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Mirrors > Home > ILE Home > Th. List > 0xr | GIF version |
Description: Zero is an extended real. (Contributed by Mario Carneiro, 15-Jun-2014.) |
Ref | Expression |
---|---|
0xr | ⊢ 0 ∈ ℝ* |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ressxr 7833 | . 2 ⊢ ℝ ⊆ ℝ* | |
2 | 0re 7790 | . 2 ⊢ 0 ∈ ℝ | |
3 | 1, 2 | sselii 3099 | 1 ⊢ 0 ∈ ℝ* |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1481 ℝcr 7643 0cc0 7644 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 ax-1re 7738 ax-addrcl 7741 ax-rnegex 7753 |
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-ral 2422 df-rex 2423 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-xr 7828 |
This theorem is referenced by: 0lepnf 9606 ge0gtmnf 9636 xlt0neg1 9651 xlt0neg2 9652 xle0neg1 9653 xle0neg2 9654 xaddf 9657 xaddval 9658 xaddid1 9675 xaddid2 9676 xnn0xadd0 9680 xaddge0 9691 xsubge0 9694 xposdif 9695 ioopos 9763 elxrge0 9791 0e0iccpnf 9793 xrmaxadd 11062 xrminrpcl 11075 xrbdtri 11077 ef01bndlem 11499 sin01bnd 11500 cos01bnd 11501 cos1bnd 11502 sin01gt0 11504 cos01gt0 11505 sin02gt0 11506 sincos1sgn 11507 sincos2sgn 11508 cos12dec 11510 halfleoddlt 11627 psmetge0 12539 isxmet2d 12556 xmetge0 12573 blgt0 12610 xblss2ps 12612 xblss2 12613 xblm 12625 bdxmet 12709 bdmet 12710 bdmopn 12712 xmetxp 12715 cnblcld 12743 blssioo 12753 reeff1oleme 12901 reeff1o 12902 sin0pilem1 12910 sin0pilem2 12911 pilem3 12912 sinhalfpilem 12920 sincosq1lem 12954 sincosq1sgn 12955 sincosq2sgn 12956 sinq12gt0 12959 cosq14gt0 12961 tangtx 12967 sincos4thpi 12969 pigt3 12973 cosordlem 12978 cosq34lt1 12979 cos02pilt1 12980 cos0pilt1 12981 iooref1o 13426 taupi 13430 |
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