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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 8228 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 1 | sseli 3222 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2201 ℝcr 8036 ℝ*cxr 8218 |
| 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 2212 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1810 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-v 2803 df-un 3203 df-in 3205 df-ss 3212 df-xr 8223 |
| This theorem is referenced by: rexri 8242 lenlt 8260 ltpnf 10020 mnflt 10023 xrltnsym 10033 xrlttr 10035 xrltso 10036 xrre 10060 xrre3 10062 xltnegi 10075 rexadd 10092 xaddnemnf 10097 xaddnepnf 10098 xaddcom 10101 xnegdi 10108 xpncan 10111 xnpcan 10112 xleadd1a 10113 xleadd1 10115 xltadd1 10116 xltadd2 10117 xsubge0 10121 xposdif 10122 elioo4g 10174 elioc2 10176 elico2 10177 elicc2 10178 iccss 10181 iooshf 10192 iooneg 10228 icoshft 10230 qbtwnxr 10523 modqmuladdim 10635 elicc4abs 11677 icodiamlt 11763 xrmaxrecl 11838 xrmaxaddlem 11843 xrminrecl 11856 bl2in 15156 blssps 15180 blss 15181 reopnap 15299 bl2ioo 15303 blssioo 15306 sincosq2sgn 15580 sincosq3sgn 15581 sincos6thpi 15595 |
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