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Theorem f1ococnv2 6846
Description: The composition of a one-to-one onto function and its converse equals the identity relation restricted to the function's range. (Contributed by NM, 13-Dec-2003.) (Proof shortened by Stefan O'Rear, 12-Feb-2015.)
Assertion
Ref Expression
f1ococnv2 (𝐹:𝐴1-1-onto𝐵 → (𝐹𝐹) = ( I ↾ 𝐵))

Proof of Theorem f1ococnv2
StepHypRef Expression
1 f1ofo 6826 . 2 (𝐹:𝐴1-1-onto𝐵𝐹:𝐴onto𝐵)
2 fococnv2 6845 . 2 (𝐹:𝐴onto𝐵 → (𝐹𝐹) = ( I ↾ 𝐵))
31, 2syl 18 1 (𝐹:𝐴1-1-onto𝐵 → (𝐹𝐹) = ( I ↾ 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1567   I cid 5553  ccnv 5658  cres 5661  ccom 5663  ontowfo 6531  1-1-ontowf1o 6532
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741  ax-sep 5258  ax-pr 5402
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-br 5111  df-opab 5175  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-fun 6535  df-fn 6536  df-f 6537  df-f1 6538  df-fo 6539  df-f1o 6540
This theorem is referenced by:  f1ococnv1  6848  f1ocnvfv2  7273  mapen  9125  hashfacen  14487  setcinv  18143  catcisolem  18163  symginv  19468  f1omvdco2  19514  gsumval3  19973  gsumzf1o  19978  rngcinv  20718  ringcinv  20752  psrass1lem  22048  evl1var  22461  pf1ind  22480  fcobij  33002  cocnvf1o  33011  symgfcoeu  33339  cycpmconjvlem  33398  cycpmconjs  33413  cyc3conja  33414  mplvrpmrhm  33878  erdsze2lem2  35591  ltrncoidN  40787  cdlemg46  41394  cdlemk45  41606  cdlemk55a  41618  tendocnv  41680  eldioph2  43378  rngcinvALTV  48923  ringcinvALTV  48957
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