TSTP Solution File: NUM180-1 by Bliksem---1.12

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Bliksem---1.12
% Problem  : NUM180-1 : TPTP v8.1.0. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : bliksem %s

% Computer : n016.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  : 0s
% DateTime : Mon Jul 18 06:20:20 EDT 2022

% Result   : Unsatisfiable 2.81s 3.18s
% Output   : Refutation 2.81s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : NUM180-1 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.07/0.13  % Command  : bliksem %s
% 0.13/0.34  % Computer : n016.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % DateTime : Wed Jul  6 05:56:19 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.75/1.14  *** allocated 10000 integers for termspace/termends
% 0.75/1.14  *** allocated 10000 integers for clauses
% 0.75/1.14  *** allocated 10000 integers for justifications
% 0.75/1.14  Bliksem 1.12
% 0.75/1.14  
% 0.75/1.14  
% 0.75/1.14  Automatic Strategy Selection
% 0.75/1.14  
% 0.75/1.14  Clauses:
% 0.75/1.14  [
% 0.75/1.14     [ ~( subclass( X, Y ) ), ~( member( Z, X ) ), member( Z, Y ) ],
% 0.75/1.14     [ member( 'not_subclass_element'( X, Y ), X ), subclass( X, Y ) ],
% 0.75/1.14     [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), subclass( X, Y ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ subclass( X, 'universal_class' ) ],
% 0.75/1.14     [ ~( =( X, Y ) ), subclass( X, Y ) ],
% 0.75/1.14     [ ~( =( X, Y ) ), subclass( Y, X ) ],
% 0.75/1.14     [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y ) ],
% 0.75/1.14     [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), =( X, Z ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( X, 'unordered_pair'( X, Y
% 0.75/1.14     ) ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( X, 'unordered_pair'( Y, X
% 0.75/1.14     ) ) ],
% 0.75/1.14     [ member( 'unordered_pair'( X, Y ), 'universal_class' ) ],
% 0.75/1.14     [ =( 'unordered_pair'( X, X ), singleton( X ) ) ],
% 0.75/1.14     [ =( 'unordered_pair'( singleton( X ), 'unordered_pair'( X, singleton( Y
% 0.75/1.14     ) ) ), 'ordered_pair'( X, Y ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T ) ) ), member( 
% 0.75/1.14    X, Z ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T ) ) ), member( 
% 0.75/1.14    Y, T ) ],
% 0.75/1.14     [ ~( member( X, Y ) ), ~( member( Z, T ) ), member( 'ordered_pair'( X, Z
% 0.75/1.14     ), 'cross_product'( Y, T ) ) ],
% 0.75/1.14     [ ~( member( X, 'cross_product'( Y, Z ) ) ), =( 'ordered_pair'( first( X
% 0.75/1.14     ), second( X ) ), X ) ],
% 0.75/1.14     [ subclass( 'element_relation', 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'element_relation' ) ), member( X, 
% 0.75/1.14    Y ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 'universal_class'
% 0.75/1.14    , 'universal_class' ) ) ), ~( member( X, Y ) ), member( 'ordered_pair'( X
% 0.75/1.14    , Y ), 'element_relation' ) ],
% 0.75/1.14     [ ~( member( X, intersection( Y, Z ) ) ), member( X, Y ) ],
% 0.75/1.14     [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ],
% 0.75/1.14     [ ~( member( X, Y ) ), ~( member( X, Z ) ), member( X, intersection( Y, 
% 0.75/1.14    Z ) ) ],
% 0.75/1.14     [ ~( member( X, complement( Y ) ) ), ~( member( X, Y ) ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( X, complement( Y ) ), 
% 0.75/1.14    member( X, Y ) ],
% 0.75/1.14     [ =( complement( intersection( complement( X ), complement( Y ) ) ), 
% 0.75/1.14    union( X, Y ) ) ],
% 0.75/1.14     [ =( intersection( complement( intersection( X, Y ) ), complement( 
% 0.75/1.14    intersection( complement( X ), complement( Y ) ) ) ), 
% 0.75/1.14    'symmetric_difference'( X, Y ) ) ],
% 0.75/1.14     [ =( intersection( X, 'cross_product'( Y, Z ) ), restrict( X, Y, Z ) ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ =( intersection( 'cross_product'( X, Y ), Z ), restrict( Z, X, Y ) ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( =( restrict( X, singleton( Y ), 'universal_class' ), 'null_class' )
% 0.75/1.14     ), ~( member( Y, 'domain_of'( X ) ) ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), =( restrict( Y, singleton( X ), 
% 0.75/1.14    'universal_class' ), 'null_class' ), member( X, 'domain_of'( Y ) ) ],
% 0.75/1.14     [ subclass( rotate( X ), 'cross_product'( 'cross_product'( 
% 0.75/1.14    'universal_class', 'universal_class' ), 'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), rotate( T ) )
% 0.75/1.14     ), member( 'ordered_pair'( 'ordered_pair'( Y, Z ), X ), T ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), T ) ), ~( 
% 0.75/1.14    member( 'ordered_pair'( 'ordered_pair'( Z, X ), Y ), 'cross_product'( 
% 0.75/1.14    'cross_product'( 'universal_class', 'universal_class' ), 
% 0.75/1.14    'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Z, X ), 
% 0.75/1.14    Y ), rotate( T ) ) ],
% 0.75/1.14     [ subclass( flip( X ), 'cross_product'( 'cross_product'( 
% 0.75/1.14    'universal_class', 'universal_class' ), 'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), flip( T ) ) )
% 0.75/1.14    , member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), T ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), T ) ), ~( 
% 0.75/1.14    member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), 'cross_product'( 
% 0.75/1.14    'cross_product'( 'universal_class', 'universal_class' ), 
% 0.75/1.14    'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X ), 
% 0.75/1.14    Z ), flip( T ) ) ],
% 0.75/1.14     [ =( 'domain_of'( flip( 'cross_product'( X, 'universal_class' ) ) ), 
% 0.75/1.14    inverse( X ) ) ],
% 0.75/1.14     [ =( 'domain_of'( inverse( X ) ), 'range_of'( X ) ) ],
% 0.75/1.14     [ =( first( 'not_subclass_element'( restrict( X, Y, singleton( Z ) ), 
% 0.75/1.14    'null_class' ) ), domain( X, Y, Z ) ) ],
% 0.75/1.14     [ =( second( 'not_subclass_element'( restrict( X, singleton( Y ), Z ), 
% 0.75/1.14    'null_class' ) ), range( X, Y, Z ) ) ],
% 0.75/1.14     [ =( 'range_of'( restrict( X, Y, 'universal_class' ) ), image( X, Y ) )
% 0.75/1.14     ],
% 0.75/1.14     [ =( union( X, singleton( X ) ), successor( X ) ) ],
% 0.75/1.14     [ subclass( 'successor_relation', 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'successor_relation' ) ), =( 
% 0.75/1.14    successor( X ), Y ) ],
% 0.75/1.14     [ ~( =( successor( X ), Y ) ), ~( member( 'ordered_pair'( X, Y ), 
% 0.75/1.14    'cross_product'( 'universal_class', 'universal_class' ) ) ), member( 
% 0.75/1.14    'ordered_pair'( X, Y ), 'successor_relation' ) ],
% 0.75/1.14     [ ~( inductive( X ) ), member( 'null_class', X ) ],
% 0.75/1.14     [ ~( inductive( X ) ), subclass( image( 'successor_relation', X ), X ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( member( 'null_class', X ) ), ~( subclass( image( 
% 0.75/1.14    'successor_relation', X ), X ) ), inductive( X ) ],
% 0.75/1.14     [ inductive( omega ) ],
% 0.75/1.14     [ ~( inductive( X ) ), subclass( omega, X ) ],
% 0.75/1.14     [ member( omega, 'universal_class' ) ],
% 0.75/1.14     [ =( 'domain_of'( restrict( 'element_relation', 'universal_class', X ) )
% 0.75/1.14    , 'sum_class'( X ) ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( 'sum_class'( X ), 
