| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8211 | . 2 ⊢ ℝ ⊆ ℝ* | |
| 2 | 0re 8167 | . 2 ⊢ 0 ∈ ℝ | |
| 3 | 1, 2 | sselii 3222 | 1 ⊢ 0 ∈ ℝ* |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 ℝcr 8019 0cc0 8020 ℝ*cxr 8201 |
| 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 ax-1re 8114 ax-addrcl 8117 ax-rnegex 8129 |
| 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-ral 2513 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-xr 8206 |
| This theorem is referenced by: 0lepnf 10013 ge0gtmnf 10046 xlt0neg1 10061 xlt0neg2 10062 xle0neg1 10063 xle0neg2 10064 xaddf 10067 xaddval 10068 xaddid1 10085 xaddid2 10086 xnn0xadd0 10090 xaddge0 10101 xsubge0 10104 xposdif 10105 ioopos 10173 elxrge0 10201 0e0iccpnf 10203 dfrp2 10511 xrmaxadd 11809 xrminrpcl 11822 xrbdtri 11824 fprodge0 12185 ef01bndlem 12304 sin01bnd 12305 cos01bnd 12306 cos1bnd 12307 sinltxirr 12309 sin01gt0 12310 cos01gt0 12311 sin02gt0 12312 sincos1sgn 12313 sincos2sgn 12314 cos12dec 12316 halfleoddlt 12442 psmetge0 15042 isxmet2d 15059 xmetge0 15076 blgt0 15113 xblss2ps 15115 xblss2 15116 xblm 15128 bdxmet 15212 bdmet 15213 bdmopn 15215 xmetxp 15218 cnblcld 15246 blssioo 15264 reeff1oleme 15483 reeff1o 15484 sin0pilem1 15492 sin0pilem2 15493 pilem3 15494 sinhalfpilem 15502 sincosq1lem 15536 sincosq1sgn 15537 sincosq2sgn 15538 sinq12gt0 15541 cosq14gt0 15543 tangtx 15549 sincos4thpi 15551 pigt3 15555 cosordlem 15560 cosq34lt1 15561 cos02pilt1 15562 cos0pilt1 15563 iooref1o 16548 taupi 16587 |
| Copyright terms: Public domain | W3C validator |