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Theorem funbrafv22b 47227
Description: Equivalence of function value and binary relation, analogous to funbrfvb 6931. (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 6565 . 2 (Fun 𝐹𝐹 Fn dom 𝐹)
2 fnbrafv2b 47225 . 2 ((𝐹 Fn dom 𝐹𝐴 ∈ dom 𝐹) → ((𝐹''''𝐴) = 𝐵𝐴𝐹𝐵))
31, 2sylanb 581 1 ((Fun 𝐹𝐴 ∈ dom 𝐹) → ((𝐹''''𝐴) = 𝐵𝐴𝐹𝐵))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395   = wceq 1540  wcel 2108   class class class wbr 5119  dom cdm 5654  Fun wfun 6524   Fn wfn 6525  ''''cafv2 47185
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2707  ax-sep 5266  ax-nul 5276  ax-pow 5335  ax-pr 5402
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2809  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3061  df-rab 3416  df-v 3461  df-dif 3929  df-un 3931  df-in 3933  df-ss 3943  df-nul 4309  df-if 4501  df-sn 4602  df-pr 4604  df-op 4608  df-uni 4884  df-br 5120  df-opab 5182  df-id 5548  df-xp 5660  df-rel 5661  df-cnv 5662  df-co 5663  df-dm 5664  df-res 5666  df-iota 6483  df-fun 6532  df-fn 6533  df-dfat 47096  df-afv2 47186
This theorem is referenced by: (None)
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