%------------------------------------------------------------------------------
% File : Z3---4.15.1
% Problem : SET095+1 : TPTP v9.0.0. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp
% Command : run_E %s %d THM
% Computer : n014.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Sat Jun 21 05:25:12 AM UTC 2025
% Result : Theorem 0.19s 0.38s
% Output : Proof 0.19s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11 % Problem : SET095+1 : TPTP v9.0.0. Bugfixed v5.4.0.
% 0.03/0.11 % Command : run_E %s %d THM
% 0.11/0.32 % Computer : n014.cluster.edu
% 0.11/0.32 % Model : x86_64 x86_64
% 0.11/0.32 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.32 % Memory : 8042.1875MB
% 0.11/0.32 % OS : Linux 3.10.0-693.el7.x86_64
% 0.11/0.32 % CPULimit : 300
% 0.11/0.32 % WCLimit : 300
% 0.11/0.32 % DateTime : Fri Jun 20 04:17:09 EDT 2025
% 0.11/0.32 % CPUTime :
% 0.19/0.38 % SZS status Theorem
% 0.19/0.38 % SZS output start Proof
% 0.19/0.38 tff(member_type, type, (
% 0.19/0.38 member: ( $i * $i ) > $o)).
% 0.19/0.38 tff(tptp_fun_Y_7_type, type, (
% 0.19/0.38 tptp_fun_Y_7: $i)).
% 0.19/0.38 tff(tptp_fun_U_0_type, type, (
% 0.19/0.38 tptp_fun_U_0: ( $i * $i ) > $i)).
% 0.19/0.38 tff(singleton_type, type, (
% 0.19/0.38 singleton: $i > $i)).
% 0.19/0.38 tff(tptp_fun_X_8_type, type, (
% 0.19/0.38 tptp_fun_X_8: $i)).
% 0.19/0.38 tff(universal_class_type, type, (
% 0.19/0.38 universal_class: $i)).
% 0.19/0.38 tff(unordered_pair_type, type, (
% 0.19/0.38 unordered_pair: ( $i * $i ) > $i)).
% 0.19/0.38 tff(subclass_type, type, (
% 0.19/0.38 subclass: ( $i * $i ) > $o)).
% 0.19/0.38 tff(1,plain,
% 0.19/0.38 (^[U: $i, X: $i, Y: $i] : refl((~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y)))) <=> (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y)))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(2,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y)))) <=> ![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[1])).
% 0.19/0.38 tff(3,plain,
% 0.19/0.38 (^[U: $i, X: $i, Y: $i] : trans(trans(monotonicity(rewrite((member(U, universal_class) & ((U = Y) | (U = X))) <=> (~((~member(U, universal_class)) | (~((U = Y) | (U = X)))))), ((member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))) <=> (member(U, unordered_pair(X, Y)) <=> (~((~member(U, universal_class)) | (~((U = Y) | (U = X)))))))), rewrite((member(U, unordered_pair(X, Y)) <=> (~((~member(U, universal_class)) | (~((U = Y) | (U = X)))))) <=> (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))), ((member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))) <=> (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y)))))), rewrite((~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y)))) <=> (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))), ((member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))) <=> (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(4,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))) <=> ![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[3])).
% 0.19/0.38 tff(5,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))) <=> ![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X))))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(6,plain,
% 0.19/0.38 (^[U: $i, X: $i, Y: $i] : rewrite((member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = X) | (U = Y)))) <=> (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X)))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(7,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = X) | (U = Y)))) <=> ![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[6])).
% 0.19/0.38 tff(8,axiom,(![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = X) | (U = Y))))), file('/export/starexec/sandbox/benchmark/Axioms/SET005+0.ax','unordered_pair_defn')).
% 0.19/0.38 tff(9,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X))))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[8, 7])).
% 0.19/0.38 tff(10,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X))))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[9, 5])).
% 0.19/0.38 tff(11,plain,(
% 0.19/0.38 ![U: $i, X: $i, Y: $i] : (member(U, unordered_pair(X, Y)) <=> (member(U, universal_class) & ((U = Y) | (U = X))))),
% 0.19/0.38 inference(skolemize,[status(sab)],[10])).
% 0.19/0.38 tff(12,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[11, 4])).
