Theorem nnsno

Description: A positive surreal integer is a surreal. (Contributed by Scott Fenton, 15-Apr-2025)

	Ref	Expression
Assertion	nnsno	$$⊢A\in {\mathbb{N}}_s\to A\in \mathrm{No}$$

Proof

Step	Hyp	Ref	Expression
1		nnssno	$$⊢{\mathbb{N}}_s\subseteq \mathrm{No}$$
2	1	sseli	$$⊢A\in {\mathbb{N}}_s\to A\in \mathrm{No}$$