Description: The real numbers are a subset of the complex numbers. Axiom 1 of 22 for real and complex numbers, justified by Theorem axresscn . (Contributed by NM, 1-Mar-1995)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | ax-resscn | ⊢ ℝ ⊆ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 0 | cr | ⊢ ℝ | |
| 1 | cc | ⊢ ℂ | |
| 2 | 0 1 | wss | ⊢ ℝ ⊆ ℂ |