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Theorem feq2d 5470
Description: Equality deduction for functions. (Contributed by Paul Chapman, 22-Jun-2011.)
Hypothesis
Ref Expression
feq2d.1 (𝜑𝐴 = 𝐵)
Assertion
Ref Expression
feq2d (𝜑 → (𝐹:𝐴𝐶𝐹:𝐵𝐶))

Proof of Theorem feq2d
StepHypRef Expression
1 feq2d.1 . 2 (𝜑𝐴 = 𝐵)
2 feq2 5466 . 2 (𝐴 = 𝐵 → (𝐹:𝐴𝐶𝐹:𝐵𝐶))
31, 2syl 14 1 (𝜑 → (𝐹:𝐴𝐶𝐹:𝐵𝐶))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1397  wf 5322
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-5 1495  ax-gen 1497  ax-4 1558  ax-17 1574  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-cleq 2224  df-fn 5329  df-f 5330
This theorem is referenced by:  feq12d  5472  ffdm  5505  fsng  5820  fsn2g  5822  issmo2  6455  qliftf  6789  elpm2r  6835  casef  7287  fseq1p1m1  10329  fseq1m1p1  10330  seqf  10727  seqf2  10731  seqf1og  10784  iswrdinn0  11119  wrdf  11120  iswrdiz  11121  wrdffz  11135  ffz0iswrdnn0  11141  wrdnval  11145  ccatalpha  11191  swrdf  11237  swrdwrdsymbg  11246  cats1un  11303  s2dmg  11372  intopsn  13452  gsumprval  13484  resmhm  13572  gsumwsubmcl  13581  gsumwmhm  13583  isghm  13832  resghm  13849  gsumsplit0  13935  psrelbasfi  14693  lmtopcnp  14977  ellimc3apf  15387  dvidlemap  15418  dvidrelem  15419  dvidsslem  15420  dviaddf  15432  dvimulf  15433  dvcjbr  15435  dvcj  15436  dvrecap  15440  dvmptclx  15445  uhgrm  15932  wrdupgren  15950  upgrfnen  15952  wrdumgren  15960  umgrfnen  15962  upgr2wlkdc  16231  wlkres  16233  gfsumval  16701  gsumgfsum  16705
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