% 0.75/1.14    'universal_class' ) ],
% 0.75/1.14     [ =( complement( image( 'element_relation', complement( X ) ) ), 
% 0.75/1.14    'power_class'( X ) ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( 'power_class'( X ), 
% 0.75/1.14    'universal_class' ) ],
% 0.75/1.14     [ subclass( compose( X, Y ), 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), compose( Z, T ) ) ), member( Y, 
% 0.75/1.14    image( Z, image( T, singleton( X ) ) ) ) ],
% 0.75/1.14     [ ~( member( X, image( Y, image( Z, singleton( T ) ) ) ) ), ~( member( 
% 0.75/1.14    'ordered_pair'( T, X ), 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ), member( 'ordered_pair'( T, X ), compose( Y, Z )
% 0.75/1.14     ) ],
% 0.75/1.14     [ ~( 'single_valued_class'( X ) ), subclass( compose( X, inverse( X ) )
% 0.75/1.14    , 'identity_relation' ) ],
% 0.75/1.14     [ ~( subclass( compose( X, inverse( X ) ), 'identity_relation' ) ), 
% 0.75/1.14    'single_valued_class'( X ) ],
% 0.75/1.14     [ ~( function( X ) ), subclass( X, 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( function( X ) ), subclass( compose( X, inverse( X ) ), 
% 0.75/1.14    'identity_relation' ) ],
% 0.75/1.14     [ ~( subclass( X, 'cross_product'( 'universal_class', 'universal_class'
% 0.75/1.14     ) ) ), ~( subclass( compose( X, inverse( X ) ), 'identity_relation' ) )
% 0.75/1.14    , function( X ) ],
% 0.75/1.14     [ ~( function( X ) ), ~( member( Y, 'universal_class' ) ), member( image( 
% 0.75/1.14    X, Y ), 'universal_class' ) ],
% 0.75/1.14     [ =( X, 'null_class' ), member( regular( X ), X ) ],
% 0.75/1.14     [ =( X, 'null_class' ), =( intersection( X, regular( X ) ), 'null_class'
% 0.75/1.14     ) ],
% 0.75/1.14     [ =( 'sum_class'( image( X, singleton( Y ) ) ), apply( X, Y ) ) ],
% 0.75/1.14     [ function( choice ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), =( X, 'null_class' ), member( 
% 0.75/1.14    apply( choice, X ), X ) ],
% 0.75/1.14     [ ~( 'one_to_one'( X ) ), function( X ) ],
% 0.75/1.14     [ ~( 'one_to_one'( X ) ), function( inverse( X ) ) ],
% 0.75/1.14     [ ~( function( inverse( X ) ) ), ~( function( X ) ), 'one_to_one'( X ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ =( intersection( 'cross_product'( 'universal_class', 'universal_class'
% 0.75/1.14     ), intersection( 'cross_product'( 'universal_class', 'universal_class' )
% 0.75/1.14    , complement( compose( complement( 'element_relation' ), inverse( 
% 0.75/1.14    'element_relation' ) ) ) ) ), 'subset_relation' ) ],
% 0.75/1.14     [ =( intersection( inverse( 'subset_relation' ), 'subset_relation' ), 
% 0.75/1.14    'identity_relation' ) ],
% 0.75/1.14     [ =( complement( 'domain_of'( intersection( X, 'identity_relation' ) ) )
% 0.75/1.14    , diagonalise( X ) ) ],
% 0.75/1.14     [ =( intersection( 'domain_of'( X ), diagonalise( compose( inverse( 
% 0.75/1.14    'element_relation' ), X ) ) ), cantor( X ) ) ],
% 0.75/1.14     [ ~( operation( X ) ), function( X ) ],
% 0.75/1.14     [ ~( operation( X ) ), =( 'cross_product'( 'domain_of'( 'domain_of'( X )
% 0.75/1.14     ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) ) ],
% 0.75/1.14     [ ~( operation( X ) ), subclass( 'range_of'( X ), 'domain_of'( 
% 0.75/1.14    'domain_of'( X ) ) ) ],
% 0.75/1.14     [ ~( function( X ) ), ~( =( 'cross_product'( 'domain_of'( 'domain_of'( X
% 0.75/1.14     ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) ) ), ~( 
% 0.75/1.14    subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( X ) ) ) ), operation( 
% 0.75/1.14    X ) ],
% 0.75/1.14     [ ~( compatible( X, Y, Z ) ), function( X ) ],
% 0.75/1.14     [ ~( compatible( X, Y, Z ) ), =( 'domain_of'( 'domain_of'( Y ) ), 
% 0.75/1.14    'domain_of'( X ) ) ],
% 0.75/1.14     [ ~( compatible( X, Y, Z ) ), subclass( 'range_of'( X ), 'domain_of'( 
% 0.75/1.14    'domain_of'( Z ) ) ) ],
% 0.75/1.14     [ ~( function( X ) ), ~( =( 'domain_of'( 'domain_of'( Y ) ), 'domain_of'( 
% 0.75/1.14    X ) ) ), ~( subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( Z ) ) )
% 0.75/1.14     ), compatible( X, Y, Z ) ],
% 0.75/1.14     [ ~( homomorphism( X, Y, Z ) ), operation( Y ) ],
% 0.75/1.14     [ ~( homomorphism( X, Y, Z ) ), operation( Z ) ],
% 0.75/1.14     [ ~( homomorphism( X, Y, Z ) ), compatible( X, Y, Z ) ],
% 0.75/1.14     [ ~( homomorphism( X, Y, Z ) ), ~( member( 'ordered_pair'( T, U ), 
% 0.75/1.14    'domain_of'( Y ) ) ), =( apply( Z, 'ordered_pair'( apply( X, T ), apply( 
% 0.75/1.14    X, U ) ) ), apply( X, apply( Y, 'ordered_pair'( T, U ) ) ) ) ],
% 0.75/1.14     [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( Z, X, Y ) ), 
% 0.75/1.14    member( 'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 
% 0.75/1.14    'not_homomorphism2'( Z, X, Y ) ), 'domain_of'( X ) ), homomorphism( Z, X
% 0.75/1.14    , Y ) ],
% 0.75/1.14     [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( Z, X, Y ) ), 
% 0.75/1.14    ~( =( apply( Y, 'ordered_pair'( apply( Z, 'not_homomorphism1'( Z, X, Y )
% 0.75/1.14     ), apply( Z, 'not_homomorphism2'( Z, X, Y ) ) ) ), apply( Z, apply( X, 
% 0.75/1.14    'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 'not_homomorphism2'( Z, X
% 0.75/1.14    , Y ) ) ) ) ) ), homomorphism( Z, X, Y ) ],
% 0.75/1.14     [ subclass( 'compose_class'( X ), 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'compose_class'( Z ) ) ), =( 
% 0.75/1.14    compose( Z, X ), Y ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 'universal_class'
% 0.75/1.14    , 'universal_class' ) ) ), ~( =( compose( Z, X ), Y ) ), member( 
% 0.75/1.14    'ordered_pair'( X, Y ), 'compose_class'( Z ) ) ],
% 0.75/1.14     [ subclass( 'composition_function', 'cross_product'( 'universal_class', 
% 0.75/1.14    'cross_product'( 'universal_class', 'universal_class' ) ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 0.75/1.14    'composition_function' ) ), =( compose( X, Y ), Z ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 'universal_class'
% 0.75/1.14    , 'universal_class' ) ) ), member( 'ordered_pair'( X, 'ordered_pair'( Y, 
% 0.75/1.14    compose( X, Y ) ) ), 'composition_function' ) ],
% 0.75/1.14     [ subclass( 'domain_relation', 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'domain_relation' ) ), =( 
% 0.75/1.14    'domain_of'( X ), Y ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( 'ordered_pair'( X, 
% 0.75/1.14    'domain_of'( X ) ), 'domain_relation' ) ],
% 0.75/1.14     [ =( first( 'not_subclass_element'( compose( X, inverse( X ) ), 
% 0.75/1.14    'identity_relation' ) ), 'single_valued1'( X ) ) ],
% 0.75/1.14     [ =( second( 'not_subclass_element'( compose( X, inverse( X ) ), 
% 0.75/1.14    'identity_relation' ) ), 'single_valued2'( X ) ) ],
% 0.75/1.14     [ =( domain( X, image( inverse( X ), singleton( 'single_valued1'( X ) )
% 0.75/1.14     ), 'single_valued2'( X ) ), 'single_valued3'( X ) ) ],
% 0.75/1.14     [ =( intersection( complement( compose( 'element_relation', complement( 
% 0.75/1.14    'identity_relation' ) ) ), 'element_relation' ), 'singleton_relation' ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ subclass( 'application_function', 'cross_product'( 'universal_class', 
