%------------------------------------------------------------------------------
% File : Twee---2.7
% Problem : LAT196-1 : TPTP v9.3.1. Released v3.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n009.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Tue Sep 29 11:44:31 AM UTC 2026
% Result : Unsatisfiable 190.05s 24.48s
% Output : Proof 190.83s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : LAT196-1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.04 % Command : run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.38 % Computer : n009.cluster.edu
% 0.09/0.38 % Model : x86_64 x86_64
% 0.09/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.38 % Memory : 8046.5625MB
% 0.09/0.38 % OS : Linux 6.8.0-71-generic
% 0.09/0.38 % CPULimit : 300
% 0.09/0.38 % WCLimit : 300
% 0.09/0.38 % DateTime : Sun Sep 27 14:05:44 UTC 2026
% 0.09/0.38 % CPUTime :
% 0.09/0.38 Running run_twee /export/starexec/sandbox/benchmark/theBenchmark.p
% 190.05/24.48 Command-line arguments: --no-flatten-goal
% 190.05/24.48
% 190.05/24.48 % SZS status Unsatisfiable
% 190.05/24.48
% 190.83/24.52 % SZS output start Proof
% 190.83/24.52 Axiom 1 (commutativity_of_join): join(X, Y) = join(Y, X).
% 190.83/24.52 Axiom 2 (complement_join): join(X, complement(X)) = one.
% 190.83/24.52 Axiom 3 (commutativity_of_meet): meet(X, Y) = meet(Y, X).
% 190.83/24.52 Axiom 4 (complement_meet): meet(X, complement(X)) = zero.
% 190.83/24.52 Axiom 5 (ifeq_axiom): ifeq(X, X, Y, Z) = Y.
% 190.83/24.52 Axiom 6 (absorption2): join(X, meet(X, Y)) = X.
% 190.83/24.52 Axiom 7 (associativity_of_join): join(join(X, Y), Z) = join(X, join(Y, Z)).
% 190.83/24.52 Axiom 8 (absorption1): meet(X, join(X, Y)) = X.
% 190.83/24.52 Axiom 9 (associativity_of_meet): meet(meet(X, Y), Z) = meet(X, meet(Y, Z)).
% 190.83/24.52 Axiom 10 (equation_H39): meet(X, join(Y, meet(Z, join(X, W)))) = meet(X, join(Y, meet(Z, join(W, meet(X, Z))))).
% 190.83/24.52 Axiom 11 (meet_join_complement): ifeq(join(X, Y), one, ifeq(meet(X, Y), zero, complement(X), Y), Y) = Y.
% 190.83/24.52
% 190.83/24.52 Lemma 12: meet(X, one) = X.
% 190.83/24.52 Proof:
% 190.83/24.52 meet(X, one)
% 190.83/24.52 = { by axiom 2 (complement_join) R->L }
% 190.83/24.52 meet(X, join(X, complement(X)))
% 190.83/24.52 = { by axiom 8 (absorption1) }
% 190.83/24.52 X
% 190.83/24.52
% 190.83/24.52 Lemma 13: meet(one, X) = X.
% 190.83/24.52 Proof:
% 190.83/24.52 meet(one, X)
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.52 meet(X, one)
% 190.83/24.52 = { by lemma 12 }
% 190.83/24.52 X
% 190.83/24.52
% 190.83/24.52 Lemma 14: complement(one) = zero.
% 190.83/24.52 Proof:
% 190.83/24.52 complement(one)
% 190.83/24.52 = { by lemma 13 R->L }
% 190.83/24.52 meet(one, complement(one))
% 190.83/24.52 = { by axiom 4 (complement_meet) }
% 190.83/24.52 zero
% 190.83/24.52
% 190.83/24.52 Lemma 15: join(X, zero) = X.
