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Theorem bj-evalfun 34507
 Description: The evaluation at a class is a function. (Contributed by BJ, 27-Dec-2021.)
Assertion
Ref Expression
bj-evalfun Fun Slot 𝐴

Proof of Theorem bj-evalfun
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 df-slot 16482 . 2 Slot 𝐴 = (𝑓 ∈ V ↦ (𝑓𝐴))
21funmpt2 6364 1 Fun Slot 𝐴
 Colors of variables: wff setvar class Syntax hints:  Vcvv 3441  Fun wfun 6319  ‘cfv 6325  Slot cslot 16477 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-sep 5168  ax-nul 5175  ax-pr 5296 This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ral 3111  df-v 3443  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-sn 4526  df-pr 4528  df-op 4532  df-br 5032  df-opab 5094  df-mpt 5112  df-id 5426  df-xp 5526  df-rel 5527  df-cnv 5528  df-co 5529  df-fun 6327  df-slot 16482 This theorem is referenced by:  bj-isrvec  34727
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