| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 23285 | . . 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 1570 ∈ wcel 2147 ∪ cuni 4872 ‘cfv 6566 Topctop 23266 TopOnctopon 23283 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-iota 6520 df-fun 6568 df-fv 6574 df-topon 23284 |
| This theorem is used by: toptopon2 23291 eltpsi 23317 restuni 23535 stoig 23536 restlp 23556 restperf 23557 perfopn 23558 iscn2 23611 iscnp2 23612 cncnpi 23651 cncnp2 23654 cnnei 23655 cnrest 23658 cnpresti 23661 cnprest 23662 cnprest2 23663 paste 23667 t1sep2 23742 sshauslem 23745 1stcelcls 23835 kgenuni 23913 iskgen3 23923 txuni 23966 ptuniconst 23972 txcnmpt 23998 txcn 24000 txindis 24008 ptrescn 24013 txcmpb 24018 xkoptsub 24028 xkofvcn 24058 imasnopn 24064 imasncld 24065 imasncls 24066 qtopcmplem 24081 qtopkgen 24084 hmeof1o 24138 hmeores 24145 hmphindis 24171 cmphaushmeo 24174 txhmeo 24177 ptunhmeo 24182 hausflim 24355 flfneii 24366 hausflf 24371 flimfnfcls 24402 flfcntr 24417 cnextfun 24438 cnextfvval 24439 cnextf 24440 cnextcn 24441 cnextfres1 24442 retopon 25137 evth 25335 evth2 25336 qtophaus 34579 rrhre 34764 pconnconn 36204 connpconn 36208 pconnpi1 36210 sconnpi1 36212 txsconnlem 36213 txsconn 36214 cvmsf1o 36245 cvmliftmolem1 36254 cvmliftlem8 36265 cvmlift2lem9a 36276 cvmlift2lem9 36284 cvmlift2lem11 36286 cvmlift2lem12 36287 cvmliftphtlem 36290 cvmlift3lem6 36297 cvmlift3lem8 36299 cvmlift3lem9 36300 cnres2 38963 cnresima 38964 hausgraph 44468 ntrf2 45385 fcnre 46316 |
| Copyright terms: Public domain | W3C validator |