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Mirrors > Home > MPE Home > Th. List > pire | Structured version Visualization version GIF version |
Description: π is a real number. (Contributed by Paul Chapman, 23-Jan-2008.) |
Ref | Expression |
---|---|
pire | ⊢ π ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pilem3 25621 | . . 3 ⊢ (π ∈ (2(,)4) ∧ (sin‘π) = 0) | |
2 | 1 | simpli 484 | . 2 ⊢ π ∈ (2(,)4) |
3 | elioore 13118 | . 2 ⊢ (π ∈ (2(,)4) → π ∈ ℝ) | |
4 | 2, 3 | ax-mp 5 | 1 ⊢ π ∈ ℝ |
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