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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 23037 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 722 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
| 4 | 3 | bicomi 227 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 = wceq 1567 ∈ wcel 2149 ∪ cuni 4876 ‘cfv 6537 Topctop 23018 TopOnctopon 23035 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pow 5337 ax-pr 5405 ax-un 7733 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-mpt 5197 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-iota 6493 df-fun 6539 df-fv 6545 df-topon 23036 |
| This theorem is referenced by: toptopon2 23043 eltpsi 23069 restuni 23287 stoig 23288 restlp 23308 restperf 23309 perfopn 23310 iscn2 23363 iscnp2 23364 cncnpi 23403 cncnp2 23406 cnnei 23407 cnrest 23410 cnpresti 23413 cnprest 23414 cnprest2 23415 paste 23419 t1sep2 23494 sshauslem 23497 1stcelcls 23586 kgenuni 23664 iskgen3 23674 txuni 23717 ptuniconst 23723 txcnmpt 23749 txcn 23751 txindis 23759 ptrescn 23764 txcmpb 23769 xkoptsub 23779 xkofvcn 23809 imasnopn 23815 imasncld 23816 imasncls 23817 qtopcmplem 23832 qtopkgen 23835 hmeof1o 23889 hmeores 23896 hmphindis 23922 cmphaushmeo 23925 txhmeo 23928 ptunhmeo 23933 hausflim 24106 flfneii 24117 hausflf 24122 flimfnfcls 24153 flfcntr 24168 cnextfun 24189 cnextfvval 24190 cnextf 24191 cnextcn 24192 cnextfres1 24193 retopon 24888 evth 25086 evth2 25087 qtophaus 34170 rrhre 34355 pconnconn 35621 connpconn 35625 pconnpi1 35627 sconnpi1 35629 txsconnlem 35630 txsconn 35631 cvmsf1o 35662 cvmliftmolem1 35671 cvmliftlem8 35682 cvmlift2lem9a 35693 cvmlift2lem9 35701 cvmlift2lem11 35703 cvmlift2lem12 35704 cvmliftphtlem 35707 cvmlift3lem6 35714 cvmlift3lem8 35716 cvmlift3lem9 35717 cnres2 38301 cnresima 38302 hausgraph 43823 ntrf2 44741 fcnre 45636 |
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