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| Mirrors > Home > ILE Home > Th. List > 1re | GIF version | ||
| Description: 1 is a real number. (Contributed by Jim Kingdon, 13-Jan-2020.) |
| Ref | Expression |
|---|---|
| 1re | ⊢ 1 ∈ ℝ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1re 8169 | 1 ⊢ 1 ∈ ℝ |
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