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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 23239 | . . 3 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ (𝐽 ∈ Top ∧ 𝑋 = ∪ 𝐽)) | |
| 3 | 1, 2 | mpbiran2 723 | . 2 ⊢ (𝐽 ∈ (TopOn‘𝑋) ↔ 𝐽 ∈ Top) |
| 4 | 3 | bicomi 227 | 1 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 = wceq 1569 ∈ wcel 2144 ∪ cuni 4866 ‘cfv 6543 Topctop 23220 TopOnctopon 23237 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5327 ax-pr 5391 ax-un 7755 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-iota 6497 df-fun 6545 df-fv 6551 df-topon 23238 |
| This theorem is used by: toptopon2 23245 eltpsi 23271 restuni 23489 stoig 23490 restlp 23510 restperf 23511 perfopn 23512 iscn2 23565 iscnp2 23566 cncnpi 23605 cncnp2 23608 cnnei 23609 cnrest 23612 cnpresti 23615 cnprest 23616 cnprest2 23617 paste 23621 t1sep2 23696 sshauslem 23699 1stcelcls 23789 kgenuni 23867 iskgen3 23877 txuni 23920 ptuniconst 23926 txcnmpt 23952 txcn 23954 txindis 23962 ptrescn 23967 txcmpb 23972 xkoptsub 23982 xkofvcn 24012 imasnopn 24018 imasncld 24019 imasncls 24020 qtopcmplem 24035 qtopkgen 24038 hmeof1o 24092 hmeores 24099 hmphindis 24125 cmphaushmeo 24128 txhmeo 24131 ptunhmeo 24136 hausflim 24309 flfneii 24320 hausflf 24325 flimfnfcls 24356 flfcntr 24371 cnextfun 24392 cnextfvval 24393 cnextf 24394 cnextcn 24395 cnextfres1 24396 retopon 25091 evth 25289 evth2 25290 qtophaus 34518 rrhre 34703 pconnconn 36114 connpconn 36118 pconnpi1 36120 sconnpi1 36122 txsconnlem 36123 txsconn 36124 cvmsf1o 36155 cvmliftmolem1 36164 cvmliftlem8 36175 cvmlift2lem9a 36186 cvmlift2lem9 36194 cvmlift2lem11 36196 cvmlift2lem12 36197 cvmliftphtlem 36200 cvmlift3lem6 36207 cvmlift3lem8 36209 cvmlift3lem9 36210 cnres2 38834 cnresima 38835 hausgraph 44344 ntrf2 45261 fcnre 46178 |
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