Description: A natural number is an extended real. (Contributed by Glauco Siliprandi, 24-Jan-2025)
Ref | Expression | ||
---|---|---|---|
Assertion | nnxr | |- ( N e. NN -> N e. RR* ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id | |- ( N e. NN -> N e. NN ) |
|
2 | 1 | nnxrd | |- ( N e. NN -> N e. RR* ) |