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| Mirrors > Home > MPE Home > Th. List > halfre | Structured version Visualization version GIF version | ||
| Description: One-half is real. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| halfre | ⊢ (1 / 2) ∈ ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 12340 | . 2 ⊢ 2 ∈ ℝ | |
| 2 | 2ne0 12370 | . 2 ⊢ 2 ≠ 0 | |
| 3 | 1, 2 | rereccli 12032 | 1 ⊢ (1 / 2) ∈ ℝ |
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