% 0.19/0.38 tff(13,plain,
% 0.19/0.38 (![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[12, 2])).
% 0.19/0.38 tff(14,plain,
% 0.19/0.38 (((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))) <=> ((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(15,plain,
% 0.19/0.38 ((~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))) <=> (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(16,plain,
% 0.19/0.38 ((((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))) <=> (((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(17,plain,
% 0.19/0.38 ((~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))) <=> (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))),
% 0.19/0.38 inference(monotonicity,[status(thm)],[16])).
% 0.19/0.38 tff(18,plain,
% 0.19/0.38 ((~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))) <=> (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))),
% 0.19/0.38 inference(transitivity,[status(thm)],[17, 15])).
% 0.19/0.38 tff(19,plain,
% 0.19/0.38 (((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))) <=> ((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))))),
% 0.19/0.38 inference(monotonicity,[status(thm)],[18])).
% 0.19/0.38 tff(20,plain,
% 0.19/0.38 (((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))) <=> ((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))))),
% 0.19/0.38 inference(transitivity,[status(thm)],[19, 14])).
% 0.19/0.38 tff(21,plain,
% 0.19/0.38 ((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~((tptp_fun_U_0(Y!7, singleton(X!8)) = X!8) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))),
% 0.19/0.38 inference(quant_inst,[status(thm)],[])).
% 0.19/0.38 tff(22,plain,
% 0.19/0.38 ((~![U: $i, X: $i, Y: $i] : (~(((~member(U, universal_class)) | (~((U = Y) | (U = X)))) <=> member(U, unordered_pair(X, Y))))) | (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[21, 20])).
% 0.19/0.38 tff(23,plain,
% 0.19/0.38 (~(((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))),
% 0.19/0.38 inference(unit_resolution,[status(thm)],[22, 13])).
% 0.19/0.38 tff(24,plain,
% 0.19/0.38 (^[X: $i] : refl((singleton(X) = unordered_pair(X, X)) <=> (singleton(X) = unordered_pair(X, X)))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(25,plain,
% 0.19/0.38 (![X: $i] : (singleton(X) = unordered_pair(X, X)) <=> ![X: $i] : (singleton(X) = unordered_pair(X, X))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[24])).
% 0.19/0.38 tff(26,plain,
% 0.19/0.38 (![X: $i] : (singleton(X) = unordered_pair(X, X)) <=> ![X: $i] : (singleton(X) = unordered_pair(X, X))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(27,axiom,(![X: $i] : (singleton(X) = unordered_pair(X, X))), file('/export/starexec/sandbox/benchmark/Axioms/SET005+0.ax','singleton_set_defn')).
% 0.19/0.38 tff(28,plain,
% 0.19/0.38 (![X: $i] : (singleton(X) = unordered_pair(X, X))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[27, 26])).
% 0.19/0.38 tff(29,plain,(
% 0.19/0.38 ![X: $i] : (singleton(X) = unordered_pair(X, X))),
% 0.19/0.38 inference(skolemize,[status(sab)],[28])).
% 0.19/0.38 tff(30,plain,
% 0.19/0.38 (![X: $i] : (singleton(X) = unordered_pair(X, X))),
% 0.19/0.38 inference(modus_ponens,[status(thm)],[29, 25])).
% 0.19/0.38 tff(31,plain,
% 0.19/0.38 ((~![X: $i] : (singleton(X) = unordered_pair(X, X))) | (singleton(X!8) = unordered_pair(X!8, X!8))),
% 0.19/0.38 inference(quant_inst,[status(thm)],[])).
% 0.19/0.38 tff(32,plain,
% 0.19/0.38 (singleton(X!8) = unordered_pair(X!8, X!8)),
% 0.19/0.38 inference(unit_resolution,[status(thm)],[31, 30])).
% 0.19/0.38 tff(33,plain,
% 0.19/0.38 (unordered_pair(X!8, X!8) = singleton(X!8)),
% 0.19/0.38 inference(symmetry,[status(thm)],[32])).
% 0.19/0.38 tff(34,plain,
% 0.19/0.38 (member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))),
% 0.19/0.38 inference(monotonicity,[status(thm)],[33])).
