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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 10068 | . 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 4130 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-sn 3715 df-pr 3716 df-op 3718 df-br 4131 df-rp 10057 |
| This theorem is used by: rpregt0d 10106 ltmulgt11d 10135 ltmulgt12d 10136 gt0divd 10137 ge0divd 10138 lediv12ad 10159 expgt0 11011 nnesq 11099 bccl2 11208 resqrexlemp1rp 11774 resqrexlemover 11778 resqrexlemnm 11786 resqrexlemgt0 11788 resqrexlemglsq 11790 sqrtgt0d 11927 reccn2ap 12081 fsumlt 12233 eirraplem 12546 dvdsmodexp 12564 bitsmod 12725 prmind2 12900 sqrt2irrlem 12941 modprmn0modprm0 13037 4sqlem11 13182 4sqlem12 13183 modxai 13197 ssblex 15534 mulc1cncf 15692 cncfmptc 15699 mulcncflem 15710 cnplimclemle 15771 pilem3 15887 sgmnncl 16108 iooref1o 17095 trilpolemeq1 17101 nconstwlpolemgt0 17126 taupi 17135 |
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