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Theorem afveq2 28103
Description: Equality theorem for function value, analogous to fveq1 5540. (Contributed by Alexander van der Vekens, 22-Jul-2017.)
Assertion
Ref Expression
afveq2  |-  ( A  =  B  ->  ( F''' A )  =  ( F''' B ) )

Proof of Theorem afveq2
StepHypRef Expression
1 eqidd 2297 . 2  |-  ( A  =  B  ->  F  =  F )
2 id 19 . 2  |-  ( A  =  B  ->  A  =  B )
31, 2afveq12d 28101 1  |-  ( A  =  B  ->  ( F''' A )  =  ( F''' B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1632  '''cafv 28075
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-rex 2562  df-rab 2565  df-v 2803  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-sn 3659  df-pr 3660  df-op 3662  df-uni 3844  df-br 4040  df-opab 4094  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-res 4717  df-iota 5235  df-fun 5273  df-fv 5279  df-dfat 28077  df-afv 28078
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