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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 10049 | . 2 ⊢ (𝐴 ∈ ℝ+ → 0 < 𝐴) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → 0 < 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2209 class class class wbr 4128 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-sn 3714 df-pr 3715 df-op 3717 df-br 4129 df-rp 10038 |
| This theorem is referenced by: rpregt0d 10087 ltmulgt11d 10116 ltmulgt12d 10117 gt0divd 10118 ge0divd 10119 lediv12ad 10140 expgt0 10992 nnesq 11080 bccl2 11189 resqrexlemp1rp 11755 resqrexlemover 11759 resqrexlemnm 11767 resqrexlemgt0 11769 resqrexlemglsq 11771 sqrtgt0d 11908 reccn2ap 12062 fsumlt 12214 eirraplem 12527 dvdsmodexp 12545 bitsmod 12706 prmind2 12881 sqrt2irrlem 12922 modprmn0modprm0 13018 4sqlem11 13163 4sqlem12 13164 modxai 13178 ssblex 15515 mulc1cncf 15673 cncfmptc 15680 mulcncflem 15691 cnplimclemle 15752 pilem3 15867 sgmnncl 16085 iooref1o 17057 trilpolemeq1 17063 nconstwlpolemgt0 17088 taupi 17097 |
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