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| Mirrors > Home > ILE Home > Th. List > 1rp | GIF version | ||
| Description: 1 is a positive real. (Contributed by Jeff Hankins, 23-Nov-2008.) |
| Ref | Expression |
|---|---|
| 1rp | ⊢ 1 ∈ ℝ+ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 8331 | . 2 ⊢ 1 ∈ ℝ | |
| 2 | 0lt1 8460 | . 2 ⊢ 0 < 1 | |
| 3 | 1, 2 | elrpii 10074 | 1 ⊢ 1 ∈ ℝ+ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 1c1 8186 ℝ+crp 10071 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 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-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8276 ax-resscn 8277 ax-1re 8279 ax-addrcl 8282 ax-0lt1 8291 ax-rnegex 8294 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-xp 4782 df-pnf 8368 df-mnf 8369 df-ltxr 8371 df-rp 10072 |
| This theorem is used by: rpreccl 10098 rpexpcl 11016 caubnd2 11906 climcaucn 12142 fprodrpcl 12403 isprm6 12951 unirnblps 15648 unirnbl 15649 mopnex 15731 tgioo 15780 cncfmptc 15822 dveflem 15952 log1 16095 logrpap0b 16106 rplogcl 16109 logge0 16110 logge0b 16120 loggt0b 16121 1cxp 16133 rplogb1 16184 logbrec 16196 logbgcd1irraplemexp 16204 iooref1o 17289 qdiff 17305 |
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