% 0.19/0.38 tff(35,plain,
% 0.19/0.38 (member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8)) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))),
% 0.19/0.38 inference(symmetry,[status(thm)],[34])).
% 0.19/0.38 tff(36,plain,
% 0.19/0.38 (^[X: $i, Y: $i] : refl((~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))) <=> (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(37,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))) <=> ![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[36])).
% 0.19/0.38 tff(38,plain,
% 0.19/0.38 (^[X: $i, Y: $i] : rewrite((~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))) <=> (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(39,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))) <=> ![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[38])).
% 0.19/0.38 tff(40,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))) <=> ![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.38 inference(transitivity,[status(thm)],[39, 37])).
% 0.19/0.38 tff(41,plain,
% 0.19/0.38 (^[X: $i, Y: $i] : trans(monotonicity(rewrite(((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) <=> ((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))), rewrite((subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))) <=> (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))), ((((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))) <=> (((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))))), rewrite((((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))) <=> (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))), ((((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))) <=> (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(42,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y))))) <=> ![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.38 inference(quant_intro,[status(thm)],[41])).
% 0.19/0.38 tff(43,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y))) <=> ![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y)))),
% 0.19/0.38 inference(rewrite,[status(thm)],[])).
% 0.19/0.38 tff(44,plain,
% 0.19/0.38 (^[X: $i, Y: $i] : rewrite((subclass(X, Y) <=> ![U: $i] : (member(U, X) => member(U, Y))) <=> (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y))))),
% 0.19/0.38 inference(bind,[status(th)],[])).
% 0.19/0.38 tff(45,plain,
% 0.19/0.38 (![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : (member(U, X) => member(U, Y))) <=> ![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y)))),
% 0.19/0.39 inference(quant_intro,[status(thm)],[44])).
% 0.19/0.39 tff(46,axiom,(![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : (member(U, X) => member(U, Y)))), file('/export/starexec/sandbox/benchmark/Axioms/SET005+0.ax','subclass_defn')).
% 0.19/0.39 tff(47,plain,
% 0.19/0.39 (![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y)))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[46, 45])).
% 0.19/0.39 tff(48,plain,
% 0.19/0.39 (![X: $i, Y: $i] : (subclass(X, Y) <=> ![U: $i] : ((~member(U, X)) | member(U, Y)))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[47, 43])).
% 0.19/0.39 tff(49,plain,(
% 0.19/0.39 ![X: $i, Y: $i] : (((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y))) & (subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))),
% 0.19/0.39 inference(skolemize,[status(sab)],[48])).
% 0.19/0.39 tff(50,plain,
% 0.19/0.39 (![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[49, 42])).
% 0.19/0.39 tff(51,plain,
% 0.19/0.39 (![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[50, 40])).
% 0.19/0.39 tff(52,plain,
% 0.19/0.39 ((~![X: $i, Y: $i] : (~((~((~subclass(X, Y)) | ![U: $i] : ((~member(U, X)) | member(U, Y)))) | (~(subclass(X, Y) | (~((~member(tptp_fun_U_0(Y, X), X)) | member(tptp_fun_U_0(Y, X), Y)))))))) | (~((~((~subclass(singleton(X!8), Y!7)) | ![U: $i] : ((~member(U, singleton(X!8))) | member(U, Y!7)))) | (~(subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)))))))),
% 0.19/0.39 inference(quant_inst,[status(thm)],[])).
% 0.19/0.39 tff(53,plain,
% 0.19/0.39 (~((~((~subclass(singleton(X!8), Y!7)) | ![U: $i] : ((~member(U, singleton(X!8))) | member(U, Y!7)))) | (~(subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))))))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[52, 51])).
% 0.19/0.39 tff(54,plain,
% 0.19/0.39 (((~((~subclass(singleton(X!8), Y!7)) | ![U: $i] : ((~member(U, singleton(X!8))) | member(U, Y!7)))) | (~(subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)))))) | (subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))))),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(55,plain,
% 0.19/0.39 (subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[54, 53])).
% 0.19/0.39 tff(56,plain,
% 0.19/0.39 ((~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y))) <=> (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y)))),
% 0.19/0.39 inference(rewrite,[status(thm)],[])).
