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| Mirrors > Home > MPE Home > Th. List > toptopon | Structured version Visualization version GIF version | ||
| Description: Alternative definition of Top in terms of TopOn. (Contributed by Mario Carneiro, 13-Aug-2015.) |
| Ref | Expression |
|---|---|
| toptopon.1 | ⊢ 𝑋 = ∪ 𝐽 |
| Ref | Expression |
|---|---|
| toptopon | ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | toptopon.1 | . . 3 ⊢ 𝑋 = ∪ 𝐽 | |
| 2 | istopon 22854 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 710 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
| 4 | 3 | bicomi 224 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 = wceq 1541 ∈ wcel 2113 ∪ cuni 4861 ‘cfv 6490 Topctop 22835 TopOnctopon 22852 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-mpt 5178 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-iota 6446 df-fun 6492 df-fv 6498 df-topon 22853 |
| This theorem is referenced by: toptopon2 22860 eltpsi 22886 restuni 23104 stoig 23105 restlp 23125 restperf 23126 perfopn 23127 iscn2 23180 iscnp2 23181 cncnpi 23220 cncnp2 23223 cnnei 23224 cnrest 23227 cnpresti 23230 cnprest 23231 cnprest2 23232 paste 23236 t1sep2 23311 sshauslem 23314 1stcelcls 23403 kgenuni 23481 iskgen3 23491 txuni 23534 ptuniconst 23540 txcnmpt 23566 txcn 23568 txindis 23576 ptrescn 23581 txcmpb 23586 xkoptsub 23596 xkofvcn 23626 imasnopn 23632 imasncld 23633 imasncls 23634 qtopcmplem 23649 qtopkgen 23652 hmeof1o 23706 hmeores 23713 hmphindis 23739 cmphaushmeo 23742 txhmeo 23745 ptunhmeo 23750 hausflim 23923 flfneii 23934 hausflf 23939 flimfnfcls 23970 flfcntr 23985 cnextfun 24006 cnextfvval 24007 cnextf 24008 cnextcn 24009 cnextfres1 24010 retopon 24705 evth 24912 evth2 24913 qtophaus 33942 rrhre 34127 pconnconn 35374 connpconn 35378 pconnpi1 35380 sconnpi1 35382 txsconnlem 35383 txsconn 35384 cvmsf1o 35415 cvmliftmolem1 35424 cvmliftlem8 35435 cvmlift2lem9a 35446 cvmlift2lem9 35454 cvmlift2lem11 35456 cvmlift2lem12 35457 cvmliftphtlem 35460 cvmlift3lem6 35467 cvmlift3lem8 35469 cvmlift3lem9 35470 cnres2 37903 cnresima 37904 hausgraph 43389 ntrf2 44307 fcnre 45212 |
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