% 0.75/1.14    'cross_product'( 'universal_class', 'universal_class' ) ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 0.75/1.14    'application_function' ) ), member( Y, 'domain_of'( X ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 0.75/1.14    'application_function' ) ), =( apply( X, Y ), Z ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 0.75/1.14    'cross_product'( 'universal_class', 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ) ), ~( member( Y, 'domain_of'( X ) ) ), member( 
% 0.75/1.14    'ordered_pair'( X, 'ordered_pair'( Y, apply( X, Y ) ) ), 
% 0.75/1.14    'application_function' ) ],
% 0.75/1.14     [ ~( maps( X, Y, Z ) ), function( X ) ],
% 0.75/1.14     [ ~( maps( X, Y, Z ) ), =( 'domain_of'( X ), Y ) ],
% 0.75/1.14     [ ~( maps( X, Y, Z ) ), subclass( 'range_of'( X ), Z ) ],
% 0.75/1.14     [ ~( function( X ) ), ~( subclass( 'range_of'( X ), Y ) ), maps( X, 
% 0.75/1.14    'domain_of'( X ), Y ) ],
% 0.75/1.14     [ =( union( X, inverse( X ) ), 'symmetrization_of'( X ) ) ],
% 0.75/1.14     [ ~( irreflexive( X, Y ) ), subclass( restrict( X, Y, Y ), complement( 
% 0.75/1.14    'identity_relation' ) ) ],
% 0.75/1.14     [ ~( subclass( restrict( X, Y, Y ), complement( 'identity_relation' ) )
% 0.75/1.14     ), irreflexive( X, Y ) ],
% 0.75/1.14     [ ~( connected( X, Y ) ), subclass( 'cross_product'( Y, Y ), union( 
% 0.75/1.14    'identity_relation', 'symmetrization_of'( X ) ) ) ],
% 0.75/1.14     [ ~( subclass( 'cross_product'( X, X ), union( 'identity_relation', 
% 0.75/1.14    'symmetrization_of'( Y ) ) ) ), connected( Y, X ) ],
% 0.75/1.14     [ ~( transitive( X, Y ) ), subclass( compose( restrict( X, Y, Y ), 
% 0.75/1.14    restrict( X, Y, Y ) ), restrict( X, Y, Y ) ) ],
% 0.75/1.14     [ ~( subclass( compose( restrict( X, Y, Y ), restrict( X, Y, Y ) ), 
% 0.75/1.14    restrict( X, Y, Y ) ) ), transitive( X, Y ) ],
% 0.75/1.14     [ ~( asymmetric( X, Y ) ), =( restrict( intersection( X, inverse( X ) )
% 0.75/1.14    , Y, Y ), 'null_class' ) ],
% 0.75/1.14     [ ~( =( restrict( intersection( X, inverse( X ) ), Y, Y ), 'null_class'
% 0.75/1.14     ) ), asymmetric( X, Y ) ],
% 0.75/1.14     [ =( segment( X, Y, Z ), 'domain_of'( restrict( X, Y, singleton( Z ) ) )
% 0.75/1.14     ) ],
% 0.75/1.14     [ ~( 'well_ordering'( X, Y ) ), connected( X, Y ) ],
% 0.75/1.14     [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), =( Z, 
% 0.75/1.14    'null_class' ), member( least( X, Z ), Z ) ],
% 0.75/1.14     [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), ~( member( T, Z )
% 0.75/1.14     ), member( least( X, Z ), Z ) ],
% 0.75/1.14     [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), =( segment( X, Z
% 0.75/1.14    , least( X, Z ) ), 'null_class' ) ],
% 0.75/1.14     [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), ~( member( T, Z )
% 0.75/1.14     ), ~( member( 'ordered_pair'( T, least( X, Z ) ), X ) ) ],
% 0.75/1.14     [ ~( connected( X, Y ) ), ~( =( 'not_well_ordering'( X, Y ), 
% 0.75/1.14    'null_class' ) ), 'well_ordering'( X, Y ) ],
% 0.75/1.14     [ ~( connected( X, Y ) ), subclass( 'not_well_ordering'( X, Y ), Y ), 
% 0.75/1.14    'well_ordering'( X, Y ) ],
% 0.75/1.14     [ ~( member( X, 'not_well_ordering'( Y, Z ) ) ), ~( =( segment( Y, 
% 0.75/1.14    'not_well_ordering'( Y, Z ), X ), 'null_class' ) ), ~( connected( Y, Z )
% 0.75/1.14     ), 'well_ordering'( Y, Z ) ],
% 0.75/1.14     [ ~( section( X, Y, Z ) ), subclass( Y, Z ) ],
% 0.75/1.14     [ ~( section( X, Y, Z ) ), subclass( 'domain_of'( restrict( X, Z, Y ) )
% 0.75/1.14    , Y ) ],
% 0.75/1.14     [ ~( subclass( X, Y ) ), ~( subclass( 'domain_of'( restrict( Z, Y, X ) )
% 0.75/1.14    , X ) ), section( Z, X, Y ) ],
% 0.75/1.14     [ ~( member( X, 'ordinal_numbers' ) ), 'well_ordering'( 
% 0.75/1.14    'element_relation', X ) ],
% 0.75/1.14     [ ~( member( X, 'ordinal_numbers' ) ), subclass( 'sum_class'( X ), X ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( 'well_ordering'( 'element_relation', X ) ), ~( subclass( 
% 0.75/1.14    'sum_class'( X ), X ) ), ~( member( X, 'universal_class' ) ), member( X, 
% 0.75/1.14    'ordinal_numbers' ) ],
% 0.75/1.14     [ ~( 'well_ordering'( 'element_relation', X ) ), ~( subclass( 
% 0.75/1.14    'sum_class'( X ), X ) ), member( X, 'ordinal_numbers' ), =( X, 
% 0.75/1.14    'ordinal_numbers' ) ],
% 0.75/1.14     [ =( union( singleton( 'null_class' ), image( 'successor_relation', 
% 0.75/1.14    'ordinal_numbers' ) ), 'kind_1_ordinals' ) ],
% 0.75/1.14     [ =( intersection( complement( 'kind_1_ordinals' ), 'ordinal_numbers' )
% 0.75/1.14    , 'limit_ordinals' ) ],
% 0.75/1.14     [ subclass( 'rest_of'( X ), 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'rest_of'( Z ) ) ), member( X, 
% 0.75/1.14    'domain_of'( Z ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'rest_of'( Z ) ) ), =( restrict( Z
% 0.75/1.14    , X, 'universal_class' ), Y ) ],
% 0.75/1.14     [ ~( member( X, 'domain_of'( Y ) ) ), ~( =( restrict( Y, X, 
% 0.75/1.14    'universal_class' ), Z ) ), member( 'ordered_pair'( X, Z ), 'rest_of'( Y
% 0.75/1.14     ) ) ],
% 0.75/1.14     [ subclass( 'rest_relation', 'cross_product'( 'universal_class', 
% 0.75/1.14    'universal_class' ) ) ],
% 0.75/1.14     [ ~( member( 'ordered_pair'( X, Y ), 'rest_relation' ) ), =( 'rest_of'( 
% 0.75/1.14    X ), Y ) ],
% 0.75/1.14     [ ~( member( X, 'universal_class' ) ), member( 'ordered_pair'( X, 
% 0.75/1.14    'rest_of'( X ) ), 'rest_relation' ) ],
% 0.75/1.14     [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), function( Y ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), function( X ) ]
% 0.75/1.14    ,
% 0.75/1.14     [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), member( 
% 1.51/1.92    'domain_of'( X ), 'ordinal_numbers' ) ],
% 1.51/1.92     [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), =( compose( Y, 
% 1.51/1.92    'rest_of'( X ) ), X ) ],
% 1.51/1.92     [ ~( function( X ) ), ~( function( Y ) ), ~( member( 'domain_of'( Y ), 
% 1.51/1.92    'ordinal_numbers' ) ), ~( =( compose( X, 'rest_of'( Y ) ), Y ) ), member( 
% 1.51/1.92    Y, 'recursion_equation_functions'( X ) ) ],
% 1.51/1.92     [ subclass( 'union_of_range_map', 'cross_product'( 'universal_class', 
% 1.51/1.92    'universal_class' ) ) ],
% 1.51/1.92     [ ~( member( 'ordered_pair'( X, Y ), 'union_of_range_map' ) ), =( 
% 1.51/1.92    'sum_class'( 'range_of'( X ) ), Y ) ],
% 1.51/1.92     [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 'universal_class'
% 1.51/1.92    , 'universal_class' ) ) ), ~( =( 'sum_class'( 'range_of'( X ) ), Y ) ), 
% 1.51/1.92    member( 'ordered_pair'( X, Y ), 'union_of_range_map' ) ],
% 1.51/1.92     [ =( apply( recursion( X, 'successor_relation', 'union_of_range_map' ), 
% 1.51/1.92    Y ), 'ordinal_add'( X, Y ) ) ],
% 1.51/1.92     [ =( recursion( 'null_class', apply( 'add_relation', X ), 
% 1.51/1.92    'union_of_range_map' ), 'ordinal_multiply'( X, Y ) ) ],
% 1.51/1.92     [ ~( member( X, omega ) ), =( 'integer_of'( X ), X ) ],
% 1.51/1.92     [ member( X, omega ), =( 'integer_of'( X ), 'null_class' ) ],
% 1.51/1.92     [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ]
% 1.51/1.92  ] .
