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Theorem f1ococnv2 6827
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 6807 . 2 (𝐹:𝐴1-1-onto𝐵𝐹:𝐴onto𝐵)
2 fococnv2 6826 . 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 1540   I cid 5532  ccnv 5637  cres 5640  ccom 5642  ontowfo 6509  1-1-ontowf1o 6510
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-12 2178  ax-ext 2701  ax-sep 5251  ax-nul 5261  ax-pr 5387
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-clab 2708  df-cleq 2721  df-clel 2803  df-ral 3045  df-rex 3054  df-rab 3406  df-v 3449  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-sn 4590  df-pr 4592  df-op 4596  df-br 5108  df-opab 5170  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-fun 6513  df-fn 6514  df-f 6515  df-f1 6516  df-fo 6517  df-f1o 6518
This theorem is referenced by:  f1ococnv1  6829  f1ocnvfv2  7252  mapen  9105  hashfacen  14419  setcinv  18052  catcisolem  18072  symginv  19332  f1omvdco2  19378  gsumval3  19837  gsumzf1o  19842  rngcinv  20546  ringcinv  20580  psrass1lem  21841  evl1var  22223  pf1ind  22242  fcobij  32645  symgfcoeu  33039  cycpmconjvlem  33098  cycpmconjs  33113  cyc3conja  33114  erdsze2lem2  35191  ltrncoidN  40122  cdlemg46  40729  cdlemk45  40941  cdlemk55a  40953  tendocnv  41015  eldioph2  42750  rngcinvALTV  48264  ringcinvALTV  48298
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