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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 21514 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
3 | 1, 2 | mpbiran2 708 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
4 | 3 | bicomi 226 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 208 = wceq 1533 ∈ wcel 2110 ∪ cuni 4831 ‘cfv 6349 Topctop 21495 TopOnctopon 21512 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pow 5258 ax-pr 5321 ax-un 7455 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-br 5059 df-opab 5121 df-mpt 5139 df-id 5454 df-xp 5555 df-rel 5556 df-cnv 5557 df-co 5558 df-dm 5559 df-iota 6308 df-fun 6351 df-fv 6357 df-topon 21513 |
This theorem is referenced by: toptopon2 21520 eltpsi 21546 restuni 21764 stoig 21765 restlp 21785 restperf 21786 perfopn 21787 iscn2 21840 iscnp2 21841 cncnpi 21880 cncnp2 21883 cnnei 21884 cnrest 21887 cnpresti 21890 cnprest 21891 cnprest2 21892 paste 21896 t1sep2 21971 sshauslem 21974 1stcelcls 22063 kgenuni 22141 iskgen3 22151 txuni 22194 ptuniconst 22200 txcnmpt 22226 txcn 22228 txindis 22236 ptrescn 22241 txcmpb 22246 xkoptsub 22256 xkofvcn 22286 imasnopn 22292 imasncld 22293 imasncls 22294 qtopcmplem 22309 qtopkgen 22312 hmeof1o 22366 hmeores 22373 hmphindis 22399 cmphaushmeo 22402 txhmeo 22405 ptunhmeo 22410 hausflim 22583 flfneii 22594 hausflf 22599 flimfnfcls 22630 flfcntr 22645 cnextfun 22666 cnextfvval 22667 cnextf 22668 cnextcn 22669 cnextfres1 22670 retopon 23366 evth 23557 evth2 23558 qtophaus 31095 rrhre 31257 pconnconn 32473 connpconn 32477 pconnpi1 32479 sconnpi1 32481 txsconnlem 32482 txsconn 32483 cvxsconn 32485 cvmsf1o 32514 cvmliftmolem1 32523 cvmliftlem8 32534 cvmlift2lem9a 32545 cvmlift2lem9 32553 cvmlift2lem11 32555 cvmlift2lem12 32556 cvmliftphtlem 32559 cvmlift3lem6 32566 cvmlift3lem8 32568 cvmlift3lem9 32569 cnres2 35035 cnresima 35036 hausgraph 39805 ntrf2 40467 fcnre 41275 |
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