Description: A positive surreal integer is a surreal. (Contributed by Scott Fenton, 15-Apr-2025)
Ref | Expression | ||
---|---|---|---|
Hypothesis | nnsnod.1 | |- ( ph -> A e. NN_s ) |
|
Assertion | nnsnod | |- ( ph -> A e. No ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nnsnod.1 | |- ( ph -> A e. NN_s ) |
|
2 | nnsno | |- ( A e. NN_s -> A e. No ) |
|
3 | 1 2 | syl | |- ( ph -> A e. No ) |