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Theorem f1ococnv2 6665
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 6646 . 2 (𝐹:𝐴1-1-onto𝐵𝐹:𝐴onto𝐵)
2 fococnv2 6664 . 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 1543   I cid 5439  ccnv 5535  cres 5538  ccom 5540  ontowfo 6356  1-1-ontowf1o 6357
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2018  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2160  ax-12 2177  ax-ext 2708  ax-sep 5177  ax-nul 5184  ax-pr 5307
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-clab 2715  df-cleq 2728  df-clel 2809  df-ral 3056  df-rex 3057  df-rab 3060  df-v 3400  df-dif 3856  df-un 3858  df-in 3860  df-ss 3870  df-nul 4224  df-if 4426  df-sn 4528  df-pr 4530  df-op 4534  df-br 5040  df-opab 5102  df-id 5440  df-xp 5542  df-rel 5543  df-cnv 5544  df-co 5545  df-dm 5546  df-rn 5547  df-res 5548  df-fun 6360  df-fn 6361  df-f 6362  df-f1 6363  df-fo 6364  df-f1o 6365
This theorem is referenced by:  f1ococnv1  6667  f1ocnvfv2  7066  mapen  8788  hashfacen  13983  hashfacenOLD  13984  setcinv  17550  catcisolem  17570  symginv  18748  f1omvdco2  18794  gsumval3  19246  gsumzf1o  19251  psrass1lemOLD  20853  psrass1lem  20856  evl1var  21206  pf1ind  21225  fcobij  30731  symgfcoeu  31024  cycpmconjvlem  31081  cycpmconjs  31096  cyc3conja  31097  erdsze2lem2  32833  ltrncoidN  37828  cdlemg46  38435  cdlemk45  38647  cdlemk55a  38659  tendocnv  38721  eldioph2  40228  rngcinv  45155  rngcinvALTV  45167  ringcinv  45206  ringcinvALTV  45230
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