% 0.20/0.47             => $false ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(vacuousDall_type,type,
% 0.20/0.47      vacuousDall: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(vacuousDall,definition,
% 0.20/0.47      ( vacuousDall
% 0.20/0.47      = ( ! [Xphi: $i > $o,Xx: $i] :
% 0.20/0.47            ( ( in @ Xx @ emptyset )
% 0.20/0.47           => ( Xphi @ Xx ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan1_type,type,
% 0.20/0.47      quantDeMorgan1: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan1,definition,
% 0.20/0.47      ( quantDeMorgan1
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ~ ! [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                 => ( Xphi @ Xx ) )
% 0.20/0.47           => ? [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan2_type,type,
% 0.20/0.47      quantDeMorgan2: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan2,definition,
% 0.20/0.47      ( quantDeMorgan2
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ! [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47               => ~ ( Xphi @ Xx ) )
% 0.20/0.47           => ~ ? [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                  & ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan3_type,type,
% 0.20/0.47      quantDeMorgan3: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan3,definition,
% 0.20/0.47      ( quantDeMorgan3
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ~ ? [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                  & ( Xphi @ Xx ) )
% 0.20/0.47           => ! [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan4_type,type,
% 0.20/0.47      quantDeMorgan4: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(quantDeMorgan4,definition,
% 0.20/0.47      ( quantDeMorgan4
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ? [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47                & ~ ( Xphi @ Xx ) )
% 0.20/0.47           => ~ ! [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                 => ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(prop2setI_type,type,
% 0.20/0.47      prop2setI: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(prop2setI,definition,
% 0.20/0.47      ( prop2setI
% 0.20/0.47      = ( ! [Xphi: $o] :
% 0.20/0.47            ( Xphi
% 0.20/0.47           => ( in @ emptyset @ ( prop2set @ Xphi ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(set2prop_type,type,
% 0.20/0.47      set2prop: $i > $o ).
% 0.20/0.47  
% 0.20/0.47  thf(prop2set2propI_type,type,
% 0.20/0.47      prop2set2propI: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(prop2set2propI,definition,
% 0.20/0.47      ( prop2set2propI
% 0.20/0.47      = ( ! [Xphi: $o] :
% 0.20/0.47            ( Xphi
% 0.20/0.47           => ( set2prop @ ( prop2set @ Xphi ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(notdexE_type,type,
% 0.20/0.47      notdexE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(notdexE,definition,
% 0.20/0.47      ( notdexE
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ~ ? [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                  & ( Xphi @ Xx ) )
% 0.20/0.47           => ! [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(notdallE_type,type,
% 0.20/0.47      notdallE: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(notdallE,definition,
% 0.20/0.47      ( notdallE
% 0.20/0.47      = ( ! [A: $i,Xphi: $i > $o] :
% 0.20/0.47            ( ~ ! [Xx: $i] :
% 0.20/0.47                  ( ( in @ Xx @ A )
% 0.20/0.47                 => ( Xphi @ Xx ) )
% 0.20/0.47           => ? [Xx: $i] :
% 0.20/0.47                ( ( in @ Xx @ A )
% 0.20/0.47                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(exuI1_type,type,
% 0.20/0.47      exuI1: $o ).
% 0.20/0.47  
% 0.20/0.47  thf(exuI1,definition,
% 0.20/0.47      ( exuI1
% 0.20/0.47      = ( ! [Xphi: $i > $o] :
% 0.20/0.47            ( ? [Xx: $i] :
% 0.20/0.47                ( ( Xphi @ Xx )
% 0.20/0.47                & ! [Xy: $i] :
% 0.20/0.47                    ( ( Xphi @ Xy )
% 0.20/0.47                   => ( Xx = Xy ) ) )
% 0.20/0.47           => ( exu
% 0.20/0.47              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  thf(exuI3,conjecture,
% 0.20/0.47      ( setextAx
% 0.20/0.47     => ( emptysetAx
% 0.20/0.47       => ( setadjoinAx
% 0.20/0.47         => ( powersetAx
% 0.20/0.47           => ( setunionAx
% 0.20/0.47             => ( omega0Ax
% 0.20/0.47               => ( omegaSAx
% 0.20/0.47                 => ( omegaIndAx
% 0.20/0.47                   => ( replAx
% 0.20/0.47                     => ( foundationAx
% 0.20/0.47                       => ( wellorderingAx
% 0.20/0.47                         => ( descrp
% 0.20/0.47                           => ( dsetconstrI
% 0.20/0.47                             => ( dsetconstrEL
% 0.20/0.47                               => ( dsetconstrER
% 0.20/0.47                                 => ( exuE1
% 0.20/0.47                                   => ( prop2setE
% 0.20/0.47                                     => ( emptysetE
% 0.20/0.47                                       => ( emptysetimpfalse
% 0.20/0.47                                         => ( notinemptyset
% 0.20/0.47                                           => ( exuE3e
% 0.20/0.47                                             => ( setext
% 0.20/0.47                                               => ( emptyI
% 0.20/0.47                                                 => ( noeltsimpempty
% 0.20/0.47                                                   => ( setbeta
% 0.20/0.47                                                     => ( nonemptyE1
% 0.20/0.47                                                       => ( nonemptyI
% 0.20/0.47                                                         => ( nonemptyI1
% 0.20/0.47                                                           => ( setadjoinIL
% 0.20/0.47                                                             => ( emptyinunitempty
% 0.20/0.47                                                               => ( setadjoinIR
% 0.20/0.47                                                                 => ( setadjoinE
% 0.20/0.47                                                                   => ( setadjoinOr
% 0.20/0.47                                                                     => ( setoftrueEq
% 0.20/0.47                                                                       => ( powersetI
% 0.20/0.47                                                                         => ( emptyinPowerset
% 0.20/0.47                                                                           => ( emptyInPowerset
% 0.20/0.47                                                                             => ( powersetE
% 0.20/0.47                                                                               => ( setunionI
% 0.20/0.47                                                                                 => ( setunionE
% 0.20/0.47                                                                                   => ( subPowSU
% 0.20/0.47                                                                                     => ( exuE2
% 0.20/0.47                                                                                       => ( nonemptyImpWitness
% 0.20/0.47                                                                                         => ( uniqinunit
% 0.20/0.47                                                                                           => ( notinsingleton
% 0.20/0.47                                                                                             => ( eqinunit
% 0.20/0.47                                                                                               => ( singletonsswitch
% 0.20/0.47                                                                                                 => ( upairsetE
% 0.20/0.47                                                                                                   => ( upairsetIL
% 0.20/0.47                                                                                                     => ( upairsetIR
% 0.20/0.47                                                                                                       => ( emptyE1
% 0.20/0.47                                                                                                         => ( vacuousDall
% 0.20/0.47                                                                                                           => ( quantDeMorgan1
% 0.20/0.47                                                                                                             => ( quantDeMorgan2
% 0.20/0.47                                                                                                               => ( quantDeMorgan3
% 0.20/0.47                                                                                                                 => ( quantDeMorgan4
% 0.20/0.47                                                                                                                   => ( prop2setI
% 0.20/0.47                                                                                                                     => ( prop2set2propI
% 0.20/0.47                                                                                                                       => ( notdexE
% 0.20/0.47                                                                                                                         => ( notdallE
% 0.20/0.47                                                                                                                           => ( exuI1
% 0.20/0.47                                                                                                                             => ! [Xphi: $i > $o] :
% 0.20/0.47                                                                                                                                  ( ? [Xx: $i] : ( Xphi @ Xx )
% 0.20/0.47                                                                                                                                 => ( ! [Xx: $i,Xy: $i] :
% 0.20/0.47                                                                                                                                        ( ( Xphi @ Xx )
% 0.20/0.47                                                                                                                                       => ( ( Xphi @ Xy )
% 0.20/0.47                                                                                                                                         => ( Xx = Xy ) ) )
% 0.20/0.47                                                                                                                                   => ( exu
% 0.20/0.47                                                                                                                                      @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).
