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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 8213 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3223 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 ℝcr 8021 ℝ*cxr 8203 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-xr 8208 |
| This theorem is referenced by: xnn0xr 9460 rpxr 9886 rpxrd 9922 xnn0dcle 10027 xnegcl 10057 xaddf 10069 xaddval 10070 xnn0lenn0nn0 10090 xposdif 10107 iooshf 10177 icoshftf1o 10216 ioo0 10509 ioom 10510 ico0 10511 ioc0 10512 xqltnle 10517 modqelico 10586 mulqaddmodid 10616 addmodid 10624 elicc4abs 11645 xrmaxiflemcl 11796 fprodge1 12190 pcxcl 12874 pcdvdsb 12883 pcaddlem 12902 pcadd 12903 xblss2ps 15118 xblss2 15119 blss2ps 15120 blss2 15121 blhalf 15122 cnblcld 15249 ioo2blex 15266 tgioo 15268 cnopnap 15325 suplociccreex 15338 suplociccex 15339 dedekindicc 15347 ivthinclemlm 15348 ivthinclemum 15349 ivthinclemlopn 15350 ivthinclemuopn 15352 ivthdec 15358 ivthreinc 15359 sin0pilem2 15496 pilem3 15497 vtxdgfifival 16097 |
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