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Theorem cldrcl 14937
Description: Reverse closure of the closed set operation. (Contributed by Stefan O'Rear, 22-Feb-2015.)
Assertion
Ref Expression
cldrcl  |-  ( C  e.  ( Clsd `  J
)  ->  J  e.  Top )

Proof of Theorem cldrcl
StepHypRef Expression
1 fncld 14933 . . . 4  |-  Clsd  Fn  Top
2 fnrel 5445 . . . 4  |-  ( Clsd 
Fn  Top  ->  Rel  Clsd )
31, 2ax-mp 5 . . 3  |-  Rel  Clsd
4 relelfvdm 5693 . . 3  |-  ( ( Rel  Clsd  /\  C  e.  ( Clsd `  J
) )  ->  J  e.  dom  Clsd )
53, 4mpan 424 . 2  |-  ( C  e.  ( Clsd `  J
)  ->  J  e.  dom  Clsd )
6 fndm 5446 . . 3  |-  ( Clsd 
Fn  Top  ->  dom  Clsd  =  Top )
71, 6ax-mp 5 . 2  |-  dom  Clsd  =  Top
85, 7eleqtrdi 2325 1  |-  ( C  e.  ( Clsd `  J
)  ->  J  e.  Top )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1398    e. wcel 2203   dom cdm 4740   Rel wrel 4745    Fn wfn 5338   ` cfv 5343   Topctop 14832   Clsdccld 14927
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 2205  ax-14 2206  ax-ext 2214  ax-sep 4221  ax-pow 4279  ax-pr 4314  ax-un 4545
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2814  df-un 3214  df-in 3216  df-ss 3223  df-pw 3667  df-sn 3688  df-pr 3689  df-op 3691  df-uni 3908  df-br 4103  df-opab 4165  df-mpt 4166  df-id 4405  df-xp 4746  df-rel 4747  df-cnv 4748  df-co 4749  df-dm 4750  df-iota 5303  df-fun 5345  df-fn 5346  df-fv 5351  df-cld 14930
This theorem is referenced by:  cldss  14940  cldopn  14942  difopn  14943  uncld  14948  cldcls  14949  clsss2  14964
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