% 190.83/24.52 Proof:
% 190.83/24.52 join(X, zero)
% 190.83/24.52 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.52 join(X, meet(X, complement(X)))
% 190.83/24.52 = { by axiom 6 (absorption2) }
% 190.83/24.52 X
% 190.83/24.52
% 190.83/24.52 Lemma 16: meet(X, zero) = zero.
% 190.83/24.52 Proof:
% 190.83/24.52 meet(X, zero)
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.52 meet(zero, X)
% 190.83/24.52 = { by lemma 15 R->L }
% 190.83/24.52 join(meet(zero, X), zero)
% 190.83/24.52 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.52 join(zero, meet(zero, X))
% 190.83/24.52 = { by axiom 6 (absorption2) }
% 190.83/24.52 zero
% 190.83/24.52
% 190.83/24.52 Lemma 17: join(X, one) = one.
% 190.83/24.52 Proof:
% 190.83/24.52 join(X, one)
% 190.83/24.52 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.52 join(one, X)
% 190.83/24.52 = { by lemma 13 R->L }
% 190.83/24.52 join(one, meet(one, X))
% 190.83/24.52 = { by axiom 6 (absorption2) }
% 190.83/24.52 one
% 190.83/24.52
% 190.83/24.52 Lemma 18: meet(X, meet(Y, Z)) = meet(Y, meet(X, Z)).
% 190.83/24.52 Proof:
% 190.83/24.52 meet(X, meet(Y, Z))
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.52 meet(meet(Y, Z), X)
% 190.83/24.52 = { by axiom 9 (associativity_of_meet) }
% 190.83/24.52 meet(Y, meet(Z, X))
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.52 meet(Y, meet(X, Z))
% 190.83/24.52
% 190.83/24.52 Lemma 19: join(X, join(Y, complement(X))) = one.
% 190.83/24.52 Proof:
% 190.83/24.52 join(X, join(Y, complement(X)))
% 190.83/24.52 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.52 join(X, join(complement(X), Y))
% 190.83/24.52 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.52 join(join(X, complement(X)), Y)
% 190.83/24.52 = { by axiom 2 (complement_join) }
% 190.83/24.52 join(one, Y)
% 190.83/24.52 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.52 join(Y, one)
% 190.83/24.52 = { by lemma 17 }
% 190.83/24.52 one
% 190.83/24.52
% 190.83/24.52 Lemma 20: meet(X, complement(complement(X))) = X.
% 190.83/24.52 Proof:
% 190.83/24.52 meet(X, complement(complement(X)))
% 190.83/24.52 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.52 meet(X, ifeq(zero, zero, complement(complement(X)), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.52 meet(X, ifeq(one, one, ifeq(zero, zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by lemma 19 R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(zero, zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(X, complement(X)), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), X), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 6 (absorption2) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(X, complement(complement(X))))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), X))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by lemma 15 R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), join(X, zero)))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), join(X, meet(complement(X), complement(complement(X))))))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.52 = { by axiom 10 (equation_H39) R->L }
% 190.83/24.52 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), join(complement(X), X)))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), join(X, complement(X))))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.53 = { by axiom 2 (complement_join) }
% 190.83/24.53 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, meet(complement(complement(X)), one))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.53 = { by lemma 12 }
% 190.83/24.53 meet(X, ifeq(join(complement(X), join(X, complement(complement(X)))), one, ifeq(meet(complement(X), join(X, complement(complement(X)))), zero, complement(complement(X)), join(X, complement(complement(X)))), join(X, complement(complement(X)))))
% 190.83/24.53 = { by axiom 11 (meet_join_complement) }
% 190.83/24.53 meet(X, join(X, complement(complement(X))))
% 190.83/24.53 = { by axiom 8 (absorption1) }
% 190.83/24.53 X
% 190.83/24.53
% 190.83/24.53 Lemma 21: join(X, meet(Y, X)) = X.
% 190.83/24.53 Proof:
% 190.83/24.53 join(X, meet(Y, X))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 join(X, meet(X, Y))
% 190.83/24.53 = { by axiom 6 (absorption2) }
% 190.83/24.53 X
% 190.83/24.53
% 190.83/24.53 Lemma 22: join(Y, join(X, Z)) = join(X, join(Y, Z)).
