TSTP Solution File: GRP507-1 by Twee---2.5.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Twee---2.5.0
% Problem  : GRP507-1 : TPTP v8.2.0. Released v2.6.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : parallel-twee /export/starexec/sandbox/benchmark/theBenchmark.p --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding

% Computer : n032.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 : Mon Jun 24 07:12:36 EDT 2024

% Result   : Unsatisfiable 8.50s 1.40s
% Output   : Proof 11.51s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.09  % Problem  : GRP507-1 : TPTP v8.2.0. Released v2.6.0.
% 0.07/0.09  % Command  : parallel-twee /export/starexec/sandbox/benchmark/theBenchmark.p --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding
% 0.08/0.28  % Computer : n032.cluster.edu
% 0.08/0.28  % Model    : x86_64 x86_64
% 0.08/0.28  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.28  % Memory   : 8042.1875MB
% 0.08/0.28  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.08/0.28  % CPULimit : 300
% 0.08/0.28  % WCLimit  : 300
% 0.08/0.28  % DateTime : Thu Jun 20 08:08:53 EDT 2024
% 0.08/0.28  % CPUTime  : 
% 8.50/1.40  Command-line arguments: --no-flatten-goal
% 8.50/1.40  
% 8.50/1.40  % SZS status Unsatisfiable
% 8.50/1.40  
% 11.06/1.70  % SZS output start Proof
% 11.06/1.70  Axiom 1 (single_axiom): multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(U)), inverse(W))))))), U) = V.
% 11.06/1.70  
% 11.06/1.70  Lemma 2: inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(W))))))) = multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(V, inverse(Y2))))))), U).
% 11.06/1.70  Proof:
% 11.06/1.70    inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(W)))))))
% 11.06/1.70  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.70    multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(W))))))), inverse(U)), inverse(Y2))))))), U)
% 11.06/1.70  = { by axiom 1 (single_axiom) }
% 11.06/1.70    multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(V, inverse(Y2))))))), U)
% 11.06/1.70  
% 11.06/1.70  Lemma 3: multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U), inverse(U)) = V.
% 11.06/1.70  Proof:
% 11.06/1.71    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U), inverse(U))
% 11.06/1.71  = { by lemma 2 R->L }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(Y2))))))), inverse(U))
% 11.06/1.71  = { by axiom 1 (single_axiom) }
% 11.06/1.71    V
% 11.06/1.71  
% 11.06/1.71  Lemma 4: multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U) = multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, U)), multiply(X2, inverse(V))))), Y2), inverse(Y2)).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U)
% 11.06/1.71  = { by lemma 2 R->L }
% 11.06/1.71    inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(U2)))))))
% 11.06/1.71  = { by lemma 3 R->L }
% 11.06/1.71    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, U)), multiply(X2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(U2))))))), inverse(U))))))), Y2), inverse(Y2))
% 11.06/1.71  = { by axiom 1 (single_axiom) }
% 11.06/1.71    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, U)), multiply(X2, inverse(V))))), Y2), inverse(Y2))
% 11.06/1.71  
% 11.06/1.71  Lemma 5: multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(V))))), U), inverse(U)), inverse(W)) = V.
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(V))))), U), inverse(U)), inverse(W))
% 11.06/1.71  = { by lemma 4 R->L }
% 11.06/1.71    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(V, inverse(Y2))))))), W), inverse(W))
% 11.06/1.71  = { by lemma 3 }
% 11.06/1.71    V
% 11.06/1.71  
% 11.06/1.71  Lemma 6: multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U), T), inverse(T)) = multiply(V, inverse(inverse(U))).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(V, inverse(W))))))), U), T), inverse(T))
% 11.06/1.71  = { by lemma 2 R->L }
% 11.06/1.71    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(V, inverse(inverse(U))), inverse(Z2))))))), T), inverse(T))
% 11.06/1.71  = { by lemma 3 }
% 11.06/1.71    multiply(V, inverse(inverse(U)))
% 11.06/1.71  
% 11.06/1.71  Lemma 7: multiply(multiply(X, Z), inverse(Z)) = multiply(multiply(X, Y), inverse(Y)).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(multiply(X, Z), inverse(Z))
% 11.06/1.71  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(multiply(X, inverse(S)), inverse(W2))))))), S), Z), inverse(Z))
% 11.06/1.71  = { by lemma 6 }
% 11.06/1.71    multiply(multiply(X, inverse(S)), inverse(inverse(S)))
% 11.06/1.71  = { by lemma 6 R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(X, inverse(S)), inverse(T))))))), S), Y), inverse(Y))
% 11.06/1.71  = { by axiom 1 (single_axiom) }
% 11.06/1.71    multiply(multiply(X, Y), inverse(Y))
% 11.06/1.71  
% 11.06/1.71  Lemma 8: multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(U)), inverse(W))))))), U) = inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(multiply(V, Z2), inverse(Z2)), inverse(Y2))))))).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(V, inverse(U)), inverse(W))))))), U)
% 11.06/1.71  = { by lemma 2 R->L }
% 11.06/1.71    inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(multiply(V, inverse(U)), inverse(inverse(U))), inverse(Y2)))))))
% 11.06/1.71  = { by lemma 7 R->L }
% 11.06/1.71    inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(multiply(V, Z2), inverse(Z2)), inverse(Y2)))))))
% 11.06/1.71  
% 11.06/1.71  Lemma 9: inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(multiply(V, U), inverse(U)), inverse(W))))))) = V.
