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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 22877 | . . 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 4850 ‘cfv 6498 Topctop 22858 TopOnctopon 22875 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-iota 6454 df-fun 6500 df-fv 6506 df-topon 22876 |
| This theorem is referenced by: toptopon2 22883 eltpsi 22909 restuni 23127 stoig 23128 restlp 23148 restperf 23149 perfopn 23150 iscn2 23203 iscnp2 23204 cncnpi 23243 cncnp2 23246 cnnei 23247 cnrest 23250 cnpresti 23253 cnprest 23254 cnprest2 23255 paste 23259 t1sep2 23334 sshauslem 23337 1stcelcls 23426 kgenuni 23504 iskgen3 23514 txuni 23557 ptuniconst 23563 txcnmpt 23589 txcn 23591 txindis 23599 ptrescn 23604 txcmpb 23609 xkoptsub 23619 xkofvcn 23649 imasnopn 23655 imasncld 23656 imasncls 23657 qtopcmplem 23672 qtopkgen 23675 hmeof1o 23729 hmeores 23736 hmphindis 23762 cmphaushmeo 23765 txhmeo 23768 ptunhmeo 23773 hausflim 23946 flfneii 23957 hausflf 23962 flimfnfcls 23993 flfcntr 24008 cnextfun 24029 cnextfvval 24030 cnextf 24031 cnextcn 24032 cnextfres1 24033 retopon 24728 evth 24926 evth2 24927 qtophaus 33980 rrhre 34165 pconnconn 35413 connpconn 35417 pconnpi1 35419 sconnpi1 35421 txsconnlem 35422 txsconn 35423 cvmsf1o 35454 cvmliftmolem1 35463 cvmliftlem8 35474 cvmlift2lem9a 35485 cvmlift2lem9 35493 cvmlift2lem11 35495 cvmlift2lem12 35496 cvmliftphtlem 35499 cvmlift3lem6 35506 cvmlift3lem8 35508 cvmlift3lem9 35509 cnres2 38084 cnresima 38085 hausgraph 43633 ntrf2 44551 fcnre 45456 |
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