% 190.83/24.53 Proof:
% 190.83/24.53 join(Y, join(X, Z))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.53 join(join(X, Z), Y)
% 190.83/24.53 = { by axiom 7 (associativity_of_join) }
% 190.83/24.53 join(X, join(Z, Y))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 join(X, join(Y, Z))
% 190.83/24.53
% 190.83/24.53 Lemma 23: meet(X, meet(Y, join(X, Z))) = meet(X, Y).
% 190.83/24.53 Proof:
% 190.83/24.53 meet(X, meet(Y, join(X, Z)))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 meet(X, meet(join(X, Z), Y))
% 190.83/24.53 = { by axiom 9 (associativity_of_meet) R->L }
% 190.83/24.53 meet(meet(X, join(X, Z)), Y)
% 190.83/24.53 = { by axiom 8 (absorption1) }
% 190.83/24.53 meet(X, Y)
% 190.83/24.53
% 190.83/24.53 Lemma 24: meet(X, meet(join(X, Y), Z)) = meet(X, Z).
% 190.83/24.53 Proof:
% 190.83/24.53 meet(X, meet(join(X, Y), Z))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 meet(X, meet(Z, join(X, Y)))
% 190.83/24.53 = { by lemma 23 }
% 190.83/24.53 meet(X, Z)
% 190.83/24.53
% 190.83/24.53 Lemma 25: join(meet(X, Y), meet(X, join(Z, meet(X, Y)))) = meet(X, join(Z, meet(X, Y))).
% 190.83/24.53 Proof:
% 190.83/24.53 join(meet(X, Y), meet(X, join(Z, meet(X, Y))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 join(meet(Y, X), meet(X, join(Z, meet(X, Y))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 join(meet(Y, X), meet(X, join(Z, meet(Y, X))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(Y, X))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(X, Y))
% 190.83/24.53 = { by axiom 8 (absorption1) R->L }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(meet(X, Y), join(meet(X, Y), Z)))
% 190.83/24.53 = { by axiom 9 (associativity_of_meet) }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(X, meet(Y, join(meet(X, Y), Z))))
% 190.83/24.53 = { by lemma 18 }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(Y, meet(X, join(meet(X, Y), Z))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(Y, meet(X, join(Z, meet(X, Y)))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.53 join(meet(X, join(Z, meet(Y, X))), meet(Y, meet(X, join(Z, meet(Y, X)))))
% 190.83/24.53 = { by lemma 21 }
% 190.83/24.53 meet(X, join(Z, meet(Y, X)))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.53 meet(X, join(Z, meet(X, Y)))
% 190.83/24.53
% 190.83/24.53 Lemma 26: join(meet(X, Y), meet(X, join(meet(X, Y), Z))) = meet(X, join(Z, meet(X, Y))).
% 190.83/24.53 Proof:
% 190.83/24.53 join(meet(X, Y), meet(X, join(meet(X, Y), Z)))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.53 join(meet(X, Y), meet(X, join(Z, meet(X, Y))))
% 190.83/24.53 = { by lemma 25 }
% 190.83/24.53 meet(X, join(Z, meet(X, Y)))
% 190.83/24.53
% 190.83/24.53 Lemma 27: meet(X, join(Y, meet(Z, join(X, Y)))) = meet(X, join(Y, meet(X, Z))).