% 0.19/0.39 tff(57,plain,
% 0.19/0.39 ((~![X: $i, Y: $i] : (member(X, Y) => subclass(singleton(X), Y))) <=> (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y)))),
% 0.19/0.39 inference(rewrite,[status(thm)],[])).
% 0.19/0.39 tff(58,axiom,(~![X: $i, Y: $i] : (member(X, Y) => subclass(singleton(X), Y))), file('/export/starexec/sandbox/benchmark/theBenchmark.p','property_of_singletons2')).
% 0.19/0.39 tff(59,plain,
% 0.19/0.39 (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[58, 57])).
% 0.19/0.39 tff(60,plain,
% 0.19/0.39 (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[59, 56])).
% 0.19/0.39 tff(61,plain,
% 0.19/0.39 (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[60, 56])).
% 0.19/0.39 tff(62,plain,
% 0.19/0.39 (~![X: $i, Y: $i] : ((~member(X, Y)) | subclass(singleton(X), Y))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[61, 56])).
% 0.19/0.39 tff(63,plain,(
% 0.19/0.39 ~((~member(X!8, Y!7)) | subclass(singleton(X!8), Y!7))),
% 0.19/0.39 inference(skolemize,[status(sab)],[62])).
% 0.19/0.39 tff(64,plain,
% 0.19/0.39 (~subclass(singleton(X!8), Y!7)),
% 0.19/0.39 inference(or_elim,[status(thm)],[63])).
% 0.19/0.39 tff(65,plain,
% 0.19/0.39 ((~(subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))))) | subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)))),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(66,plain,
% 0.19/0.39 ((~(subclass(singleton(X!8), Y!7) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))))) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[65, 64])).
% 0.19/0.39 tff(67,plain,
% 0.19/0.39 (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[66, 55])).
% 0.19/0.39 tff(68,plain,
% 0.19/0.39 (((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)) | member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(69,plain,
% 0.19/0.39 (member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[68, 67])).
% 0.19/0.39 tff(70,plain,
% 0.19/0.39 (member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[69, 35])).
% 0.19/0.39 tff(71,plain,
% 0.19/0.39 ((((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8))) | (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))) | (~member(tptp_fun_U_0(Y!7, singleton(X!8)), unordered_pair(X!8, X!8)))),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(72,plain,
% 0.19/0.39 (~((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)))),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[71, 70, 23])).
% 0.19/0.39 tff(73,plain,
% 0.19/0.39 (((~member(tptp_fun_U_0(Y!7, singleton(X!8)), universal_class)) | (~(tptp_fun_U_0(Y!7, singleton(X!8)) = X!8))) | (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8)),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(74,plain,
% 0.19/0.39 (tptp_fun_U_0(Y!7, singleton(X!8)) = X!8),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[73, 72])).
% 0.19/0.39 tff(75,plain,
% 0.19/0.39 (member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7) <=> member(X!8, Y!7)),
% 0.19/0.39 inference(monotonicity,[status(thm)],[74])).
% 0.19/0.39 tff(76,plain,
% 0.19/0.39 (member(X!8, Y!7) <=> member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)),
% 0.19/0.39 inference(symmetry,[status(thm)],[75])).
% 0.19/0.39 tff(77,plain,
% 0.19/0.39 (member(X!8, Y!7)),
% 0.19/0.39 inference(or_elim,[status(thm)],[63])).
% 0.19/0.39 tff(78,plain,
% 0.19/0.39 (member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)),
% 0.19/0.39 inference(modus_ponens,[status(thm)],[77, 76])).
% 0.19/0.39 tff(79,plain,
% 0.19/0.39 (((~member(tptp_fun_U_0(Y!7, singleton(X!8)), singleton(X!8))) | member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)) | (~member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7))),
% 0.19/0.39 inference(tautology,[status(thm)],[])).
% 0.19/0.39 tff(80,plain,
% 0.19/0.39 (~member(tptp_fun_U_0(Y!7, singleton(X!8)), Y!7)),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[79, 67])).
% 0.19/0.39 tff(81,plain,
% 0.19/0.39 ($false),
% 0.19/0.39 inference(unit_resolution,[status(thm)],[80, 78])).
% 0.19/0.39 % SZS output end Proof
% 0.19/0.39 % E exiting
%------------------------------------------------------------------------------