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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 22868 | . . 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 6500 Topctop 22849 TopOnctopon 22866 |
| 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 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| 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 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-iota 6456 df-fun 6502 df-fv 6508 df-topon 22867 |
| This theorem is referenced by: toptopon2 22874 eltpsi 22900 restuni 23118 stoig 23119 restlp 23139 restperf 23140 perfopn 23141 iscn2 23194 iscnp2 23195 cncnpi 23234 cncnp2 23237 cnnei 23238 cnrest 23241 cnpresti 23244 cnprest 23245 cnprest2 23246 paste 23250 t1sep2 23325 sshauslem 23328 1stcelcls 23417 kgenuni 23495 iskgen3 23505 txuni 23548 ptuniconst 23554 txcnmpt 23580 txcn 23582 txindis 23590 ptrescn 23595 txcmpb 23600 xkoptsub 23610 xkofvcn 23640 imasnopn 23646 imasncld 23647 imasncls 23648 qtopcmplem 23663 qtopkgen 23666 hmeof1o 23720 hmeores 23727 hmphindis 23753 cmphaushmeo 23756 txhmeo 23759 ptunhmeo 23764 hausflim 23937 flfneii 23948 hausflf 23953 flimfnfcls 23984 flfcntr 23999 cnextfun 24020 cnextfvval 24021 cnextf 24022 cnextcn 24023 cnextfres1 24024 retopon 24719 evth 24926 evth2 24927 qtophaus 34014 rrhre 34199 pconnconn 35447 connpconn 35451 pconnpi1 35453 sconnpi1 35455 txsconnlem 35456 txsconn 35457 cvmsf1o 35488 cvmliftmolem1 35497 cvmliftlem8 35508 cvmlift2lem9a 35519 cvmlift2lem9 35527 cvmlift2lem11 35529 cvmlift2lem12 35530 cvmliftphtlem 35533 cvmlift3lem6 35540 cvmlift3lem8 35542 cvmlift3lem9 35543 cnres2 38014 cnresima 38015 hausgraph 43562 ntrf2 44480 fcnre 45385 |
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