% 11.06/1.71  Proof:
% 11.06/1.71    inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(multiply(V, U), inverse(U)), inverse(W)))))))
% 11.06/1.71  = { by lemma 8 R->L }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(V, inverse(Z2)), inverse(Y2))))))), Z2)
% 11.06/1.71  = { by axiom 1 (single_axiom) }
% 11.06/1.71    V
% 11.06/1.71  
% 11.06/1.71  Lemma 10: multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, W)), multiply(S, inverse(V)))) = multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(V)))).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, W)), multiply(S, inverse(V))))
% 11.06/1.71  = { by lemma 5 R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, W)), multiply(S, inverse(V))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by lemma 5 R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, W)), multiply(S, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, W)), multiply(S2, inverse(V))))), X3), inverse(X3)), inverse(W))))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, W)), multiply(S, inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y3, Z3)), multiply(Z3, Y3))), multiply(inverse(multiply(W3, V3)), multiply(W3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, W)), multiply(S2, inverse(V))))), X3), inverse(X3)), inverse(inverse(inverse(U3)))), inverse(V3))))))), inverse(inverse(U3))), inverse(W))))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by lemma 2 }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, multiply(inverse(multiply(inverse(multiply(inverse(multiply(T3, S3)), multiply(S3, T3))), multiply(inverse(multiply(X4, Y4)), multiply(X4, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y3, Z3)), multiply(Z3, Y3))), multiply(inverse(multiply(W3, V3)), multiply(W3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, W)), multiply(S2, inverse(V))))), X3), inverse(X3)), inverse(inverse(inverse(U3)))), inverse(V3))))))), inverse(Y4))))))), U3))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by lemma 2 R->L }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y3, Z3)), multiply(Z3, Y3))), multiply(inverse(multiply(W3, V3)), multiply(W3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, W)), multiply(S2, inverse(V))))), X3), inverse(X3)), inverse(inverse(inverse(U3)))), inverse(V3))))))), inverse(inverse(U3))), inverse(W))))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by axiom 1 (single_axiom) }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, W)), multiply(S2, inverse(V))))), X3), inverse(X3)), inverse(W))))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by lemma 5 }
% 11.06/1.71    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(V))))))))), V2), inverse(V2)), inverse(W2))
% 11.06/1.71  = { by lemma 5 }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(V))))
% 11.06/1.71  
% 11.06/1.71  Lemma 11: multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(multiply(Z, W), V)), multiply(multiply(Z, U), inverse(U)))) = multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, V)), multiply(X2, inverse(W)))).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(multiply(Z, W), V)), multiply(multiply(Z, U), inverse(U))))
% 11.06/1.71  = { by lemma 7 }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(multiply(Z, W), V)), multiply(multiply(Z, W), inverse(W))))
% 11.06/1.71  = { by lemma 10 R->L }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, V)), multiply(X2, inverse(W))))
% 11.06/1.71  
% 11.06/1.71  Lemma 12: multiply(multiply(X, multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, V)), multiply(W, inverse(multiply(multiply(multiply(U, T), inverse(T)), inverse(V))))))), U) = multiply(multiply(X, S), inverse(S)).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(multiply(X, multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, V)), multiply(W, inverse(multiply(multiply(multiply(U, T), inverse(T)), inverse(V))))))), U)
% 11.06/1.71  = { by lemma 9 R->L }
% 11.06/1.71    multiply(multiply(X, multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, V)), multiply(W, inverse(multiply(multiply(multiply(U, T), inverse(T)), inverse(V))))))), inverse(multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, V)), multiply(W, inverse(multiply(multiply(multiply(U, T), inverse(T)), inverse(V))))))))
% 11.06/1.71  = { by lemma 7 R->L }
% 11.06/1.71    multiply(multiply(X, S), inverse(S))
% 11.06/1.71  
% 11.06/1.71  Lemma 13: multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(U), U)) = multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(Z), Z)).
% 11.06/1.71  Proof:
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(U), U))
% 11.06/1.71  = { by lemma 3 R->L }
% 11.06/1.71    multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(U), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z3, W3)), multiply(W3, Z3))), multiply(inverse(multiply(V3, U3)), multiply(V3, inverse(multiply(U, inverse(U3))))))), X3), inverse(X3))))
% 11.06/1.72  = { by lemma 3 R->L }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z3, W3)), multiply(W3, Z3))), multiply(inverse(multiply(V3, U3)), multiply(V3, inverse(multiply(U, inverse(U3))))))), X3), inverse(X3))), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z3, W3)), multiply(W3, Z3))), multiply(inverse(multiply(V3, U3)), multiply(V3, inverse(multiply(U, inverse(U3))))))), X3), inverse(X3))))
% 11.06/1.72  = { by lemma 9 R->L }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z3, W3)), multiply(W3, Z3))), multiply(inverse(multiply(V3, U3)), multiply(V3, inverse(multiply(U, inverse(U3))))))), X3), inverse(X3))), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z3, W3)), multiply(W3, Z3))), multiply(inverse(multiply(V3, U3)), multiply(V3, inverse(multiply(U, inverse(U3))))))), X3), inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(X3), Y3), inverse(Y3)), inverse(S2))))))))))
% 11.06/1.72  = { by lemma 11 R->L }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(Z, inverse(Y2))))))), multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(X3), Y3), inverse(Y3)), inverse(S2))))))), inverse(X3))), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(Z, inverse(Y2))))))), Z2), inverse(Z2))))
% 11.06/1.72  = { by lemma 12 }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(Z, inverse(Y2))))))), W2), inverse(W2))), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(Z, inverse(Y2))))))), Z2), inverse(Z2))))
% 11.06/1.72  = { by lemma 3 }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(Z), multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(Z, inverse(Y2))))))), Z2), inverse(Z2))))
% 11.06/1.72  = { by lemma 3 }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(Z), Z))
% 11.06/1.72  
% 11.06/1.72  Lemma 14: multiply(inverse(Y), Y) = multiply(inverse(X), X).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(inverse(Y), Y)
% 11.06/1.72  = { by lemma 5 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, T)), multiply(Z2, inverse(multiply(inverse(Y), Y)))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 11 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(Y), Y)), T)), multiply(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(X), X)), inverse(multiply(inverse(X), X)))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 13 }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(X), X)), T)), multiply(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(X), X)), inverse(multiply(inverse(X), X)))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 5 }
% 11.06/1.72    multiply(inverse(X), X)
% 11.06/1.72  
% 11.06/1.72  Lemma 15: multiply(inverse(multiply(inverse(Z), Z)), multiply(inverse(W), W)) = multiply(inverse(multiply(inverse(X), X)), multiply(inverse(Y), Y)).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(inverse(multiply(inverse(Z), Z)), multiply(inverse(W), W))
% 11.06/1.72  = { by lemma 14 }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(U, U)), multiply(U, U))), multiply(inverse(W), W))
% 11.06/1.72  = { by lemma 13 }
% 11.06/1.72    multiply(inverse(multiply(inverse(multiply(V, V)), multiply(V, V))), multiply(inverse(Y), Y))
% 11.06/1.72  = { by lemma 14 R->L }
% 11.06/1.72    multiply(inverse(multiply(inverse(X), X)), multiply(inverse(Y), Y))
% 11.06/1.72  
% 11.06/1.72  Lemma 16: multiply(multiply(inverse(multiply(inverse(X), X)), multiply(inverse(Y), Y)), inverse(multiply(inverse(Z), Z))) = multiply(multiply(inverse(multiply(inverse(W), W)), V), inverse(V)).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(multiply(inverse(multiply(inverse(X), X)), multiply(inverse(Y), Y)), inverse(multiply(inverse(Z), Z)))
% 11.06/1.72  = { by lemma 15 }
% 11.06/1.72    multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(Z), Z)), inverse(multiply(inverse(Z), Z)))
% 11.06/1.72  = { by lemma 7 R->L }
% 11.06/1.72    multiply(multiply(inverse(multiply(inverse(W), W)), V), inverse(V))
% 11.06/1.72  
% 11.06/1.72  Lemma 17: inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))) = inverse(multiply(inverse(Z), Z)).
