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Theorem strfvnd 17096
Description: Deduction version of strfvn 17097. (Contributed by Mario Carneiro, 15-Nov-2014.)
Hypotheses
Ref Expression
strfvnd.c 𝐸 = Slot 𝑁
strfvnd.f (𝜑𝑆𝑉)
Assertion
Ref Expression
strfvnd (𝜑 → (𝐸𝑆) = (𝑆𝑁))

Proof of Theorem strfvnd
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 strfvnd.f . 2 (𝜑𝑆𝑉)
2 elex 3457 . 2 (𝑆𝑉𝑆 ∈ V)
3 fveq1 6821 . . 3 (𝑥 = 𝑆 → (𝑥𝑁) = (𝑆𝑁))
4 strfvnd.c . . . 4 𝐸 = Slot 𝑁
5 df-slot 17093 . . . 4 Slot 𝑁 = (𝑥 ∈ V ↦ (𝑥𝑁))
64, 5eqtri 2752 . . 3 𝐸 = (𝑥 ∈ V ↦ (𝑥𝑁))
7 fvex 6835 . . 3 (𝑆𝑁) ∈ V
83, 6, 7fvmpt 6930 . 2 (𝑆 ∈ V → (𝐸𝑆) = (𝑆𝑁))
91, 2, 83syl 18 1 (𝜑 → (𝐸𝑆) = (𝑆𝑁))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1540  wcel 2109  Vcvv 3436  cmpt 5173  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-pr 5371
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-ss 3920  df-nul 4285  df-if 4477  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-iota 6438  df-fun 6484  df-fv 6490  df-slot 17093
This theorem is referenced by:  strfvn  17097  strfvss  17098  strndxid  17109  setsidvald  17110  strfvd  17111  strfv2d  17112  setsid  17118  setsnid  17119  estrreslem1  18043  edgfndxid  28942  bj-endbase  37310  bj-endcomp  37311
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