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| Mirrors > Home > ILE Home > Th. List > rpgt0d | GIF version | ||
| Description: A positive real is greater than zero. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| rpred.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ+) |
| Ref | Expression |
|---|---|
| rpgt0d | ⊢ (𝜑 → 0 < 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rpred.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ+) | |
| 2 | rpgt0 10084 | . 2 ⊢ (𝐴 ∈ ℝ+ → 0 < 𝐴) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 0 < 𝐴) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 class class class wbr 4131 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-sn 3715 df-pr 3716 df-op 3718 df-br 4132 df-rp 10073 |
| This theorem is used by: rpregt0d 10122 ltmulgt11d 10151 ltmulgt12d 10152 gt0divd 10153 ge0divd 10154 lediv12ad 10175 expgt0 11031 nnesq 11119 bccl2 11229 resqrexlemp1rp 11795 resqrexlemover 11799 resqrexlemnm 11807 resqrexlemgt0 11809 resqrexlemglsq 11811 sqrtgt0d 11949 reccn2ap 12105 fsumlt 12257 eirraplem 12570 dvdsmodexp 12588 bitsmod 12749 prmind2 12924 sqrt2irrlem 12966 modprmn0modprm0 13065 4sqlem11 13210 4sqlem12 13211 modxai 13225 ssblex 15669 mulc1cncf 15827 cncfmptc 15834 mulcncflem 15845 cnplimclemle 15906 pilem3 16022 sgmnncl 16269 iooref1o 17301 trilpolemeq1 17308 nconstwlpolemgt0 17333 taupi 17342 |
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