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Theorem f1ococnv2 6801
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 6781 . 2 (𝐹:𝐴1-1-onto𝐵𝐹:𝐴onto𝐵)
2 fococnv2 6800 . 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 1542   I cid 5518  ccnv 5623  cres 5626  ccom 5628  ontowfo 6490  1-1-ontowf1o 6491
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709  ax-sep 5231  ax-pr 5370
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ral 3053  df-rex 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-br 5087  df-opab 5149  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499
This theorem is referenced by:  f1ococnv1  6803  f1ocnvfv2  7225  mapen  9072  hashfacen  14407  setcinv  18048  catcisolem  18068  symginv  19368  f1omvdco2  19414  gsumval3  19873  gsumzf1o  19878  rngcinv  20605  ringcinv  20639  psrass1lem  21922  evl1var  22311  pf1ind  22330  fcobij  32808  cocnvf1o  32817  symgfcoeu  33158  cycpmconjvlem  33217  cycpmconjs  33232  cyc3conja  33233  mplvrpmrhm  33706  erdsze2lem2  35402  ltrncoidN  40588  cdlemg46  41195  cdlemk45  41407  cdlemk55a  41419  tendocnv  41481  eldioph2  43208  rngcinvALTV  48764  ringcinvALTV  48798
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