Theorem divs1d

Description: A surreal divided by one is itself. Deduction version. (Contributed by Scott Fenton, 27-Feb-2026)

	Ref	Expression
Hypothesis	divs1d.1	|- ( ph -> A e. No )
Assertion	divs1d	|- ( ph -> ( A /su 1s ) = A )

Proof

Step	Hyp	Ref	Expression
1		divs1d.1	|- ( ph -> A e. No )
2		divs1	|- ( A e. No -> ( A /su 1s ) = A )
3	1 2	syl	|- ( ph -> ( A /su 1s ) = A )