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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 23069 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 722 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
| 4 | 3 | bicomi 227 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 209 = wceq 1570 ∈ wcel 2143 ∪ cuni 4872 ‘cfv 6536 Topctop 23050 TopOnctopon 23067 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-opab 5174 df-mpt 5193 df-id 5556 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-iota 6492 df-fun 6538 df-fv 6544 df-topon 23068 |
| This theorem is referenced by: toptopon2 23075 eltpsi 23101 restuni 23319 stoig 23320 restlp 23340 restperf 23341 perfopn 23342 iscn2 23395 iscnp2 23396 cncnpi 23435 cncnp2 23438 cnnei 23439 cnrest 23442 cnpresti 23445 cnprest 23446 cnprest2 23447 paste 23451 t1sep2 23526 sshauslem 23529 1stcelcls 23618 kgenuni 23696 iskgen3 23706 txuni 23749 ptuniconst 23755 txcnmpt 23781 txcn 23783 txindis 23791 ptrescn 23796 txcmpb 23801 xkoptsub 23811 xkofvcn 23841 imasnopn 23847 imasncld 23848 imasncls 23849 qtopcmplem 23864 qtopkgen 23867 hmeof1o 23921 hmeores 23928 hmphindis 23954 cmphaushmeo 23957 txhmeo 23960 ptunhmeo 23965 hausflim 24138 flfneii 24149 hausflf 24154 flimfnfcls 24185 flfcntr 24200 cnextfun 24221 cnextfvval 24222 cnextf 24223 cnextcn 24224 cnextfres1 24225 retopon 24920 evth 25118 evth2 25119 qtophaus 34226 rrhre 34411 pconnconn 35723 connpconn 35727 pconnpi1 35729 sconnpi1 35731 txsconnlem 35732 txsconn 35733 cvmsf1o 35764 cvmliftmolem1 35773 cvmliftlem8 35784 cvmlift2lem9a 35795 cvmlift2lem9 35803 cvmlift2lem11 35805 cvmlift2lem12 35806 cvmliftphtlem 35809 cvmlift3lem6 35816 cvmlift3lem8 35818 cvmlift3lem9 35819 cnres2 38414 cnresima 38415 hausgraph 43932 ntrf2 44850 fcnre 45745 |
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