| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 22873 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 711 | . 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 1542 ∈ wcel 2114 ∪ cuni 4865 ‘cfv 6502 Topctop 22854 TopOnctopon 22871 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pow 5314 ax-pr 5381 ax-un 7692 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5529 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-iota 6458 df-fun 6504 df-fv 6510 df-topon 22872 |
| This theorem is referenced by: toptopon2 22879 eltpsi 22905 restuni 23123 stoig 23124 restlp 23144 restperf 23145 perfopn 23146 iscn2 23199 iscnp2 23200 cncnpi 23239 cncnp2 23242 cnnei 23243 cnrest 23246 cnpresti 23249 cnprest 23250 cnprest2 23251 paste 23255 t1sep2 23330 sshauslem 23333 1stcelcls 23422 kgenuni 23500 iskgen3 23510 txuni 23553 ptuniconst 23559 txcnmpt 23585 txcn 23587 txindis 23595 ptrescn 23600 txcmpb 23605 xkoptsub 23615 xkofvcn 23645 imasnopn 23651 imasncld 23652 imasncls 23653 qtopcmplem 23668 qtopkgen 23671 hmeof1o 23725 hmeores 23732 hmphindis 23758 cmphaushmeo 23761 txhmeo 23764 ptunhmeo 23769 hausflim 23942 flfneii 23953 hausflf 23958 flimfnfcls 23989 flfcntr 24004 cnextfun 24025 cnextfvval 24026 cnextf 24027 cnextcn 24028 cnextfres1 24029 retopon 24724 evth 24931 evth2 24932 qtophaus 34020 rrhre 34205 pconnconn 35453 connpconn 35457 pconnpi1 35459 sconnpi1 35461 txsconnlem 35462 txsconn 35463 cvmsf1o 35494 cvmliftmolem1 35503 cvmliftlem8 35514 cvmlift2lem9a 35525 cvmlift2lem9 35533 cvmlift2lem11 35535 cvmlift2lem12 35536 cvmliftphtlem 35539 cvmlift3lem6 35546 cvmlift3lem8 35548 cvmlift3lem9 35549 cnres2 38043 cnresima 38044 hausgraph 43591 ntrf2 44509 fcnre 45414 |
| Copyright terms: Public domain | W3C validator |