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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 8319 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 1 | sseli 3236 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2205 ℝcr 8128 ℝ*cxr 8309 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-v 2817 df-un 3217 df-in 3219 df-ss 3226 df-xr 8314 |
| This theorem is referenced by: rexri 8333 lenlt 8351 ltpnf 10116 mnflt 10119 xrltnsym 10129 xrlttr 10131 xrltso 10132 xrre 10156 xrre3 10158 xltnegi 10171 rexadd 10188 xaddnemnf 10193 xaddnepnf 10194 xaddcom 10197 xnegdi 10204 xpncan 10207 xnpcan 10208 xleadd1a 10209 xleadd1 10211 xltadd1 10212 xltadd2 10213 xsubge0 10217 xposdif 10218 elioo4g 10270 elioc2 10272 elico2 10273 elicc2 10274 iccss 10277 iooshf 10288 iooneg 10324 icoshft 10326 qbtwnxr 10621 modqmuladdim 10733 elicc4abs 11783 icodiamlt 11869 xrmaxrecl 11944 xrmaxaddlem 11949 xrminrecl 11962 bl2in 15285 blssps 15309 blss 15310 reopnap 15428 bl2ioo 15432 blssioo 15435 sincosq2sgn 15709 sincosq3sgn 15710 sincos6thpi 15724 |
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