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Theorem fvresd 5720
Description: The value of a restricted function, deduction version of fvres 5719. (Contributed by Glauco Siliprandi, 8-Apr-2021.)
Hypothesis
Ref Expression
fvresd.1 (𝜑 → 𝐴 ∈ 𝐵)
Assertion
Ref Expression
fvresd (𝜑 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴))

Proof of Theorem fvresd
StepHypRef Expression
1 fvresd.1 . 2 (𝜑 → 𝐴 ∈ 𝐵)
2 fvres 5719 . 2 (𝐴 ∈ 𝐵 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴))
31, 2syl 14 1 (𝜑 → ((𝐹 ↾ 𝐵)‘𝐴) = (𝐹‘𝐴))
Colors of variables:    wff set class
This proof depends on syntax axioms:   → wi 4   = wceq 1402   ∈ wcel 2209   ↾ cres 4776  ‘cfv 5377
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-opab 4193  df-xp 4780  df-res 4786  df-iota 5337  df-fv 5385
This theorem is used by:  resfvresima  5956  difinfsn  7441  seqf1oglem2  10972  gzsumsplit1r  13768  resmhm  13847  resghm  14116  upxp  15464  uptx  15466  reeflog  16056  relogef  16057  mpodvdsmulf1o  16245  uhgrspansubgrlem  16683  wlkres  16786  trilpolemlt1  17257
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