% 11.06/1.72  Proof:
% 11.06/1.72    inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X)))
% 11.06/1.72  = { by lemma 9 R->L }
% 11.06/1.72    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(S), S)), inverse(multiply(inverse(S), S))), inverse(T)))))))
% 11.06/1.72  = { by lemma 13 R->L }
% 11.06/1.72    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(X2, X2)), multiply(X2, X2))), multiply(inverse(Y2), Y2)), inverse(multiply(inverse(S), S))), inverse(T)))))))
% 11.06/1.72  = { by lemma 16 }
% 11.06/1.72    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(inverse(multiply(inverse(Z), Z)), Z2), inverse(Z2)), inverse(T)))))))
% 11.06/1.72  = { by lemma 9 }
% 11.06/1.72    inverse(multiply(inverse(Z), Z))
% 11.06/1.72  
% 11.06/1.72  Lemma 18: multiply(inverse(multiply(X, Y)), multiply(Y, X)) = multiply(inverse(Z), Z).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(inverse(multiply(X, Y)), multiply(Y, X))
% 11.06/1.72  = { by lemma 5 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 17 }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(inverse(Z), Z)))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 5 }
% 11.06/1.72    multiply(inverse(Z), Z)
% 11.06/1.72  
% 11.06/1.72  Lemma 19: multiply(multiply(inverse(multiply(X, Y)), Z), inverse(Z)) = multiply(multiply(inverse(W), W), inverse(multiply(Y, X))).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(multiply(inverse(multiply(X, Y)), Z), inverse(Z))
% 11.06/1.72  = { by lemma 7 }
% 11.06/1.72    multiply(multiply(inverse(multiply(X, Y)), multiply(Y, X)), inverse(multiply(Y, X)))
% 11.06/1.72  = { by lemma 18 }
% 11.06/1.72    multiply(multiply(inverse(W), W), inverse(multiply(Y, X)))
% 11.06/1.72  
% 11.06/1.72  Lemma 20: multiply(multiply(multiply(inverse(X), X), inverse(multiply(Y, Z))), inverse(inverse(W))) = multiply(multiply(multiply(inverse(multiply(Z, Y)), W), V), inverse(V)).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(multiply(multiply(inverse(X), X), inverse(multiply(Y, Z))), inverse(inverse(W)))
% 11.06/1.72  = { by lemma 19 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(Z, Y)), W), inverse(W)), inverse(inverse(W)))
% 11.06/1.72  = { by lemma 7 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(Z, Y)), W), V), inverse(V))
% 11.06/1.72  
% 11.06/1.72  Lemma 21: multiply(inverse(Z), multiply(Y, Z)) = multiply(inverse(X), multiply(Y, X)).
% 11.06/1.72  Proof:
% 11.06/1.72    multiply(inverse(Z), multiply(Y, Z))
% 11.06/1.72  = { by lemma 5 R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(inverse(Z), multiply(Y, Z))))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.72    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(multiply(inverse(multiply(inverse(Z), multiply(Y, Z))), inverse(V2)), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.72  = { by lemma 9 R->L }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, X3)), multiply(S2, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(Z), multiply(Y, Z))), inverse(V2)), W3), inverse(W3)), inverse(X3))))))), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by lemma 20 R->L }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, X3)), multiply(S2, inverse(multiply(multiply(multiply(multiply(inverse(Z3), Z3), inverse(multiply(multiply(Y, Z), inverse(Z)))), inverse(inverse(inverse(V2)))), inverse(X3))))))), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by lemma 7 }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, X3)), multiply(S2, inverse(multiply(multiply(multiply(multiply(inverse(Z3), Z3), inverse(multiply(multiply(Y, X), inverse(X)))), inverse(inverse(inverse(V2)))), inverse(X3))))))), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by lemma 20 }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U2, T2)), multiply(T2, U2))), multiply(inverse(multiply(S2, X3)), multiply(S2, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(X), multiply(Y, X))), inverse(V2)), Y3), inverse(Y3)), inverse(X3))))))), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by lemma 9 }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, multiply(inverse(multiply(inverse(multiply(inverse(multiply(X2, Y2)), multiply(Y2, X2))), multiply(inverse(multiply(Z2, W2)), multiply(Z2, inverse(multiply(multiply(inverse(multiply(inverse(X), multiply(Y, X))), inverse(V2)), inverse(W2))))))), V2))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by axiom 1 (single_axiom) }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(inverse(X), multiply(Y, X))))))), S), inverse(S)), inverse(T))
% 11.06/1.73  = { by lemma 5 }
% 11.06/1.73    multiply(inverse(X), multiply(Y, X))
% 11.06/1.73  
% 11.06/1.73  Lemma 22: multiply(multiply(inverse(multiply(inverse(multiply(X, inverse(X))), multiply(inverse(Y), Y))), Z), inverse(Z)) = multiply(multiply(inverse(multiply(inverse(W), W)), V), inverse(V)).
% 11.06/1.73  Proof:
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(multiply(X, inverse(X))), multiply(inverse(Y), Y))), Z), inverse(Z))
% 11.06/1.73  = { by lemma 7 }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(multiply(X, inverse(X))), multiply(inverse(Y), Y))), multiply(inverse(U), U)), inverse(multiply(inverse(U), U)))
% 11.06/1.73  = { by lemma 14 }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(multiply(X, inverse(X))), multiply(inverse(X), X))), multiply(inverse(U), U)), inverse(multiply(inverse(U), U)))
% 11.06/1.73  = { by lemma 13 R->L }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(multiply(T, T)), multiply(T, T))), multiply(inverse(S), S)), inverse(multiply(inverse(U), U)))
% 11.06/1.73  = { by lemma 16 }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(W), W)), V), inverse(V))
% 11.06/1.73  
% 11.06/1.73  Lemma 23: multiply(inverse(X), multiply(inverse(multiply(inverse(Y), Y)), X)) = multiply(inverse(Z), Z).
