Theorem fveq12d 5436

Description: Equality deduction for function value. (Contributed by FL, 22-Dec-2008.)

Hypotheses

Ref	Expression
fveq12d.1	|- ( ph -> F = G )
fveq12d.2	|- ( ph -> A = B )

Assertion

Ref	Expression
fveq12d	|- ( ph -> ( F ` A ) = ( G ` B ) )

Proof of Theorem fveq12d

Step	Hyp	Ref	Expression
1		fveq12d.1	. . 3 |- ( ph -> F = G )
2	1	fveq1d 5431	. 2 |- ( ph -> ( F ` A ) = ( G ` A ) )
3		fveq12d.2	. . 3 |- ( ph -> A = B )
4	3	fveq2d 5433	. 2 |- ( ph -> ( G ` A ) = ( G ` B ) )
5	2, 4	eqtrd 2173	1 |- ( ph -> ( F ` A ) = ( G ` B ) )

Syntax hints:   -> wi 4   = wceq 1332   ` cfv 5131

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-10 1484  ax-11 1485  ax-i12 1486  ax-bndl 1487  ax-4 1488  ax-17 1507  ax-i9 1511  ax-ial 1515  ax-i5r 1516  ax-ext 2122

This theorem depends on definitions:  df-bi 116  df-3an 965  df-tru 1335  df-nf 1438  df-sb 1737  df-clab 2127  df-cleq 2133  df-clel 2136  df-nfc 2271  df-rex 2423  df-v 2691  df-un 3080  df-sn 3538  df-pr 3539  df-op 3541  df-uni 3745  df-br 3938  df-iota 5096  df-fv 5139

This theorem is referenced by:  nffvd  5441  fvsng  5624  tfrlem3ag  6214  tfrlem3a  6215  tfrlemi1  6237  tfr1onlem3ag  6242  omp1eomlem  6987  seq3shft  10642  climshft2  11107  fsum3  11188  ctiunctlemfo  11988  reldvg  12856  dvfvalap  12858