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Theorem cnclima 12976
Description: A closed subset of the codomain of a continuous function has a closed preimage. (Contributed by NM, 15-Mar-2007.) (Revised by Mario Carneiro, 21-Aug-2015.)
Assertion
Ref Expression
cnclima  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( `' F " A )  e.  (
Clsd `  J )
)

Proof of Theorem cnclima
StepHypRef Expression
1 eqid 2170 . . . . . 6  |-  U. J  =  U. J
2 eqid 2170 . . . . . 6  |-  U. K  =  U. K
31, 2cnf 12957 . . . . 5  |-  ( F  e.  ( J  Cn  K )  ->  F : U. J --> U. K
)
43adantr 274 . . . 4  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  ->  F : U. J --> U. K
)
5 ffun 5348 . . . . . 6  |-  ( F : U. J --> U. K  ->  Fun  F )
6 funcnvcnv 5255 . . . . . 6  |-  ( Fun 
F  ->  Fun  `' `' F )
7 imadif 5276 . . . . . 6  |-  ( Fun  `' `' F  ->  ( `' F " ( U. K  \  A ) )  =  ( ( `' F " U. K
)  \  ( `' F " A ) ) )
85, 6, 73syl 17 . . . . 5  |-  ( F : U. J --> U. K  ->  ( `' F "
( U. K  \  A ) )  =  ( ( `' F " U. K )  \ 
( `' F " A ) ) )
9 fimacnv 5622 . . . . . 6  |-  ( F : U. J --> U. K  ->  ( `' F " U. K )  =  U. J )
109difeq1d 3244 . . . . 5  |-  ( F : U. J --> U. K  ->  ( ( `' F " U. K )  \ 
( `' F " A ) )  =  ( U. J  \ 
( `' F " A ) ) )
118, 10eqtr2d 2204 . . . 4  |-  ( F : U. J --> U. K  ->  ( U. J  \ 
( `' F " A ) )  =  ( `' F "
( U. K  \  A ) ) )
124, 11syl 14 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( U. J  \ 
( `' F " A ) )  =  ( `' F "
( U. K  \  A ) ) )
132cldopn 12860 . . . 4  |-  ( A  e.  ( Clsd `  K
)  ->  ( U. K  \  A )  e.  K )
14 cnima 12973 . . . 4  |-  ( ( F  e.  ( J  Cn  K )  /\  ( U. K  \  A
)  e.  K )  ->  ( `' F " ( U. K  \  A ) )  e.  J )
1513, 14sylan2 284 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( `' F "
( U. K  \  A ) )  e.  J )
1612, 15eqeltrd 2247 . 2  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( U. J  \ 
( `' F " A ) )  e.  J )
17 cntop1 12954 . . . 4  |-  ( F  e.  ( J  Cn  K )  ->  J  e.  Top )
1817adantr 274 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  ->  J  e.  Top )
19 cnvimass 4972 . . . 4  |-  ( `' F " A ) 
C_  dom  F
2019, 4fssdm 5360 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( `' F " A )  C_  U. J
)
211iscld2 12857 . . 3  |-  ( ( J  e.  Top  /\  ( `' F " A ) 
C_  U. J )  -> 
( ( `' F " A )  e.  (
Clsd `  J )  <->  ( U. J  \  ( `' F " A ) )  e.  J ) )
2218, 20, 21syl2anc 409 . 2  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( ( `' F " A )  e.  (
Clsd `  J )  <->  ( U. J  \  ( `' F " A ) )  e.  J ) )
2316, 22mpbird 166 1  |-  ( ( F  e.  ( J  Cn  K )  /\  A  e.  ( Clsd `  K ) )  -> 
( `' F " A )  e.  (
Clsd `  J )
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    <-> wb 104    = wceq 1348    e. wcel 2141    \ cdif 3118    C_ wss 3121   U.cuni 3794   `'ccnv 4608   "cima 4612   Fun wfun 5190   -->wf 5192   ` cfv 5196  (class class class)co 5850   Topctop 12748   Clsdccld 12845    Cn ccn 12938
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4105  ax-pow 4158  ax-pr 4192  ax-un 4416  ax-setind 4519
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-rab 2457  df-v 2732  df-sbc 2956  df-csb 3050  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3566  df-sn 3587  df-pr 3588  df-op 3590  df-uni 3795  df-iun 3873  df-br 3988  df-opab 4049  df-mpt 4050  df-id 4276  df-xp 4615  df-rel 4616  df-cnv 4617  df-co 4618  df-dm 4619  df-rn 4620  df-res 4621  df-ima 4622  df-iota 5158  df-fun 5198  df-fn 5199  df-f 5200  df-fv 5204  df-ov 5853  df-oprab 5854  df-mpo 5855  df-1st 6116  df-2nd 6117  df-map 6624  df-top 12749  df-topon 12762  df-cld 12848  df-cn 12941
This theorem is referenced by:  hmeocld  13065
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