1 include "logic/equality.ma".
3 (* Inclusion of: GRP508-1.p *)
5 (* -------------------------------------------------------------------------- *)
7 (* File : GRP508-1 : TPTP v3.7.0. Bugfixed v2.7.0. *)
9 (* Domain : Group Theory (Abelian) *)
11 (* Problem : Axiom for Abelian group theory, in product and inverse, part 4 *)
13 (* Version : [McC93] (equality) axioms. *)
17 (* Refs : [Neu81] Neumann (1981), Another Single Law for Groups *)
19 (* : [LW92] Lusk & Wos (1992), Benchmark Problems in Which Equalit *)
21 (* : [McC93] McCune (1993), Single Axioms for Groups and Abelian Gr *)
27 (* Status : Unsatisfiable *)
29 (* Rating : 0.56 v3.4.0, 0.62 v3.3.0, 0.64 v3.2.0, 0.57 v3.1.0, 0.56 v2.7.0 *)
31 (* Syntax : Number of clauses : 2 ( 0 non-Horn; 2 unit; 1 RR) *)
33 (* Number of atoms : 2 ( 2 equality) *)
35 (* Maximal clause size : 1 ( 1 average) *)
37 (* Number of predicates : 1 ( 0 propositional; 2-2 arity) *)
39 (* Number of functors : 4 ( 2 constant; 0-2 arity) *)
41 (* Number of variables : 6 ( 0 singleton) *)
43 (* Maximal term depth : 10 ( 4 average) *)
45 (* Comments : A UEQ part of GRP084-1 *)
47 (* Bugfixes : v2.7.0 - Grounded conjecture *)
49 (* -------------------------------------------------------------------------- *)
50 ntheorem prove_these_axioms_4:
51 (∀Univ:Type.∀A:Univ.∀B:Univ.∀C:Univ.∀D:Univ.∀E:Univ.∀F:Univ.
54 ∀inverse:∀_:Univ.Univ.
55 ∀multiply:∀_:Univ.∀_:Univ.Univ.
56 ∀H0:∀A:Univ.∀B:Univ.∀C:Univ.∀D:Univ.∀E:Univ.∀F:Univ.eq Univ (multiply (inverse (multiply (inverse (multiply (inverse (multiply A B)) (multiply B A))) (multiply (inverse (multiply C D)) (multiply C (inverse (multiply (multiply E (inverse F)) (inverse D))))))) F) E.eq Univ (multiply a b) (multiply b a))
71 ntry (nassumption) ##;
74 (* -------------------------------------------------------------------------- *)