% 1.51/1.92  
% 1.51/1.92  
% 1.51/1.92  percentage equality = 0.219814, percentage horn = 0.924528
% 1.51/1.92  This is a problem with some equality
% 1.51/1.92  
% 1.51/1.92  
% 1.51/1.92  
% 1.51/1.92  Options Used:
% 1.51/1.92  
% 1.51/1.92  useres =            1
% 1.51/1.92  useparamod =        1
% 1.51/1.92  useeqrefl =         1
% 1.51/1.92  useeqfact =         1
% 1.51/1.92  usefactor =         1
% 1.51/1.92  usesimpsplitting =  0
% 1.51/1.92  usesimpdemod =      5
% 1.51/1.92  usesimpres =        3
% 1.51/1.92  
% 1.51/1.92  resimpinuse      =  1000
% 1.51/1.92  resimpclauses =     20000
% 1.51/1.92  substype =          eqrewr
% 1.51/1.92  backwardsubs =      1
% 1.51/1.92  selectoldest =      5
% 1.51/1.92  
% 1.51/1.92  litorderings [0] =  split
% 1.51/1.92  litorderings [1] =  extend the termordering, first sorting on arguments
% 1.51/1.92  
% 1.51/1.92  termordering =      kbo
% 1.51/1.92  
% 1.51/1.92  litapriori =        0
% 1.51/1.92  termapriori =       1
% 1.51/1.92  litaposteriori =    0
% 1.51/1.92  termaposteriori =   0
% 1.51/1.92  demodaposteriori =  0
% 1.51/1.92  ordereqreflfact =   0
% 1.51/1.92  
% 1.51/1.92  litselect =         negord
% 1.51/1.92  
% 1.51/1.92  maxweight =         15
% 1.51/1.92  maxdepth =          30000
% 1.51/1.92  maxlength =         115
% 1.51/1.92  maxnrvars =         195
% 1.51/1.92  excuselevel =       1
% 1.51/1.92  increasemaxweight = 1
% 1.51/1.92  
% 1.51/1.92  maxselected =       10000000
% 1.51/1.92  maxnrclauses =      10000000
% 1.51/1.92  
% 1.51/1.92  showgenerated =    0
% 1.51/1.92  showkept =         0
% 1.51/1.92  showselected =     0
% 1.51/1.92  showdeleted =      0
% 1.51/1.92  showresimp =       1
% 1.51/1.92  showstatus =       2000
% 1.51/1.92  
% 1.51/1.92  prologoutput =     1
% 1.51/1.92  nrgoals =          5000000
% 1.51/1.92  totalproof =       1
% 1.51/1.92  
% 1.51/1.92  Symbols occurring in the translation:
% 1.51/1.92  
% 1.51/1.92  {}  [0, 0]      (w:1, o:2, a:1, s:1, b:0), 
% 1.51/1.92  .  [1, 2]      (w:1, o:72, a:1, s:1, b:0), 
% 1.51/1.92  !  [4, 1]      (w:0, o:39, a:1, s:1, b:0), 
% 1.51/1.92  =  [13, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 1.51/1.92  ==>  [14, 2]      (w:1, o:0, a:0, s:1, b:0), 
% 1.51/1.92  subclass  [41, 2]      (w:1, o:97, a:1, s:1, b:0), 
% 1.51/1.92  member  [43, 2]      (w:1, o:99, a:1, s:1, b:0), 
% 1.51/1.92  'not_subclass_element'  [44, 2]      (w:1, o:100, a:1, s:1, b:0), 
% 1.51/1.92  'universal_class'  [45, 0]      (w:1, o:24, a:1, s:1, b:0), 
% 1.51/1.92  'unordered_pair'  [46, 2]      (w:1, o:102, a:1, s:1, b:0), 
% 1.51/1.92  singleton  [47, 1]      (w:1, o:49, a:1, s:1, b:0), 
% 1.51/1.92  'ordered_pair'  [48, 2]      (w:1, o:104, a:1, s:1, b:0), 
% 1.51/1.92  'cross_product'  [50, 2]      (w:1, o:105, a:1, s:1, b:0), 
% 1.51/1.92  first  [52, 1]      (w:1, o:50, a:1, s:1, b:0), 
% 1.51/1.92  second  [53, 1]      (w:1, o:51, a:1, s:1, b:0), 
% 1.51/1.92  'element_relation'  [54, 0]      (w:1, o:29, a:1, s:1, b:0), 
% 1.51/1.92  intersection  [55, 2]      (w:1, o:107, a:1, s:1, b:0), 
% 1.51/1.92  complement  [56, 1]      (w:1, o:52, a:1, s:1, b:0), 
% 1.51/1.92  union  [57, 2]      (w:1, o:108, a:1, s:1, b:0), 
% 1.51/1.92  'symmetric_difference'  [58, 2]      (w:1, o:109, a:1, s:1, b:0), 
% 1.51/1.92  restrict  [60, 3]      (w:1, o:118, a:1, s:1, b:0), 
% 1.51/1.92  'null_class'  [61, 0]      (w:1, o:30, a:1, s:1, b:0), 
% 1.51/1.92  'domain_of'  [62, 1]      (w:1, o:55, a:1, s:1, b:0), 
% 1.51/1.92  rotate  [63, 1]      (w:1, o:44, a:1, s:1, b:0), 
% 1.51/1.92  flip  [65, 1]      (w:1, o:56, a:1, s:1, b:0), 
% 1.51/1.92  inverse  [66, 1]      (w:1, o:57, a:1, s:1, b:0), 
% 1.51/1.92  'range_of'  [67, 1]      (w:1, o:45, a:1, s:1, b:0), 
% 1.51/1.92  domain  [68, 3]      (w:1, o:120, a:1, s:1, b:0), 
% 1.51/1.92  range  [69, 3]      (w:1, o:121, a:1, s:1, b:0), 
% 1.51/1.92  image  [70, 2]      (w:1, o:106, a:1, s:1, b:0), 
% 1.51/1.92  successor  [71, 1]      (w:1, o:58, a:1, s:1, b:0), 
% 1.51/1.92  'successor_relation'  [72, 0]      (w:1, o:7, a:1, s:1, b:0), 
% 1.51/1.92  inductive  [73, 1]      (w:1, o:59, a:1, s:1, b:0), 
% 2.81/3.18  omega  [74, 0]      (w:1, o:11, a:1, s:1, b:0), 
% 2.81/3.18  'sum_class'  [75, 1]      (w:1, o:60, a:1, s:1, b:0), 
% 2.81/3.18  'power_class'  [76, 1]      (w:1, o:63, a:1, s:1, b:0), 
% 2.81/3.18  compose  [78, 2]      (w:1, o:110, a:1, s:1, b:0), 
% 2.81/3.18  'single_valued_class'  [79, 1]      (w:1, o:64, a:1, s:1, b:0), 
% 2.81/3.18  'identity_relation'  [80, 0]      (w:1, o:31, a:1, s:1, b:0), 
% 2.81/3.18  function  [82, 1]      (w:1, o:65, a:1, s:1, b:0), 
% 2.81/3.18  regular  [83, 1]      (w:1, o:46, a:1, s:1, b:0), 
% 2.81/3.18  apply  [84, 2]      (w:1, o:111, a:1, s:1, b:0), 
% 2.81/3.18  choice  [85, 0]      (w:1, o:32, a:1, s:1, b:0), 
% 2.81/3.18  'one_to_one'  [86, 1]      (w:1, o:61, a:1, s:1, b:0), 
% 2.81/3.18  'subset_relation'  [87, 0]      (w:1, o:6, a:1, s:1, b:0), 
% 2.81/3.18  diagonalise  [88, 1]      (w:1, o:66, a:1, s:1, b:0), 
% 2.81/3.18  cantor  [89, 1]      (w:1, o:53, a:1, s:1, b:0), 
% 2.81/3.18  operation  [90, 1]      (w:1, o:62, a:1, s:1, b:0), 
% 2.81/3.18  compatible  [94, 3]      (w:1, o:119, a:1, s:1, b:0), 
% 2.81/3.18  homomorphism  [95, 3]      (w:1, o:122, a:1, s:1, b:0), 
% 2.81/3.18  'not_homomorphism1'  [96, 3]      (w:1, o:124, a:1, s:1, b:0), 
% 2.81/3.18  'not_homomorphism2'  [97, 3]      (w:1, o:125, a:1, s:1, b:0), 
% 2.81/3.18  'compose_class'  [98, 1]      (w:1, o:54, a:1, s:1, b:0), 
% 2.81/3.18  'composition_function'  [99, 0]      (w:1, o:33, a:1, s:1, b:0), 
% 2.81/3.18  'domain_relation'  [100, 0]      (w:1, o:28, a:1, s:1, b:0), 
% 2.81/3.18  'single_valued1'  [101, 1]      (w:1, o:67, a:1, s:1, b:0), 
% 2.81/3.18  'single_valued2'  [102, 1]      (w:1, o:68, a:1, s:1, b:0), 
% 2.81/3.18  'single_valued3'  [103, 1]      (w:1, o:69, a:1, s:1, b:0), 
% 2.81/3.18  'singleton_relation'  [104, 0]      (w:1, o:8, a:1, s:1, b:0), 
% 2.81/3.18  'application_function'  [105, 0]      (w:1, o:34, a:1, s:1, b:0), 
% 2.81/3.18  maps  [106, 3]      (w:1, o:123, a:1, s:1, b:0), 
% 2.81/3.18  'symmetrization_of'  [107, 1]      (w:1, o:70, a:1, s:1, b:0), 
% 2.81/3.18  irreflexive  [108, 2]      (w:1, o:112, a:1, s:1, b:0), 
% 2.81/3.18  connected  [109, 2]      (w:1, o:113, a:1, s:1, b:0), 
% 2.81/3.18  transitive  [110, 2]      (w:1, o:101, a:1, s:1, b:0), 
% 2.81/3.18  asymmetric  [111, 2]      (w:1, o:114, a:1, s:1, b:0), 
% 2.81/3.18  segment  [112, 3]      (w:1, o:127, a:1, s:1, b:0), 
% 2.81/3.18  'well_ordering'  [113, 2]      (w:1, o:115, a:1, s:1, b:0), 
% 2.81/3.18  least  [114, 2]      (w:1, o:98, a:1, s:1, b:0), 
% 2.81/3.18  'not_well_ordering'  [115, 2]      (w:1, o:103, a:1, s:1, b:0), 
% 2.81/3.18  section  [116, 3]      (w:1, o:128, a:1, s:1, b:0), 
% 2.81/3.18  'ordinal_numbers'  [117, 0]      (w:1, o:12, a:1, s:1, b:0), 
% 2.81/3.18  'kind_1_ordinals'  [118, 0]      (w:1, o:35, a:1, s:1, b:0), 
% 2.81/3.18  'limit_ordinals'  [119, 0]      (w:1, o:36, a:1, s:1, b:0), 
% 2.81/3.18  'rest_of'  [120, 1]      (w:1, o:47, a:1, s:1, b:0), 
% 2.81/3.18  'rest_relation'  [121, 0]      (w:1, o:5, a:1, s:1, b:0), 
% 2.81/3.18  'recursion_equation_functions'  [122, 1]      (w:1, o:48, a:1, s:1, b:0), 
% 2.81/3.18  'union_of_range_map'  [123, 0]      (w:1, o:37, a:1, s:1, b:0), 
% 2.81/3.18  recursion  [124, 3]      (w:1, o:126, a:1, s:1, b:0), 
% 2.81/3.18  'ordinal_add'  [125, 2]      (w:1, o:116, a:1, s:1, b:0), 
% 2.81/3.18  'add_relation'  [126, 0]      (w:1, o:38, a:1, s:1, b:0), 
% 2.81/3.18  'ordinal_multiply'  [127, 2]      (w:1, o:117, a:1, s:1, b:0), 
% 2.81/3.18  'integer_of'  [128, 1]      (w:1, o:71, a:1, s:1, b:0).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Starting Search:
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    4524
% 2.81/3.18  Kept:         2005
% 2.81/3.18  Inuse:        111
% 2.81/3.18  Deleted:      3
% 2.81/3.18  Deletedinuse: 2
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    9260
% 2.81/3.18  Kept:         4128
% 2.81/3.18  Inuse:        192
% 2.81/3.18  Deleted:      14
% 2.81/3.18  Deletedinuse: 5
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    13237
% 2.81/3.18  Kept:         6138
% 2.81/3.18  Inuse:        250
% 2.81/3.18  Deleted:      19
% 2.81/3.18  Deletedinuse: 7
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    18104
% 2.81/3.18  Kept:         8154
% 2.81/3.18  Inuse:        297
% 2.81/3.18  Deleted:      51
% 2.81/3.18  Deletedinuse: 36
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    23293
% 2.81/3.18  Kept:         10509
% 2.81/3.18  Inuse:        356
% 2.81/3.18  Deleted:      79
% 2.81/3.18  Deletedinuse: 54
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    26834
% 2.81/3.18  Kept:         12516
% 2.81/3.18  Inuse:        383
% 2.81/3.18  Deleted:      83
% 2.81/3.18  Deletedinuse: 58
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    30631
% 2.81/3.18  Kept:         14516
% 2.81/3.18  Inuse:        425
% 2.81/3.18  Deleted:      89
% 2.81/3.18  Deletedinuse: 64
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    34181
% 2.81/3.18  Kept:         16545
% 2.81/3.18  Inuse:        456
% 2.81/3.18  Deleted:      89
% 2.81/3.18  Deletedinuse: 64
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    39242
% 2.81/3.18  Kept:         18580
% 2.81/3.18  Inuse:        504
% 2.81/3.18  Deleted:      90
% 2.81/3.18  Deletedinuse: 65
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying clauses:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    43329
% 2.81/3.18  Kept:         20585
% 2.81/3.18  Inuse:        551
% 2.81/3.18  Deleted:      2539
% 2.81/3.18  Deletedinuse: 65
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    47776
% 2.81/3.18  Kept:         22659
% 2.81/3.18  Inuse:        575
% 2.81/3.18  Deleted:      2541
% 2.81/3.18  Deletedinuse: 67
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    51515
% 2.81/3.18  Kept:         24676
% 2.81/3.18  Inuse:        600
% 2.81/3.18  Deleted:      2541
% 2.81/3.18  Deletedinuse: 67
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  Resimplifying inuse:
% 2.81/3.18  Done
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Intermediate Status:
% 2.81/3.18  Generated:    54972
% 2.81/3.18  Kept:         26720
% 2.81/3.18  Inuse:        615
% 2.81/3.18  Deleted:      2542
% 2.81/3.18  Deletedinuse: 68
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Bliksems!, er is een bewijs:
% 2.81/3.18  % SZS status Unsatisfiable
% 2.81/3.18  % SZS output start Refutation
% 2.81/3.18  
% 2.81/3.18  clause( 1, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X, Y )
% 2.81/3.18     ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 2, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), subclass( X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 20, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 137, [ =( intersection( complement( 'kind_1_ordinals' ), 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 157, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 180, [ member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 188, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'ordinal_numbers' ) ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 21454, [ ~( member( X, 'limit_ordinals' ) ), member( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  .
