TPTP Problem File: LAT267-2.p
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%------------------------------------------------------------------------------
% File : LAT267-2 : TPTP v9.0.0. Released v3.2.0.
% Domain : Analysis
% Problem : Problem about Tarski's fixed point theorem
% Version : [Pau06] axioms : Reduced > Especial.
% English :
% Refs : [Pau06] Paulson (2006), Email to G. Sutcliffe
% Source : [Pau06]
% Names :
% Status : Unsatisfiable
% Rating : 0.00 v3.2.0
% Syntax : Number of clauses : 2 ( 2 unt; 0 nHn; 2 RR)
% Number of literals : 2 ( 0 equ; 1 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 1 ( 1 usr; 0 prp; 3-3 aty)
% Number of functors : 3 ( 3 usr; 3 con; 0-0 aty)
% Number of variables : 0 ( 0 sgn)
% SPC : CNF_UNS_EPR_NEQ_HRN
% Comments : The problems in the [Pau06] collection each have very many axioms,
% of which only a small selection are required for the refutation.
% The mission is to find those few axioms, after which a refutation
% can be quite easily found. This version has only the necessary
% axioms.
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cnf(cls_conjecture_1,negated_conjecture,
c_in(v_x,v_S,t_a) ).
cnf(cls_conjecture_2,negated_conjecture,
~ c_in(v_x,v_S,t_a) ).
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