Axiom ax-mulcom 7854

Description: Multiplication of complex numbers is commutative. Axiom for real and complex numbers, justified by Theorem axmulcom 7812. Proofs should normally use mulcom 7882 instead. (New usage is discouraged.) (Contributed by NM, 22-Nov-1994.)

Assertion

Ref	Expression
ax-mulcom	|- ( ( A e. CC /\ B e. CC ) -> ( A x. B ) = ( B x. A ) )

Detailed syntax breakdown of Axiom ax-mulcom

Step	Hyp	Ref	Expression
1		cA	. . . 4 class A
2		cc 7751	. . . 4 class CC
3	1, 2	wcel 2136	. . 3 wff A e. CC
4		cB	. . . 4 class B
5	4, 2	wcel 2136	. . 3 wff B e. CC
6	3, 5	wa 103	. 2 wff ( A e. CC /\ B e. CC )
7		cmul 7758	. . . 4 class x.
8	1, 4, 7	co 5842	. . 3 class ( A x. B )
9	4, 1, 7	co 5842	. . 3 class ( B x. A )
10	8, 9	wceq 1343	. 2 wff ( A x. B ) = ( B x. A )
11	6, 10	wi 4	1 wff ( ( A e. CC /\ B e. CC ) -> ( A x. B ) = ( B x. A ) )

This axiom is referenced by:  mulcom  7882