Theorem mullidi

Description: Identity law for multiplication. (Contributed by NM, 14-Feb-1995)

	Ref	Expression
Hypothesis	axi.1	|- A e. CC
Assertion	mullidi	|- ( 1 x. A ) = A

Proof

Step	Hyp	Ref	Expression
1		axi.1	|- A e. CC
2		mullid	|- ( A e. CC -> ( 1 x. A ) = A )
3	1 2	ax-mp	|- ( 1 x. A ) = A