% 190.83/24.53 Proof:
% 190.83/24.53 meet(X, join(Y, meet(Z, join(X, Y))))
% 190.83/24.53 = { by axiom 10 (equation_H39) }
% 190.83/24.53 meet(X, join(Y, meet(Z, join(Y, meet(X, Z)))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 meet(X, join(Y, meet(Z, join(Y, meet(Z, X)))))
% 190.83/24.53 = { by lemma 25 R->L }
% 190.83/24.53 meet(X, join(Y, join(meet(Z, X), meet(Z, join(Y, meet(Z, X))))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.53 meet(X, join(Y, join(meet(Z, X), meet(Z, join(meet(Z, X), Y)))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 meet(X, join(Y, join(meet(Z, X), meet(join(meet(Z, X), Y), Z))))
% 190.83/24.53 = { by lemma 22 }
% 190.83/24.53 meet(X, join(meet(Z, X), join(Y, meet(join(meet(Z, X), Y), Z))))
% 190.83/24.53 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.53 meet(X, join(join(meet(Z, X), Y), meet(join(meet(Z, X), Y), Z)))
% 190.83/24.53 = { by axiom 6 (absorption2) }
% 190.83/24.53 meet(X, join(meet(Z, X), Y))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 meet(X, join(Y, meet(Z, X)))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.53 meet(X, join(Y, meet(X, Z)))
% 190.83/24.53
% 190.83/24.53 Lemma 28: meet(X, join(complement(X), meet(X, Y))) = meet(X, join(Y, complement(X))).
% 190.83/24.53 Proof:
% 190.83/24.53 meet(X, join(complement(X), meet(X, Y)))
% 190.83/24.53 = { by lemma 27 R->L }
% 190.83/24.53 meet(X, join(complement(X), meet(Y, join(X, complement(X)))))
% 190.83/24.53 = { by axiom 2 (complement_join) }
% 190.83/24.53 meet(X, join(complement(X), meet(Y, one)))
% 190.83/24.53 = { by lemma 12 }
% 190.83/24.53 meet(X, join(complement(X), Y))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 meet(X, join(Y, complement(X)))
% 190.83/24.53
% 190.83/24.53 Lemma 29: join(X, join(Y, meet(X, Z))) = join(X, Y).
% 190.83/24.53 Proof:
% 190.83/24.53 join(X, join(Y, meet(X, Z)))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.53 join(X, join(meet(X, Z), Y))
% 190.83/24.53 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.53 join(join(X, meet(X, Z)), Y)
% 190.83/24.53 = { by axiom 6 (absorption2) }
% 190.83/24.53 join(X, Y)
% 190.83/24.53
% 190.83/24.53 Lemma 30: join(X, join(Y, complement(join(X, Y)))) = one.
% 190.83/24.53 Proof:
% 190.83/24.53 join(X, join(Y, complement(join(X, Y))))
% 190.83/24.53 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.53 join(join(X, Y), complement(join(X, Y)))
% 190.83/24.53 = { by axiom 2 (complement_join) }
% 190.83/24.53 one
% 190.83/24.53
% 190.83/24.53 Lemma 31: join(meet(X, Y), complement(meet(X, join(Y, complement(X))))) = one.