% 2.81/3.18  clause( 27372, [] )
% 2.81/3.18  .
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  % SZS output end Refutation
% 2.81/3.18  found a proof!
% 2.81/3.18  
% 2.81/3.18  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 2.81/3.18  
% 2.81/3.18  initialclauses(
% 2.81/3.18  [ clause( 27374, [ ~( subclass( X, Y ) ), ~( member( Z, X ) ), member( Z, Y
% 2.81/3.18     ) ] )
% 2.81/3.18  , clause( 27375, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  , clause( 27376, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), 
% 2.81/3.18    subclass( X, Y ) ] )
% 2.81/3.18  , clause( 27377, [ subclass( X, 'universal_class' ) ] )
% 2.81/3.18  , clause( 27378, [ ~( =( X, Y ) ), subclass( X, Y ) ] )
% 2.81/3.18  , clause( 27379, [ ~( =( X, Y ) ), subclass( Y, X ) ] )
% 2.81/3.18  , clause( 27380, [ ~( subclass( X, Y ) ), ~( subclass( Y, X ) ), =( X, Y )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27381, [ ~( member( X, 'unordered_pair'( Y, Z ) ) ), =( X, Y ), 
% 2.81/3.18    =( X, Z ) ] )
% 2.81/3.18  , clause( 27382, [ ~( member( X, 'universal_class' ) ), member( X, 
% 2.81/3.18    'unordered_pair'( X, Y ) ) ] )
% 2.81/3.18  , clause( 27383, [ ~( member( X, 'universal_class' ) ), member( X, 
% 2.81/3.18    'unordered_pair'( Y, X ) ) ] )
% 2.81/3.18  , clause( 27384, [ member( 'unordered_pair'( X, Y ), 'universal_class' ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27385, [ =( 'unordered_pair'( X, X ), singleton( X ) ) ] )
% 2.81/3.18  , clause( 27386, [ =( 'unordered_pair'( singleton( X ), 'unordered_pair'( X
% 2.81/3.18    , singleton( Y ) ) ), 'ordered_pair'( X, Y ) ) ] )
% 2.81/3.18  , clause( 27387, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T
% 2.81/3.18     ) ) ), member( X, Z ) ] )
% 2.81/3.18  , clause( 27388, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( Z, T
% 2.81/3.18     ) ) ), member( Y, T ) ] )
% 2.81/3.18  , clause( 27389, [ ~( member( X, Y ) ), ~( member( Z, T ) ), member( 
% 2.81/3.18    'ordered_pair'( X, Z ), 'cross_product'( Y, T ) ) ] )
% 2.81/3.18  , clause( 27390, [ ~( member( X, 'cross_product'( Y, Z ) ) ), =( 
% 2.81/3.18    'ordered_pair'( first( X ), second( X ) ), X ) ] )
% 2.81/3.18  , clause( 27391, [ subclass( 'element_relation', 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27392, [ ~( member( 'ordered_pair'( X, Y ), 'element_relation' )
% 2.81/3.18     ), member( X, Y ) ] )
% 2.81/3.18  , clause( 27393, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ), ~( member( X, Y ) ), member( 
% 2.81/3.18    'ordered_pair'( X, Y ), 'element_relation' ) ] )
% 2.81/3.18  , clause( 27394, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Y ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27395, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27396, [ ~( member( X, Y ) ), ~( member( X, Z ) ), member( X, 
% 2.81/3.18    intersection( Y, Z ) ) ] )
% 2.81/3.18  , clause( 27397, [ ~( member( X, complement( Y ) ) ), ~( member( X, Y ) ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27398, [ ~( member( X, 'universal_class' ) ), member( X, 
% 2.81/3.18    complement( Y ) ), member( X, Y ) ] )
% 2.81/3.18  , clause( 27399, [ =( complement( intersection( complement( X ), complement( 
% 2.81/3.18    Y ) ) ), union( X, Y ) ) ] )
% 2.81/3.18  , clause( 27400, [ =( intersection( complement( intersection( X, Y ) ), 
% 2.81/3.18    complement( intersection( complement( X ), complement( Y ) ) ) ), 
% 2.81/3.18    'symmetric_difference'( X, Y ) ) ] )
% 2.81/3.18  , clause( 27401, [ =( intersection( X, 'cross_product'( Y, Z ) ), restrict( 
% 2.81/3.18    X, Y, Z ) ) ] )
% 2.81/3.18  , clause( 27402, [ =( intersection( 'cross_product'( X, Y ), Z ), restrict( 
% 2.81/3.18    Z, X, Y ) ) ] )
% 2.81/3.18  , clause( 27403, [ ~( =( restrict( X, singleton( Y ), 'universal_class' ), 
% 2.81/3.18    'null_class' ) ), ~( member( Y, 'domain_of'( X ) ) ) ] )
% 2.81/3.18  , clause( 27404, [ ~( member( X, 'universal_class' ) ), =( restrict( Y, 
% 2.81/3.18    singleton( X ), 'universal_class' ), 'null_class' ), member( X, 
% 2.81/3.18    'domain_of'( Y ) ) ] )
% 2.81/3.18  , clause( 27405, [ subclass( rotate( X ), 'cross_product'( 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ), 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27406, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 2.81/3.18    rotate( T ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, Z ), X ), T )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27407, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 2.81/3.18    T ) ), ~( member( 'ordered_pair'( 'ordered_pair'( Z, X ), Y ), 
% 2.81/3.18    'cross_product'( 'cross_product'( 'universal_class', 'universal_class' )
% 2.81/3.18    , 'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Z, X )
% 2.81/3.18    , Y ), rotate( T ) ) ] )
% 2.81/3.18  , clause( 27408, [ subclass( flip( X ), 'cross_product'( 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ), 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27409, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 2.81/3.18    flip( T ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), T ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27410, [ ~( member( 'ordered_pair'( 'ordered_pair'( X, Y ), Z ), 
% 2.81/3.18    T ) ), ~( member( 'ordered_pair'( 'ordered_pair'( Y, X ), Z ), 
% 2.81/3.18    'cross_product'( 'cross_product'( 'universal_class', 'universal_class' )
% 2.81/3.18    , 'universal_class' ) ) ), member( 'ordered_pair'( 'ordered_pair'( Y, X )
% 2.81/3.18    , Z ), flip( T ) ) ] )
% 2.81/3.18  , clause( 27411, [ =( 'domain_of'( flip( 'cross_product'( X, 
% 2.81/3.18    'universal_class' ) ) ), inverse( X ) ) ] )
% 2.81/3.18  , clause( 27412, [ =( 'domain_of'( inverse( X ) ), 'range_of'( X ) ) ] )
% 2.81/3.18  , clause( 27413, [ =( first( 'not_subclass_element'( restrict( X, Y, 
% 2.81/3.18    singleton( Z ) ), 'null_class' ) ), domain( X, Y, Z ) ) ] )
% 2.81/3.18  , clause( 27414, [ =( second( 'not_subclass_element'( restrict( X, 
% 2.81/3.18    singleton( Y ), Z ), 'null_class' ) ), range( X, Y, Z ) ) ] )
% 2.81/3.18  , clause( 27415, [ =( 'range_of'( restrict( X, Y, 'universal_class' ) ), 
% 2.81/3.18    image( X, Y ) ) ] )
% 2.81/3.18  , clause( 27416, [ =( union( X, singleton( X ) ), successor( X ) ) ] )
% 2.81/3.18  , clause( 27417, [ subclass( 'successor_relation', 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27418, [ ~( member( 'ordered_pair'( X, Y ), 'successor_relation'
% 2.81/3.18     ) ), =( successor( X ), Y ) ] )
% 2.81/3.18  , clause( 27419, [ ~( =( successor( X ), Y ) ), ~( member( 'ordered_pair'( 
% 2.81/3.18    X, Y ), 'cross_product'( 'universal_class', 'universal_class' ) ) ), 
% 2.81/3.18    member( 'ordered_pair'( X, Y ), 'successor_relation' ) ] )
% 2.81/3.18  , clause( 27420, [ ~( inductive( X ) ), member( 'null_class', X ) ] )
% 2.81/3.18  , clause( 27421, [ ~( inductive( X ) ), subclass( image( 
% 2.81/3.18    'successor_relation', X ), X ) ] )
% 2.81/3.18  , clause( 27422, [ ~( member( 'null_class', X ) ), ~( subclass( image( 
% 2.81/3.18    'successor_relation', X ), X ) ), inductive( X ) ] )
% 2.81/3.18  , clause( 27423, [ inductive( omega ) ] )
% 2.81/3.18  , clause( 27424, [ ~( inductive( X ) ), subclass( omega, X ) ] )
% 2.81/3.18  , clause( 27425, [ member( omega, 'universal_class' ) ] )
% 2.81/3.18  , clause( 27426, [ =( 'domain_of'( restrict( 'element_relation', 