% 0.20/0.47  
% 0.20/0.47  %------------------------------------------------------------------------------
% 0.20/0.47  ------------------------
% 2.13/1.42  ---- Embedded in THF ---
% 2.13/1.42  %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 2.13/1.42  %%% Generated on Tue Feb 24 12:26:56 EST 2026
% 2.13/1.42  %%% using '$$dhol' embedding, version 1.3.0.
% 2.13/1.42  %%% Logic specification used:
% 2.13/1.42  %%% thf(spec, logic, $$dhol).
% 2.13/1.42  
% 2.13/1.42  % SZS output start ListOfTHF for /export/starexec/sandbox/tmp/tmp.V2DC10xSo5/DTF2DTF32358.p
% See solution above
% 2.13/1.42  ------------------------
% 2.13/1.44  ---- Cleaned THF ---
% 2.13/1.44  thf(in_type,type,
% 2.13/1.44      in: $i > $i > $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exu_type,type,
% 2.13/1.44      exu: ( $i > $o ) > $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exu,definition,
% 2.13/1.44      ( exu
% 2.13/1.44      = ( ^ [Xphi: $i > $o] :
% 2.13/1.44          ? [Xx: $i] :
% 2.13/1.44            ( ( Xphi @ Xx )
% 2.13/1.44            & ! [Xy: $i] :
% 2.13/1.44                ( ( Xphi @ Xy )
% 2.13/1.44               => ( Xx = Xy ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setextAx_type,type,
% 2.13/1.44      setextAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setextAx,definition,
% 2.13/1.44      ( setextAx
% 2.13/1.44      = ( ! [A: $i,B: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44              <=> ( in @ Xx @ B ) )
% 2.13/1.44           => ( A = B ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyset_type,type,
% 2.13/1.44      emptyset: $i ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetAx_type,type,
% 2.13/1.44      emptysetAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetAx,definition,
% 2.13/1.44      ( emptysetAx
% 2.13/1.44      = ( ! [Xx: $i] :
% 2.13/1.44            ~ ( in @ Xx @ emptyset ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoin_type,type,
% 2.13/1.44      setadjoin: $i > $i > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinAx_type,type,
% 2.13/1.44      setadjoinAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinAx,definition,
% 2.13/1.44      ( setadjoinAx
% 2.13/1.44      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.13/1.44          <=> ( ( Xy = Xx )
% 2.13/1.44              | ( in @ Xy @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(powerset_type,type,
% 2.13/1.44      powerset: $i > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetAx_type,type,
% 2.13/1.44      powersetAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetAx,definition,
% 2.13/1.44      ( powersetAx
% 2.13/1.44      = ( ! [A: $i,B: $i] :
% 2.13/1.44            ( ( in @ B @ ( powerset @ A ) )
% 2.13/1.44          <=> ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ B )
% 2.13/1.44               => ( in @ Xx @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setunion_type,type,
% 2.13/1.44      setunion: $i > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionAx_type,type,
% 2.13/1.44      setunionAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionAx,definition,
% 2.13/1.44      ( setunionAx
% 2.13/1.44      = ( ! [A: $i,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ ( setunion @ A ) )
% 2.13/1.44          <=> ? [B: $i] :
% 2.13/1.44                ( ( in @ Xx @ B )
% 2.13/1.44                & ( in @ B @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(omega_type,type,
% 2.13/1.44      omega: $i ).
% 2.13/1.44  
% 2.13/1.44  thf(omega0Ax_type,type,
% 2.13/1.44      omega0Ax: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(omega0Ax,definition,
% 2.13/1.44      ( omega0Ax
% 2.13/1.44      = ( in @ emptyset @ omega ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(omegaSAx_type,type,
% 2.13/1.44      omegaSAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(omegaSAx,definition,
% 2.13/1.44      ( omegaSAx
% 2.13/1.44      = ( ! [Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ omega )
% 2.13/1.44           => ( in @ ( setadjoin @ Xx @ Xx ) @ omega ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(omegaIndAx_type,type,
% 2.13/1.44      omegaIndAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(omegaIndAx,definition,
% 2.13/1.44      ( omegaIndAx
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ( ( in @ emptyset @ A )
% 2.13/1.44              & ! [Xx: $i] :
% 2.13/1.44                  ( ( ( in @ Xx @ omega )
% 2.13/1.44                    & ( in @ Xx @ A ) )
% 2.13/1.44                 => ( in @ ( setadjoin @ Xx @ Xx ) @ A ) ) )
% 2.13/1.44           => ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ omega )
% 2.13/1.44               => ( in @ Xx @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(replAx_type,type,
% 2.13/1.44      replAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(replAx,definition,
% 2.13/1.44      ( replAx
% 2.13/1.44      = ( ! [Xphi: $i > $i > $o,A: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44               => ( exu
% 2.13/1.44                  @ ^ [Xy: $i] : ( Xphi @ Xx @ Xy ) ) )
% 2.13/1.44           => ? [B: $i] :
% 2.13/1.44              ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ B )
% 2.13/1.44              <=> ? [Xy: $i] :
% 2.13/1.44                    ( ( in @ Xy @ A )
% 2.13/1.44                    & ( Xphi @ Xy @ Xx ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(foundationAx_type,type,
% 2.13/1.44      foundationAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(foundationAx,definition,
% 2.13/1.44      ( foundationAx
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ? [Xx: $i] : ( in @ Xx @ A )
% 2.13/1.44           => ? [B: $i] :
% 2.13/1.44                ( ( in @ B @ A )
% 2.13/1.44                & ~ ? [Xx: $i] :
% 2.13/1.44                      ( ( in @ Xx @ B )
% 2.13/1.44                      & ( in @ Xx @ A ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(wellorderingAx_type,type,
% 2.13/1.44      wellorderingAx: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(wellorderingAx,definition,
% 2.13/1.44      ( wellorderingAx
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44          ? [B: $i] :
% 2.13/1.44            ( ! [C: $i] :
% 2.13/1.44                ( ( in @ C @ B )
% 2.13/1.44               => ! [Xx: $i] :
% 2.13/1.44                    ( ( in @ Xx @ C )
% 2.13/1.44                   => ( in @ Xx @ A ) ) )
% 2.13/1.44            & ! [Xx: $i,Xy: $i] :
% 2.13/1.44                ( ( ( in @ Xx @ A )
% 2.13/1.44                  & ( in @ Xy @ A ) )
% 2.13/1.44               => ( ! [C: $i] :
% 2.13/1.44                      ( ( in @ C @ B )
% 2.13/1.44                     => ( ( in @ Xx @ C )
% 2.13/1.44                      <=> ( in @ Xy @ C ) ) )
% 2.13/1.44                 => ( Xx = Xy ) ) )
% 2.13/1.44            & ! [C: $i,D: $i] :
% 2.13/1.44                ( ( ( in @ C @ B )
% 2.13/1.44                  & ( in @ D @ B ) )
% 2.13/1.44               => ( ! [Xx: $i] :
% 2.13/1.44                      ( ( in @ Xx @ C )
% 2.13/1.44                     => ( in @ Xx @ D ) )
% 2.13/1.44                  | ! [Xx: $i] :
% 2.13/1.44                      ( ( in @ Xx @ D )
% 2.13/1.44                     => ( in @ Xx @ C ) ) ) )
% 2.13/1.44            & ! [C: $i] :
% 2.13/1.44                ( ( ! [Xx: $i] :
% 2.13/1.44                      ( ( in @ Xx @ C )
% 2.13/1.44                     => ( in @ Xx @ A ) )
% 2.13/1.44                  & ? [Xx: $i] : ( in @ Xx @ C ) )
% 2.13/1.44               => ? [D: $i,Xx: $i] :
% 2.13/1.44                    ( ( in @ D @ B )
% 2.13/1.44                    & ( in @ Xx @ C )
% 2.13/1.44                    & ~ ? [Xy: $i] :
% 2.13/1.44                          ( ( in @ Xy @ D )
% 2.13/1.44                          & ( in @ Xy @ C ) )
% 2.13/1.44                    & ! [E: $i] :
% 2.13/1.44                        ( ( in @ E @ B )
% 2.13/1.44                       => ( ! [Xy: $i] :
% 2.13/1.44                              ( ( in @ Xy @ E )
% 2.13/1.44                             => ( in @ Xy @ D ) )
% 2.13/1.44                          | ( in @ Xx @ E ) ) ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(descr_type,type,
% 2.13/1.44      descr: ( $i > $o ) > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(descrp_type,type,
% 2.13/1.44      descrp: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(descrp,definition,
% 2.13/1.44      ( descrp
% 2.13/1.44      = ( ! [Xphi: $i > $o] :
% 2.13/1.44            ( ( exu
% 2.13/1.44              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.13/1.44           => ( Xphi
% 2.13/1.44              @ ( descr
% 2.13/1.44                @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstr_type,type,
% 2.13/1.44      dsetconstr: $i > ( $i > $o ) > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrI_type,type,
% 2.13/1.44      dsetconstrI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrI,definition,
% 2.13/1.44      ( dsetconstrI
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ A )
% 2.13/1.44           => ( ( Xphi @ Xx )
% 2.13/1.44             => ( in @ Xx
% 2.13/1.44                @ ( dsetconstr @ A
