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Theorem cldrcl 20830
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
StepHypRef Expression
1 elfvdm 6220 . 2 (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd)
2 fncld 20826 . . 3 Clsd Fn Top
3 fndm 5990 . . 3 (Clsd Fn Top → dom Clsd = Top)
42, 3ax-mp 5 . 2 dom Clsd = Top
51, 4syl6eleq 2711 1 (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1483  wcel 1990  dom cdm 5114   Fn wfn 5883  cfv 5888  Topctop 20698  Clsdccld 20820
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-iota 5851  df-fun 5890  df-fn 5891  df-fv 5896  df-cld 20823
This theorem is referenced by:  cldss  20833  cldopn  20835  difopn  20838  iincld  20843  uncld  20845  cldcls  20846  clsss2  20876  opncldf3  20890  restcldi  20977  restcldr  20978  paste  21098  connsubclo  21227  txcld  21406  cldregopn  32326
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