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| Mirrors > Home > ILE Home > Th. List > rpregt0d | GIF version | ||
| Description: A positive real is real and greater than zero. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| rpred.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
| Ref | Expression |
|---|---|
| rpregt0d | ⊢ (𝜑 → (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpred.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
| 2 | 1 | rpred 10080 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 1 | rpgt0d 10083 | . 2 ⊢ (𝜑 → 0 < 𝐴) |
| 4 | 2, 3 | jca 306 | 1 ⊢ (𝜑 → (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∈ wcel 2209 class class class wbr 4128 ℝcr 8172 0cc0 8173 < clt 8354 ℝ+crp 10037 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rab 2537 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3714 df-pr 3715 df-op 3717 df-br 4129 df-rp 10038 |
| This theorem is referenced by: reclt1d 10094 recgt1d 10095 ltrecd 10099 lerecd 10100 ltrec1d 10101 lerec2d 10102 lediv2ad 10103 ltdiv2d 10104 lediv2d 10105 ledivdivd 10106 divge0d 10121 ltmul1d 10122 ltmul2d 10123 lemul1d 10124 lemul2d 10125 ltdiv1d 10126 lediv1d 10127 ltmuldivd 10128 ltmuldiv2d 10129 lemuldivd 10130 lemuldiv2d 10131 ltdivmuld 10132 ltdivmul2d 10133 ledivmuld 10134 ledivmul2d 10135 ltdiv23d 10141 lediv23d 10142 lt2mul2divd 10149 mertenslemi1 12285 isprm6 12908 birthdaylem3 16072 |
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