1 include "logic/equality.ma".
3 (* Inclusion of: GRP556-1.p *)
5 (* -------------------------------------------------------------------------- *)
7 (* File : GRP556-1 : TPTP v3.2.0. Bugfixed v2.7.0. *)
9 (* Domain : Group Theory (Abelian) *)
11 (* Problem : Axiom for Abelian group theory, in division and inverse, part 4 *)
13 (* Version : [McC93] (equality) axioms. *)
17 (* Refs : [McC93] McCune (1993), Single Axioms for Groups and Abelian Gr *)
23 (* Status : Unsatisfiable *)
25 (* Rating : 0.00 v2.7.0 *)
27 (* Syntax : Number of clauses : 3 ( 0 non-Horn; 3 unit; 1 RR) *)
29 (* Number of atoms : 3 ( 3 equality) *)
31 (* Maximal clause size : 1 ( 1 average) *)
33 (* Number of predicates : 1 ( 0 propositional; 2-2 arity) *)
35 (* Number of functors : 5 ( 2 constant; 0-2 arity) *)
37 (* Number of variables : 5 ( 0 singleton) *)
39 (* Maximal term depth : 6 ( 3 average) *)
41 (* Comments : A UEQ part of GRP096-1 *)
43 (* Bugfixes : v2.7.0 - Grounded conjecture *)
45 (* -------------------------------------------------------------------------- *)
46 ntheorem prove_these_axioms_4:
47 ∀Univ:Type.∀A:Univ.∀B:Univ.∀C:Univ.
50 ∀divide:∀_:Univ.∀_:Univ.Univ.
51 ∀inverse:∀_:Univ.Univ.
52 ∀multiply:∀_:Univ.∀_:Univ.Univ.
53 ∀H0:∀A:Univ.∀B:Univ.eq Univ (multiply A B) (divide A (inverse B)).
54 ∀H1:∀A:Univ.∀B:Univ.∀C:Univ.eq Univ (divide (divide A (inverse (divide B (divide A C)))) C) B.eq Univ (multiply a b) (multiply b a)
70 (* -------------------------------------------------------------------------- *)