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Theorem strslfv2d 13186
Description: Deduction version of strslfv 13188. (Contributed by Mario Carneiro, 30-Apr-2015.) (Revised by Jim Kingdon, 30-Jan-2023.)
Hypotheses
Ref Expression
strslfv2d.e (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ)
strfv2d.s (𝜑𝑆𝑉)
strfv2d.f (𝜑 → Fun 𝑆)
strfv2d.n (𝜑 → ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆)
strfv2d.c (𝜑𝐶𝑊)
Assertion
Ref Expression
strslfv2d (𝜑𝐶 = (𝐸𝑆))

Proof of Theorem strslfv2d
StepHypRef Expression
1 strslfv2d.e . . . 4 (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ)
21simpli 111 . . 3 𝐸 = Slot (𝐸‘ndx)
3 strfv2d.s . . 3 (𝜑𝑆𝑉)
41simpri 113 . . . 4 (𝐸‘ndx) ∈ ℕ
54a1i 9 . . 3 (𝜑 → (𝐸‘ndx) ∈ ℕ)
62, 3, 5strnfvnd 13163 . 2 (𝜑 → (𝐸𝑆) = (𝑆‘(𝐸‘ndx)))
7 cnvcnv2 5197 . . . 4 𝑆 = (𝑆 ↾ V)
87fveq1i 5649 . . 3 (𝑆‘(𝐸‘ndx)) = ((𝑆 ↾ V)‘(𝐸‘ndx))
95elexd 2817 . . . 4 (𝜑 → (𝐸‘ndx) ∈ V)
10 fvres 5672 . . . 4 ((𝐸‘ndx) ∈ V → ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx)))
119, 10syl 14 . . 3 (𝜑 → ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx)))
128, 11eqtrid 2276 . 2 (𝜑 → (𝑆‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx)))
13 strfv2d.f . . 3 (𝜑 → Fun 𝑆)
14 strfv2d.n . . . . 5 (𝜑 → ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆)
15 strfv2d.c . . . . . . 7 (𝜑𝐶𝑊)
1615elexd 2817 . . . . . 6 (𝜑𝐶 ∈ V)
179, 16opelxpd 4764 . . . . 5 (𝜑 → ⟨(𝐸‘ndx), 𝐶⟩ ∈ (V × V))
1814, 17elind 3394 . . . 4 (𝜑 → ⟨(𝐸‘ndx), 𝐶⟩ ∈ (𝑆 ∩ (V × V)))
19 cnvcnv 5196 . . . 4 𝑆 = (𝑆 ∩ (V × V))
2018, 19eleqtrrdi 2325 . . 3 (𝜑 → ⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆)
21 funopfv 5692 . . 3 (Fun 𝑆 → (⟨(𝐸‘ndx), 𝐶⟩ ∈ 𝑆 → (𝑆‘(𝐸‘ndx)) = 𝐶))
2213, 20, 21sylc 62 . 2 (𝜑 → (𝑆‘(𝐸‘ndx)) = 𝐶)
236, 12, 223eqtr2rd 2271 1 (𝜑𝐶 = (𝐸𝑆))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 104   = wceq 1398  wcel 2202  Vcvv 2803  cin 3200  cop 3676   × cxp 4729  ccnv 4730  cres 4733  Fun wfun 5327  cfv 5333  cn 9186  ndxcnx 13140  Slot cslot 13142
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305  ax-un 4536
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-v 2805  df-sbc 3033  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-uni 3899  df-br 4094  df-opab 4156  df-mpt 4157  df-id 4396  df-xp 4737  df-rel 4738  df-cnv 4739  df-co 4740  df-dm 4741  df-rn 4742  df-res 4743  df-iota 5293  df-fun 5335  df-fv 5341  df-slot 13147
This theorem is referenced by:  strslfv2  13187  strslfv  13188  strslfv3  13189  opelstrsl  13258
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