% 11.06/1.73  Proof:
% 11.06/1.73    multiply(inverse(X), multiply(inverse(multiply(inverse(Y), Y)), X))
% 11.06/1.73  = { by lemma 21 }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(inverse(multiply(inverse(Y), Y)), multiply(W, inverse(W))))
% 11.06/1.73  = { by lemma 5 R->L }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(multiply(T, S)), multiply(T, inverse(multiply(inverse(multiply(inverse(Y), Y)), multiply(W, inverse(W)))))))), X2), inverse(X2)), inverse(S)))
% 11.06/1.73  = { by lemma 9 R->L }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(multiply(T, S)), multiply(T, inverse(multiply(inverse(multiply(inverse(multiply(Y2, Z2)), multiply(Z2, Y2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(Y), Y)), multiply(W, inverse(W)))), multiply(inverse(U2), U2)), inverse(multiply(inverse(U2), U2))), inverse(V2))))))))))), X2), inverse(X2)), inverse(S)))
% 11.06/1.73  = { by lemma 14 }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(multiply(T, S)), multiply(T, inverse(multiply(inverse(multiply(inverse(multiply(Y2, Z2)), multiply(Z2, Y2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(W), W)), multiply(W, inverse(W)))), multiply(inverse(U2), U2)), inverse(multiply(inverse(U2), U2))), inverse(V2))))))))))), X2), inverse(X2)), inverse(S)))
% 11.06/1.73  = { by lemma 13 R->L }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(multiply(T, S)), multiply(T, inverse(multiply(inverse(multiply(inverse(multiply(Y2, Z2)), multiply(Z2, Y2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(T2, T2)), multiply(T2, T2))), multiply(inverse(U2), U2)), inverse(multiply(inverse(U2), U2))), inverse(V2))))))))))), X2), inverse(X2)), inverse(S)))
% 11.06/1.73  = { by lemma 9 }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, U)), multiply(U, V))), multiply(inverse(multiply(T, S)), multiply(T, inverse(multiply(inverse(multiply(T2, T2)), multiply(T2, T2))))))), X2), inverse(X2)), inverse(S)))
% 11.06/1.73  = { by lemma 5 }
% 11.06/1.73    multiply(inverse(multiply(W, inverse(W))), multiply(inverse(multiply(T2, T2)), multiply(T2, T2)))
% 11.06/1.73  = { by lemma 5 R->L }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(inverse(multiply(W, inverse(W))), multiply(inverse(multiply(T2, T2)), multiply(T2, T2)))))))), W3), inverse(W3)), inverse(Z3))
% 11.06/1.73  = { by lemma 9 R->L }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(inverse(multiply(inverse(multiply(V3, U3)), multiply(U3, V3))), multiply(inverse(multiply(T3, S3)), multiply(T3, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(W, inverse(W))), multiply(inverse(multiply(T2, T2)), multiply(T2, T2)))), X4), inverse(X4)), inverse(S3))))))))))), W3), inverse(W3)), inverse(Z3))
% 11.06/1.73  = { by lemma 22 }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(inverse(multiply(inverse(multiply(V3, U3)), multiply(U3, V3))), multiply(inverse(multiply(T3, S3)), multiply(T3, inverse(multiply(multiply(multiply(inverse(multiply(inverse(Z), Z)), Y4), inverse(Y4)), inverse(S3))))))))))), W3), inverse(W3)), inverse(Z3))
% 11.06/1.73  = { by lemma 9 }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(inverse(Z), Z)))))), W3), inverse(W3)), inverse(Z3))
% 11.06/1.73  = { by lemma 5 }
% 11.06/1.73    multiply(inverse(Z), Z)
% 11.06/1.73  
% 11.06/1.73  Lemma 24: multiply(multiply(inverse(X), X), inverse(multiply(Y, inverse(Y)))) = multiply(Z, inverse(Z)).
% 11.06/1.73  Proof:
% 11.06/1.73    multiply(multiply(inverse(X), X), inverse(multiply(Y, inverse(Y))))
% 11.06/1.73  = { by lemma 19 R->L }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(Y), Y)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))
% 11.06/1.73  = { by lemma 15 }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(V), V)), multiply(inverse(multiply(inverse(V), V)), multiply(inverse(V), V))), inverse(multiply(inverse(W), W)))
% 11.06/1.73  = { by lemma 23 }
% 11.06/1.73    multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))
% 11.06/1.73  = { by lemma 5 R->L }
% 11.06/1.73    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, inverse(multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.73  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(multiply(inverse(multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))), inverse(T2)), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 9 R->L }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))), inverse(T2)), W3), inverse(W3)), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 20 R->L }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(V3), V3), inverse(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W))))), inverse(inverse(inverse(T2)))), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 18 R->L }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)), inverse(multiply(inverse(W), W)))), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)))), inverse(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W))))), inverse(inverse(inverse(T2)))), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 19 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(multiply(inverse(W), W), inverse(multiply(W, inverse(W))))), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W)))), inverse(multiply(inverse(multiply(inverse(W), W)), multiply(inverse(multiply(inverse(W), W)), multiply(inverse(W), W))))), inverse(inverse(inverse(T2)))), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 19 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(U3), U3), inverse(multiply(inverse(multiply(W, inverse(W))), multiply(inverse(W), W)))), inverse(inverse(inverse(T2)))), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 17 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(U3), U3), inverse(multiply(inverse(Z), Z))), inverse(inverse(inverse(T2)))), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 20 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(S2, X3)), multiply(X3, S2))), multiply(inverse(multiply(Y3, Z3)), multiply(Y3, inverse(multiply(multiply(multiply(multiply(inverse(multiply(Z, inverse(Z))), inverse(T2)), T3), inverse(T3)), inverse(Z3))))))), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 9 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, W2)), multiply(W2, Z2))), multiply(inverse(multiply(V2, U2)), multiply(V2, inverse(multiply(multiply(inverse(multiply(Z, inverse(Z))), inverse(T2)), inverse(U2))))))), T2))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by axiom 1 (single_axiom) }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, T)), multiply(T, U))), multiply(inverse(multiply(S, X2)), multiply(S, inverse(multiply(Z, inverse(Z))))))), Y2), inverse(Y2)), inverse(X2))
% 11.06/1.74  = { by lemma 5 }
% 11.06/1.74    multiply(Z, inverse(Z))
% 11.06/1.74  
% 11.06/1.74  Lemma 25: multiply(inverse(multiply(inverse(X), X)), Y) = multiply(inverse(multiply(Z, inverse(Z))), Y).
% 11.06/1.74  Proof:
% 11.06/1.74    multiply(inverse(multiply(inverse(X), X)), Y)
% 11.06/1.74  = { by lemma 9 R->L }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(multiply(inverse(multiply(inverse(X), X)), Y), S), inverse(S)), inverse(T)))))))
% 11.06/1.74  = { by lemma 20 R->L }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(multiply(inverse(X2), X2), inverse(multiply(X, inverse(X)))), inverse(inverse(Y))), inverse(T)))))))
% 11.06/1.74  = { by lemma 24 }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(multiply(inverse(Z), Z), inverse(multiply(inverse(Z), Z))), inverse(inverse(Y))), inverse(T)))))))
% 11.06/1.74  = { by lemma 20 }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(W, V)), multiply(V, W))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(multiply(multiply(multiply(inverse(multiply(Z, inverse(Z))), Y), Y2), inverse(Y2)), inverse(T)))))))
% 11.06/1.74  = { by lemma 9 }
% 11.06/1.74    multiply(inverse(multiply(Z, inverse(Z))), Y)
% 11.06/1.74  
% 11.06/1.74  Lemma 26: inverse(multiply(inverse(X), X)) = inverse(multiply(Y, inverse(Y))).
% 11.06/1.74  Proof:
% 11.06/1.74    inverse(multiply(inverse(X), X))
% 11.06/1.74  = { by lemma 9 R->L }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(multiply(multiply(inverse(multiply(inverse(X), X)), T), inverse(T)), inverse(U)))))))
% 11.06/1.74  = { by lemma 25 }
% 11.06/1.74    inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(multiply(multiply(inverse(multiply(Y, inverse(Y))), T), inverse(T)), inverse(U)))))))
% 11.06/1.74  = { by lemma 9 }
% 11.06/1.74    inverse(multiply(Y, inverse(Y)))
% 11.06/1.74  
% 11.06/1.74  Lemma 27: multiply(inverse(X), X) = multiply(Y, inverse(Y)).
