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Mirrors > Home > ILE Home > Th. List > cldrcl | 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 | fncld 14266 | . . . 4 ⊢ Clsd Fn Top | |
2 | fnrel 5352 | . . . 4 ⊢ (Clsd Fn Top → Rel Clsd) | |
3 | 1, 2 | ax-mp 5 | . . 3 ⊢ Rel Clsd |
4 | relelfvdm 5586 | . . 3 ⊢ ((Rel Clsd ∧ 𝐶 ∈ (Clsd‘𝐽)) → 𝐽 ∈ dom Clsd) | |
5 | 3, 4 | mpan 424 | . 2 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd) |
6 | fndm 5353 | . . 3 ⊢ (Clsd Fn Top → dom Clsd = Top) | |
7 | 1, 6 | ax-mp 5 | . 2 ⊢ dom Clsd = Top |
8 | 5, 7 | eleqtrdi 2286 | 1 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top) |
Colors of variables: wff set class |
Syntax hints: → wi 4 = wceq 1364 ∈ wcel 2164 dom cdm 4659 Rel wrel 4664 Fn wfn 5249 ‘cfv 5254 Topctop 14165 Clsdccld 14260 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4147 ax-pow 4203 ax-pr 4238 ax-un 4464 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ral 2477 df-rex 2478 df-rab 2481 df-v 2762 df-un 3157 df-in 3159 df-ss 3166 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-br 4030 df-opab 4091 df-mpt 4092 df-id 4324 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-iota 5215 df-fun 5256 df-fn 5257 df-fv 5262 df-cld 14263 |
This theorem is referenced by: cldss 14273 cldopn 14275 difopn 14276 uncld 14281 cldcls 14282 clsss2 14297 |
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