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Theorem f1ococnv2 6794
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 6774 . 2 (𝐹:𝐴1-1-onto𝐵𝐹:𝐴onto𝐵)
2 fococnv2 6793 . 2 (𝐹:𝐴onto𝐵 → (𝐹𝐹) = ( I ↾ 𝐵))
31, 2syl 17 1 (𝐹:𝐴1-1-onto𝐵 → (𝐹𝐹) = ( I ↾ 𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1547   I cid 5512  ccnv 5617  cres 5620  ccom 5622  ontowfo 6483  1-1-ontowf1o 6484
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-ext 2711  ax-sep 5218  ax-pr 5362
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-sb 2074  df-clab 2718  df-cleq 2731  df-clel 2814  df-ral 3054  df-rex 3064  df-rab 3392  df-v 3433  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4262  df-if 4455  df-sn 4556  df-pr 4558  df-op 4562  df-br 5073  df-opab 5135  df-id 5513  df-xp 5624  df-rel 5625  df-cnv 5626  df-co 5627  df-dm 5628  df-rn 5629  df-res 5630  df-fun 6487  df-fn 6488  df-f 6489  df-f1 6490  df-fo 6491  df-f1o 6492
This theorem is referenced by:  f1ococnv1  6796  f1ocnvfv2  7221  mapen  9069  hashfacen  14407  setcinv  18048  catcisolem  18068  symginv  19368  f1omvdco2  19414  gsumval3  19873  gsumzf1o  19878  rngcinv  20609  ringcinv  20643  psrass1lem  21908  evl1var  22322  pf1ind  22341  fcobij  32812  cocnvf1o  32821  symgfcoeu  33163  cycpmconjvlem  33222  cycpmconjs  33237  cyc3conja  33238  mplvrpmrhm  33731  erdsze2lem2  35432  ltrncoidN  40620  cdlemg46  41227  cdlemk45  41439  cdlemk55a  41451  tendocnv  41513  eldioph2  43211  rngcinvALTV  48767  ringcinvALTV  48801
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