% 11.06/1.74  Proof:
% 11.06/1.74    multiply(inverse(X), X)
% 11.06/1.74  = { by lemma 5 R->L }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(inverse(X), X)))))), T), inverse(T)), inverse(U))
% 11.06/1.74  = { by lemma 26 }
% 11.06/1.74    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(Y, inverse(Y))))))), T), inverse(T)), inverse(U))
% 11.06/1.74  = { by lemma 5 }
% 11.06/1.74    multiply(Y, inverse(Y))
% 11.06/1.74  
% 11.06/1.74  Lemma 28: multiply(multiply(inverse(inverse(inverse(multiply(inverse(X), X)))), Y), inverse(Y)) = multiply(Z, inverse(Z)).
% 11.06/1.74  Proof:
% 11.06/1.74    multiply(multiply(inverse(inverse(inverse(multiply(inverse(X), X)))), Y), inverse(Y))
% 11.06/1.74  = { by lemma 7 }
% 11.06/1.74    multiply(multiply(inverse(inverse(inverse(multiply(inverse(X), X)))), multiply(inverse(multiply(inverse(X), X)), inverse(inverse(multiply(inverse(X), X))))), inverse(multiply(inverse(multiply(inverse(X), X)), inverse(inverse(multiply(inverse(X), X))))))
% 11.06/1.74  = { by lemma 23 }
% 11.06/1.74    multiply(multiply(inverse(W), W), inverse(multiply(inverse(multiply(inverse(X), X)), inverse(inverse(multiply(inverse(X), X))))))
% 11.06/1.74  = { by lemma 24 }
% 11.06/1.75    multiply(Z, inverse(Z))
% 11.06/1.75  
% 11.06/1.75  Lemma 29: inverse(inverse(X)) = X.
% 11.06/1.75  Proof:
% 11.06/1.75    inverse(inverse(X))
% 11.06/1.75  = { by lemma 3 R->L }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, X)), multiply(W, inverse(multiply(inverse(inverse(X)), inverse(X))))))), V), inverse(V))
% 11.06/1.75  = { by lemma 26 }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, X)), multiply(W, inverse(multiply(U, inverse(U))))))), V), inverse(V))
% 11.06/1.75  = { by lemma 28 R->L }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Z)), multiply(Z, Y))), multiply(inverse(multiply(W, X)), multiply(W, inverse(multiply(multiply(inverse(inverse(inverse(multiply(inverse(T), T)))), X), inverse(X))))))), V), inverse(V))
% 11.06/1.75  = { by lemma 3 }
% 11.06/1.75    multiply(inverse(inverse(inverse(multiply(inverse(T), T)))), X)
% 11.06/1.75  = { by axiom 1 (single_axiom) R->L }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(multiply(inverse(inverse(inverse(multiply(inverse(T), T)))), X), inverse(X)), inverse(Z2))))))), X)
% 11.06/1.75  = { by lemma 28 }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(X, inverse(X)), inverse(Z2))))))), X)
% 11.06/1.75  = { by lemma 8 }
% 11.06/1.75    inverse(multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(V2, W2))), multiply(inverse(multiply(U2, T2)), multiply(U2, inverse(multiply(multiply(multiply(X, S2), inverse(S2)), inverse(T2)))))))
% 11.06/1.75  = { by lemma 9 }
% 11.06/1.75    X
% 11.06/1.75  
% 11.06/1.75  Lemma 30: multiply(multiply(X, inverse(X)), inverse(Y)) = inverse(Y).
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(multiply(X, inverse(X)), inverse(Y))
% 11.06/1.75  = { by lemma 24 R->L }
% 11.06/1.75    multiply(multiply(multiply(inverse(Z), Z), inverse(multiply(multiply(inverse(multiply(Y, Y)), multiply(Y, Y)), inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y)))))), inverse(Y))
% 11.06/1.75  = { by lemma 19 R->L }
% 11.06/1.75    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, Y)))), W), inverse(W)), inverse(Y))
% 11.06/1.75  = { by lemma 29 R->L }
% 11.06/1.75    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(inverse(Y)))))), W), inverse(W)), inverse(Y))
% 11.06/1.75  = { by lemma 5 }
% 11.06/1.75    inverse(Y)
% 11.06/1.75  
% 11.06/1.75  Lemma 31: multiply(inverse(multiply(X, inverse(X))), Y) = inverse(inverse(Y)).
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(inverse(multiply(X, inverse(X))), Y)
% 11.06/1.75  = { by lemma 27 R->L }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(Z, W))), multiply(inverse(multiply(Z, W)), multiply(Z, W)))), Y)
% 11.06/1.75  = { by lemma 26 }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(V, inverse(V))), multiply(inverse(multiply(Z, W)), multiply(Z, W)))), Y)
% 11.06/1.75  = { by lemma 29 R->L }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(V, inverse(V))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(inverse(W)))))), Y)
% 11.06/1.75  = { by lemma 30 R->L }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(V, inverse(V))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(U, inverse(U)), inverse(W))))))), Y)
% 11.06/1.75  = { by lemma 26 R->L }
% 11.06/1.75    multiply(inverse(multiply(inverse(multiply(inverse(multiply(T, T)), multiply(T, T))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(U, inverse(U)), inverse(W))))))), Y)
% 11.06/1.75  = { by lemma 2 R->L }
% 11.06/1.75    inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(multiply(U, inverse(U)), inverse(inverse(Y))), inverse(Z2)))))))
% 11.06/1.75  = { by lemma 27 R->L }
% 11.06/1.75    inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(V2, W2))), multiply(inverse(multiply(U2, T2)), multiply(U2, inverse(multiply(multiply(multiply(inverse(inverse(Y)), S2), inverse(S2)), inverse(T2))))))), multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(V2, W2))), multiply(inverse(multiply(U2, T2)), multiply(U2, inverse(multiply(multiply(multiply(inverse(inverse(Y)), S2), inverse(S2)), inverse(T2))))))), inverse(inverse(Y))), inverse(Z2)))))))
% 11.06/1.75  = { by lemma 12 }
% 11.06/1.75    inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(V2, W2))), multiply(inverse(multiply(U2, T2)), multiply(U2, inverse(multiply(multiply(multiply(inverse(inverse(Y)), S2), inverse(S2)), inverse(T2))))))), X3), inverse(X3)), inverse(Z2)))))))
% 11.06/1.75  = { by lemma 3 }
% 11.06/1.75    inverse(multiply(inverse(multiply(inverse(multiply(S, X2)), multiply(X2, S))), multiply(inverse(multiply(Y2, Z2)), multiply(Y2, inverse(multiply(multiply(multiply(inverse(inverse(Y)), S2), inverse(S2)), inverse(Z2)))))))
% 11.06/1.75  = { by lemma 9 }
% 11.06/1.75    inverse(inverse(Y))
% 11.06/1.75  
% 11.06/1.75  Lemma 32: inverse(multiply(X, inverse(X))) = multiply(Y, inverse(Y)).
