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Theorem fvresi 5776
Description: The value of a restricted identity function. (Contributed by NM, 19-May-2004.)
Assertion
Ref Expression
fvresi (𝐵𝐴 → (( I ↾ 𝐴)‘𝐵) = 𝐵)

Proof of Theorem fvresi
StepHypRef Expression
1 fvres 5599 . 2 (𝐵𝐴 → (( I ↾ 𝐴)‘𝐵) = ( I ‘𝐵))
2 fvi 5635 . 2 (𝐵𝐴 → ( I ‘𝐵) = 𝐵)
31, 2eqtrd 2237 1 (𝐵𝐴 → (( I ↾ 𝐴)‘𝐵) = 𝐵)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1372  wcel 2175   I cid 4334  cres 4676  cfv 5270
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 710  ax-5 1469  ax-7 1470  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-10 1527  ax-11 1528  ax-i12 1529  ax-bndl 1531  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-i5r 1557  ax-14 2178  ax-ext 2186  ax-sep 4161  ax-pow 4217  ax-pr 4252
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1375  df-nf 1483  df-sb 1785  df-eu 2056  df-mo 2057  df-clab 2191  df-cleq 2197  df-clel 2200  df-nfc 2336  df-ral 2488  df-rex 2489  df-v 2773  df-sbc 2998  df-un 3169  df-in 3171  df-ss 3178  df-pw 3617  df-sn 3638  df-pr 3639  df-op 3641  df-uni 3850  df-br 4044  df-opab 4105  df-id 4339  df-xp 4680  df-rel 4681  df-cnv 4682  df-co 4683  df-dm 4684  df-res 4686  df-iota 5231  df-fun 5272  df-fv 5278
This theorem is referenced by:  f1ocnvfv1  5845  f1ocnvfv2  5846  fcof1  5851  fcofo  5852  isoid  5878  iordsmo  6382  omp1eomlem  7195  ctm  7210  ndxarg  12826  idmhm  13272  idghm  13566  dvid  15138  dvidre  15140
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