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| Mirrors > Home > ILE Home > Th. List > 2re | GIF version | ||
| Description: The number 2 is real. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| 2re | ⊢ 2 ∈ ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-2 9049 | . 2 ⊢ 2 = (1 + 1) | |
| 2 | 1re 8025 | . . 3 ⊢ 1 ∈ ℝ | |
| 3 | 2, 2 | readdcli 8039 | . 2 ⊢ (1 + 1) ∈ ℝ |
| 4 | 1, 3 | eqeltri 2269 | 1 ⊢ 2 ∈ ℝ |
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