## TPTP Problem File: ROB029-1.p

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```%--------------------------------------------------------------------------
% File     : ROB029-1 : TPTP v7.5.0. Released v2.5.0.
% Domain   : Robbins Algebra
% Problem  : Robbins algebra numbers axioms
% Version  : [Win90] (equality) axioms.
% English  :

% Refs     : [HMT71] Henkin et al. (1971), Cylindrical Algebras
%          : [Win90] Winker (1990), Robbins Algebra: Conditions that make a
% Source   : [Win90]
% Names    :

% Status   : Satisfiable
% Rating   : 0.38 v7.5.0, 0.44 v7.4.0, 0.45 v7.3.0, 0.44 v7.1.0, 0.38 v7.0.0, 0.43 v6.4.0, 0.29 v6.3.0, 0.25 v6.2.0, 0.30 v6.1.0, 0.33 v6.0.0, 0.29 v5.5.0, 0.38 v5.4.0, 0.60 v5.3.0, 0.56 v5.2.0, 0.60 v5.0.0, 0.56 v4.1.0, 0.57 v4.0.1, 0.60 v4.0.0, 0.25 v3.7.0, 0.33 v3.4.0, 0.50 v3.3.0, 0.00 v3.2.0, 0.60 v3.1.0, 0.00 v2.6.0, 0.67 v2.5.0
% Syntax   : Number of clauses     :    7 (   0 non-Horn;   5 unit;   2 RR)
%            Number of atoms       :    9 (   5 equality)
%            Maximal clause size   :    2 (   1 average)
%            Number of predicates  :    2 (   0 propositional; 1-2 arity)
%            Number of functors    :    5 (   1 constant; 0-2 arity)
%            Number of variables   :   11 (   0 singleton)
%            Maximal term depth    :    6 (   2 average)
% SPC      : CNF_SAT_RFO_EQU_NUE