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Theorem strfvnd 17146
Description: Deduction version of strfvn 17147. (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 3451 . 2 (𝑆𝑉𝑆 ∈ V)
3 fveq1 6833 . . 3 (𝑥 = 𝑆 → (𝑥𝑁) = (𝑆𝑁))
4 strfvnd.c . . . 4 𝐸 = Slot 𝑁
5 df-slot 17143 . . . 4 Slot 𝑁 = (𝑥 ∈ V ↦ (𝑥𝑁))
64, 5eqtri 2760 . . 3 𝐸 = (𝑥 ∈ V ↦ (𝑥𝑁))
7 fvex 6847 . . 3 (𝑆𝑁) ∈ V
83, 6, 7fvmpt 6941 . 2 (𝑆 ∈ V → (𝐸𝑆) = (𝑆𝑁))
91, 2, 83syl 18 1 (𝜑 → (𝐸𝑆) = (𝑆𝑁))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1542  wcel 2114  Vcvv 3430  cmpt 5167  cfv 6492  Slot cslot 17142
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 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-sep 5231  ax-nul 5241  ax-pr 5370
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-iota 6448  df-fun 6494  df-fv 6500  df-slot 17143
This theorem is referenced by:  strfvn  17147  strfvss  17148  strndxid  17159  setsidvald  17160  strfvd  17161  strfv2d  17162  setsid  17168  setsnid  17169  estrreslem1  18094  edgfndxid  29076  bj-endbase  37646  bj-endcomp  37647
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