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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 8375 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | rexrd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ) | |
| 3 | 1, 2 | sselid 3246 | 1 ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ℝcr 8184 ℝ*cxr 8365 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-xr 8370 |
| This theorem is used by: xnn0xr 9644 rpxr 10078 rpxrd 10114 xnn0dcle 10220 xnegcl 10250 xaddf 10262 xaddval 10263 xnn0lenn0nn0 10283 xposdif 10300 iooshf 10370 icoshftf1o 10409 ioo0 10710 ioom 10711 ico0 10712 ioc0 10713 xqltnle 10718 modqelico 10791 mulqaddmodid 10821 addmodid 10829 elicc4abs 11882 xrmaxiflemcl 12035 fprodge1 12430 pcxcl 13118 pcdvdsb 13127 pcaddlem 13146 pcadd 13147 xblss2ps 15647 xblss2 15648 blss2ps 15649 blss2 15650 blhalf 15651 cnblcld 15778 ioo2blex 15795 tgioo 15797 cnopnap 15854 suplociccreex 15867 suplociccex 15868 dedekindicc 15876 ivthinclemlm 15877 ivthinclemum 15878 ivthinclemlopn 15879 ivthinclemuopn 15881 ivthdec 15887 ivthreinc 15888 sin0pilem2 16026 pilem3 16027 vtxdgfifival 16754 |
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