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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 8222 | . 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 8030 ℝ*cxr 8212 |
| 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 8217 |
| This theorem is referenced by: xnn0xr 9469 rpxr 9895 rpxrd 9931 xnn0dcle 10036 xnegcl 10066 xaddf 10078 xaddval 10079 xnn0lenn0nn0 10099 xposdif 10116 iooshf 10186 icoshftf1o 10225 ioo0 10518 ioom 10519 ico0 10520 ioc0 10521 xqltnle 10526 modqelico 10595 mulqaddmodid 10625 addmodid 10633 elicc4abs 11654 xrmaxiflemcl 11805 fprodge1 12199 pcxcl 12883 pcdvdsb 12892 pcaddlem 12911 pcadd 12912 xblss2ps 15127 xblss2 15128 blss2ps 15129 blss2 15130 blhalf 15131 cnblcld 15258 ioo2blex 15275 tgioo 15277 cnopnap 15334 suplociccreex 15347 suplociccex 15348 dedekindicc 15356 ivthinclemlm 15357 ivthinclemum 15358 ivthinclemlopn 15359 ivthinclemuopn 15361 ivthdec 15367 ivthreinc 15368 sin0pilem2 15505 pilem3 15506 vtxdgfifival 16141 |
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