% 190.83/24.53 Proof:
% 190.83/24.53 join(meet(X, Y), complement(meet(X, join(Y, complement(X)))))
% 190.83/24.53 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.53 join(meet(Y, X), complement(meet(X, join(Y, complement(X)))))
% 190.83/24.53 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(zero, zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(one, one, ifeq(zero, zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by lemma 19 R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(join(meet(X, join(Y, complement(X))), X)), complement(meet(X, join(Y, complement(X)))))), one, ifeq(zero, zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(zero, zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), complement(meet(X, join(Y, complement(X))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by lemma 15 R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), zero)), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by lemma 16 R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), meet(meet(X, join(Y, complement(X))), zero))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), meet(meet(X, join(Y, complement(X))), meet(join(meet(X, join(Y, complement(X))), X), complement(join(meet(X, join(Y, complement(X))), X)))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by lemma 24 }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), meet(meet(X, join(Y, complement(X))), complement(join(meet(X, join(Y, complement(X))), X))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), meet(meet(X, join(Y, complement(X))), complement(join(X, meet(X, join(Y, complement(X)))))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.53 = { by lemma 28 }
% 190.83/24.53 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(join(X, meet(X, join(Y, complement(X))))), complement(meet(X, join(Y, complement(X)))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(X, meet(X, join(Y, complement(X))))))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(meet(Y, X), ifeq(join(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), one, ifeq(meet(meet(X, join(Y, complement(X))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), zero, complement(meet(X, join(Y, complement(X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X)))))
% 190.83/24.54 = { by axiom 11 (meet_join_complement) }
% 190.83/24.54 join(meet(Y, X), join(complement(meet(X, join(Y, complement(X)))), complement(join(meet(X, join(Y, complement(X))), X))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(meet(Y, X), join(complement(meet(X, join(Y, complement(X)))), complement(join(X, meet(X, join(Y, complement(X)))))))
% 190.83/24.54 = { by axiom 6 (absorption2) }
% 190.83/24.54 join(meet(Y, X), join(complement(meet(X, join(Y, complement(X)))), complement(X)))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(meet(X, join(Y, complement(X))))))
% 190.83/24.54 = { by lemma 21 R->L }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(join(meet(X, join(Y, complement(X))), meet(Y, meet(X, join(Y, complement(X))))))))
% 190.83/24.54 = { by lemma 23 }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(join(meet(X, join(Y, complement(X))), meet(Y, X)))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(join(meet(Y, X), meet(X, join(Y, complement(X)))))))
% 190.83/24.54 = { by lemma 28 R->L }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(join(meet(Y, X), meet(X, join(complement(X), meet(X, Y)))))))
% 190.83/24.54 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.54 join(meet(Y, X), join(complement(X), complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X)))))))
% 190.83/24.54 = { by lemma 22 }
% 190.83/24.54 join(complement(X), join(meet(Y, X), complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X)))))))
% 190.83/24.54 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.54 join(join(complement(X), meet(Y, X)), complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X))))))
% 190.83/24.54 = { by lemma 29 R->L }
% 190.83/24.54 join(join(complement(X), meet(Y, X)), join(complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X))))), meet(join(complement(X), meet(Y, X)), X)))
% 190.83/24.54 = { by axiom 7 (associativity_of_join) }
% 190.83/24.54 join(complement(X), join(meet(Y, X), join(complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X))))), meet(join(complement(X), meet(Y, X)), X))))
% 190.83/24.54 = { by axiom 3 (commutativity_of_meet) }
% 190.83/24.54 join(complement(X), join(meet(Y, X), join(complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X))))), meet(X, join(complement(X), meet(Y, X))))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 join(complement(X), join(meet(Y, X), join(meet(X, join(complement(X), meet(Y, X))), complement(join(meet(Y, X), meet(X, join(complement(X), meet(Y, X))))))))
% 190.83/24.54 = { by lemma 30 }
% 190.83/24.54 join(complement(X), one)
% 190.83/24.54 = { by lemma 17 }
% 190.83/24.54 one
% 190.83/24.54
% 190.83/24.54 Lemma 32: meet(X, join(Y, join(Z, complement(X)))) = meet(X, join(Y, Z)).
