TPTP Problem File: SET786-1.p
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% File : SET786-1 : TPTP v9.0.0. Released v2.5.0.
% Domain : Set theory
% Problem : Peter Andrews Problem THM25
% Version : Especial.
% English :
% Refs : [And97] Andrews (1994), Email to G. Sutcliffe
% Source : [And97]
% Names : THM25 [And97]
% Status : Unsatisfiable
% Rating : 0.00 v6.3.0, 0.14 v6.2.0, 0.00 v2.5.0
% Syntax : Number of clauses : 3 ( 0 unt; 2 nHn; 1 RR)
% Number of literals : 7 ( 0 equ; 3 neg)
% Maximal clause size : 3 ( 2 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 1 ( 1 usr; 0 prp; 2-2 aty)
% Number of functors : 2 ( 2 usr; 1 con; 0-1 aty)
% Number of variables : 4 ( 0 sgn)
% SPC : CNF_UNS_RFO_NEQ_NHN
% Comments :
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cnf(thm25_1,negated_conjecture,
( ~ element(B,A)
| ~ element(A,B)
| ~ element(A,sk1) ) ).
cnf(thm25_2,negated_conjecture,
( element(A,sk1)
| element(A,sk2(A)) ) ).
cnf(thm25_3,negated_conjecture,
( element(A,sk1)
| element(sk2(A),A) ) ).
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