Theorem mulsridd

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

	Ref	Expression
Hypothesis	mulsridd.1	$$⊢\phi \to A\in \mathrm{No}$$
Assertion	mulsridd	$$⊢\phi \to A{\cdot }_s{1}_s=A$$

Proof

Step	Hyp	Ref	Expression
1		mulsridd.1	$$⊢\phi \to A\in \mathrm{No}$$
2		mulsrid	$$⊢A\in \mathrm{No}\to A{\cdot }_s{1}_s=A$$
3	1 2	syl	$$⊢\phi \to A{\cdot }_s{1}_s=A$$