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Theorem cncls2i 21074
Description: Property of the preimage of a closure. (Contributed by Mario Carneiro, 25-Aug-2015.)
Hypothesis
Ref Expression
cncls2i.1  |-  Y  = 
U. K
Assertion
Ref Expression
cncls2i  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  -> 
( ( cls `  J
) `  ( `' F " S ) ) 
C_  ( `' F " ( ( cls `  K
) `  S )
) )

Proof of Theorem cncls2i
StepHypRef Expression
1 cntop2 21045 . . . 4  |-  ( F  e.  ( J  Cn  K )  ->  K  e.  Top )
2 cncls2i.1 . . . . 5  |-  Y  = 
U. K
32clscld 20851 . . . 4  |-  ( ( K  e.  Top  /\  S  C_  Y )  -> 
( ( cls `  K
) `  S )  e.  ( Clsd `  K
) )
41, 3sylan 488 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  -> 
( ( cls `  K
) `  S )  e.  ( Clsd `  K
) )
5 cnclima 21072 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  ( ( cls `  K
) `  S )  e.  ( Clsd `  K
) )  ->  ( `' F " ( ( cls `  K ) `
 S ) )  e.  ( Clsd `  J
) )
64, 5syldan 487 . 2  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  -> 
( `' F "
( ( cls `  K
) `  S )
)  e.  ( Clsd `  J ) )
72sscls 20860 . . . 4  |-  ( ( K  e.  Top  /\  S  C_  Y )  ->  S  C_  ( ( cls `  K ) `  S
) )
81, 7sylan 488 . . 3  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  ->  S  C_  ( ( cls `  K ) `  S
) )
9 imass2 5501 . . 3  |-  ( S 
C_  ( ( cls `  K ) `  S
)  ->  ( `' F " S )  C_  ( `' F " ( ( cls `  K ) `
 S ) ) )
108, 9syl 17 . 2  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  -> 
( `' F " S )  C_  ( `' F " ( ( cls `  K ) `
 S ) ) )
11 eqid 2622 . . 3  |-  U. J  =  U. J
1211clsss2 20876 . 2  |-  ( ( ( `' F "
( ( cls `  K
) `  S )
)  e.  ( Clsd `  J )  /\  ( `' F " S ) 
C_  ( `' F " ( ( cls `  K
) `  S )
) )  ->  (
( cls `  J
) `  ( `' F " S ) ) 
C_  ( `' F " ( ( cls `  K
) `  S )
) )
136, 10, 12syl2anc 693 1  |-  ( ( F  e.  ( J  Cn  K )  /\  S  C_  Y )  -> 
( ( cls `  J
) `  ( `' F " S ) ) 
C_  ( `' F " ( ( cls `  K
) `  S )
) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    /\ wa 384    = wceq 1483    e. wcel 1990    C_ wss 3574   U.cuni 4436   `'ccnv 5113   "cima 5117   ` cfv 5888  (class class class)co 6650   Topctop 20698   Clsdccld 20820   clsccl 20822    Cn ccn 21028
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-rep 4771  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-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  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-int 4476  df-iun 4522  df-iin 4523  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-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-map 7859  df-top 20699  df-topon 20716  df-cld 20823  df-cls 20825  df-cn 21031
This theorem is referenced by:  cnclsi  21076  cncls2  21077  imasncls  21495  hmeocls  21571  clssubg  21912
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