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| Mirrors > Home > ILE Home > Th. List > rexrd | GIF version | ||
| Description: A standard real is an extended real. (Contributed by Mario Carneiro, 28-May-2016.) |
| Ref | Expression |
|---|---|
| rexrd.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ) |
| Ref | Expression |
|---|---|
| rexrd | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressxr 8369 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3246 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ℝcr 8178 ℝ*cxr 8359 |
| 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-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-xr 8364 |
| This theorem is used by: xnn0xr 9635 rpxr 10062 rpxrd 10098 xnn0dcle 10204 xnegcl 10234 xaddf 10246 xaddval 10247 xnn0lenn0nn0 10267 xposdif 10284 iooshf 10354 icoshftf1o 10393 ioo0 10694 ioom 10695 ico0 10696 ioc0 10697 xqltnle 10702 modqelico 10771 mulqaddmodid 10801 addmodid 10809 elicc4abs 11860 xrmaxiflemcl 12011 fprodge1 12406 pcxcl 13090 pcdvdsb 13099 pcaddlem 13118 pcadd 13119 xblss2ps 15505 xblss2 15506 blss2ps 15507 blss2 15508 blhalf 15509 cnblcld 15636 ioo2blex 15653 tgioo 15655 cnopnap 15712 suplociccreex 15725 suplociccex 15726 dedekindicc 15734 ivthinclemlm 15735 ivthinclemum 15736 ivthinclemlopn 15737 ivthinclemuopn 15739 ivthdec 15745 ivthreinc 15746 sin0pilem2 15883 pilem3 15884 vtxdgfifival 16532 |
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