Theorem cldrcl 21629

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 6695	. 2 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd)
2		fncld 21625	. . 3 ⊢ Clsd Fn Top
3		fndm 6448	. . 3 ⊢ (Clsd Fn Top → dom Clsd = Top)
4	2, 3	ax-mp 5	. 2 ⊢ dom Clsd = Top
5	1, 4	eleqtrdi 2922	1 ⊢ (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top)

Syntax hints:   → wi 4   = wceq 1536   ∈ wcel 2113  dom cdm 5548   Fn wfn 6343  ‘cfv 6348  Topctop 21496  Clsdccld 21619

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2792  ax-sep 5196  ax-nul 5203  ax-pow 5259  ax-pr 5323  ax-un 7454

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1084  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2799  df-cleq 2813  df-clel 2892  df-nfc 2962  df-ral 3142  df-rex 3143  df-rab 3146  df-v 3493  df-dif 3932  df-un 3934  df-in 3936  df-ss 3945  df-nul 4285  df-if 4461  df-pw 4534  df-sn 4561  df-pr 4563  df-op 4567  df-uni 4832  df-br 5060  df-opab 5122  df-mpt 5140  df-id 5453  df-xp 5554  df-rel 5555  df-cnv 5556  df-co 5557  df-dm 5558  df-iota 6307  df-fun 6350  df-fn 6351  df-fv 6356  df-cld 21622

This theorem is referenced by:  cldss  21632  cldopn  21634  difopn  21637  iincld  21642  uncld  21644  cldcls  21645  clsss2  21675  opncldf3  21689  restcldi  21776  restcldr  21777  paste  21897  connsubclo  22027  txcld  22206  cldregopn  33700