Metamath Proof Explorer

Theorem zno

Description: A surreal integer is a surreal. (Contributed by Scott Fenton, 17-May-2025)

Ref Expression
Assertion zno 
|- ( A e. ZZ_s -> A e. No )

Proof

Step Hyp Ref Expression
1 zssno 
 |-  ZZ_s C_ No
2 1 sseli 
 |-  ( A e. ZZ_s -> A e. No )