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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 8369 | . 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 8178 ℝ*cxr 8359 |
| 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 8364 |
| This theorem is used by: xnn0xr 9639 rpxr 10072 rpxrd 10108 xnn0dcle 10214 xnegcl 10244 xaddf 10256 xaddval 10257 xnn0lenn0nn0 10277 xposdif 10294 iooshf 10364 icoshftf1o 10403 ioo0 10704 ioom 10705 ico0 10706 ioc0 10707 xqltnle 10712 modqelico 10784 mulqaddmodid 10814 addmodid 10822 elicc4abs 11875 xrmaxiflemcl 12027 fprodge1 12422 pcxcl 13110 pcdvdsb 13119 pcaddlem 13138 pcadd 13139 xblss2ps 15554 xblss2 15555 blss2ps 15556 blss2 15557 blhalf 15558 cnblcld 15685 ioo2blex 15702 tgioo 15704 cnopnap 15761 suplociccreex 15774 suplociccex 15775 dedekindicc 15783 ivthinclemlm 15784 ivthinclemum 15785 ivthinclemlopn 15786 ivthinclemuopn 15788 ivthdec 15794 ivthreinc 15795 sin0pilem2 15933 pilem3 15934 vtxdgfifival 16630 |
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