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Mirrors > Home > ILE Home > Th. List > rpxrd | GIF version |
Description: A positive real is an extended real. (Contributed by Mario Carneiro, 28-May-2016.) |
Ref | Expression |
---|---|
rpred.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
Ref | Expression |
---|---|
rpxrd | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | rpred.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
2 | 1 | rpred 9762 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
3 | 2 | rexrd 8069 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 2164 ℝ*cxr 8053 ℝ+crp 9719 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-ext 2175 |
This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1472 df-sb 1774 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-rab 2481 df-v 2762 df-un 3157 df-in 3159 df-ss 3166 df-xr 8058 df-rp 9720 |
This theorem is referenced by: ssblex 14599 metequiv2 14664 metss2lem 14665 metcnp 14680 metcnpi3 14685 |
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