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Theorem afv2elrn 44723
Description: An alternate function value belongs to the range of the function, analogous to fvelrn 6954. (Contributed by AV, 3-Sep-2022.)
Assertion
Ref Expression
afv2elrn ((Fun 𝐹𝐴 ∈ dom 𝐹) → (𝐹''''𝐴) ∈ ran 𝐹)

Proof of Theorem afv2elrn
StepHypRef Expression
1 fundmdfat 44621 . 2 ((Fun 𝐹𝐴 ∈ dom 𝐹) → 𝐹 defAt 𝐴)
2 dfatafv2rnb 44719 . 2 (𝐹 defAt 𝐴 ↔ (𝐹''''𝐴) ∈ ran 𝐹)
31, 2sylib 217 1 ((Fun 𝐹𝐴 ∈ dom 𝐹) → (𝐹''''𝐴) ∈ ran 𝐹)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396  wcel 2106  dom cdm 5589  ran crn 5590  Fun wfun 6427   defAt wdfat 44608  ''''cafv2 44700
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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-nel 3050  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-iota 6391  df-fun 6435  df-dfat 44611  df-afv2 44701
This theorem is referenced by:  fnafv2elrn  44725
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