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| Mirrors > Home > MPE Home > Th. List > cldrcl | Structured version Visualization version GIF version | ||
| Description: Reverse closure of the closed set operation. (Contributed by Stefan O'Rear, 22-Feb-2015.) |
| Ref | Expression |
|---|---|
| cldrcl | ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elfvdm 6915 | . 2 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd) | |
| 2 | fncld 23279 | . . 3 ⊢ Clsd Fn Top | |
| 3 | 2 | fndmi 6639 | . 2 ⊢ dom Clsd = Top |
| 4 | 1, 3 | eleqtrdi 2870 | 1 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 dom cdm 5655 ‘cfv 6535 Topctop 23150 Clsdccld 23273 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7742 |
| 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 2100 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-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-iota 6491 df-fun 6537 df-fn 6538 df-fv 6543 df-cld 23276 |
| This theorem is used by: cldss 23286 cldopn 23288 difopn 23291 iincld 23296 uncld 23298 cldcls 23299 clsss2 23329 opncldf3 23343 restcldi 23430 restcldr 23431 paste 23551 connsubclo 23681 txcld 23861 cldregopn 37017 clddisj 49895 |
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