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Mirrors > Home > ILE Home > Th. List > 0xr | Unicode version |
Description: Zero is an extended real. (Contributed by Mario Carneiro, 15-Jun-2014.) |
Ref | Expression |
---|---|
0xr |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ressxr 7995 |
. 2
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2 | 0re 7952 |
. 2
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3 | 1, 2 | sselii 3152 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() |
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 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-ext 2159 ax-1re 7900 ax-addrcl 7903 ax-rnegex 7915 |
This theorem depends on definitions: df-bi 117 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2739 df-un 3133 df-in 3135 df-ss 3142 df-xr 7990 |
This theorem is referenced by: 0lepnf 9784 ge0gtmnf 9817 xlt0neg1 9832 xlt0neg2 9833 xle0neg1 9834 xle0neg2 9835 xaddf 9838 xaddval 9839 xaddid1 9856 xaddid2 9857 xnn0xadd0 9861 xaddge0 9872 xsubge0 9875 xposdif 9876 ioopos 9944 elxrge0 9972 0e0iccpnf 9974 dfrp2 10257 xrmaxadd 11260 xrminrpcl 11273 xrbdtri 11275 fprodge0 11636 ef01bndlem 11755 sin01bnd 11756 cos01bnd 11757 cos1bnd 11758 sin01gt0 11760 cos01gt0 11761 sin02gt0 11762 sincos1sgn 11763 sincos2sgn 11764 cos12dec 11766 halfleoddlt 11889 psmetge0 13613 isxmet2d 13630 xmetge0 13647 blgt0 13684 xblss2ps 13686 xblss2 13687 xblm 13699 bdxmet 13783 bdmet 13784 bdmopn 13786 xmetxp 13789 cnblcld 13817 blssioo 13827 reeff1oleme 13975 reeff1o 13976 sin0pilem1 13984 sin0pilem2 13985 pilem3 13986 sinhalfpilem 13994 sincosq1lem 14028 sincosq1sgn 14029 sincosq2sgn 14030 sinq12gt0 14033 cosq14gt0 14035 tangtx 14041 sincos4thpi 14043 pigt3 14047 cosordlem 14052 cosq34lt1 14053 cos02pilt1 14054 cos0pilt1 14055 iooref1o 14553 taupi 14591 |
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