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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 8223 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 1 | sseli 3223 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2202 ℝcr 8031 ℝ*cxr 8213 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-xr 8218 |
| This theorem is referenced by: rexri 8237 lenlt 8255 ltpnf 10015 mnflt 10018 xrltnsym 10028 xrlttr 10030 xrltso 10031 xrre 10055 xrre3 10057 xltnegi 10070 rexadd 10087 xaddnemnf 10092 xaddnepnf 10093 xaddcom 10096 xnegdi 10103 xpncan 10106 xnpcan 10107 xleadd1a 10108 xleadd1 10110 xltadd1 10111 xltadd2 10112 xsubge0 10116 xposdif 10117 elioo4g 10169 elioc2 10171 elico2 10172 elicc2 10173 iccss 10176 iooshf 10187 iooneg 10223 icoshft 10225 qbtwnxr 10518 modqmuladdim 10630 elicc4abs 11656 icodiamlt 11742 xrmaxrecl 11817 xrmaxaddlem 11822 xrminrecl 11835 bl2in 15130 blssps 15154 blss 15155 reopnap 15273 bl2ioo 15277 blssioo 15280 sincosq2sgn 15554 sincosq3sgn 15555 sincos6thpi 15569 |
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