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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 22972 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 720 | . 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 1560 ∈ wcel 2142 ∪ cuni 4865 ‘cfv 6521 Topctop 22953 TopOnctopon 22970 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-iota 6477 df-fun 6523 df-fv 6529 df-topon 22971 |
| This theorem is referenced by: toptopon2 22978 eltpsi 23004 restuni 23222 stoig 23223 restlp 23243 restperf 23244 perfopn 23245 iscn2 23298 iscnp2 23299 cncnpi 23338 cncnp2 23341 cnnei 23342 cnrest 23345 cnpresti 23348 cnprest 23349 cnprest2 23350 paste 23354 t1sep2 23429 sshauslem 23432 1stcelcls 23521 kgenuni 23599 iskgen3 23609 txuni 23652 ptuniconst 23658 txcnmpt 23684 txcn 23686 txindis 23694 ptrescn 23699 txcmpb 23704 xkoptsub 23714 xkofvcn 23744 imasnopn 23750 imasncld 23751 imasncls 23752 qtopcmplem 23767 qtopkgen 23770 hmeof1o 23824 hmeores 23831 hmphindis 23857 cmphaushmeo 23860 txhmeo 23863 ptunhmeo 23868 hausflim 24041 flfneii 24052 hausflf 24057 flimfnfcls 24088 flfcntr 24103 cnextfun 24124 cnextfvval 24125 cnextf 24126 cnextcn 24127 cnextfres1 24128 retopon 24823 evth 25021 evth2 25022 qtophaus 34133 rrhre 34318 pconnconn 35581 connpconn 35585 pconnpi1 35587 sconnpi1 35589 txsconnlem 35590 txsconn 35591 cvmsf1o 35622 cvmliftmolem1 35631 cvmliftlem8 35642 cvmlift2lem9a 35653 cvmlift2lem9 35661 cvmlift2lem11 35663 cvmlift2lem12 35664 cvmliftphtlem 35667 cvmlift3lem6 35674 cvmlift3lem8 35676 cvmlift3lem9 35677 cnres2 38262 cnresima 38263 hausgraph 43782 ntrf2 44700 fcnre 45605 |
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