Theorem mulslidd

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

	Ref	Expression
Hypothesis	mulslidd.1	$$⊢\phi \to A\in \mathrm{No}$$
Assertion	mulslidd	Could not format assertion : No typesetting found for |- ( ph -> ( 1s x.s A ) = A ) with typecode |-

Proof

Step	Hyp	Ref	Expression
1		mulslidd.1	$$⊢\phi \to A\in \mathrm{No}$$
2		mulslid	Could not format ( A e. No -> ( 1s x.s A ) = A ) : No typesetting found for |- ( A e. No -> ( 1s x.s A ) = A ) with typecode |-
3	1 2	syl	Could not format ( ph -> ( 1s x.s A ) = A ) : No typesetting found for |- ( ph -> ( 1s x.s A ) = A ) with typecode |-