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Theorem afv2eq1 45522
Description: Equality theorem for function value, analogous to fveq1 6846. (Contributed by AV, 4-Sep-2022.)
Assertion
Ref Expression
afv2eq1 (𝐹 = 𝐺 → (𝐹''''𝐴) = (𝐺''''𝐴))

Proof of Theorem afv2eq1
StepHypRef Expression
1 id 22 . 2 (𝐹 = 𝐺𝐹 = 𝐺)
2 eqidd 2738 . 2 (𝐹 = 𝐺𝐴 = 𝐴)
31, 2afv2eq12d 45521 1 (𝐹 = 𝐺 → (𝐹''''𝐴) = (𝐺''''𝐴))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1542  ''''cafv2 45514
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-ext 2708
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-sb 2069  df-clab 2715  df-cleq 2729  df-clel 2815  df-rab 3411  df-v 3450  df-dif 3918  df-un 3920  df-in 3922  df-ss 3932  df-nul 4288  df-if 4492  df-pw 4567  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4871  df-br 5111  df-opab 5173  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-iota 6453  df-fun 6503  df-dfat 45425  df-afv2 45515
This theorem is referenced by: (None)
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