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Mirrors > Home > MPE Home > Th. List > elrpd | Structured version Visualization version GIF version |
Description: Membership in the set of positive reals. (Contributed by Mario Carneiro, 28-May-2016.) |
Ref | Expression |
---|---|
elrpd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
elrpd.2 | ⊢ (𝜑 → 0 < 𝐴) |
Ref | Expression |
---|---|
elrpd | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elrpd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
2 | elrpd.2 | . 2 ⊢ (𝜑 → 0 < 𝐴) | |
3 | elrp 12741 | . 2 ⊢ (𝐴 ∈ ℝ+ ↔ (𝐴 ∈ ℝ ∧ 0 < 𝐴)) | |
4 | 1, 2, 3 | sylanbrc 583 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
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