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| Mirrors > Home > ILE Home > Th. List > toponuni | Unicode version | ||
| Description: The base set of a topology on a given base set. (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| toponuni |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | istopon 15236 |
. 2
| |
| 2 | 1 | simprbi 275 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-mpt 4195 df-id 4440 df-xp 4782 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-iota 5340 df-fun 5382 df-fv 5388 df-topon 15234 |
| This theorem is used by: toponunii 15240 toponmax 15248 toponss 15249 toponcom 15250 topgele 15252 topontopn 15260 restuni 15395 resttopon2 15401 lmfval 15416 cnfval 15417 cnpfval 15418 cnprcl2k 15429 ssidcn 15433 iscnp4 15441 cnntr 15448 cncnp 15453 cnptopresti 15461 txtopon 15485 txuni 15486 cnmpt1t 15508 cnmpt2t 15516 cnmpt1res 15519 cnmpt2res 15520 mopnuni 15668 isxms2 15675 limccnp2lem 15899 limccnp2cntop 15900 dvfvalap 15904 dvbss 15908 dvfgg 15911 dvcnp2cntop 15922 dvaddxxbr 15924 dvmulxxbr 15925 |
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