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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 23230 | . . 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 6538 Topctop 23211 TopOnctopon 23228 |
| 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 5326 ax-pr 5390 ax-un 7751 |
| 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 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-iota 6494 df-fun 6540 df-fv 6546 df-topon 23229 |
| This theorem is used by: toptopon2 23236 eltpsi 23262 restuni 23480 stoig 23481 restlp 23501 restperf 23502 perfopn 23503 iscn2 23556 iscnp2 23557 cncnpi 23596 cncnp2 23599 cnnei 23600 cnrest 23603 cnpresti 23606 cnprest 23607 cnprest2 23608 paste 23612 t1sep2 23687 sshauslem 23690 1stcelcls 23780 kgenuni 23858 iskgen3 23868 txuni 23911 ptuniconst 23917 txcnmpt 23943 txcn 23945 txindis 23953 ptrescn 23958 txcmpb 23963 xkoptsub 23973 xkofvcn 24003 imasnopn 24009 imasncld 24010 imasncls 24011 qtopcmplem 24026 qtopkgen 24029 hmeof1o 24083 hmeores 24090 hmphindis 24116 cmphaushmeo 24119 txhmeo 24122 ptunhmeo 24127 hausflim 24300 flfneii 24311 hausflf 24316 flimfnfcls 24347 flfcntr 24362 cnextfun 24383 cnextfvval 24384 cnextf 24385 cnextcn 24386 cnextfres1 24387 retopon 25082 evth 25280 evth2 25281 qtophaus 34510 rrhre 34695 pconnconn 36038 connpconn 36042 pconnpi1 36044 sconnpi1 36046 txsconnlem 36047 txsconn 36048 cvmsf1o 36079 cvmliftmolem1 36088 cvmliftlem8 36099 cvmlift2lem9a 36110 cvmlift2lem9 36118 cvmlift2lem11 36120 cvmlift2lem12 36121 cvmliftphtlem 36124 cvmlift3lem6 36131 cvmlift3lem8 36133 cvmlift3lem9 36134 cnres2 38740 cnresima 38741 hausgraph 44249 ntrf2 45166 fcnre 46084 |
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