% 11.06/1.75  Proof:
% 11.06/1.75    inverse(multiply(X, inverse(X)))
% 11.06/1.75  = { by lemma 3 R->L }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))), multiply(inverse(multiply(Z, Z)), multiply(Z, inverse(multiply(inverse(multiply(X, inverse(X))), inverse(Z))))))), W), inverse(W))
% 11.06/1.75  = { by lemma 31 }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))), multiply(inverse(multiply(Z, Z)), multiply(Z, inverse(inverse(inverse(inverse(Z)))))))), W), inverse(W))
% 11.06/1.75  = { by lemma 19 }
% 11.06/1.75    multiply(multiply(inverse(V), V), inverse(multiply(multiply(inverse(multiply(Z, Z)), multiply(Z, inverse(inverse(inverse(inverse(Z)))))), inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))))))
% 11.06/1.75  = { by lemma 27 }
% 11.06/1.75    multiply(multiply(U, inverse(U)), inverse(multiply(multiply(inverse(multiply(Z, Z)), multiply(Z, inverse(inverse(inverse(inverse(Z)))))), inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))))))
% 11.06/1.75  = { by lemma 29 }
% 11.06/1.75    multiply(multiply(U, inverse(U)), inverse(multiply(multiply(inverse(multiply(Z, Z)), multiply(Z, inverse(inverse(Z)))), inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))))))
% 11.06/1.75  = { by lemma 29 }
% 11.06/1.75    multiply(multiply(U, inverse(U)), inverse(multiply(multiply(inverse(multiply(Z, Z)), multiply(Z, Z)), inverse(multiply(inverse(multiply(Z, Z)), multiply(Z, Z))))))
% 11.06/1.75  = { by lemma 24 R->L }
% 11.06/1.75    multiply(multiply(U, inverse(U)), inverse(multiply(multiply(inverse(T), T), inverse(multiply(S, inverse(S))))))
% 11.06/1.75  = { by lemma 27 R->L }
% 11.06/1.75    multiply(multiply(inverse(X2), X2), inverse(multiply(multiply(inverse(T), T), inverse(multiply(S, inverse(S))))))
% 11.06/1.75  = { by lemma 19 R->L }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(multiply(S, inverse(S))), multiply(inverse(T), T))), Y2), inverse(Y2))
% 11.06/1.75  = { by lemma 22 }
% 11.06/1.75    multiply(multiply(inverse(multiply(inverse(Z2), Z2)), W2), inverse(W2))
% 11.06/1.75  = { by lemma 19 }
% 11.06/1.75    multiply(multiply(inverse(V2), V2), inverse(multiply(Z2, inverse(Z2))))
% 11.06/1.75  = { by lemma 24 }
% 11.06/1.75    multiply(Y, inverse(Y))
% 11.06/1.75  
% 11.06/1.75  Lemma 33: multiply(multiply(X, inverse(X)), Y) = Y.
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(multiply(X, inverse(X)), Y)
% 11.06/1.75  = { by lemma 32 R->L }
% 11.06/1.75    multiply(inverse(multiply(Z, inverse(Z))), Y)
% 11.06/1.75  = { by lemma 31 }
% 11.06/1.75    inverse(inverse(Y))
% 11.06/1.75  = { by lemma 29 }
% 11.06/1.75    Y
% 11.06/1.75  
% 11.06/1.75  Lemma 34: multiply(multiply(X, Y), inverse(Y)) = X.
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(multiply(X, Y), inverse(Y))
% 11.06/1.75  = { by lemma 33 R->L }
% 11.06/1.75    multiply(multiply(multiply(multiply(Z, inverse(Z)), X), Y), inverse(Y))
% 11.06/1.75  = { by lemma 7 }
% 11.06/1.75    multiply(multiply(multiply(multiply(Z, inverse(Z)), X), inverse(X)), inverse(inverse(X)))
% 11.06/1.75  = { by lemma 7 R->L }
% 11.06/1.75    multiply(multiply(multiply(multiply(Z, inverse(Z)), W), inverse(W)), inverse(inverse(X)))
% 11.06/1.75  = { by lemma 33 }
% 11.06/1.75    multiply(multiply(W, inverse(W)), inverse(inverse(X)))
% 11.06/1.75  = { by lemma 30 }
% 11.06/1.75    inverse(inverse(X))
% 11.06/1.75  = { by lemma 29 }
% 11.06/1.75    X
% 11.06/1.75  
% 11.06/1.75  Lemma 35: inverse(multiply(Y, X)) = inverse(multiply(X, Y)).
% 11.06/1.75  Proof:
% 11.06/1.75    inverse(multiply(Y, X))
% 11.06/1.75  = { by lemma 34 R->L }
% 11.06/1.75    multiply(multiply(inverse(multiply(Y, X)), V), inverse(V))
% 11.06/1.75  = { by lemma 19 }
% 11.06/1.75    multiply(multiply(inverse(W), W), inverse(multiply(X, Y)))
% 11.06/1.75  = { by lemma 27 }
% 11.06/1.75    multiply(multiply(Z, inverse(Z)), inverse(multiply(X, Y)))
% 11.06/1.75  = { by lemma 30 }
% 11.06/1.75    inverse(multiply(X, Y))
% 11.06/1.75  
% 11.06/1.75  Lemma 36: multiply(Y, X) = multiply(X, Y).
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(Y, X)
% 11.06/1.75  = { by lemma 5 R->L }
% 11.06/1.75    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(Y, X)))))), T), inverse(T)), inverse(U))
% 11.06/1.75  = { by lemma 35 }
% 11.06/1.75    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z, W)), multiply(W, Z))), multiply(inverse(multiply(V, U)), multiply(V, inverse(multiply(X, Y)))))), T), inverse(T)), inverse(U))
% 11.06/1.75  = { by lemma 5 }
% 11.06/1.75    multiply(X, Y)
% 11.06/1.75  
% 11.06/1.75  Lemma 37: multiply(X, multiply(Y, inverse(X))) = Y.
% 11.06/1.75  Proof:
% 11.06/1.75    multiply(X, multiply(Y, inverse(X)))
% 11.06/1.75  = { by lemma 36 }
% 11.06/1.75    multiply(X, multiply(inverse(X), Y))
% 11.06/1.75  = { by lemma 36 }
% 11.06/1.75    multiply(multiply(inverse(X), Y), X)
% 11.06/1.75  = { by lemma 29 R->L }
% 11.06/1.75    multiply(multiply(inverse(X), Y), inverse(inverse(X)))
% 11.06/1.75  = { by lemma 36 }
% 11.06/1.75    multiply(multiply(Y, inverse(X)), inverse(inverse(X)))
% 11.06/1.75  = { by lemma 34 }
% 11.51/1.75    Y
% 11.51/1.75  
% 11.51/1.75  Lemma 38: multiply(inverse(X), multiply(Y, X)) = multiply(Z, multiply(Y, inverse(Z))).
