| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ressxr 8333 |
. 2
| |
| 2 | 0re 8290 |
. 2
| |
| 3 | 1, 2 | sselii 3239 |
1
|
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 ax-1re 8237 ax-addrcl 8240 ax-rnegex 8252 |
| This theorem depends on definitions: df-bi 117 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-xr 8328 |
| This theorem is referenced by: 0lepnf 10142 ge0gtmnf 10175 xlt0neg1 10190 xlt0neg2 10191 xle0neg1 10192 xle0neg2 10193 xaddf 10196 xaddval 10197 xaddid1 10214 xaddid2 10215 xnn0xadd0 10219 xaddge0 10230 xsubge0 10233 xposdif 10234 ioopos 10302 elxrge0 10330 0e0iccpnf 10332 dfrp2 10647 xrmaxadd 11971 xrminrpcl 11984 xrbdtri 11986 fprodge0 12348 ef01bndlem 12467 sin01bnd 12468 cos01bnd 12469 cos1bnd 12470 sinltxirr 12472 sin01gt0 12473 cos01gt0 12474 sin02gt0 12475 sincos1sgn 12476 sincos2sgn 12477 cos12dec 12479 halfleoddlt 12605 psmetge0 15322 isxmet2d 15339 xmetge0 15356 blgt0 15393 xblss2ps 15395 xblss2 15396 xblm 15408 bdxmet 15492 bdmet 15493 bdmopn 15495 xmetxp 15498 cnblcld 15526 blssioo 15544 reeff1oleme 15763 reeff1o 15764 sin0pilem1 15772 sin0pilem2 15773 pilem3 15774 sinhalfpilem 15782 sincosq1lem 15816 sincosq1sgn 15817 sincosq2sgn 15818 sinq12gt0 15821 cosq14gt0 15823 tangtx 15829 sincos4thpi 15831 pigt3 15835 cosordlem 15840 cosq34lt1 15841 cos02pilt1 15842 cos0pilt1 15843 repiecelem 16935 repiecege0 16937 iooref1o 16944 taupi 16985 |
| Copyright terms: Public domain | W3C validator |