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| Mirrors > Home > ILE Home > Th. List > rexr | GIF version | ||
| Description: A standard real is an extended real. (Contributed by NM, 14-Oct-2005.) |
| Ref | Expression |
|---|---|
| rexr | ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressxr 8363 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 1 | sseli 3244 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2209 ℝcr 8172 ℝ*cxr 8353 |
| 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 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 theorem 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 8358 |
| This theorem is referenced by: rexri 8377 lenlt 8395 ltpnf 10165 mnflt 10168 xrltnsym 10178 xrlttr 10180 xrltso 10181 xrre 10205 xrre3 10207 xltnegi 10220 rexadd 10237 xaddnemnf 10242 xaddnepnf 10243 xaddcom 10246 xnegdi 10253 xpncan 10256 xnpcan 10257 xleadd1a 10258 xleadd1 10260 xltadd1 10261 xltadd2 10262 xsubge0 10266 xposdif 10267 elioo4g 10319 elioc2 10321 elico2 10322 elicc2 10323 iccss 10326 iooshf 10337 iooneg 10373 icoshft 10375 qbtwnxr 10675 modqmuladdim 10787 elicc4abs 11843 icodiamlt 11929 xrmaxrecl 12004 xrmaxaddlem 12009 xrminrecl 12022 bl2in 15487 blssps 15511 blss 15512 reopnap 15630 bl2ioo 15634 blssioo 15637 sincosq2sgn 15911 sincosq3sgn 15912 sincos6thpi 15926 |
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