% 2.13/1.44                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrEL_type,type,
% 2.13/1.44      dsetconstrEL: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrEL,definition,
% 2.13/1.44      ( dsetconstrEL
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx
% 2.13/1.44              @ ( dsetconstr @ A
% 2.13/1.44                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.13/1.44           => ( in @ Xx @ A ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrER_type,type,
% 2.13/1.44      dsetconstrER: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(dsetconstrER,definition,
% 2.13/1.44      ( dsetconstrER
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx
% 2.13/1.44              @ ( dsetconstr @ A
% 2.13/1.44                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.13/1.44           => ( Xphi @ Xx ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE1_type,type,
% 2.13/1.44      exuE1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE1,definition,
% 2.13/1.44      ( exuE1
% 2.13/1.44      = ( ! [Xphi: $i > $o] :
% 2.13/1.44            ( ( exu
% 2.13/1.44              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.13/1.44           => ? [Xx: $i] :
% 2.13/1.44                ( ( Xphi @ Xx )
% 2.13/1.44                & ! [Xy: $i] :
% 2.13/1.44                    ( ( Xphi @ Xy )
% 2.13/1.44                   => ( Xx = Xy ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2set_type,type,
% 2.13/1.44      prop2set: $o > $i ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2setE_type,type,
% 2.13/1.44      prop2setE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2setE,definition,
% 2.13/1.44      ( prop2setE
% 2.13/1.44      = ( ! [Xphi: $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ ( prop2set @ Xphi ) )
% 2.13/1.44           => Xphi ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetE_type,type,
% 2.13/1.44      emptysetE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetE,definition,
% 2.13/1.44      ( emptysetE
% 2.13/1.44      = ( ! [Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ emptyset )
% 2.13/1.44           => ! [Xphi: $o] : Xphi ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetimpfalse_type,type,
% 2.13/1.44      emptysetimpfalse: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptysetimpfalse,definition,
% 2.13/1.44      ( emptysetimpfalse
% 2.13/1.44      = ( ! [Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ emptyset )
% 2.13/1.44           => $false ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(notinemptyset_type,type,
% 2.13/1.44      notinemptyset: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(notinemptyset,definition,
% 2.13/1.44      ( notinemptyset
% 2.13/1.44      = ( ! [Xx: $i] :
% 2.13/1.44            ~ ( in @ Xx @ emptyset ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE3e_type,type,
% 2.13/1.44      exuE3e: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE3e,definition,
% 2.13/1.44      ( exuE3e
% 2.13/1.44      = ( ! [Xphi: $i > $o] :
% 2.13/1.44            ( ( exu
% 2.13/1.44              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.13/1.44           => ? [Xx: $i] : ( Xphi @ Xx ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setext_type,type,
% 2.13/1.44      setext: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setext,definition,
% 2.13/1.44      ( setext
% 2.13/1.44      = ( ! [A: $i,B: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44               => ( in @ Xx @ B ) )
% 2.13/1.44           => ( ! [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ B )
% 2.13/1.44                 => ( in @ Xx @ A ) )
% 2.13/1.44             => ( A = B ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyI_type,type,
% 2.13/1.44      emptyI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyI,definition,
% 2.13/1.44      ( emptyI
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ~ ( in @ Xx @ A )
% 2.13/1.44           => ( A = emptyset ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(noeltsimpempty_type,type,
% 2.13/1.44      noeltsimpempty: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(noeltsimpempty,definition,
% 2.13/1.44      ( noeltsimpempty
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ~ ( in @ Xx @ A )
% 2.13/1.44           => ( A = emptyset ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setbeta_type,type,
% 2.13/1.44      setbeta: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setbeta,definition,
% 2.13/1.44      ( setbeta
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ A )
% 2.13/1.44           => ( ( in @ Xx
% 2.13/1.44                @ ( dsetconstr @ A
% 2.13/1.44                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 2.13/1.44            <=> ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(nonempty_type,type,
% 2.13/1.44      nonempty: $i > $o ).
% 2.13/1.44  
% 2.13/1.44  thf(nonempty,definition,
% 2.13/1.44      ( nonempty
% 2.13/1.44      = ( ^ [Xx: $i] : ( Xx != emptyset ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyE1_type,type,
% 2.13/1.44      nonemptyE1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyE1,definition,
% 2.13/1.44      ( nonemptyE1
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ( nonempty @ A )
% 2.13/1.44           => ? [Xx: $i] : ( in @ Xx @ A ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyI_type,type,
% 2.13/1.44      nonemptyI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyI,definition,
% 2.13/1.44      ( nonemptyI
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ A )
% 2.13/1.44           => ( ( Xphi @ Xx )
% 2.13/1.44             => ( nonempty
% 2.13/1.44                @ ( dsetconstr @ A
% 2.13/1.44                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyI1_type,type,
% 2.13/1.44      nonemptyI1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyI1,definition,
% 2.13/1.44      ( nonemptyI1
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ? [Xx: $i] : ( in @ Xx @ A )
% 2.13/1.44           => ( nonempty @ A ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinIL_type,type,
% 2.13/1.44      setadjoinIL: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinIL,definition,
% 2.13/1.44      ( setadjoinIL
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ Xy ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyinunitempty_type,type,
% 2.13/1.44      emptyinunitempty: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyinunitempty,definition,
% 2.13/1.44      ( emptyinunitempty
% 2.13/1.44      = ( in @ emptyset @ ( setadjoin @ emptyset @ emptyset ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinIR_type,type,
% 2.13/1.44      setadjoinIR: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinIR,definition,
% 2.13/1.44      ( setadjoinIR
% 2.13/1.44      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xy @ A )
% 2.13/1.44           => ( in @ Xy @ ( setadjoin @ Xx @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinE_type,type,
% 2.13/1.44      setadjoinE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinE,definition,
% 2.13/1.44      ( setadjoinE
% 2.13/1.44      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.13/1.44           => ! [Xphi: $o] :
% 2.13/1.44                ( ( ( Xy = Xx )
% 2.13/1.44                 => Xphi )
% 2.13/1.44               => ( ( ( in @ Xy @ A )
% 2.13/1.44                   => Xphi )
% 2.13/1.44                 => Xphi ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinOr_type,type,
% 2.13/1.44      setadjoinOr: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setadjoinOr,definition,
% 2.13/1.44      ( setadjoinOr
% 2.13/1.44      = ( ! [Xx: $i,A: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xy @ ( setadjoin @ Xx @ A ) )
% 2.13/1.44           => ( ( Xy = Xx )
% 2.13/1.44              | ( in @ Xy @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setoftrueEq_type,type,
% 2.13/1.44      setoftrueEq: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setoftrueEq,definition,
% 2.13/1.44      ( setoftrueEq
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ( dsetconstr @ A
% 2.13/1.44              @ ^ [Xx: $i] : $true )
% 2.13/1.44            = A ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetI_type,type,
% 2.13/1.44      powersetI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetI,definition,
% 2.13/1.44      ( powersetI
% 2.13/1.44      = ( ! [A: $i,B: $i] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ B )
% 2.13/1.44               => ( in @ Xx @ A ) )
% 2.13/1.44           => ( in @ B @ ( powerset @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyinPowerset_type,type,
% 2.13/1.44      emptyinPowerset: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyinPowerset,definition,
% 2.13/1.44      ( emptyinPowerset
% 2.13/1.44      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyInPowerset_type,type,
% 2.13/1.44      emptyInPowerset: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyInPowerset,definition,
% 2.13/1.44      ( emptyInPowerset
% 2.13/1.44      = ( ! [A: $i] : ( in @ emptyset @ ( powerset @ A ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetE_type,type,
