Theorem mulsridd

Description: Surreal one is a right identity element for multiplication. (Contributed by Scott Fenton, 14-Mar-2025)

	Ref	Expression
Hypothesis	mulsridd.1	|- ( ph -> A e. No )
Assertion	mulsridd	|- ( ph -> ( A x.s 1s ) = A )

Proof

Step	Hyp	Ref	Expression
1		mulsridd.1	|- ( ph -> A e. No )
2		mulsrid	|- ( A e. No -> ( A x.s 1s ) = A )
3	1 2	syl	|- ( ph -> ( A x.s 1s ) = A )