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Theorem funbrafv22b 47869
Description: Equivalence of function value and binary relation, analogous to funbrfvb 6932. (Contributed by AV, 6-Sep-2022.)
Assertion
Ref Expression
funbrafv22b ((Fun 𝐹𝐴 ∈ dom 𝐹) → ((𝐹''''𝐴) = 𝐵𝐴𝐹𝐵))

Proof of Theorem funbrafv22b
StepHypRef Expression
1 funfn 6563 . 2 (Fun 𝐹𝐹 Fn dom 𝐹)
2 fnbrafv2b 47867 . 2 ((𝐹 Fn dom 𝐹𝐴 ∈ dom 𝐹) → ((𝐹''''𝐴) = 𝐵𝐴𝐹𝐵))
31, 2sylanb 592 1 ((Fun 𝐹𝐴 ∈ dom 𝐹) → ((𝐹''''𝐴) = 𝐵𝐴𝐹𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 400   = wceq 1567  wcel 2149   class class class wbr 5110  dom cdm 5659  Fun wfun 6527   Fn wfn 6528  ''''cafv2 47827
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-sep 5258  ax-nul 5268  ax-pow 5334  ax-pr 5402
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5111  df-opab 5175  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-res 5671  df-iota 6489  df-fun 6535  df-fn 6536  df-dfat 47738  df-afv2 47828
This theorem is referenced by: (None)
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