% 2.13/1.44      powersetE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(powersetE,definition,
% 2.13/1.44      ( powersetE
% 2.13/1.44      = ( ! [A: $i,B: $i,Xx: $i] :
% 2.13/1.44            ( ( in @ B @ ( powerset @ A ) )
% 2.13/1.44           => ( ( in @ Xx @ B )
% 2.13/1.44             => ( in @ Xx @ A ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionI_type,type,
% 2.13/1.44      setunionI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionI,definition,
% 2.13/1.44      ( setunionI
% 2.13/1.44      = ( ! [A: $i,Xx: $i,B: $i] :
% 2.13/1.44            ( ( in @ Xx @ B )
% 2.13/1.44           => ( ( in @ B @ A )
% 2.13/1.44             => ( in @ Xx @ ( setunion @ A ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionE_type,type,
% 2.13/1.44      setunionE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(setunionE,definition,
% 2.13/1.44      ( setunionE
% 2.13/1.44      = ( ! [A: $i,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ ( setunion @ A ) )
% 2.13/1.44           => ! [Xphi: $o] :
% 2.13/1.44                ( ! [B: $i] :
% 2.13/1.44                    ( ( in @ Xx @ B )
% 2.13/1.44                   => ( ( in @ B @ A )
% 2.13/1.44                     => Xphi ) )
% 2.13/1.44               => Xphi ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(subPowSU_type,type,
% 2.13/1.44      subPowSU: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(subPowSU,definition,
% 2.13/1.44      ( subPowSU
% 2.13/1.44      = ( ! [A: $i,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ A )
% 2.13/1.44           => ( in @ Xx @ ( powerset @ ( setunion @ A ) ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE2_type,type,
% 2.13/1.44      exuE2: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exuE2,definition,
% 2.13/1.44      ( exuE2
% 2.13/1.44      = ( ! [Xphi: $i > $o] :
% 2.13/1.44            ( ( exu
% 2.13/1.44              @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.13/1.44           => ? [Xx: $i] :
% 2.13/1.44              ! [Xy: $i] :
% 2.13/1.44                ( ( Xphi @ Xy )
% 2.13/1.44              <=> ( Xy = Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyImpWitness_type,type,
% 2.13/1.44      nonemptyImpWitness: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(nonemptyImpWitness,definition,
% 2.13/1.44      ( nonemptyImpWitness
% 2.13/1.44      = ( ! [A: $i] :
% 2.13/1.44            ( ( nonempty @ A )
% 2.13/1.44           => ? [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44                & $true ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(uniqinunit_type,type,
% 2.13/1.44      uniqinunit: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(uniqinunit,definition,
% 2.13/1.44      ( uniqinunit
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 2.13/1.44           => ( Xx = Xy ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(notinsingleton_type,type,
% 2.13/1.44      notinsingleton: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(notinsingleton,definition,
% 2.13/1.44      ( notinsingleton
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] :
% 2.13/1.44            ( ( Xx != Xy )
% 2.13/1.44           => ~ ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(eqinunit_type,type,
% 2.13/1.44      eqinunit: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(eqinunit,definition,
% 2.13/1.44      ( eqinunit
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] :
% 2.13/1.44            ( ( Xx = Xy )
% 2.13/1.44           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(singletonsswitch_type,type,
% 2.13/1.44      singletonsswitch: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(singletonsswitch,definition,
% 2.13/1.44      ( singletonsswitch
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] :
% 2.13/1.44            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 2.13/1.44           => ( in @ Xy @ ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetE_type,type,
% 2.13/1.44      upairsetE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetE,definition,
% 2.13/1.44      ( upairsetE
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i,Xz: $i] :
% 2.13/1.44            ( ( in @ Xz @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) )
% 2.13/1.44           => ( ( Xz = Xx )
% 2.13/1.44              | ( Xz = Xy ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetIL_type,type,
% 2.13/1.44      upairsetIL: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetIL,definition,
% 2.13/1.44      ( upairsetIL
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] : ( in @ Xx @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetIR_type,type,
% 2.13/1.44      upairsetIR: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(upairsetIR,definition,
% 2.13/1.44      ( upairsetIR
% 2.13/1.44      = ( ! [Xx: $i,Xy: $i] : ( in @ Xy @ ( setadjoin @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyE1_type,type,
% 2.13/1.44      emptyE1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(emptyE1,definition,
% 2.13/1.44      ( emptyE1
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ? [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44                & ( Xphi @ Xx ) )
% 2.13/1.44           => ( ( ( dsetconstr @ A
% 2.13/1.44                  @ ^ [Xx: $i] : ( Xphi @ Xx ) )
% 2.13/1.44                = emptyset )
% 2.13/1.44             => $false ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(vacuousDall_type,type,
% 2.13/1.44      vacuousDall: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(vacuousDall,definition,
% 2.13/1.44      ( vacuousDall
% 2.13/1.44      = ( ! [Xphi: $i > $o,Xx: $i] :
% 2.13/1.44            ( ( in @ Xx @ emptyset )
% 2.13/1.44           => ( Xphi @ Xx ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan1_type,type,
% 2.13/1.44      quantDeMorgan1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan1,definition,
% 2.13/1.44      ( quantDeMorgan1
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ~ ! [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                 => ( Xphi @ Xx ) )
% 2.13/1.44           => ? [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan2_type,type,
% 2.13/1.44      quantDeMorgan2: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan2,definition,
% 2.13/1.44      ( quantDeMorgan2
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44               => ~ ( Xphi @ Xx ) )
% 2.13/1.44           => ~ ? [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                  & ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan3_type,type,
% 2.13/1.44      quantDeMorgan3: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan3,definition,
% 2.13/1.44      ( quantDeMorgan3
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ~ ? [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                  & ( Xphi @ Xx ) )
% 2.13/1.44           => ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan4_type,type,
% 2.13/1.44      quantDeMorgan4: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(quantDeMorgan4,definition,
% 2.13/1.44      ( quantDeMorgan4
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ? [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44                & ~ ( Xphi @ Xx ) )
% 2.13/1.44           => ~ ! [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                 => ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2setI_type,type,
% 2.13/1.44      prop2setI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2setI,definition,
% 2.13/1.44      ( prop2setI
% 2.13/1.44      = ( ! [Xphi: $o] :
% 2.13/1.44            ( Xphi
% 2.13/1.44           => ( in @ emptyset @ ( prop2set @ Xphi ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(set2prop_type,type,
% 2.13/1.44      set2prop: $i > $o ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2set2propI_type,type,
% 2.13/1.44      prop2set2propI: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(prop2set2propI,definition,
% 2.13/1.44      ( prop2set2propI
% 2.13/1.44      = ( ! [Xphi: $o] :
% 2.13/1.44            ( Xphi
% 2.13/1.44           => ( set2prop @ ( prop2set @ Xphi ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(notdexE_type,type,
% 2.13/1.44      notdexE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(notdexE,definition,
% 2.13/1.44      ( notdexE
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ~ ? [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                  & ( Xphi @ Xx ) )
% 2.13/1.44           => ! [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44               => ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(notdallE_type,type,
% 2.13/1.44      notdallE: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(notdallE,definition,
% 2.13/1.44      ( notdallE
% 2.13/1.44      = ( ! [A: $i,Xphi: $i > $o] :
% 2.13/1.44            ( ~ ! [Xx: $i] :
% 2.13/1.44                  ( ( in @ Xx @ A )
% 2.13/1.44                 => ( Xphi @ Xx ) )
% 2.13/1.44           => ? [Xx: $i] :
% 2.13/1.44                ( ( in @ Xx @ A )
% 2.13/1.44                & ~ ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(exuI1_type,type,
% 2.13/1.44      exuI1: $o ).
