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Theorem cldrcl 14825
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 14821 . . . 4  |-  Clsd  Fn  Top
2 fnrel 5428 . . . 4  |-  ( Clsd 
Fn  Top  ->  Rel  Clsd )
31, 2ax-mp 5 . . 3  |-  Rel  Clsd
4 relelfvdm 5671 . . 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 5429 . . 3  |-  ( Clsd 
Fn  Top  ->  dom  Clsd  =  Top )
71, 6ax-mp 5 . 2  |-  dom  Clsd  =  Top
85, 7eleqtrdi 2324 1  |-  ( C  e.  ( Clsd `  J
)  ->  J  e.  Top )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1397    e. wcel 2202   dom cdm 4725   Rel wrel 4730    Fn wfn 5321   ` cfv 5326   Topctop 14720   Clsdccld 14815
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-iota 5286  df-fun 5328  df-fn 5329  df-fv 5334  df-cld 14818
This theorem is referenced by:  cldss  14828  cldopn  14830  difopn  14831  uncld  14836  cldcls  14837  clsss2  14852
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