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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 8206 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 1 | sseli 3220 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2200 ℝcr 8014 ℝ*cxr 8196 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-xr 8201 |
| This theorem is referenced by: rexri 8220 lenlt 8238 ltpnf 9993 mnflt 9996 xrltnsym 10006 xrlttr 10008 xrltso 10009 xrre 10033 xrre3 10035 xltnegi 10048 rexadd 10065 xaddnemnf 10070 xaddnepnf 10071 xaddcom 10074 xnegdi 10081 xpncan 10084 xnpcan 10085 xleadd1a 10086 xleadd1 10088 xltadd1 10089 xltadd2 10090 xsubge0 10094 xposdif 10095 elioo4g 10147 elioc2 10149 elico2 10150 elicc2 10151 iccss 10154 iooshf 10165 iooneg 10201 icoshft 10203 qbtwnxr 10494 modqmuladdim 10606 elicc4abs 11626 icodiamlt 11712 xrmaxrecl 11787 xrmaxaddlem 11792 xrminrecl 11805 bl2in 15098 blssps 15122 blss 15123 reopnap 15241 bl2ioo 15245 blssioo 15248 sincosq2sgn 15522 sincosq3sgn 15523 sincos6thpi 15537 |
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