% 190.83/24.54 Proof:
% 190.83/24.54 meet(X, join(Y, join(Z, complement(X))))
% 190.83/24.54 = { by lemma 22 }
% 190.83/24.54 meet(X, join(Z, join(Y, complement(X))))
% 190.83/24.54 = { by axiom 7 (associativity_of_join) R->L }
% 190.83/24.54 meet(X, join(join(Z, Y), complement(X)))
% 190.83/24.54 = { by lemma 20 R->L }
% 190.83/24.54 meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))
% 190.83/24.54 = { by axiom 11 (meet_join_complement) R->L }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(meet(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(meet(complement(meet(X, join(join(Z, Y), complement(X)))), meet(complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(X, join(join(Z, Y), complement(X))))), zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by axiom 9 (associativity_of_meet) R->L }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(meet(meet(complement(meet(X, join(join(Z, Y), complement(X)))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))), meet(X, join(join(Z, Y), complement(X)))), zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by axiom 4 (complement_meet) }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(meet(zero, meet(X, join(join(Z, Y), complement(X)))), zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(meet(meet(X, join(join(Z, Y), complement(X))), zero), zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by lemma 16 }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, ifeq(zero, zero, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by axiom 5 (ifeq_axiom) }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X))))))), one, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by lemma 20 }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(X, join(join(Z, Y), complement(X)))), one, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(meet(X, join(join(Z, Y), complement(X))), complement(complement(meet(X, join(join(Z, Y), complement(X)))))))
% 190.83/24.54 = { by lemma 20 }
% 190.83/24.54 ifeq(join(complement(meet(X, join(join(Z, Y), complement(X)))), meet(X, join(join(Z, Y), complement(X)))), one, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(X, join(join(Z, Y), complement(X))))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 ifeq(join(meet(X, join(join(Z, Y), complement(X))), complement(meet(X, join(join(Z, Y), complement(X))))), one, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(X, join(join(Z, Y), complement(X))))
% 190.83/24.54 = { by axiom 2 (complement_join) }
% 190.83/24.54 ifeq(one, one, complement(complement(meet(X, join(join(Z, Y), complement(X))))), meet(X, join(join(Z, Y), complement(X))))
% 190.83/24.54 = { by axiom 5 (ifeq_axiom) }
% 190.83/24.54 complement(complement(meet(X, join(join(Z, Y), complement(X)))))
% 190.83/24.54 = { by lemma 15 R->L }
% 190.83/24.54 complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), zero))
% 190.83/24.54 = { by lemma 14 R->L }
% 190.83/24.54 complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(one)))
% 190.83/24.54 = { by lemma 31 R->L }
% 190.83/24.54 complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))))
% 190.83/24.54 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.54 ifeq(zero, zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 16 R->L }
% 190.83/24.54 ifeq(meet(join(Z, Y), zero), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 4 (complement_meet) R->L }
% 190.83/24.54 ifeq(meet(join(Z, Y), meet(meet(X, join(join(Z, Y), complement(X))), complement(meet(X, join(join(Z, Y), complement(X)))))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 9 (associativity_of_meet) }
% 190.83/24.54 ifeq(meet(join(Z, Y), meet(X, meet(join(join(Z, Y), complement(X)), complement(meet(X, join(join(Z, Y), complement(X))))))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 18 }
% 190.83/24.54 ifeq(meet(X, meet(join(Z, Y), meet(join(join(Z, Y), complement(X)), complement(meet(X, join(join(Z, Y), complement(X))))))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 24 }
% 190.83/24.54 ifeq(meet(X, meet(join(Z, Y), complement(meet(X, join(join(Z, Y), complement(X)))))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 15 R->L }
% 190.83/24.54 ifeq(meet(X, meet(join(Z, Y), join(complement(meet(X, join(join(Z, Y), complement(X)))), zero))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 14 R->L }
% 190.83/24.54 ifeq(meet(X, meet(join(Z, Y), join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(one)))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 9 (associativity_of_meet) R->L }
% 190.83/24.54 ifeq(meet(meet(X, join(Z, Y)), join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(one))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 31 R->L }
% 190.83/24.54 ifeq(meet(meet(X, join(Z, Y)), join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.54 ifeq(meet(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))), meet(X, join(Z, Y))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 5 (ifeq_axiom) R->L }
% 190.83/24.54 ifeq(one, one, ifeq(meet(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))), meet(X, join(Z, Y))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by lemma 30 R->L }
% 190.83/24.54 ifeq(join(meet(X, join(Z, Y)), join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), one, ifeq(meet(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))), meet(X, join(Z, Y))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.54 ifeq(join(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))), meet(X, join(Z, Y))), one, ifeq(meet(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X))))))), meet(X, join(Z, Y))), zero, complement(join(complement(meet(X, join(join(Z, Y), complement(X)))), complement(join(meet(X, join(Z, Y)), complement(meet(X, join(join(Z, Y), complement(X)))))))), meet(X, join(Z, Y))), meet(X, join(Z, Y)))
% 190.83/24.54 = { by axiom 11 (meet_join_complement) }
% 190.83/24.54 meet(X, join(Z, Y))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 meet(X, join(Y, Z))
% 190.83/24.54
% 190.83/24.54 Lemma 33: meet(X, join(Y, meet(X, Z))) = meet(X, join(Y, Z)).