% 11.51/1.75  Proof:
% 11.51/1.75    multiply(inverse(X), multiply(Y, X))
% 11.51/1.75  = { by lemma 21 }
% 11.51/1.75    multiply(inverse(inverse(Z)), multiply(Y, inverse(Z)))
% 11.51/1.75  = { by lemma 29 }
% 11.51/1.75    multiply(Z, multiply(Y, inverse(Z)))
% 11.51/1.75  
% 11.51/1.75  Lemma 39: multiply(multiply(X, Y), Z) = multiply(Y, multiply(X, Z)).
% 11.51/1.75  Proof:
% 11.51/1.75    multiply(multiply(X, Y), Z)
% 11.51/1.75  = { by lemma 36 }
% 11.51/1.75    multiply(Z, multiply(X, Y))
% 11.51/1.75  = { by lemma 29 R->L }
% 11.51/1.75    multiply(Z, inverse(inverse(multiply(X, Y))))
% 11.51/1.75  = { by lemma 37 R->L }
% 11.51/1.75    multiply(multiply(W, multiply(Z, inverse(W))), inverse(inverse(multiply(X, Y))))
% 11.51/1.75  = { by lemma 38 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(inverse(multiply(X, Y))))
% 11.51/1.75  = { by lemma 30 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(multiply(X, inverse(X)), inverse(multiply(X, Y)))))
% 11.51/1.75  = { by lemma 36 }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(X, Y)), multiply(X, inverse(X)))))
% 11.51/1.75  = { by lemma 29 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(inverse(inverse(multiply(inverse(multiply(X, Y)), multiply(X, inverse(X)))))))
% 11.51/1.75  = { by lemma 31 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(V, inverse(V))), multiply(inverse(multiply(X, Y)), multiply(X, inverse(X))))))
% 11.51/1.75  = { by lemma 26 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(U, U)), multiply(U, U))), multiply(inverse(multiply(X, Y)), multiply(X, inverse(X))))))
% 11.51/1.75  = { by lemma 9 R->L }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(U, U)), multiply(U, U))), multiply(inverse(multiply(X, Y)), multiply(X, inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(multiply(inverse(X), Z2), inverse(Z2)), inverse(Y2))))))))))))
% 11.51/1.75  = { by lemma 10 }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(inverse(W2), W2)), multiply(W2, inverse(W2)))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(multiply(inverse(multiply(inverse(multiply(T, S)), multiply(S, T))), multiply(inverse(multiply(X2, Y2)), multiply(X2, inverse(multiply(multiply(multiply(inverse(X), Z2), inverse(Z2)), inverse(Y2))))))))))))
% 11.51/1.75  = { by lemma 9 }
% 11.51/1.75    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(inverse(W2), W2)), multiply(W2, inverse(W2)))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 9 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2))))))), multiply(W2, inverse(W2)))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 27 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2))))))), multiply(inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2))))))), multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2))))))))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 38 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(multiply(inverse(W2), W2), multiply(inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2))))))), inverse(multiply(inverse(W2), W2))))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 36 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(multiply(inverse(W2), W2), multiply(inverse(multiply(inverse(W2), W2)), inverse(multiply(inverse(multiply(inverse(multiply(V2, U2)), multiply(U2, V2))), multiply(inverse(multiply(T2, S2)), multiply(T2, inverse(multiply(multiply(multiply(inverse(multiply(inverse(W2), W2)), X3), inverse(X3)), inverse(S2)))))))))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 9 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(multiply(inverse(W2), W2), multiply(inverse(multiply(inverse(W2), W2)), inverse(multiply(inverse(W2), W2))))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 37 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(inverse(multiply(inverse(W2), W2))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 26 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(inverse(multiply(Y3, inverse(Y3)))), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 29 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(multiply(Y3, inverse(Y3)), multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X))))))
% 11.51/1.76  = { by lemma 33 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(multiply(Z, X), Y)), multiply(multiply(Z, X), inverse(X)))))
% 11.51/1.76  = { by lemma 35 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(inverse(multiply(Y, multiply(Z, X))), multiply(multiply(Z, X), inverse(X)))))
% 11.51/1.76  = { by lemma 36 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(multiply(multiply(Z, X), inverse(X)), inverse(multiply(Y, multiply(Z, X))))))
% 11.51/1.76  = { by lemma 36 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(multiply(inverse(X), multiply(Z, X)), inverse(multiply(Y, multiply(Z, X))))))
% 11.51/1.76  = { by lemma 38 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(multiply(Z3, multiply(Z, inverse(Z3))), inverse(multiply(Y, multiply(Z, X))))))
% 11.51/1.76  = { by lemma 37 }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(Z, inverse(multiply(Y, multiply(Z, X))))))
% 11.51/1.76  = { by lemma 36 R->L }
% 11.51/1.76    multiply(multiply(inverse(inverse(multiply(Y, multiply(X, Z)))), multiply(Z, inverse(multiply(Y, multiply(X, Z))))), inverse(multiply(Z, inverse(multiply(Y, multiply(X, Z))))))
% 11.51/1.76  = { by lemma 34 }
% 11.51/1.76    inverse(inverse(multiply(Y, multiply(X, Z))))
% 11.51/1.76  = { by lemma 29 }
% 11.51/1.76    multiply(Y, multiply(X, Z))
% 11.51/1.76  
% 11.51/1.76  Lemma 40: inverse(multiply(X, inverse(Y))) = multiply(Y, inverse(X)).
% 11.51/1.76  Proof:
% 11.51/1.76    inverse(multiply(X, inverse(Y)))
% 11.51/1.76  = { by lemma 35 }
% 11.51/1.76    inverse(multiply(inverse(Y), X))
% 11.51/1.76  = { by lemma 30 R->L }
% 11.51/1.76    multiply(multiply(Z, inverse(Z)), inverse(multiply(inverse(Y), X)))
% 11.51/1.76  = { by lemma 27 R->L }
% 11.51/1.76    multiply(multiply(inverse(W), W), inverse(multiply(inverse(Y), X)))
% 11.51/1.76  = { by lemma 19 R->L }
% 11.51/1.76    multiply(multiply(inverse(multiply(X, inverse(Y))), multiply(Y, multiply(X, inverse(Y)))), inverse(multiply(Y, multiply(X, inverse(Y)))))
% 11.51/1.76  = { by lemma 37 }
% 11.51/1.76    multiply(multiply(inverse(multiply(X, inverse(Y))), multiply(Y, multiply(X, inverse(Y)))), inverse(X))
% 11.51/1.76  = { by lemma 38 }
% 11.51/1.76    multiply(multiply(V, multiply(Y, inverse(V))), inverse(X))
% 11.51/1.76  = { by lemma 37 }
% 11.51/1.76    multiply(Y, inverse(X))
% 11.51/1.76  
% 11.51/1.76  Lemma 41: inverse(multiply(inverse(X), Y)) = multiply(X, inverse(Y)).
