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Theorem f1imacnv 5254
Description: Preimage of an image. (Contributed by NM, 30-Sep-2004.)
Assertion
Ref Expression
f1imacnv  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( `' F " ( F " C
) )  =  C )

Proof of Theorem f1imacnv
StepHypRef Expression
1 resima 4732 . 2  |-  ( ( `' F  |`  ( F
" C ) )
" ( F " C ) )  =  ( `' F "
( F " C
) )
2 df-f1 5007 . . . . . . 7  |-  ( F : A -1-1-> B  <->  ( F : A --> B  /\  Fun  `' F ) )
32simprbi 269 . . . . . 6  |-  ( F : A -1-1-> B  ->  Fun  `' F )
43adantr 270 . . . . 5  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  Fun  `' F
)
5 funcnvres 5073 . . . . 5  |-  ( Fun  `' F  ->  `' ( F  |`  C )  =  ( `' F  |`  ( F " C
) ) )
64, 5syl 14 . . . 4  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  `' ( F  |`  C )  =  ( `' F  |`  ( F
" C ) ) )
76imaeq1d 4760 . . 3  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( `' ( F  |`  C ) " ( F " C ) )  =  ( ( `' F  |`  ( F " C
) ) " ( F " C ) ) )
8 f1ores 5252 . . . . 5  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( F  |`  C ) : C -1-1-onto-> ( F " C ) )
9 f1ocnv 5250 . . . . 5  |-  ( ( F  |`  C ) : C -1-1-onto-> ( F " C
)  ->  `' ( F  |`  C ) : ( F " C
)
-1-1-onto-> C )
108, 9syl 14 . . . 4  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C )
11 imadmrn 4771 . . . . 5  |-  ( `' ( F  |`  C )
" dom  `' ( F  |`  C ) )  =  ran  `' ( F  |`  C )
12 f1odm 5241 . . . . . 6  |-  ( `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C  ->  dom  `' ( F  |`  C )  =  ( F " C ) )
1312imaeq2d 4761 . . . . 5  |-  ( `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C  ->  ( `' ( F  |`  C )
" dom  `' ( F  |`  C ) )  =  ( `' ( F  |`  C ) " ( F " C ) ) )
14 f1ofo 5244 . . . . . 6  |-  ( `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C  ->  `' ( F  |`  C ) : ( F " C
) -onto-> C )
15 forn 5220 . . . . . 6  |-  ( `' ( F  |`  C ) : ( F " C ) -onto-> C  ->  ran  `' ( F  |`  C )  =  C )
1614, 15syl 14 . . . . 5  |-  ( `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C  ->  ran  `' ( F  |`  C )  =  C )
1711, 13, 163eqtr3a 2144 . . . 4  |-  ( `' ( F  |`  C ) : ( F " C ) -1-1-onto-> C  ->  ( `' ( F  |`  C )
" ( F " C ) )  =  C )
1810, 17syl 14 . . 3  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( `' ( F  |`  C ) " ( F " C ) )  =  C )
197, 18eqtr3d 2122 . 2  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( ( `' F  |`  ( F " C ) ) "
( F " C
) )  =  C )
201, 19syl5eqr 2134 1  |-  ( ( F : A -1-1-> B  /\  C  C_  A )  ->  ( `' F " ( F " C
) )  =  C )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 102    = wceq 1289    C_ wss 2997   `'ccnv 4427   dom cdm 4428   ran crn 4429    |` cres 4430   "cima 4431   Fun wfun 4996   -->wf 4998   -1-1->wf1 4999   -onto->wfo 5000   -1-1-onto->wf1o 5001
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-sep 3949  ax-pow 4001  ax-pr 4027
This theorem depends on definitions:  df-bi 115  df-3an 926  df-tru 1292  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ral 2364  df-rex 2365  df-v 2621  df-un 3001  df-in 3003  df-ss 3010  df-pw 3427  df-sn 3447  df-pr 3448  df-op 3450  df-br 3838  df-opab 3892  df-id 4111  df-xp 4434  df-rel 4435  df-cnv 4436  df-co 4437  df-dm 4438  df-rn 4439  df-res 4440  df-ima 4441  df-fun 5004  df-fn 5005  df-f 5006  df-f1 5007  df-fo 5008  df-f1o 5009
This theorem is referenced by:  f1opw2  5832  ssenen  6547
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