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Theorem bj-evalidval 37044
Description: Closed general form of strndxid 17245. Both sides are equal to (𝐹𝐴) by bj-evalid 37042 and bj-evalval 37041 respectively, but bj-evalidval 37044 adds something to bj-evalid 37042 and bj-evalval 37041 in that Slot 𝐴 appears on both sides. (Contributed by BJ, 27-Dec-2021.)
Assertion
Ref Expression
bj-evalidval ((𝑉𝑊𝐴𝑉𝐹𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (Slot 𝐴𝐹))

Proof of Theorem bj-evalidval
StepHypRef Expression
1 bj-evalid 37042 . . . 4 ((𝑉𝑊𝐴𝑉) → (Slot 𝐴‘( I ↾ 𝑉)) = 𝐴)
21fveq2d 6924 . . 3 ((𝑉𝑊𝐴𝑉) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (𝐹𝐴))
323adant3 1132 . 2 ((𝑉𝑊𝐴𝑉𝐹𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (𝐹𝐴))
4 bj-evalval 37041 . . . 4 (𝐹𝑈 → (Slot 𝐴𝐹) = (𝐹𝐴))
54eqcomd 2746 . . 3 (𝐹𝑈 → (𝐹𝐴) = (Slot 𝐴𝐹))
653ad2ant3 1135 . 2 ((𝑉𝑊𝐴𝑉𝐹𝑈) → (𝐹𝐴) = (Slot 𝐴𝐹))
73, 6eqtrd 2780 1 ((𝑉𝑊𝐴𝑉𝐹𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (Slot 𝐴𝐹))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1087   = wceq 1537  wcel 2108   I cid 5592  cres 5702  cfv 6573  Slot cslot 17228
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2158  ax-12 2178  ax-ext 2711  ax-sep 5317  ax-nul 5324  ax-pow 5383  ax-pr 5447  ax-un 7770
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-nf 1782  df-sb 2065  df-mo 2543  df-eu 2572  df-clab 2718  df-cleq 2732  df-clel 2819  df-nfc 2895  df-ne 2947  df-ral 3068  df-rex 3077  df-rab 3444  df-v 3490  df-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-nul 4353  df-if 4549  df-pw 4624  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-opab 5229  df-mpt 5250  df-id 5593  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-res 5712  df-iota 6525  df-fun 6575  df-fv 6581  df-slot 17229
This theorem is referenced by: (None)
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