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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 8223 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3225 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 ℝcr 8031 ℝ*cxr 8213 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-xr 8218 |
| This theorem is referenced by: xnn0xr 9470 rpxr 9896 rpxrd 9932 xnn0dcle 10037 xnegcl 10067 xaddf 10079 xaddval 10080 xnn0lenn0nn0 10100 xposdif 10117 iooshf 10187 icoshftf1o 10226 ioo0 10520 ioom 10521 ico0 10522 ioc0 10523 xqltnle 10528 modqelico 10597 mulqaddmodid 10627 addmodid 10635 elicc4abs 11659 xrmaxiflemcl 11810 fprodge1 12205 pcxcl 12889 pcdvdsb 12898 pcaddlem 12917 pcadd 12918 xblss2ps 15134 xblss2 15135 blss2ps 15136 blss2 15137 blhalf 15138 cnblcld 15265 ioo2blex 15282 tgioo 15284 cnopnap 15341 suplociccreex 15354 suplociccex 15355 dedekindicc 15363 ivthinclemlm 15364 ivthinclemum 15365 ivthinclemlopn 15366 ivthinclemuopn 15368 ivthdec 15374 ivthreinc 15375 sin0pilem2 15512 pilem3 15513 vtxdgfifival 16148 |
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