Axiom ax-1rid 7851

Description: 1 is an identity element for real multiplication. Axiom for real and complex numbers, justified by Theorem ax1rid 7809. (Contributed by NM, 29-Jan-1995.)

Assertion

Ref	Expression
ax-1rid	|- ( A e. RR -> ( A x. 1 ) = A )

Detailed syntax breakdown of Axiom ax-1rid

Step	Hyp	Ref	Expression
1		cA	. . 3 class A
2		cr 7743	. . 3 class RR
3	1, 2	wcel 2135	. 2 wff A e. RR
4		c1 7745	. . . 4 class 1
5		cmul 7749	. . . 4 class x.
6	1, 4, 5	co 5836	. . 3 class ( A x. 1 )
7	6, 1	wceq 1342	. 2 wff ( A x. 1 ) = A
8	3, 7	wi 4	1 wff ( A e. RR -> ( A x. 1 ) = A )

This axiom is referenced by:  mulid1  7887  mulgt1  8749  ltmulgt11  8750  lemulge11  8752  addltmul  9084