Theorem cnclima 15247

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

Step	Hyp	Ref	Expression
1		eqid 2238	. . . . . 6 |- U. J = U. J
2		eqid 2238	. . . . . 6 |- U. K = U. K
3	1, 2	cnf 15228	. . . . 5 |- ( F e. ( J Cn K ) -> F : U. J --> U. K )
4	3	adantr 276	. . . 4 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> F : U. J --> U. K )
5		ffun 5531	. . . . . 6 |- ( F : U. J --> U. K -> Fun F )
6		funcnvcnv 5435	. . . . . 6 |- ( Fun F -> Fun `' `' F )
7		imadif 5456	. . . . . 6 |- ( Fun `' `' F -> ( `' F " ( U. K \ A ) ) = ( ( `' F " U. K ) \ ( `' F " A ) ) )
8	5, 6, 7	3syl 17	. . . . 5 |- ( F : U. J --> U. K -> ( `' F " ( U. K \ A ) ) = ( ( `' F " U. K ) \ ( `' F " A ) ) )
9		fimacnv 5828	. . . . . 6 |- ( F : U. J --> U. K -> ( `' F " U. K ) = U. J )
10	9	difeq1d 3346	. . . . 5 |- ( F : U. J --> U. K -> ( ( `' F " U. K ) \ ( `' F " A ) ) = ( U. J \ ( `' F " A ) ) )
11	8, 10	eqtr2d 2272	. . . 4 |- ( F : U. J --> U. K -> ( U. J \ ( `' F " A ) ) = ( `' F " ( U. K \ A ) ) )
12	4, 11	syl 14	. . 3 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( U. J \ ( `' F " A ) ) = ( `' F " ( U. K \ A ) ) )
13	2	cldopn 15131	. . . 4 |- ( A e. ( Clsd ` K ) -> ( U. K \ A ) e. K )
14		cnima 15244	. . . 4 |- ( ( F e. ( J Cn K ) /\ ( U. K \ A ) e. K ) -> ( `' F " ( U. K \ A ) ) e. J )
15	13, 14	sylan2 286	. . 3 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( `' F " ( U. K \ A ) ) e. J )
16	12, 15	eqeltrd 2315	. 2 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( U. J \ ( `' F " A ) ) e. J )
17		cntop1 15225	. . . 4 |- ( F e. ( J Cn K ) -> J e. Top )
18	17	adantr 276	. . 3 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> J e. Top )
19		cnvimass 5145	. . . 4 |- ( `' F " A ) C_ dom F
20	19, 4	fssdm 5544	. . 3 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( `' F " A ) C_ U. J )
21	1	iscld2 15128	. . 3 |- ( ( J e. Top /\ ( `' F " A ) C_ U. J ) -> ( ( `' F " A ) e. ( Clsd ` J ) <-> ( U. J \ ( `' F " A ) ) e. J ) )
22	18, 20, 21	syl2anc 415	. 2 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( ( `' F " A ) e. ( Clsd ` J ) <-> ( U. J \ ( `' F " A ) ) e. J ) )
23	16, 22	mpbird 167	1 |- ( ( F e. ( J Cn K ) /\ A e. ( Clsd ` K ) ) -> ( `' F " A ) e. ( Clsd ` J ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1402   e. wcel 2209   \ cdif 3217   C_ wss 3220   U.cuni 3930   `'ccnv 4768   "cima 4772   Fun wfun 5366   -->wf 5368   ` cfv 5372  (class class class)co 6075   Topctop 15021   Clsdccld 15116   Cn ccn 15209

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-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4244  ax-pow 4306  ax-pr 4341  ax-un 4573  ax-setind 4679

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-uni 3931  df-iun 4009  df-br 4126  df-opab 4188  df-mpt 4189  df-id 4433  df-xp 4775  df-rel 4776  df-cnv 4777  df-co 4778  df-dm 4779  df-rn 4780  df-res 4781  df-ima 4782  df-iota 5332  df-fun 5374  df-fn 5375  df-f 5376  df-fv 5380  df-ov 6078  df-oprab 6079  df-mpo 6080  df-1st 6364  df-2nd 6365  df-map 6914  df-top 15022  df-topon 15035  df-cld 15119  df-cn 15212

This theorem is referenced by:  hmeocld  15336