% 2.81/3.18    'universal_class', X ) ), 'sum_class'( X ) ) ] )
% 2.81/3.18  , clause( 27427, [ ~( member( X, 'universal_class' ) ), member( 'sum_class'( 
% 2.81/3.18    X ), 'universal_class' ) ] )
% 2.81/3.18  , clause( 27428, [ =( complement( image( 'element_relation', complement( X
% 2.81/3.18     ) ) ), 'power_class'( X ) ) ] )
% 2.81/3.18  , clause( 27429, [ ~( member( X, 'universal_class' ) ), member( 
% 2.81/3.18    'power_class'( X ), 'universal_class' ) ] )
% 2.81/3.18  , clause( 27430, [ subclass( compose( X, Y ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27431, [ ~( member( 'ordered_pair'( X, Y ), compose( Z, T ) ) ), 
% 2.81/3.18    member( Y, image( Z, image( T, singleton( X ) ) ) ) ] )
% 2.81/3.18  , clause( 27432, [ ~( member( X, image( Y, image( Z, singleton( T ) ) ) ) )
% 2.81/3.18    , ~( member( 'ordered_pair'( T, X ), 'cross_product'( 'universal_class', 
% 2.81/3.18    'universal_class' ) ) ), member( 'ordered_pair'( T, X ), compose( Y, Z )
% 2.81/3.18     ) ] )
% 2.81/3.18  , clause( 27433, [ ~( 'single_valued_class'( X ) ), subclass( compose( X, 
% 2.81/3.18    inverse( X ) ), 'identity_relation' ) ] )
% 2.81/3.18  , clause( 27434, [ ~( subclass( compose( X, inverse( X ) ), 
% 2.81/3.18    'identity_relation' ) ), 'single_valued_class'( X ) ] )
% 2.81/3.18  , clause( 27435, [ ~( function( X ) ), subclass( X, 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27436, [ ~( function( X ) ), subclass( compose( X, inverse( X ) )
% 2.81/3.18    , 'identity_relation' ) ] )
% 2.81/3.18  , clause( 27437, [ ~( subclass( X, 'cross_product'( 'universal_class', 
% 2.81/3.18    'universal_class' ) ) ), ~( subclass( compose( X, inverse( X ) ), 
% 2.81/3.18    'identity_relation' ) ), function( X ) ] )
% 2.81/3.18  , clause( 27438, [ ~( function( X ) ), ~( member( Y, 'universal_class' ) )
% 2.81/3.18    , member( image( X, Y ), 'universal_class' ) ] )
% 2.81/3.18  , clause( 27439, [ =( X, 'null_class' ), member( regular( X ), X ) ] )
% 2.81/3.18  , clause( 27440, [ =( X, 'null_class' ), =( intersection( X, regular( X ) )
% 2.81/3.18    , 'null_class' ) ] )
% 2.81/3.18  , clause( 27441, [ =( 'sum_class'( image( X, singleton( Y ) ) ), apply( X, 
% 2.81/3.18    Y ) ) ] )
% 2.81/3.18  , clause( 27442, [ function( choice ) ] )
% 2.81/3.18  , clause( 27443, [ ~( member( X, 'universal_class' ) ), =( X, 'null_class'
% 2.81/3.18     ), member( apply( choice, X ), X ) ] )
% 2.81/3.18  , clause( 27444, [ ~( 'one_to_one'( X ) ), function( X ) ] )
% 2.81/3.18  , clause( 27445, [ ~( 'one_to_one'( X ) ), function( inverse( X ) ) ] )
% 2.81/3.18  , clause( 27446, [ ~( function( inverse( X ) ) ), ~( function( X ) ), 
% 2.81/3.18    'one_to_one'( X ) ] )
% 2.81/3.18  , clause( 27447, [ =( intersection( 'cross_product'( 'universal_class', 
% 2.81/3.18    'universal_class' ), intersection( 'cross_product'( 'universal_class', 
% 2.81/3.18    'universal_class' ), complement( compose( complement( 'element_relation'
% 2.81/3.18     ), inverse( 'element_relation' ) ) ) ) ), 'subset_relation' ) ] )
% 2.81/3.18  , clause( 27448, [ =( intersection( inverse( 'subset_relation' ), 
% 2.81/3.18    'subset_relation' ), 'identity_relation' ) ] )
% 2.81/3.18  , clause( 27449, [ =( complement( 'domain_of'( intersection( X, 
% 2.81/3.18    'identity_relation' ) ) ), diagonalise( X ) ) ] )
% 2.81/3.18  , clause( 27450, [ =( intersection( 'domain_of'( X ), diagonalise( compose( 
% 2.81/3.18    inverse( 'element_relation' ), X ) ) ), cantor( X ) ) ] )
% 2.81/3.18  , clause( 27451, [ ~( operation( X ) ), function( X ) ] )
% 2.81/3.18  , clause( 27452, [ ~( operation( X ) ), =( 'cross_product'( 'domain_of'( 
% 2.81/3.18    'domain_of'( X ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27453, [ ~( operation( X ) ), subclass( 'range_of'( X ), 
% 2.81/3.18    'domain_of'( 'domain_of'( X ) ) ) ] )
% 2.81/3.18  , clause( 27454, [ ~( function( X ) ), ~( =( 'cross_product'( 'domain_of'( 
% 2.81/3.18    'domain_of'( X ) ), 'domain_of'( 'domain_of'( X ) ) ), 'domain_of'( X ) )
% 2.81/3.18     ), ~( subclass( 'range_of'( X ), 'domain_of'( 'domain_of'( X ) ) ) ), 
% 2.81/3.18    operation( X ) ] )
% 2.81/3.18  , clause( 27455, [ ~( compatible( X, Y, Z ) ), function( X ) ] )
% 2.81/3.18  , clause( 27456, [ ~( compatible( X, Y, Z ) ), =( 'domain_of'( 'domain_of'( 
% 2.81/3.18    Y ) ), 'domain_of'( X ) ) ] )
% 2.81/3.18  , clause( 27457, [ ~( compatible( X, Y, Z ) ), subclass( 'range_of'( X ), 
% 2.81/3.18    'domain_of'( 'domain_of'( Z ) ) ) ] )
% 2.81/3.18  , clause( 27458, [ ~( function( X ) ), ~( =( 'domain_of'( 'domain_of'( Y )
% 2.81/3.18     ), 'domain_of'( X ) ) ), ~( subclass( 'range_of'( X ), 'domain_of'( 
% 2.81/3.18    'domain_of'( Z ) ) ) ), compatible( X, Y, Z ) ] )
% 2.81/3.18  , clause( 27459, [ ~( homomorphism( X, Y, Z ) ), operation( Y ) ] )
% 2.81/3.18  , clause( 27460, [ ~( homomorphism( X, Y, Z ) ), operation( Z ) ] )
% 2.81/3.18  , clause( 27461, [ ~( homomorphism( X, Y, Z ) ), compatible( X, Y, Z ) ] )
% 2.81/3.18  , clause( 27462, [ ~( homomorphism( X, Y, Z ) ), ~( member( 'ordered_pair'( 
% 2.81/3.18    T, U ), 'domain_of'( Y ) ) ), =( apply( Z, 'ordered_pair'( apply( X, T )
% 2.81/3.18    , apply( X, U ) ) ), apply( X, apply( Y, 'ordered_pair'( T, U ) ) ) ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27463, [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( 
% 2.81/3.18    Z, X, Y ) ), member( 'ordered_pair'( 'not_homomorphism1'( Z, X, Y ), 
% 2.81/3.18    'not_homomorphism2'( Z, X, Y ) ), 'domain_of'( X ) ), homomorphism( Z, X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  , clause( 27464, [ ~( operation( X ) ), ~( operation( Y ) ), ~( compatible( 
% 2.81/3.18    Z, X, Y ) ), ~( =( apply( Y, 'ordered_pair'( apply( Z, 
% 2.81/3.18    'not_homomorphism1'( Z, X, Y ) ), apply( Z, 'not_homomorphism2'( Z, X, Y
% 2.81/3.18     ) ) ) ), apply( Z, apply( X, 'ordered_pair'( 'not_homomorphism1'( Z, X, 
% 2.81/3.18    Y ), 'not_homomorphism2'( Z, X, Y ) ) ) ) ) ), homomorphism( Z, X, Y ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27465, [ subclass( 'compose_class'( X ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27466, [ ~( member( 'ordered_pair'( X, Y ), 'compose_class'( Z )
% 2.81/3.18     ) ), =( compose( Z, X ), Y ) ] )
% 2.81/3.18  , clause( 27467, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ), ~( =( compose( Z, X ), Y ) )
% 2.81/3.18    , member( 'ordered_pair'( X, Y ), 'compose_class'( Z ) ) ] )
% 2.81/3.18  , clause( 27468, [ subclass( 'composition_function', 'cross_product'( 
% 2.81/3.18    'universal_class', 'cross_product'( 'universal_class', 'universal_class'
% 2.81/3.18     ) ) ) ] )
% 2.81/3.18  , clause( 27469, [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 2.81/3.18    'composition_function' ) ), =( compose( X, Y ), Z ) ] )
% 2.81/3.18  , clause( 27470, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ), member( 'ordered_pair'( X, 
% 2.81/3.18    'ordered_pair'( Y, compose( X, Y ) ) ), 'composition_function' ) ] )
% 2.81/3.18  , clause( 27471, [ subclass( 'domain_relation', 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27472, [ ~( member( 'ordered_pair'( X, Y ), 'domain_relation' ) )
% 2.81/3.18    , =( 'domain_of'( X ), Y ) ] )
% 2.81/3.18  , clause( 27473, [ ~( member( X, 'universal_class' ) ), member( 
% 2.81/3.18    'ordered_pair'( X, 'domain_of'( X ) ), 'domain_relation' ) ] )
