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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 7833 | . 2 ⊢ ℝ ⊆ ℝ* | |
2 | 1 | sseli 3098 | 1 ⊢ (𝐴 ∈ ℝ → 𝐴 ∈ ℝ*) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∈ wcel 1481 ℝcr 7643 ℝ*cxr 7823 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-tru 1335 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-xr 7828 |
This theorem is referenced by: rexri 7847 lenlt 7864 ltpnf 9597 mnflt 9599 xrltnsym 9609 xrlttr 9611 xrltso 9612 xrre 9633 xrre3 9635 xltnegi 9648 rexadd 9665 xaddnemnf 9670 xaddnepnf 9671 xaddcom 9674 xnegdi 9681 xpncan 9684 xnpcan 9685 xleadd1a 9686 xleadd1 9688 xltadd1 9689 xltadd2 9690 xsubge0 9694 xposdif 9695 elioo4g 9747 elioc2 9749 elico2 9750 elicc2 9751 iccss 9754 iooshf 9765 iooneg 9801 icoshft 9803 qbtwnxr 10066 modqmuladdim 10171 elicc4abs 10898 icodiamlt 10984 xrmaxrecl 11056 xrmaxaddlem 11061 xrminrecl 11074 bl2in 12611 blssps 12635 blss 12636 reopnap 12746 bl2ioo 12750 blssioo 12753 sincosq2sgn 12956 sincosq3sgn 12957 sincos6thpi 12971 |
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