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1 2 3 4 5 6 7 8 9 10 11 12 13 | % The LADR formulas contain function or predicate symbols
% that are not legal TPTP symbols, and we have replaced those
% symbols with new symbols. Here is the list of the unaccepted
% symbols and the corresponding replacements.
%
% (arity 1) ' '\''
% (arity 2) + '+'
cnf(sos,axiom,'+'(A,B) = '+'(B,A)).
cnf(sos,axiom,'+'('+'(A,B),C) = '+'(A,'+'(B,C))).
cnf(sos,axiom,'\''('+'('\''('+'(A,B)),'\''('+'(A,'\''(B))))) = A).
fof(sos,axiom,? [X0] : '+'(X0,X0) = X0).
fof(goals,conjecture,! [X1] : ! [X2] : '+'('\''('+'(X1,'\''(X2))),'\''('+'('\''(X1),'\''(X2)))) = X2).
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