% 2.13/1.44  
% 2.13/1.44  thf(exuI1,definition,
% 2.13/1.44      ( exuI1
% 2.13/1.44      = ( ! [Xphi: $i > $o] :
% 2.13/1.44            ( ? [Xx: $i] :
% 2.13/1.44                ( ( Xphi @ Xx )
% 2.13/1.44                & ! [Xy: $i] :
% 2.13/1.44                    ( ( Xphi @ Xy )
% 2.13/1.44                   => ( Xx = Xy ) ) )
% 2.13/1.44           => ( exu
% 2.13/1.44              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 2.13/1.44  
% 2.13/1.44  thf(exuI3,conjecture,
% 2.13/1.44      ( setextAx
% 2.13/1.44     => ( emptysetAx
% 2.13/1.44       => ( setadjoinAx
% 2.13/1.44         => ( powersetAx
% 2.13/1.44           => ( setunionAx
% 2.13/1.44             => ( omega0Ax
% 2.13/1.44               => ( omegaSAx
% 2.13/1.44                 => ( omegaIndAx
% 2.13/1.44                   => ( replAx
% 2.13/1.44                     => ( foundationAx
% 2.13/1.44                       => ( wellorderingAx
% 2.13/1.44                         => ( descrp
% 2.13/1.44                           => ( dsetconstrI
% 2.13/1.44                             => ( dsetconstrEL
% 2.13/1.44                               => ( dsetconstrER
% 2.13/1.44                                 => ( exuE1
% 2.13/1.44                                   => ( prop2setE
% 2.13/1.44                                     => ( emptysetE
% 2.13/1.44                                       => ( emptysetimpfalse
% 2.13/1.44                                         => ( notinemptyset
% 2.13/1.44                                           => ( exuE3e
% 2.13/1.44                                             => ( setext
% 2.13/1.44                                               => ( emptyI
% 2.13/1.44                                                 => ( noeltsimpempty
% 2.13/1.44                                                   => ( setbeta
% 2.13/1.44                                                     => ( nonemptyE1
% 2.13/1.44                                                       => ( nonemptyI
% 2.13/1.44                                                         => ( nonemptyI1
% 2.13/1.44                                                           => ( setadjoinIL
% 2.13/1.44                                                             => ( emptyinunitempty
% 2.13/1.44                                                               => ( setadjoinIR
% 2.13/1.44                                                                 => ( setadjoinE
% 2.13/1.44                                                                   => ( setadjoinOr
% 2.13/1.44                                                                     => ( setoftrueEq
% 2.13/1.44                                                                       => ( powersetI
% 2.13/1.44                                                                         => ( emptyinPowerset
% 2.13/1.44                                                                           => ( emptyInPowerset
% 2.13/1.44                                                                             => ( powersetE
% 2.13/1.44                                                                               => ( setunionI
% 2.13/1.44                                                                                 => ( setunionE
% 2.13/1.44                                                                                   => ( subPowSU
% 2.13/1.44                                                                                     => ( exuE2
% 2.13/1.44                                                                                       => ( nonemptyImpWitness
% 2.13/1.44                                                                                         => ( uniqinunit
% 2.13/1.44                                                                                           => ( notinsingleton
% 2.13/1.44                                                                                             => ( eqinunit
% 2.13/1.44                                                                                               => ( singletonsswitch
% 2.13/1.44                                                                                                 => ( upairsetE
% 2.13/1.44                                                                                                   => ( upairsetIL
% 2.13/1.44                                                                                                     => ( upairsetIR
% 2.13/1.44                                                                                                       => ( emptyE1
% 2.13/1.44                                                                                                         => ( vacuousDall
% 2.13/1.44                                                                                                           => ( quantDeMorgan1
% 2.13/1.44                                                                                                             => ( quantDeMorgan2
% 2.13/1.44                                                                                                               => ( quantDeMorgan3
% 2.13/1.44                                                                                                                 => ( quantDeMorgan4
% 2.13/1.44                                                                                                                   => ( prop2setI
% 2.13/1.44                                                                                                                     => ( prop2set2propI
% 2.13/1.44                                                                                                                       => ( notdexE
% 2.13/1.44                                                                                                                         => ( notdallE
% 2.13/1.44                                                                                                                           => ( exuI1
% 2.13/1.44                                                                                                                             => ! [Xphi: $i > $o] :
% 2.13/1.44                                                                                                                                  ( ? [Xx: $i] : ( Xphi @ Xx )
% 2.13/1.44                                                                                                                                 => ( ! [Xx: $i,Xy: $i] :
% 2.13/1.44                                                                                                                                        ( ( Xphi @ Xx )
% 2.13/1.44                                                                                                                                       => ( ( Xphi @ Xy )
% 2.13/1.44                                                                                                                                         => ( Xx = Xy ) ) )
% 2.13/1.44                                                                                                                                   => ( exu
% 2.13/1.44                                                                                                                                      @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ).
% 2.13/1.44  ------------------------
% 2.13/1.46  % (32549)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/183Mi)
% 2.13/1.46  % (32550)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_32358 for (2999ds/4Mi)
% 2.13/1.46  % (32550)Instruction limit reached!
% 2.13/1.46  % (32550)------------------------------
% 2.13/1.46  % (32550)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.46  % (32550)Termination reason: Unknown
% 2.13/1.46  % (32550)Termination phase: shuffling
% 2.13/1.46  
% 2.13/1.46  % (32550)Memory used [KB]: 1151
% 2.13/1.46  % (32550)Time elapsed: 0.003 s
% 2.13/1.46  % (32554)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_32358 for (2999ds/275Mi)
% 2.13/1.46  % (32550)Instructions burned: 7 (million)
% 2.13/1.46  % (32550)------------------------------
% 2.13/1.46  % (32550)------------------------------
% 2.13/1.46  % (32552)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/2Mi)
% 2.13/1.46  % (32552)Instruction limit reached!
% 2.13/1.46  % (32552)------------------------------
% 2.13/1.46  % (32552)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.46  % (32552)Termination reason: Unknown
% 2.13/1.46  % (32552)Termination phase: shuffling
% 2.13/1.46  
% 2.13/1.46  % (32552)Memory used [KB]: 1023
% 2.13/1.46  % (32552)Time elapsed: 0.002 s
% 2.13/1.46  % (32552)Instructions burned: 2 (million)
% 2.13/1.46  % (32552)------------------------------
% 2.13/1.46  % (32552)------------------------------
% 2.13/1.47  % (32551)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_32358 for (2999ds/27Mi)
% 2.13/1.47  % (32553)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_32358 for (2999ds/2Mi)
% 2.13/1.47  % (32553)Instruction limit reached!
% 2.13/1.47  % (32553)------------------------------
% 2.13/1.47  % (32553)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.47  % (32553)Termination reason: Unknown
% 2.13/1.47  % (32553)Termination phase: shuffling
% 2.13/1.47  
% 2.13/1.47  % (32553)Memory used [KB]: 1151
% 2.13/1.47  % (32553)Time elapsed: 0.004 s
% 2.13/1.47  % (32553)Instructions burned: 3 (million)
% 2.13/1.47  % (32553)------------------------------
% 2.13/1.47  % (32553)------------------------------
% 2.13/1.47  % (32555)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/18Mi)
% 2.13/1.47  % (32556)lrs+10_1:1_bet=on:cnfonf=off:fd=off:hud=5:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/3Mi)
% 2.13/1.47  % (32556)Instruction limit reached!
