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| Mirrors > Home > ILE Home > Th. List > topontop | Unicode version | ||
| Description: A topology on a given base set is a topology. (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| topontop |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | istopon 14824 |
. 2
| |
| 2 | 1 | simplbi 274 |
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-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-sbc 3033 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-iota 5293 df-fun 5335 df-fv 5341 df-topon 14822 |
| This theorem is referenced by: topontopi 14827 topontopon 14831 toponmax 14836 topgele 14840 istps 14843 topontopn 14848 resttopon 14982 resttopon2 14989 lmfval 15004 cnfval 15005 cnpfval 15006 cnprcl2k 15017 cnpf2 15018 tgcn 15019 tgcnp 15020 iscnp4 15029 cnntr 15036 cncnp 15041 cnptopresti 15049 txtopon 15073 txcnp 15082 txlm 15090 cnmpt2res 15108 mopntop 15255 metcnpi 15326 metcnpi3 15328 dvfvalap 15492 dvfgg 15499 dvaddxxbr 15512 dvmulxxbr 15513 |
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