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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 10115 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 1 | rpgt0d 10118 | . 2 ⊢ (𝜑 → 0 < 𝐴) |
| 4 | 2, 3 | jca 306 | 1 ⊢ (𝜑 → (𝐴 ∈ ℝ ∧ 0 < 𝐴)) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∈ wcel 2209 class class class wbr 4131 ℝcr 8185 0cc0 8186 < clt 8367 ℝ+crp 10072 |
| This proof depends on 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 proof 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 3715 df-pr 3716 df-op 3718 df-br 4132 df-rp 10073 |
| This theorem is used by: reclt1d 10129 recgt1d 10130 ltrecd 10134 lerecd 10135 ltrec1d 10136 lerec2d 10137 lediv2ad 10138 ltdiv2d 10139 lediv2d 10140 ledivdivd 10141 divge0d 10156 ltmul1d 10157 ltmul2d 10158 lemul1d 10159 lemul2d 10160 ltdiv1d 10161 lediv1d 10162 ltmuldivd 10163 ltmuldiv2d 10164 lemuldivd 10165 lemuldiv2d 10166 ltdivmuld 10167 ltdivmul2d 10168 ledivmuld 10169 ledivmul2d 10170 ltdiv23d 10176 lediv23d 10177 lt2mul2divd 10184 mertenslemi1 12328 isprm6 12952 birthdaylem3 16239 bcmono 16316 |
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