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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 10099 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| 3 | 1 | rpgt0d 10102 | . 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 4130 ℝcr 8178 0cc0 8179 < clt 8360 ℝ+crp 10056 |
| 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 4131 df-rp 10057 |
| This theorem is used by: reclt1d 10113 recgt1d 10114 ltrecd 10118 lerecd 10119 ltrec1d 10120 lerec2d 10121 lediv2ad 10122 ltdiv2d 10123 lediv2d 10124 ledivdivd 10125 divge0d 10140 ltmul1d 10141 ltmul2d 10142 lemul1d 10143 lemul2d 10144 ltdiv1d 10145 lediv1d 10146 ltmuldivd 10147 ltmuldiv2d 10148 lemuldivd 10149 lemuldiv2d 10150 ltdivmuld 10151 ltdivmul2d 10152 ledivmuld 10153 ledivmul2d 10154 ltdiv23d 10160 lediv23d 10161 lt2mul2divd 10168 mertenslemi1 12304 isprm6 12927 birthdaylem3 16095 bcmono 16124 |
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