Theorem cldrcl 21628

Description: Reverse closure of the closed set operation. (Contributed by Stefan O'Rear, 22-Feb-2015.)

Assertion

Ref	Expression
cldrcl	⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top)

Proof of Theorem cldrcl

Step	Hyp	Ref	Expression
1		elfvdm 6696	. 2 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd)
2		fncld 21624	. . 3 ⊢ Clsd Fn Top
3		fndm 6449	. . 3 ⊢ (Clsd Fn Top → dom Clsd = Top)
4	2, 3	ax-mp 5	. 2 ⊢ dom Clsd = Top
5	1, 4	eleqtrdi 2923	1 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top)

Syntax hints:   → wi 4   = wceq 1533   ∈ wcel 2110  dom cdm 5549   Fn wfn 6344  ‘cfv 6349  Topctop 21495  Clsdccld 21618

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-sep 5195  ax-nul 5202  ax-pow 5258  ax-pr 5321  ax-un 7455

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4561  df-pr 4563  df-op 4567  df-uni 4832  df-br 5059  df-opab 5121  df-mpt 5139  df-id 5454  df-xp 5555  df-rel 5556  df-cnv 5557  df-co 5558  df-dm 5559  df-iota 6308  df-fun 6351  df-fn 6352  df-fv 6357  df-cld 21621

This theorem is referenced by:  cldss  21631  cldopn  21633  difopn  21636  iincld  21641  uncld  21643  cldcls  21644  clsss2  21674  opncldf3  21688  restcldi  21775  restcldr  21776  paste  21896  connsubclo  22026  txcld  22205  cldregopn  33674