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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 8206 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3222 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 ℝcr 8014 ℝ*cxr 8196 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-xr 8201 |
| This theorem is referenced by: xnn0xr 9453 rpxr 9874 rpxrd 9910 xnn0dcle 10015 xnegcl 10045 xaddf 10057 xaddval 10058 xnn0lenn0nn0 10078 xposdif 10095 iooshf 10165 icoshftf1o 10204 ioo0 10496 ioom 10497 ico0 10498 ioc0 10499 xqltnle 10504 modqelico 10573 mulqaddmodid 10603 addmodid 10611 elicc4abs 11626 xrmaxiflemcl 11777 fprodge1 12171 pcxcl 12855 pcdvdsb 12864 pcaddlem 12883 pcadd 12884 xblss2ps 15099 xblss2 15100 blss2ps 15101 blss2 15102 blhalf 15103 cnblcld 15230 ioo2blex 15247 tgioo 15249 cnopnap 15306 suplociccreex 15319 suplociccex 15320 dedekindicc 15328 ivthinclemlm 15329 ivthinclemum 15330 ivthinclemlopn 15331 ivthinclemuopn 15333 ivthdec 15339 ivthreinc 15340 sin0pilem2 15477 pilem3 15478 vtxdgfifival 16077 |
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