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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 8317 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3236 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2203 ℝcr 8126 ℝ*cxr 8307 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-v 2815 df-un 3215 df-in 3217 df-ss 3224 df-xr 8312 |
| This theorem is referenced by: xnn0xr 9568 rpxr 9994 rpxrd 10030 xnn0dcle 10135 xnegcl 10165 xaddf 10177 xaddval 10178 xnn0lenn0nn0 10198 xposdif 10215 iooshf 10285 icoshftf1o 10324 ioo0 10619 ioom 10620 ico0 10621 ioc0 10622 xqltnle 10627 modqelico 10696 mulqaddmodid 10726 addmodid 10734 elicc4abs 11779 xrmaxiflemcl 11930 fprodge1 12325 pcxcl 13009 pcdvdsb 13018 pcaddlem 13037 pcadd 13038 xblss2ps 15269 xblss2 15270 blss2ps 15271 blss2 15272 blhalf 15273 cnblcld 15400 ioo2blex 15417 tgioo 15419 cnopnap 15476 suplociccreex 15489 suplociccex 15490 dedekindicc 15498 ivthinclemlm 15499 ivthinclemum 15500 ivthinclemlopn 15501 ivthinclemuopn 15503 ivthdec 15509 ivthreinc 15510 sin0pilem2 15647 pilem3 15648 vtxdgfifival 16286 |
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