% 2.81/3.18  , clause( 27474, [ =( first( 'not_subclass_element'( compose( X, inverse( X
% 2.81/3.18     ) ), 'identity_relation' ) ), 'single_valued1'( X ) ) ] )
% 2.81/3.18  , clause( 27475, [ =( second( 'not_subclass_element'( compose( X, inverse( 
% 2.81/3.18    X ) ), 'identity_relation' ) ), 'single_valued2'( X ) ) ] )
% 2.81/3.18  , clause( 27476, [ =( domain( X, image( inverse( X ), singleton( 
% 2.81/3.18    'single_valued1'( X ) ) ), 'single_valued2'( X ) ), 'single_valued3'( X )
% 2.81/3.18     ) ] )
% 2.81/3.18  , clause( 27477, [ =( intersection( complement( compose( 'element_relation'
% 2.81/3.18    , complement( 'identity_relation' ) ) ), 'element_relation' ), 
% 2.81/3.18    'singleton_relation' ) ] )
% 2.81/3.18  , clause( 27478, [ subclass( 'application_function', 'cross_product'( 
% 2.81/3.18    'universal_class', 'cross_product'( 'universal_class', 'universal_class'
% 2.81/3.18     ) ) ) ] )
% 2.81/3.18  , clause( 27479, [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 2.81/3.18    'application_function' ) ), member( Y, 'domain_of'( X ) ) ] )
% 2.81/3.18  , clause( 27480, [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 2.81/3.18    'application_function' ) ), =( apply( X, Y ), Z ) ] )
% 2.81/3.18  , clause( 27481, [ ~( member( 'ordered_pair'( X, 'ordered_pair'( Y, Z ) ), 
% 2.81/3.18    'cross_product'( 'universal_class', 'cross_product'( 'universal_class', 
% 2.81/3.18    'universal_class' ) ) ) ), ~( member( Y, 'domain_of'( X ) ) ), member( 
% 2.81/3.18    'ordered_pair'( X, 'ordered_pair'( Y, apply( X, Y ) ) ), 
% 2.81/3.18    'application_function' ) ] )
% 2.81/3.18  , clause( 27482, [ ~( maps( X, Y, Z ) ), function( X ) ] )
% 2.81/3.18  , clause( 27483, [ ~( maps( X, Y, Z ) ), =( 'domain_of'( X ), Y ) ] )
% 2.81/3.18  , clause( 27484, [ ~( maps( X, Y, Z ) ), subclass( 'range_of'( X ), Z ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27485, [ ~( function( X ) ), ~( subclass( 'range_of'( X ), Y ) )
% 2.81/3.18    , maps( X, 'domain_of'( X ), Y ) ] )
% 2.81/3.18  , clause( 27486, [ =( union( X, inverse( X ) ), 'symmetrization_of'( X ) )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27487, [ ~( irreflexive( X, Y ) ), subclass( restrict( X, Y, Y )
% 2.81/3.18    , complement( 'identity_relation' ) ) ] )
% 2.81/3.18  , clause( 27488, [ ~( subclass( restrict( X, Y, Y ), complement( 
% 2.81/3.18    'identity_relation' ) ) ), irreflexive( X, Y ) ] )
% 2.81/3.18  , clause( 27489, [ ~( connected( X, Y ) ), subclass( 'cross_product'( Y, Y
% 2.81/3.18     ), union( 'identity_relation', 'symmetrization_of'( X ) ) ) ] )
% 2.81/3.18  , clause( 27490, [ ~( subclass( 'cross_product'( X, X ), union( 
% 2.81/3.18    'identity_relation', 'symmetrization_of'( Y ) ) ) ), connected( Y, X ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27491, [ ~( transitive( X, Y ) ), subclass( compose( restrict( X
% 2.81/3.18    , Y, Y ), restrict( X, Y, Y ) ), restrict( X, Y, Y ) ) ] )
% 2.81/3.18  , clause( 27492, [ ~( subclass( compose( restrict( X, Y, Y ), restrict( X, 
% 2.81/3.18    Y, Y ) ), restrict( X, Y, Y ) ) ), transitive( X, Y ) ] )
% 2.81/3.18  , clause( 27493, [ ~( asymmetric( X, Y ) ), =( restrict( intersection( X, 
% 2.81/3.18    inverse( X ) ), Y, Y ), 'null_class' ) ] )
% 2.81/3.18  , clause( 27494, [ ~( =( restrict( intersection( X, inverse( X ) ), Y, Y )
% 2.81/3.18    , 'null_class' ) ), asymmetric( X, Y ) ] )
% 2.81/3.18  , clause( 27495, [ =( segment( X, Y, Z ), 'domain_of'( restrict( X, Y, 
% 2.81/3.18    singleton( Z ) ) ) ) ] )
% 2.81/3.18  , clause( 27496, [ ~( 'well_ordering'( X, Y ) ), connected( X, Y ) ] )
% 2.81/3.18  , clause( 27497, [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), =( 
% 2.81/3.18    Z, 'null_class' ), member( least( X, Z ), Z ) ] )
% 2.81/3.18  , clause( 27498, [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), ~( 
% 2.81/3.18    member( T, Z ) ), member( least( X, Z ), Z ) ] )
% 2.81/3.18  , clause( 27499, [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), =( 
% 2.81/3.18    segment( X, Z, least( X, Z ) ), 'null_class' ) ] )
% 2.81/3.18  , clause( 27500, [ ~( 'well_ordering'( X, Y ) ), ~( subclass( Z, Y ) ), ~( 
% 2.81/3.18    member( T, Z ) ), ~( member( 'ordered_pair'( T, least( X, Z ) ), X ) ) ]
% 2.81/3.18     )
% 2.81/3.18  , clause( 27501, [ ~( connected( X, Y ) ), ~( =( 'not_well_ordering'( X, Y
% 2.81/3.18     ), 'null_class' ) ), 'well_ordering'( X, Y ) ] )
% 2.81/3.18  , clause( 27502, [ ~( connected( X, Y ) ), subclass( 'not_well_ordering'( X
% 2.81/3.18    , Y ), Y ), 'well_ordering'( X, Y ) ] )
% 2.81/3.18  , clause( 27503, [ ~( member( X, 'not_well_ordering'( Y, Z ) ) ), ~( =( 
% 2.81/3.18    segment( Y, 'not_well_ordering'( Y, Z ), X ), 'null_class' ) ), ~( 
% 2.81/3.18    connected( Y, Z ) ), 'well_ordering'( Y, Z ) ] )
% 2.81/3.18  , clause( 27504, [ ~( section( X, Y, Z ) ), subclass( Y, Z ) ] )
% 2.81/3.18  , clause( 27505, [ ~( section( X, Y, Z ) ), subclass( 'domain_of'( restrict( 
% 2.81/3.18    X, Z, Y ) ), Y ) ] )
% 2.81/3.18  , clause( 27506, [ ~( subclass( X, Y ) ), ~( subclass( 'domain_of'( 
% 2.81/3.18    restrict( Z, Y, X ) ), X ) ), section( Z, X, Y ) ] )
% 2.81/3.18  , clause( 27507, [ ~( member( X, 'ordinal_numbers' ) ), 'well_ordering'( 
% 2.81/3.18    'element_relation', X ) ] )
% 2.81/3.18  , clause( 27508, [ ~( member( X, 'ordinal_numbers' ) ), subclass( 
% 2.81/3.18    'sum_class'( X ), X ) ] )
% 2.81/3.18  , clause( 27509, [ ~( 'well_ordering'( 'element_relation', X ) ), ~( 
% 2.81/3.18    subclass( 'sum_class'( X ), X ) ), ~( member( X, 'universal_class' ) ), 
% 2.81/3.18    member( X, 'ordinal_numbers' ) ] )
% 2.81/3.18  , clause( 27510, [ ~( 'well_ordering'( 'element_relation', X ) ), ~( 
% 2.81/3.18    subclass( 'sum_class'( X ), X ) ), member( X, 'ordinal_numbers' ), =( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  , clause( 27511, [ =( union( singleton( 'null_class' ), image( 
% 2.81/3.18    'successor_relation', 'ordinal_numbers' ) ), 'kind_1_ordinals' ) ] )
% 2.81/3.18  , clause( 27512, [ =( intersection( complement( 'kind_1_ordinals' ), 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , clause( 27513, [ subclass( 'rest_of'( X ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27514, [ ~( member( 'ordered_pair'( X, Y ), 'rest_of'( Z ) ) ), 
% 2.81/3.18    member( X, 'domain_of'( Z ) ) ] )
% 2.81/3.18  , clause( 27515, [ ~( member( 'ordered_pair'( X, Y ), 'rest_of'( Z ) ) ), 
% 2.81/3.18    =( restrict( Z, X, 'universal_class' ), Y ) ] )
% 2.81/3.18  , clause( 27516, [ ~( member( X, 'domain_of'( Y ) ) ), ~( =( restrict( Y, X
% 2.81/3.18    , 'universal_class' ), Z ) ), member( 'ordered_pair'( X, Z ), 'rest_of'( 
% 2.81/3.18    Y ) ) ] )
% 2.81/3.18  , clause( 27517, [ subclass( 'rest_relation', 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27518, [ ~( member( 'ordered_pair'( X, Y ), 'rest_relation' ) ), 
% 2.81/3.18    =( 'rest_of'( X ), Y ) ] )
% 2.81/3.18  , clause( 27519, [ ~( member( X, 'universal_class' ) ), member( 
% 2.81/3.18    'ordered_pair'( X, 'rest_of'( X ) ), 'rest_relation' ) ] )
% 2.81/3.18  , clause( 27520, [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), 
% 2.81/3.18    function( Y ) ] )
% 2.81/3.18  , clause( 27521, [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), 
% 2.81/3.18    function( X ) ] )
% 2.81/3.18  , clause( 27522, [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), 
