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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 8201 | . 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 8009 ℝ*cxr 8191 |
| 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 8196 |
| This theorem is referenced by: xnn0xr 9448 rpxr 9869 rpxrd 9905 xnn0dcle 10010 xnegcl 10040 xaddf 10052 xaddval 10053 xnn0lenn0nn0 10073 xposdif 10090 iooshf 10160 icoshftf1o 10199 ioo0 10491 ioom 10492 ico0 10493 ioc0 10494 xqltnle 10499 modqelico 10568 mulqaddmodid 10598 addmodid 10606 elicc4abs 11620 xrmaxiflemcl 11771 fprodge1 12165 pcxcl 12849 pcdvdsb 12858 pcaddlem 12877 pcadd 12878 xblss2ps 15093 xblss2 15094 blss2ps 15095 blss2 15096 blhalf 15097 cnblcld 15224 ioo2blex 15241 tgioo 15243 cnopnap 15300 suplociccreex 15313 suplociccex 15314 dedekindicc 15322 ivthinclemlm 15323 ivthinclemum 15324 ivthinclemlopn 15325 ivthinclemuopn 15327 ivthdec 15333 ivthreinc 15334 sin0pilem2 15471 pilem3 15472 vtxdgfifival 16050 |
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