Axiom ax-mulcom 7997

Description: Multiplication of complex numbers is commutative. Axiom for real and complex numbers, justified by Theorem axmulcom 7955. Proofs should normally use mulcom 8025 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 7894	. . . 4 class CC
3	1, 2	wcel 2167	. . 3 wff A e. CC
4		cB	. . . 4 class B
5	4, 2	wcel 2167	. . 3 wff B e. CC
6	3, 5	wa 104	. 2 wff ( A e. CC /\ B e. CC )
7		cmul 7901	. . . 4 class x.
8	1, 4, 7	co 5925	. . 3 class ( A x. B )
9	4, 1, 7	co 5925	. . 3 class ( B x. A )
10	8, 9	wceq 1364	. 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  8025