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Mirrors > Home > MPE Home > Th. List > topontop | Structured version Visualization version GIF version |
Description: A topology on a given base set is a topology. (Contributed by Mario Carneiro, 13-Aug-2015.) |
Ref | Expression |
---|---|
topontop | ⊢ (𝐽 ∈ (TopOn‘𝐵) → 𝐽 ∈ Top) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | istopon 20540 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝐵) ↔ (𝐽 ∈ Top ∧ 𝐵 = ∪ 𝐽)) | |
2 | 1 | simplbi 475 | 1 ⊢ (𝐽 ∈ (TopOn‘𝐵) → 𝐽 ∈ Top) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1475 ∈ wcel 1977 ∪ cuni 4372 ‘cfv 5804 Topctop 20517 TopOnctopon 20518 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-iota 5768 df-fun 5806 df-fv 5812 df-topon 20523 |
This theorem is referenced by: toponmax 20543 topontopi 20546 topgele 20549 istps 20551 en2top 20600 pptbas 20622 toponmre 20707 cldmreon 20708 iscldtop 20709 neiptopreu 20747 resttopon 20775 resttopon2 20782 restlp 20797 restperf 20798 perfopn 20799 ordtopn3 20810 ordtcld1 20811 ordtcld2 20812 ordttop 20814 lmfval 20846 cnfval 20847 cnpfval 20848 tgcn 20866 tgcnp 20867 subbascn 20868 iscnp4 20877 iscncl 20883 cncls2 20887 cncls 20888 cnntr 20889 cncnp 20894 cnindis 20906 lmcls 20916 iscnrm2 20952 ist0-2 20958 ist1-2 20961 ishaus2 20965 hausnei2 20967 isreg2 20991 sscmp 21018 dfcon2 21032 clscon 21043 concompcld 21047 1stccnp 21075 locfincf 21144 kgenval 21148 kgenftop 21153 1stckgenlem 21166 kgen2ss 21168 txtopon 21204 pttopon 21209 txcls 21217 ptclsg 21228 dfac14lem 21230 xkoccn 21232 txcnp 21233 ptcnplem 21234 txlm 21261 cnmpt2res 21290 cnmptkp 21293 cnmptk1 21294 cnmpt1k 21295 cnmptkk 21296 cnmptk1p 21298 cnmptk2 21299 xkoinjcn 21300 qtoptopon 21317 qtopcld 21326 qtoprest 21330 qtopcmap 21332 kqval 21339 regr1lem 21352 kqreglem1 21354 kqreglem2 21355 kqnrmlem1 21356 kqnrmlem2 21357 kqtop 21358 pt1hmeo 21419 xpstopnlem1 21422 xkohmeo 21428 neifil 21494 trnei 21506 elflim 21585 flimss1 21587 flimopn 21589 fbflim2 21591 flimcf 21596 flimclslem 21598 flffval 21603 flfnei 21605 flftg 21610 cnpflf2 21614 isfcls2 21627 fclsopn 21628 fclsnei 21633 fclscf 21639 fclscmp 21644 fcfval 21647 fcfnei 21649 cnpfcf 21655 tgpmulg2 21708 tmdgsum 21709 tmdgsum2 21710 subgntr 21720 opnsubg 21721 clssubg 21722 clsnsg 21723 cldsubg 21724 snclseqg 21729 tgphaus 21730 qustgpopn 21733 prdstgpd 21738 tsmsgsum 21752 tsmsid 21753 tgptsmscld 21764 mopntop 22055 metdseq0 22465 cnmpt2pc 22535 ishtpy 22579 om1val 22638 pi1val 22645 csscld 22856 clsocv 22857 relcmpcmet 22923 bcth2 22935 limcres 23456 perfdvf 23473 dvaddbr 23507 dvmulbr 23508 dvcmulf 23514 dvmptres2 23531 dvmptcmul 23533 dvmptntr 23540 dvcnvlem 23543 lhop2 23582 lhop 23583 dvcnvrelem2 23585 taylthlem1 23931 neibastop2 31526 neibastop3 31527 topjoin 31530 bj-topontopon 32235 bj-toprntopon 32244 dissneqlem 32363 istopclsd 36281 dvresntr 38806 |
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