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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 22895 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 716 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
| 4 | 3 | bicomi 225 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 = wceq 1547 ∈ wcel 2119 ∪ cuni 4838 ‘cfv 6485 Topctop 22876 TopOnctopon 22893 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-iota 6441 df-fun 6487 df-fv 6493 df-topon 22894 |
| This theorem is referenced by: toptopon2 22901 eltpsi 22927 restuni 23145 stoig 23146 restlp 23166 restperf 23167 perfopn 23168 iscn2 23221 iscnp2 23222 cncnpi 23261 cncnp2 23264 cnnei 23265 cnrest 23268 cnpresti 23271 cnprest 23272 cnprest2 23273 paste 23277 t1sep2 23352 sshauslem 23355 1stcelcls 23444 kgenuni 23522 iskgen3 23532 txuni 23575 ptuniconst 23581 txcnmpt 23607 txcn 23609 txindis 23617 ptrescn 23622 txcmpb 23627 xkoptsub 23637 xkofvcn 23667 imasnopn 23673 imasncld 23674 imasncls 23675 qtopcmplem 23690 qtopkgen 23693 hmeof1o 23747 hmeores 23754 hmphindis 23780 cmphaushmeo 23783 txhmeo 23786 ptunhmeo 23791 hausflim 23964 flfneii 23975 hausflf 23980 flimfnfcls 24011 flfcntr 24026 cnextfun 24047 cnextfvval 24048 cnextf 24049 cnextcn 24050 cnextfres1 24051 retopon 24746 evth 24944 evth2 24945 qtophaus 34020 rrhre 34205 pconnconn 35459 connpconn 35463 pconnpi1 35465 sconnpi1 35467 txsconnlem 35468 txsconn 35469 cvmsf1o 35500 cvmliftmolem1 35509 cvmliftlem8 35520 cvmlift2lem9a 35531 cvmlift2lem9 35539 cvmlift2lem11 35541 cvmlift2lem12 35542 cvmliftphtlem 35545 cvmlift3lem6 35552 cvmlift3lem8 35554 cvmlift3lem9 35555 cnres2 38130 cnresima 38131 hausgraph 43650 ntrf2 44568 fcnre 45473 |
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