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Theorem cldrcl 14984
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 fncld 14980 . . . 4 Clsd Fn Top
2 fnrel 5456 . . . 4 (Clsd Fn Top → Rel Clsd)
31, 2ax-mp 5 . . 3 Rel Clsd
4 relelfvdm 5704 . . 3 ((Rel Clsd ∧ 𝐶 ∈ (Clsd‘𝐽)) → 𝐽 ∈ dom Clsd)
53, 4mpan 424 . 2 (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ dom Clsd)
6 fndm 5457 . . 3 (Clsd Fn Top → dom Clsd = Top)
71, 6ax-mp 5 . 2 dom Clsd = Top
85, 7eleqtrdi 2327 1 (𝐶 ∈ (Clsd‘𝐽) → 𝐽 ∈ Top)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1398  wcel 2205  dom cdm 4751  Rel wrel 4756   Fn wfn 5349  cfv 5354  Topctop 14879  Clsdccld 14974
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324  ax-un 4556
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-iota 5314  df-fun 5356  df-fn 5357  df-fv 5362  df-cld 14977
This theorem is referenced by:  cldss  14987  cldopn  14989  difopn  14990  uncld  14995  cldcls  14996  clsss2  15011
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