TPTP Problem File: BOO011-4.p
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% File : BOO011-4 : TPTP v9.0.0. Bugfixed v1.2.1.
% Domain : Boolean Algebra
% Problem : Inverse of additive identity = Multiplicative identity
% Version : [Ver94] (equality) axioms.
% English :
% Refs : [Ver94] Veroff (1994), Problem Set
% Source : [Ver94]
% Names : TG [Ver94]
% Status : Unsatisfiable
% Rating : 0.00 v8.1.0, 0.05 v7.5.0, 0.04 v7.4.0, 0.09 v7.3.0, 0.05 v7.1.0, 0.00 v7.0.0, 0.05 v6.3.0, 0.06 v6.2.0, 0.07 v6.1.0, 0.06 v6.0.0, 0.10 v5.5.0, 0.05 v5.4.0, 0.00 v5.1.0, 0.07 v4.1.0, 0.09 v4.0.1, 0.07 v4.0.0, 0.08 v3.7.0, 0.00 v2.0.0
% Syntax : Number of clauses : 9 ( 9 unt; 0 nHn; 1 RR)
% Number of literals : 9 ( 9 equ; 1 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 1 ( 0 usr; 0 prp; 2-2 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 14 ( 0 sgn)
% SPC : CNF_UNS_RFO_PEQ_UEQ
% Comments :
% Bugfixes : v1.2.1 - Clause prove_inverse_of_1_is_0 fixed.
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%----Include boolean algebra axioms for equality formulation
include('Axioms/BOO004-0.ax').
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cnf(prove_inverse_of_1_is_0,negated_conjecture,
inverse(additive_identity) != multiplicative_identity ).
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