% 2.13/1.47  % (32556)------------------------------
% 2.13/1.47  % (32556)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.47  % (32556)Termination reason: Unknown
% 2.13/1.47  % (32556)Termination phase: shuffling
% 2.13/1.47  
% 2.13/1.47  % (32556)Memory used [KB]: 1151
% 2.13/1.47  % (32556)Time elapsed: 0.002 s
% 2.13/1.47  % (32556)Instructions burned: 4 (million)
% 2.13/1.47  % (32556)------------------------------
% 2.13/1.47  % (32556)------------------------------
% 2.13/1.48  % (32555)Instruction limit reached!
% 2.13/1.48  % (32555)------------------------------
% 2.13/1.48  % (32555)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.48  % (32555)Termination reason: Unknown
% 2.13/1.48  % (32555)Termination phase: Preprocessing 3
% 2.13/1.48  
% 2.13/1.48  % (32555)Memory used [KB]: 1535
% 2.13/1.48  % (32555)Time elapsed: 0.009 s
% 2.13/1.48  % (32555)Instructions burned: 18 (million)
% 2.13/1.48  % (32555)------------------------------
% 2.13/1.48  % (32555)------------------------------
% 2.13/1.48  % (32557)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_32358 for (2999ds/37Mi)
% 2.13/1.48  % (32551)Instruction limit reached!
% 2.13/1.48  % (32551)------------------------------
% 2.13/1.48  % (32551)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.48  % (32551)Termination reason: Unknown
% 2.13/1.48  % (32551)Termination phase: Property scanning
% 2.13/1.48  
% 2.13/1.48  % (32551)Memory used [KB]: 1407
% 2.13/1.48  % (32551)Time elapsed: 0.016 s
% 2.13/1.48  % (32551)Instructions burned: 28 (million)
% 2.13/1.48  % (32551)------------------------------
% 2.13/1.48  % (32551)------------------------------
% 2.13/1.49  % (32559)dis+21_1:1_cbe=off:cnfonf=off:fs=off:fsr=off:hud=1:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/3Mi)
% 2.13/1.49  % (32559)Instruction limit reached!
% 2.13/1.49  % (32559)------------------------------
% 2.13/1.49  % (32559)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.49  % (32559)Termination reason: Unknown
% 2.13/1.49  % (32559)Termination phase: shuffling
% 2.13/1.49  
% 2.13/1.49  % (32559)Memory used [KB]: 1151
% 2.13/1.49  % (32559)Time elapsed: 0.002 s
% 2.13/1.49  % (32559)Instructions burned: 4 (million)
% 2.13/1.49  % (32559)------------------------------
% 2.13/1.49  % (32559)------------------------------
% 2.13/1.49  % (32558)lrs+2_16:1_acc=model:au=on:bd=off:c=on:e2e=on:nm=2:sos=all:i=15:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/15Mi)
% 2.13/1.49  % (32549)First to succeed.
% 2.13/1.49  % (32557)Instruction limit reached!
% 2.13/1.49  % (32557)------------------------------
% 2.13/1.49  % (32557)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.49  % (32557)Termination reason: Unknown
% 2.13/1.49  % (32557)Termination phase: Saturation
% 2.13/1.49  
% 2.13/1.49  % (32557)Memory used [KB]: 5884
% 2.13/1.49  % (32557)Time elapsed: 0.013 s
% 2.13/1.49  % (32557)Instructions burned: 39 (million)
% 2.13/1.49  % (32557)------------------------------
% 2.13/1.49  % (32557)------------------------------
% 2.13/1.49  % (32560)lrs+1002_1:1_aac=none:au=on:cnfonf=lazy_gen:plsq=on:plsqc=1:plsqr=4203469,65536:i=1041:si=on:rtra=on_0 on DTF2THF_32358 for (2999ds/1041Mi)
% 2.13/1.49  % (32549)Refutation found. Thanks to Tanya!
% 2.13/1.49  % SZS status Theorem for DTF2THF_32358
% 2.13/1.49  % SZS output start Proof for DTF2THF_32358
% 2.13/1.49  thf(func_def_0, type, in: $i > $i > $o).
% 2.13/1.49  thf(func_def_1, type, exu: ($i > $o) > $o).
% 2.13/1.49  thf(func_def_6, type, setadjoin: $i > $i > $i).
% 2.13/1.49  thf(func_def_8, type, powerset: $i > $i).
% 2.13/1.49  thf(func_def_10, type, setunion: $i > $i).
% 2.13/1.49  thf(func_def_19, type, descr: ($i > $o) > $i).
% 2.13/1.49  thf(func_def_21, type, dsetconstr: $i > ($i > $o) > $i).
% 2.13/1.49  thf(func_def_26, type, prop2set: $o > $i).
% 2.13/1.49  thf(func_def_36, type, nonempty: $i > $o).
% 2.13/1.49  thf(func_def_69, type, set2prop: $i > $o).
% 2.13/1.49  thf(func_def_90, type, sK0: $i > $o).
% 2.13/1.49  thf(func_def_93, type, sK3: ($i > $o) > $i).
% 2.13/1.49  thf(func_def_94, type, sK4: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_95, type, sK5: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_96, type, sK6: $i > $i > $i).
% 2.13/1.49  thf(func_def_97, type, sK7: $i > ($i > $o) > $i).
% 2.13/1.49  thf(func_def_98, type, sK8: $i > ($i > $o) > $i).
% 2.13/1.49  thf(func_def_99, type, sK9: $i > $i > $i).
% 2.13/1.49  thf(func_def_100, type, sK10: $i > $i).
% 2.13/1.49  thf(func_def_101, type, sK11: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_102, type, sK12: $i > $i).
% 2.13/1.49  thf(func_def_104, type, sK13: ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_105, type, sK14: ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_106, type, sK15: $i > ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_107, type, sK16: $i > ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_108, type, sK17: $i > ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_109, type, sK18: $i > ($i > $i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_110, type, sK19: $i > $i).
% 2.13/1.49  thf(func_def_111, type, sK20: $i > ($i > $o) > $i).
% 2.13/1.49  thf(func_def_112, type, sK21: $i > $i).
% 2.13/1.49  thf(func_def_113, type, sK22: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_114, type, sK23: $i > $i > $i).
% 2.13/1.49  thf(func_def_115, type, sK24: $i > $i > $i).
% 2.13/1.49  thf(func_def_116, type, sK25: $i > $i > $i).
% 2.13/1.49  thf(func_def_117, type, sK26: $i > ($i > $o) > $i).
% 2.13/1.49  thf(func_def_118, type, sK27: ($i > $o) > $i).
% 2.13/1.49  thf(func_def_119, type, sK28: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_120, type, sK29: $i > $i).
% 2.13/1.49  thf(func_def_121, type, sK30: $i > $i).
% 2.13/1.49  thf(func_def_122, type, sK31: $o > $i > $i > $i).
% 2.13/1.49  thf(func_def_123, type, sK32: ($i > $o) > $i).
% 2.13/1.49  thf(func_def_124, type, sK33: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_125, type, sK34: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_126, type, sK35: $i > $i).
% 2.13/1.49  thf(func_def_127, type, sK36: $i > $i > $i).
% 2.13/1.49  thf(func_def_128, type, sK37: ($i > $o) > $i).
% 2.13/1.49  thf(func_def_129, type, sK38: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_130, type, sK39: ($i > $o) > $i > $i).
% 2.13/1.49  thf(func_def_131, type, sK40: $i > $i).
% 2.13/1.49  thf(func_def_132, type, sK41: $i > $i > $i).
% 2.13/1.49  thf(func_def_133, type, sK42: $i > $i > $i).
% 2.13/1.49  thf(func_def_134, type, sK43: $i > $i > $i).
% 2.13/1.49  thf(func_def_135, type, sK44: $i > $i > $i > $i).
% 2.13/1.49  thf(f1208,plain,(
% 2.13/1.49    $false),
% 2.13/1.49    inference(subsumption_resolution,[status(thm)],[f1206,f1145])).
% 2.13/1.49  thf(f1145,plain,(
% 2.13/1.49    (sK1 != (sK21 @ sK1))),
% 2.13/1.49    inference(trivial_inequality_removal,[status(thm)],[f1140])).
