Theorem bj-evalidval 37056

Description: Closed general form of strndxid 17109. Both sides are equal to (𝐹‘𝐴) by bj-evalid 37054 and bj-evalval 37053 respectively, but bj-evalidval 37056 adds something to bj-evalid 37054 and bj-evalval 37053 in that Slot 𝐴 appears on both sides. (Contributed by BJ, 27-Dec-2021.)

Assertion

Ref	Expression
bj-evalidval	⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉 ∧ 𝐹 ∈ 𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (Slot 𝐴‘𝐹))

Proof of Theorem bj-evalidval

Step	Hyp	Ref	Expression
1		bj-evalid 37054	. . . 4 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → (Slot 𝐴‘( I ↾ 𝑉)) = 𝐴)
2	1	fveq2d 6826	. . 3 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (𝐹‘𝐴))
3	2	3adant3 1132	. 2 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉 ∧ 𝐹 ∈ 𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (𝐹‘𝐴))
4		bj-evalval 37053	. . . 4 ⊢ (𝐹 ∈ 𝑈 → (Slot 𝐴‘𝐹) = (𝐹‘𝐴))
5	4	eqcomd 2735	. . 3 ⊢ (𝐹 ∈ 𝑈 → (𝐹‘𝐴) = (Slot 𝐴‘𝐹))
6	5	3ad2ant3 1135	. 2 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉 ∧ 𝐹 ∈ 𝑈) → (𝐹‘𝐴) = (Slot 𝐴‘𝐹))
7	3, 6	eqtrd 2764	1 ⊢ ((𝑉 ∈ 𝑊 ∧ 𝐴 ∈ 𝑉 ∧ 𝐹 ∈ 𝑈) → (𝐹‘(Slot 𝐴‘( I ↾ 𝑉))) = (Slot 𝐴‘𝐹))

Syntax hints:   → wi 4   ∧ wa 395   ∧ w3a 1086   = wceq 1540   ∈ wcel 2109   I cid 5513   ↾ cres 5621  ‘cfv 6482  Slot cslot 17092

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 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5235  ax-nul 5245  ax-pow 5304  ax-pr 5371  ax-un 7671

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 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rab 3395  df-v 3438  df-dif 3906  df-un 3908  df-in 3910  df-ss 3920  df-nul 4285  df-if 4477  df-pw 4553  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4859  df-br 5093  df-opab 5155  df-mpt 5174  df-id 5514  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-res 5631  df-iota 6438  df-fun 6484  df-fv 6490  df-slot 17093

This theorem is referenced by: (None)