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Theorem afveq2 47612
Description: Equality theorem for function value, analogous to fveq1 6830. (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 2742 . 2 (𝐴 = 𝐵𝐹 = 𝐹)
2 id 22 . 2 (𝐴 = 𝐵𝐴 = 𝐵)
31, 2afveq12d 47610 1 (𝐴 = 𝐵 → (𝐹'''𝐴) = (𝐹'''𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1548  '''cafv 47594
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1975  ax-7 2016  ax-8 2123  ax-9 2131  ax-10 2154  ax-11 2170  ax-12 2191  ax-ext 2713  ax-sep 5221  ax-nul 5231  ax-pr 5365
This theorem depends on definitions:  df-bi 209  df-an 398  df-or 855  df-3an 1095  df-tru 1551  df-fal 1561  df-ex 1788  df-nf 1792  df-sb 2075  df-mo 2545  df-eu 2575  df-clab 2720  df-cleq 2733  df-clel 2816  df-nfc 2890  df-ne 2937  df-ral 3056  df-rex 3066  df-rab 3394  df-v 3435  df-sbc 3726  df-csb 3834  df-dif 3888  df-un 3890  df-in 3892  df-ss 3902  df-nul 4265  df-if 4458  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4842  df-int 4881  df-br 5076  df-opab 5138  df-id 5516  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-res 5633  df-iota 6445  df-fun 6491  df-fv 6497  df-aiota 47562  df-dfat 47596  df-afv 47597
This theorem is referenced by:  ffnaov  47676
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