% 2.13/1.49  thf(f1140,plain,(
% 2.13/1.49    (sK1 != (sK21 @ sK1)) | ($false = $true)),
% 2.13/1.49    inference(superposition,[status(thm)],[f663,f260])).
% 2.13/1.49  thf(f260,plain,(
% 2.13/1.49    ((sK0 @ sK1) = $true)),
% 2.13/1.49    inference(cnf_transformation,[status(thm)],[f195])).
% 2.13/1.49  thf(f195,plain,(
% 2.13/1.49    (setunionI = $true) & (omegaIndAx = $true) & (quantDeMorgan4 = $true) & (setadjoinE = $true) & (notinsingleton = $true) & (nonemptyI1 = $true) & (setunionE = $true) & (vacuousDall = $true) & (emptysetE = $true) & (prop2setE = $true) & (upairsetIL = $true) & (emptyInPowerset = $true) & (setadjoinIL = $true) & (eqinunit = $true) & (notinemptyset = $true) & (wellorderingAx = $true) & (powersetI = $true) & (noeltsimpempty = $true) & (emptyE1 = $true) & (omega0Ax = $true) & (setadjoinAx = $true) & (emptysetimpfalse = $true) & (setadjoinOr = $true) & (((exu @ (^[Y0 : $i]: (sK0 @ Y0))) != $true) & ((sK0 @ sK1) = $true) & ! [X2 : $i,X3 : $i] : (($true != (sK0 @ X3)) | ((sK0 @ X2) != $true) | (X2 = X3))) & (nonemptyImpWitness = $true) & (dsetconstrI = $true) & (prop2set2propI = $true) & (setadjoinIR = $true) & (dsetconstrEL = $true) & (prop2setI = $true) & (quantDeMorgan2 = $true) & (emptyinunitempty = $true) & (foundationAx = $true) & (setoftrueEq = $true) & (powersetAx = $true) & (setext = $true) & (nonemptyI = $true) & (exuE1 = $true) & (upairsetE = $true) & (emptyI = $true) & (exuE2 = $true) & (singletonsswitch = $true) & (setunionAx = $true) & (upairsetIR = $true) & (setextAx = $true) & (emptysetAx = $true) & (exuI1 = $true) & (subPowSU = $true) & (quantDeMorgan3 = $true) & (quantDeMorgan1 = $true) & (powersetE = $true) & (notdexE = $true) & (descrp = $true) & (emptyinPowerset = $true) & (replAx = $true) & (dsetconstrER = $true) & (omegaSAx = $true) & (uniqinunit = $true) & (nonemptyE1 = $true) & (setbeta = $true) & (notdallE = $true) & (exuE3e = $true)),
% 2.13/1.49    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f192,f194,f193])).
% 2.13/1.49  thf(f193,plain,(
% 2.13/1.49    ? [X0 : $i > $o] : (($true != (exu @ (^[Y0 : $i]: (X0 @ Y0)))) & ? [X1 : $i] : ((X0 @ X1) = $true) & ! [X2 : $i,X3 : $i] : (((X0 @ X3) != $true) | ((X0 @ X2) != $true) | (X2 = X3))) => (((exu @ (^[Y0 : $i]: (sK0 @ Y0))) != $true) & ? [X1 : $i] : ((sK0 @ X1) = $true) & ! [X3 : $i,X2 : $i] : (($true != (sK0 @ X3)) | ((sK0 @ X2) != $true) | (X2 = X3)))),
% 2.13/1.49    introduced(definition,[],[choice_axiom])).
% 2.13/1.49  thf(f194,plain,(
% 2.13/1.49    ? [X1 : $i] : ((sK0 @ X1) = $true) => ((sK0 @ sK1) = $true)),
% 2.13/1.49    introduced(definition,[],[choice_axiom])).
% 2.13/1.49  thf(f192,plain,(
% 2.13/1.49    (setunionI = $true) & (omegaIndAx = $true) & (quantDeMorgan4 = $true) & (setadjoinE = $true) & (notinsingleton = $true) & (nonemptyI1 = $true) & (setunionE = $true) & (vacuousDall = $true) & (emptysetE = $true) & (prop2setE = $true) & (upairsetIL = $true) & (emptyInPowerset = $true) & (setadjoinIL = $true) & (eqinunit = $true) & (notinemptyset = $true) & (wellorderingAx = $true) & (powersetI = $true) & (noeltsimpempty = $true) & (emptyE1 = $true) & (omega0Ax = $true) & (setadjoinAx = $true) & (emptysetimpfalse = $true) & (setadjoinOr = $true) & ? [X0 : $i > $o] : (($true != (exu @ (^[Y0 : $i]: (X0 @ Y0)))) & ? [X1 : $i] : ((X0 @ X1) = $true) & ! [X2 : $i,X3 : $i] : (((X0 @ X3) != $true) | ((X0 @ X2) != $true) | (X2 = X3))) & (nonemptyImpWitness = $true) & (dsetconstrI = $true) & (prop2set2propI = $true) & (setadjoinIR = $true) & (dsetconstrEL = $true) & (prop2setI = $true) & (quantDeMorgan2 = $true) & (emptyinunitempty = $true) & (foundationAx = $true) & (setoftrueEq = $true) & (powersetAx = $true) & (setext = $true) & (nonemptyI = $true) & (exuE1 = $true) & (upairsetE = $true) & (emptyI = $true) & (exuE2 = $true) & (singletonsswitch = $true) & (setunionAx = $true) & (upairsetIR = $true) & (setextAx = $true) & (emptysetAx = $true) & (exuI1 = $true) & (subPowSU = $true) & (quantDeMorgan3 = $true) & (quantDeMorgan1 = $true) & (powersetE = $true) & (notdexE = $true) & (descrp = $true) & (emptyinPowerset = $true) & (replAx = $true) & (dsetconstrER = $true) & (omegaSAx = $true) & (uniqinunit = $true) & (nonemptyE1 = $true) & (setbeta = $true) & (notdallE = $true) & (exuE3e = $true)),
% 2.13/1.49    inference(flattening,[status(thm)],[f191])).
% 2.13/1.49  thf(f191,plain,(
% 2.13/1.49    ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((? [X0 : $i > $o] : ((($true != (exu @ (^[Y0 : $i]: (X0 @ Y0)))) & ! [X2 : $i,X3 : $i] : (((X2 = X3) | ((X0 @ X3) != $true)) | ((X0 @ X2) != $true))) & ? [X1 : $i] : ((X0 @ X1) = $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)),
% 2.13/1.49    inference(ennf_transformation,[status(thm)],[f86])).
% 2.13/1.49  thf(f86,plain,(
% 2.13/1.49    ~((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) => ! [X0 : $i > $o] : (? [X1 : $i] : ((X0 @ X1) = $true) => (! [X2 : $i,X3 : $i] : (((X0 @ X2) = $true) => (((X0 @ X3) = $true) => (X2 = X3))) => ($true = (exu @ (^[Y0 : $i]: (X0 @ Y0)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.13/1.49    inference(fool_elimination,[status(thm)],[f85])).
% 2.13/1.49  thf(f85,plain,(
% 2.13/1.49    ~(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 => ! [X0 : $i > $o] : (? [X1 : $i] : (X0 @ X1) => (! [X2 : $i,X3 : $i] : ((X0 @ X2) => ((X0 @ X3) => (X2 = X3))) => (exu @ (^[X4 : $i] : (X0 @ X4))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.13/1.49    inference(rectify,[status(thm)],[f65])).
% 2.13/1.49  thf(f65,negated_conjecture,(
% 2.13/1.49    ~(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 => ! [X0 : $i > $o] : (? [X1 : $i] : (X0 @ X1) => (! [X1 : $i,X2 : $i] : ((X0 @ X1) => ((X0 @ X2) => (X1 = X2))) => (exu @ (^[X1 : $i] : (X0 @ X1))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.13/1.49    inference(negated_conjecture,[status(cth)],[f64])).
