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Mirrors > Home > MPE Home > Th. List > 1rp | Structured version Visualization version GIF version |
Description: 1 is a positive real. (Contributed by Jeff Hankins, 23-Nov-2008.) |
Ref | Expression |
---|---|
1rp | ⊢ 1 ∈ ℝ+ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1re 10984 | . 2 ⊢ 1 ∈ ℝ | |
2 | 0lt1 11506 | . 2 ⊢ 0 < 1 | |
3 | 1, 2 | elrpii 12742 | 1 ⊢ 1 ∈ ℝ+ |
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