% 11.51/1.76  Proof:
% 11.51/1.76    inverse(multiply(inverse(X), Y))
% 11.51/1.76  = { by lemma 35 }
% 11.51/1.76    inverse(multiply(Y, inverse(X)))
% 11.51/1.76  = { by lemma 40 }
% 11.51/1.76    multiply(X, inverse(Y))
% 11.51/1.76  
% 11.51/1.76  Lemma 42: multiply(X, inverse(multiply(X, Y))) = inverse(Y).
% 11.51/1.76  Proof:
% 11.51/1.76    multiply(X, inverse(multiply(X, Y)))
% 11.51/1.76  = { by lemma 5 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(X, inverse(multiply(X, Y)))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 35 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(inverse(multiply(X, Y)), X)))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 37 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(inverse(multiply(X, Y)), multiply(X, multiply(X, inverse(X))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 33 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(multiply(W, inverse(W)), multiply(inverse(multiply(X, Y)), multiply(X, multiply(X, inverse(X)))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 35 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, multiply(X, inverse(X)))), multiply(W, inverse(W)))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 32 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, multiply(X, inverse(X)))), inverse(multiply(V, inverse(V))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 26 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, multiply(X, inverse(X)))), inverse(multiply(inverse(multiply(U, U)), multiply(U, U))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 32 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, inverse(multiply(T, inverse(T))))), inverse(multiply(inverse(multiply(U, U)), multiply(U, U))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 30 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(multiply(S, inverse(S)), inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, inverse(multiply(T, inverse(T))))), inverse(multiply(inverse(multiply(U, U)), multiply(U, U)))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 27 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(multiply(inverse(X2), X2), inverse(multiply(multiply(inverse(multiply(X, Y)), multiply(X, inverse(multiply(T, inverse(T))))), inverse(multiply(inverse(multiply(U, U)), multiply(U, U)))))))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 19 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(U, U)), multiply(U, U))), multiply(inverse(multiply(X, Y)), multiply(X, inverse(multiply(T, inverse(T))))))), Y2), inverse(Y2)))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 4 R->L }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, Z2)), multiply(Z2, Z2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(multiply(multiply(T, inverse(T)), inverse(V2))))))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 30 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(inverse(multiply(inverse(multiply(Z2, Z2)), multiply(Z2, Z2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(inverse(V2)))))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 26 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(inverse(multiply(U2, inverse(U2))), multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(inverse(V2)))))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 31 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(inverse(inverse(multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(inverse(V2))))))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 29 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(W2, inverse(inverse(V2))))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 29 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(inverse(multiply(W2, V2)), multiply(W2, V2))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 25 }
% 11.51/1.76    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, multiply(inverse(multiply(T2, inverse(T2))), Y))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.76  = { by lemma 31 }
% 11.51/1.77    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, inverse(inverse(Y)))))), Z), inverse(Z)), inverse(Y))
% 11.51/1.77  = { by lemma 29 }
% 11.51/1.77    multiply(multiply(multiply(inverse(multiply(inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y))), multiply(inverse(multiply(Y, Y)), multiply(Y, Y)))), Z), inverse(Z)), inverse(Y))
% 11.51/1.77  = { by lemma 19 }
% 11.51/1.77    multiply(multiply(multiply(inverse(S2), S2), inverse(multiply(multiply(inverse(multiply(Y, Y)), multiply(Y, Y)), inverse(multiply(inverse(multiply(Y, Y)), multiply(Y, Y)))))), inverse(Y))
% 11.51/1.77  = { by lemma 24 }
% 11.51/1.77    multiply(multiply(X3, inverse(X3)), inverse(Y))
% 11.51/1.77  = { by lemma 30 }
% 11.51/1.77    inverse(Y)
% 11.51/1.77  
% 11.51/1.77  Goal 1 (prove_these_axioms_3): multiply(multiply(a3, b3), c3) = multiply(a3, multiply(b3, c3)).
% 11.51/1.77  Proof:
% 11.51/1.77    multiply(multiply(a3, b3), c3)
% 11.51/1.77  = { by axiom 1 (single_axiom) R->L }
% 11.51/1.77    multiply(multiply(a3, b3), multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W))))))), inverse(b3)))
% 11.51/1.77  = { by lemma 36 }
% 11.51/1.77    multiply(multiply(b3, a3), multiply(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W))))))), inverse(b3)))
% 11.51/1.77  = { by lemma 40 R->L }
% 11.51/1.77    multiply(multiply(b3, a3), inverse(multiply(b3, inverse(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W)))))))))))
% 11.51/1.77  = { by lemma 39 }
% 11.51/1.77    multiply(a3, multiply(b3, inverse(multiply(b3, inverse(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W))))))))))))
% 11.51/1.77  = { by lemma 42 }
% 11.51/1.77    multiply(a3, inverse(inverse(inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W))))))))))
% 11.51/1.77  = { by lemma 29 }
% 11.51/1.77    multiply(a3, inverse(multiply(inverse(multiply(inverse(multiply(X, Y)), multiply(Y, X))), multiply(inverse(multiply(Z, W)), multiply(Z, inverse(multiply(multiply(c3, inverse(inverse(b3))), inverse(W))))))))
% 11.51/1.77  = { by lemma 2 }
% 11.51/1.77    multiply(a3, multiply(inverse(multiply(inverse(multiply(inverse(multiply(V, V)), multiply(V, V))), multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(c3, inverse(T))))))), b3))
% 11.51/1.77  = { by lemma 41 }
% 11.51/1.77    multiply(a3, multiply(multiply(multiply(inverse(multiply(V, V)), multiply(V, V)), inverse(multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(c3, inverse(T))))))), b3))
% 11.51/1.77  = { by lemma 27 }
% 11.51/1.77    multiply(a3, multiply(multiply(multiply(S, inverse(S)), inverse(multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(c3, inverse(T))))))), b3))
% 11.51/1.77  = { by lemma 30 }
% 11.51/1.77    multiply(a3, multiply(inverse(multiply(inverse(multiply(U, T)), multiply(U, inverse(multiply(c3, inverse(T)))))), b3))
% 11.51/1.77  = { by lemma 41 }
% 11.51/1.77    multiply(a3, multiply(multiply(multiply(U, T), inverse(multiply(U, inverse(multiply(c3, inverse(T)))))), b3))
% 11.51/1.77  = { by lemma 39 }
% 11.51/1.77    multiply(a3, multiply(multiply(T, multiply(U, inverse(multiply(U, inverse(multiply(c3, inverse(T))))))), b3))
% 11.51/1.77  = { by lemma 42 }
% 11.51/1.77    multiply(a3, multiply(multiply(T, inverse(inverse(multiply(c3, inverse(T))))), b3))
% 11.51/1.77  = { by lemma 29 }
% 11.51/1.77    multiply(a3, multiply(multiply(T, multiply(c3, inverse(T))), b3))
% 11.51/1.77  = { by lemma 37 }
% 11.51/1.77    multiply(a3, multiply(c3, b3))
% 11.51/1.77  = { by lemma 36 R->L }
% 11.51/1.77    multiply(a3, multiply(b3, c3))
% 11.51/1.77  % SZS output end Proof
% 11.51/1.77  
% 11.51/1.77  RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------