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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 22856 | . . 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 4863 ‘cfv 6492 Topctop 22837 TopOnctopon 22854 |
| 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 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-iota 6448 df-fun 6494 df-fv 6500 df-topon 22855 |
| This theorem is referenced by: toptopon2 22862 eltpsi 22888 restuni 23106 stoig 23107 restlp 23127 restperf 23128 perfopn 23129 iscn2 23182 iscnp2 23183 cncnpi 23222 cncnp2 23225 cnnei 23226 cnrest 23229 cnpresti 23232 cnprest 23233 cnprest2 23234 paste 23238 t1sep2 23313 sshauslem 23316 1stcelcls 23405 kgenuni 23483 iskgen3 23493 txuni 23536 ptuniconst 23542 txcnmpt 23568 txcn 23570 txindis 23578 ptrescn 23583 txcmpb 23588 xkoptsub 23598 xkofvcn 23628 imasnopn 23634 imasncld 23635 imasncls 23636 qtopcmplem 23651 qtopkgen 23654 hmeof1o 23708 hmeores 23715 hmphindis 23741 cmphaushmeo 23744 txhmeo 23747 ptunhmeo 23752 hausflim 23925 flfneii 23936 hausflf 23941 flimfnfcls 23972 flfcntr 23987 cnextfun 24008 cnextfvval 24009 cnextf 24010 cnextcn 24011 cnextfres1 24012 retopon 24707 evth 24914 evth2 24915 qtophaus 33993 rrhre 34178 pconnconn 35425 connpconn 35429 pconnpi1 35431 sconnpi1 35433 txsconnlem 35434 txsconn 35435 cvmsf1o 35466 cvmliftmolem1 35475 cvmliftlem8 35486 cvmlift2lem9a 35497 cvmlift2lem9 35505 cvmlift2lem11 35507 cvmlift2lem12 35508 cvmliftphtlem 35511 cvmlift3lem6 35518 cvmlift3lem8 35520 cvmlift3lem9 35521 cnres2 37964 cnresima 37965 hausgraph 43447 ntrf2 44365 fcnre 45270 |
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