% 2.13/1.49  thf(f64,conjecture,(
% 2.13/1.49    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 => ! [X0 : $i > $o] : (? [X1 : $i] : (X0 @ X1) => (! [X1 : $i,X2 : $i] : ((X0 @ X1) => ((X0 @ X2) => (X1 = X2))) => (exu @ (^[X1 : $i] : (X0 @ X1)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),
% 2.13/1.49    file('/export/starexec/sandbox/tmp/tmp.V2DC10xSo5/DTF2THF_32358.p',exuI3)).
% 2.13/1.49  thf(f663,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (($false = (sK0 @ X1)) | ((sK21 @ X1) != X1)) )),
% 2.13/1.49    inference(equality_proxy_clausification,[status(thm)],[f661])).
% 2.13/1.49  thf(f661,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (((X1 = (sK21 @ X1)) = $false) | ($false = (sK0 @ X1))) )),
% 2.13/1.49    inference(binary_proxy_clausification,[status(thm)],[f660])).
% 2.13/1.49  thf(f660,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (($false = ((sK0 @ (sK21 @ X1)) => (X1 = (sK21 @ X1)))) | ($false = (sK0 @ X1))) )),
% 2.13/1.49    inference(beta_eta_normalization,[status(thm)],[f659])).
% 2.13/1.49  thf(f659,plain,(
% 2.13/1.49    ( ! [X1 : $i] : ((((^[Y0 : $i]: ((sK0 @ Y0) => (X1 = Y0))) @ (sK21 @ X1)) = $false) | ($false = (sK0 @ X1))) )),
% 2.13/1.49    inference(sigma_clausification,[status(thm)],[f658])).
% 2.13/1.49  thf(f658,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (($false = (!! @ $i @ (^[Y0 : $i]: ((sK0 @ Y0) => (X1 = Y0))))) | ($false = (sK0 @ X1))) )),
% 2.13/1.49    inference(binary_proxy_clausification,[status(thm)],[f657])).
% 2.13/1.49  thf(f657,plain,(
% 2.13/1.49    ( ! [X1 : $i] : ((((sK0 @ X1) & (!! @ $i @ (^[Y0 : $i]: ((sK0 @ Y0) => (X1 = Y0))))) = $false)) )),
% 2.13/1.49    inference(beta_eta_normalization,[status(thm)],[f656])).
% 2.13/1.49  thf(f656,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (($false = ((^[Y0 : $i]: ((sK0 @ Y0) & (!! @ $i @ (^[Y1 : $i]: ((sK0 @ Y1) => (Y0 = Y1)))))) @ X1))) )),
% 2.13/1.49    inference(pi_clausification,[status(thm)],[f655])).
% 2.13/1.49  thf(f655,plain,(
% 2.13/1.49    ($true != (?? @ $i @ (^[Y0 : $i]: ((sK0 @ Y0) & (!! @ $i @ (^[Y1 : $i]: ((sK0 @ Y1) => (Y0 = Y1))))))))),
% 2.13/1.49    inference(beta_eta_normalization,[status(thm)],[f336])).
% 2.13/1.49  thf(f336,plain,(
% 2.13/1.49    (((^[Y0 : $i > $o]: (?? @ $i @ (^[Y1 : $i]: ((Y0 @ Y1) & (!! @ $i @ (^[Y2 : $i]: ((Y0 @ Y2) => (Y1 = Y2)))))))) @ (^[Y0 : $i]: (sK0 @ Y0))) != $true)),
% 2.13/1.49    inference(definition_unfolding,[status(thm)],[f261,f312])).
% 2.13/1.49  thf(f312,plain,(
% 2.13/1.49    (exu = (^[Y0 : $i > $o]: (?? @ $i @ (^[Y1 : $i]: ((Y0 @ Y1) & (!! @ $i @ (^[Y2 : $i]: ((Y0 @ Y2) => (Y1 = Y2)))))))))),
% 2.13/1.49    inference(cnf_transformation,[status(thm)],[f124])).
% 2.13/1.49  thf(f124,plain,(
% 2.13/1.49    (exu = (^[Y0 : $i > $o]: (?? @ $i @ (^[Y1 : $i]: ((Y0 @ Y1) & (!! @ $i @ (^[Y2 : $i]: ((Y0 @ Y2) => (Y1 = Y2)))))))))),
% 2.13/1.49    inference(fool_elimination,[status(thm)],[f123])).
% 2.13/1.49  thf(f123,plain,(
% 2.13/1.49    (exu = (^[X0 : $i > $o] : (? [X1 : $i] : (! [X2 : $i] : ((X0 @ X2) => (X1 = X2)) & (X0 @ X1)))))),
% 2.13/1.49    inference(rectify,[status(thm)],[f1])).
% 2.13/1.49  thf(f1,axiom,(
% 2.13/1.49    (exu = (^[X0 : $i > $o] : (? [X1 : $i] : (! [X2 : $i] : ((X0 @ X2) => (X1 = X2)) & (X0 @ X1)))))),
% 2.13/1.49    file('/export/starexec/sandbox/tmp/tmp.V2DC10xSo5/DTF2THF_32358.p',exu)).
% 2.13/1.49  thf(f261,plain,(
% 2.13/1.49    ((exu @ (^[Y0 : $i]: (sK0 @ Y0))) != $true)),
% 2.13/1.49    inference(cnf_transformation,[status(thm)],[f195])).
% 2.13/1.49  thf(f1206,plain,(
% 2.13/1.49    (sK1 = (sK21 @ sK1))),
% 2.13/1.49    inference(trivial_inequality_removal,[status(thm)],[f1196])).
% 2.13/1.49  thf(f1196,plain,(
% 2.13/1.49    (sK1 = (sK21 @ sK1)) | ($false = $true)),
% 2.13/1.49    inference(superposition,[status(thm)],[f1194,f260])).
% 2.13/1.49  thf(f1194,plain,(
% 2.13/1.49    ( ! [X0 : $i] : (($false = (sK0 @ X0)) | ((sK21 @ X0) = sK1)) )),
% 2.13/1.49    inference(trivial_inequality_removal,[status(thm)],[f1185])).
% 2.13/1.49  thf(f1185,plain,(
% 2.13/1.49    ( ! [X0 : $i] : (($false = (sK0 @ X0)) | ((sK21 @ X0) = sK1) | ($true != $true)) )),
% 2.13/1.49    inference(superposition,[status(thm)],[f1155,f662])).
% 2.13/1.49  thf(f662,plain,(
% 2.13/1.49    ( ! [X1 : $i] : (((sK0 @ (sK21 @ X1)) = $true) | ($false = (sK0 @ X1))) )),
% 2.13/1.49    inference(binary_proxy_clausification,[status(thm)],[f660])).
% 2.13/1.49  thf(f1155,plain,(
% 2.13/1.49    ( ! [X0 : $i] : (((sK0 @ X0) != $true) | (sK1 = X0)) )),
% 2.13/1.49    inference(trivial_inequality_removal,[status(thm)],[f1152])).
% 2.13/1.49  thf(f1152,plain,(
% 2.13/1.49    ( ! [X0 : $i] : (((sK0 @ X0) != $true) | ($true != $true) | (sK1 = X0)) )),
% 2.13/1.49    inference(superposition,[status(thm)],[f259,f260])).
% 2.13/1.49  thf(f259,plain,(
% 2.13/1.49    ( ! [X2 : $i,X3 : $i] : (($true != (sK0 @ X3)) | ((sK0 @ X2) != $true) | (X2 = X3)) )),
% 2.13/1.49    inference(cnf_transformation,[status(thm)],[f195])).
% 2.13/1.49  % SZS output end Proof for DTF2THF_32358
% 2.13/1.49  % (32549)------------------------------
% 2.13/1.49  % (32549)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 2.13/1.49  % (32549)Termination reason: Refutation
% 2.13/1.49  
% 2.13/1.49  % (32549)Memory used [KB]: 6396
% 2.13/1.49  % (32549)Time elapsed: 0.032 s
% 2.13/1.49  % (32549)Instructions burned: 102 (million)
% 2.13/1.49  % (32549)------------------------------
% 2.13/1.49  % (32549)------------------------------
% 2.13/1.49  % (32548)Success in time 0.048 s
%------------------------------------------------------------------------------