% 190.83/24.54 Proof:
% 190.83/24.54 meet(X, join(Y, meet(X, Z)))
% 190.83/24.54 = { by lemma 26 R->L }
% 190.83/24.54 join(meet(X, Z), meet(X, join(meet(X, Z), Y)))
% 190.83/24.54 = { by lemma 32 R->L }
% 190.83/24.54 join(meet(X, Z), meet(X, join(meet(X, Z), join(Y, complement(X)))))
% 190.83/24.54 = { by lemma 26 }
% 190.83/24.54 meet(X, join(join(Y, complement(X)), meet(X, Z)))
% 190.83/24.54 = { by lemma 27 R->L }
% 190.83/24.54 meet(X, join(join(Y, complement(X)), meet(Z, join(X, join(Y, complement(X))))))
% 190.83/24.54 = { by lemma 19 }
% 190.83/24.54 meet(X, join(join(Y, complement(X)), meet(Z, one)))
% 190.83/24.54 = { by axiom 7 (associativity_of_join) }
% 190.83/24.54 meet(X, join(Y, join(complement(X), meet(Z, one))))
% 190.83/24.54 = { by lemma 12 }
% 190.83/24.54 meet(X, join(Y, join(complement(X), Z)))
% 190.83/24.54 = { by axiom 1 (commutativity_of_join) }
% 190.83/24.54 meet(X, join(Y, join(Z, complement(X))))
% 190.83/24.54 = { by lemma 32 }
% 190.83/24.54 meet(X, join(Y, Z))
% 190.83/24.54
% 190.83/24.54 Goal 1 (prove_distributivity): meet(a, join(b, c)) = join(meet(a, b), meet(a, c)).
% 190.83/24.54 Proof:
% 190.83/24.54 meet(a, join(b, c))
% 190.83/24.54 = { by lemma 33 R->L }
% 190.83/24.55 meet(a, join(b, meet(a, c)))
% 190.83/24.55 = { by lemma 26 R->L }
% 190.83/24.55 join(meet(a, c), meet(a, join(meet(a, c), b)))
% 190.83/24.55 = { by lemma 33 R->L }
% 190.83/24.55 join(meet(a, c), meet(a, join(meet(a, c), meet(a, b))))
% 190.83/24.55 = { by lemma 26 }
% 190.83/24.55 meet(a, join(meet(a, b), meet(a, c)))
% 190.83/24.55 = { by axiom 6 (absorption2) R->L }
% 190.83/24.55 meet(join(a, meet(a, b)), join(meet(a, b), meet(a, c)))
% 190.83/24.55 = { by axiom 3 (commutativity_of_meet) R->L }
% 190.83/24.55 meet(join(meet(a, b), meet(a, c)), join(a, meet(a, b)))
% 190.83/24.55 = { by lemma 29 R->L }
% 190.83/24.55 meet(join(meet(a, b), meet(a, c)), join(a, join(meet(a, b), meet(a, c))))
% 190.83/24.55 = { by axiom 1 (commutativity_of_join) R->L }
% 190.83/24.55 meet(join(meet(a, b), meet(a, c)), join(join(meet(a, b), meet(a, c)), a))
% 190.83/24.55 = { by axiom 8 (absorption1) }
% 190.83/24.55 join(meet(a, b), meet(a, c))
% 190.83/24.55 % SZS output end Proof
% 190.83/24.55
% 190.83/24.55 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------