% 2.81/3.18    member( 'domain_of'( X ), 'ordinal_numbers' ) ] )
% 2.81/3.18  , clause( 27523, [ ~( member( X, 'recursion_equation_functions'( Y ) ) ), 
% 2.81/3.18    =( compose( Y, 'rest_of'( X ) ), X ) ] )
% 2.81/3.18  , clause( 27524, [ ~( function( X ) ), ~( function( Y ) ), ~( member( 
% 2.81/3.18    'domain_of'( Y ), 'ordinal_numbers' ) ), ~( =( compose( X, 'rest_of'( Y )
% 2.81/3.18     ), Y ) ), member( Y, 'recursion_equation_functions'( X ) ) ] )
% 2.81/3.18  , clause( 27525, [ subclass( 'union_of_range_map', 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ] )
% 2.81/3.18  , clause( 27526, [ ~( member( 'ordered_pair'( X, Y ), 'union_of_range_map'
% 2.81/3.18     ) ), =( 'sum_class'( 'range_of'( X ) ), Y ) ] )
% 2.81/3.18  , clause( 27527, [ ~( member( 'ordered_pair'( X, Y ), 'cross_product'( 
% 2.81/3.18    'universal_class', 'universal_class' ) ) ), ~( =( 'sum_class'( 'range_of'( 
% 2.81/3.18    X ) ), Y ) ), member( 'ordered_pair'( X, Y ), 'union_of_range_map' ) ] )
% 2.81/3.18  , clause( 27528, [ =( apply( recursion( X, 'successor_relation', 
% 2.81/3.18    'union_of_range_map' ), Y ), 'ordinal_add'( X, Y ) ) ] )
% 2.81/3.18  , clause( 27529, [ =( recursion( 'null_class', apply( 'add_relation', X ), 
% 2.81/3.18    'union_of_range_map' ), 'ordinal_multiply'( X, Y ) ) ] )
% 2.81/3.18  , clause( 27530, [ ~( member( X, omega ) ), =( 'integer_of'( X ), X ) ] )
% 2.81/3.18  , clause( 27531, [ member( X, omega ), =( 'integer_of'( X ), 'null_class' )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27532, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ]
% 2.81/3.18     )
% 2.81/3.18  ] ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 1, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X, Y )
% 2.81/3.18     ] )
% 2.81/3.18  , clause( 27375, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 2.81/3.18     ), ==>( 1, 1 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 2, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), subclass( X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  , clause( 27376, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), 
% 2.81/3.18    subclass( X, Y ) ] )
% 2.81/3.18  , substitution( 0, [ :=( X, X ), :=( Y, Y )] ), permutation( 0, [ ==>( 0, 0
% 2.81/3.18     ), ==>( 1, 1 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 20, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ] )
% 2.81/3.18  , clause( 27395, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ]
% 2.81/3.18     )
% 2.81/3.18  , substitution( 0, [ :=( X, X ), :=( Y, Y ), :=( Z, Z )] ), 
% 2.81/3.18    permutation( 0, [ ==>( 0, 0 ), ==>( 1, 1 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 137, [ =( intersection( complement( 'kind_1_ordinals' ), 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , clause( 27512, [ =( intersection( complement( 'kind_1_ordinals' ), 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 157, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , clause( 27532, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ]
% 2.81/3.18     )
% 2.81/3.18  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  resolution(
% 2.81/3.18  clause( 27700, [ member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , clause( 157, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , 0, clause( 1, [ member( 'not_subclass_element'( X, Y ), X ), subclass( X
% 2.81/3.18    , Y ) ] )
% 2.81/3.18  , 1, substitution( 0, [] ), substitution( 1, [ :=( X, 'limit_ordinals' ), 
% 2.81/3.18    :=( Y, 'ordinal_numbers' )] )).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 180, [ member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , clause( 27700, [ member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  resolution(
% 2.81/3.18  clause( 27701, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , clause( 157, [ ~( subclass( 'limit_ordinals', 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , 0, clause( 2, [ ~( member( 'not_subclass_element'( X, Y ), Y ) ), 
% 2.81/3.18    subclass( X, Y ) ] )
% 2.81/3.18  , 1, substitution( 0, [] ), substitution( 1, [ :=( X, 'limit_ordinals' ), 
% 2.81/3.18    :=( Y, 'ordinal_numbers' )] )).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 188, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , clause( 27701, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , substitution( 0, [] ), permutation( 0, [ ==>( 0, 0 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  paramod(
% 2.81/3.18  clause( 27703, [ ~( member( X, 'limit_ordinals' ) ), member( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  , clause( 137, [ =( intersection( complement( 'kind_1_ordinals' ), 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , 0, clause( 20, [ ~( member( X, intersection( Y, Z ) ) ), member( X, Z ) ]
% 2.81/3.18     )
% 2.81/3.18  , 0, 3, substitution( 0, [] ), substitution( 1, [ :=( X, X ), :=( Y, 
% 2.81/3.18    complement( 'kind_1_ordinals' ) ), :=( Z, 'ordinal_numbers' )] )).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 21454, [ ~( member( X, 'limit_ordinals' ) ), member( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  , clause( 27703, [ ~( member( X, 'limit_ordinals' ) ), member( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  , substitution( 0, [ :=( X, X )] ), permutation( 0, [ ==>( 0, 0 ), ==>( 1, 
% 2.81/3.18    1 )] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  resolution(
% 2.81/3.18  clause( 27704, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ) ] )
% 2.81/3.18  , clause( 188, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'ordinal_numbers' ) ) ] )
% 2.81/3.18  , 0, clause( 21454, [ ~( member( X, 'limit_ordinals' ) ), member( X, 
% 2.81/3.18    'ordinal_numbers' ) ] )
% 2.81/3.18  , 1, substitution( 0, [] ), substitution( 1, [ :=( X, 
% 2.81/3.18    'not_subclass_element'( 'limit_ordinals', 'ordinal_numbers' ) )] )).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  resolution(
% 2.81/3.18  clause( 27705, [] )
% 2.81/3.18  , clause( 27704, [ ~( member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ) ] )
% 2.81/3.18  , 0, clause( 180, [ member( 'not_subclass_element'( 'limit_ordinals', 
% 2.81/3.18    'ordinal_numbers' ), 'limit_ordinals' ) ] )
% 2.81/3.18  , 0, substitution( 0, [] ), substitution( 1, [] )).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  subsumption(
% 2.81/3.18  clause( 27372, [] )
% 2.81/3.18  , clause( 27705, [] )
% 2.81/3.18  , substitution( 0, [] ), permutation( 0, [] ) ).
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  end.
% 2.81/3.18  
% 2.81/3.18  % ABCDEFGHIJKLMNOPQRSTUVWXYZ
% 2.81/3.18  
% 2.81/3.18  Memory use:
% 2.81/3.18  
% 2.81/3.18  space for terms:        447836
% 2.81/3.18  space for clauses:      1307398
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  clauses generated:      56663
% 2.81/3.18  clauses kept:           27373
% 2.81/3.18  clauses selected:       633
% 2.81/3.18  clauses deleted:        2545
% 2.81/3.18  clauses inuse deleted:  68
% 2.81/3.18  
% 2.81/3.18  subsentry:          175601
% 2.81/3.18  literals s-matched: 127955
% 2.81/3.18  literals matched:   125573
% 2.81/3.18  full subsumption:   55031
% 2.81/3.18  
% 2.81/3.18  checksum:           -515944319
% 2.81/3.18  
% 2.81/3.18  
% 2.81/3.18  Bliksem ended
%------------------------------------------------------------------------------