Metamath Proof Explorer


Theorem zno

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

Ref Expression
Assertion zno ⊢ A ∈ ℤ s → A ∈ No

Proof

Step Hyp Ref Expression
1 zssno ⊢ ℤ s ⊆ No
2 1 sseli ⊢ A ∈ ℤ s → A ∈ No