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Theorem 2wlkdlem7 29965
Description: Lemma 7 for 2wlkd 29969. (Contributed by AV, 14-Feb-2021.)
Hypotheses
Ref Expression
2wlkd.p 𝑃 = ⟨“𝐴𝐵𝐶”⟩
2wlkd.f 𝐹 = ⟨“𝐽𝐾”⟩
2wlkd.s (𝜑 → (𝐴𝑉𝐵𝑉𝐶𝑉))
2wlkd.n (𝜑 → (𝐴𝐵𝐵𝐶))
2wlkd.e (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼𝐾)))
Assertion
Ref Expression
2wlkdlem7 (𝜑 → (𝐽 ∈ V ∧ 𝐾 ∈ V))

Proof of Theorem 2wlkdlem7
StepHypRef Expression
1 2wlkd.p . . 3 𝑃 = ⟨“𝐴𝐵𝐶”⟩
2 2wlkd.f . . 3 𝐹 = ⟨“𝐽𝐾”⟩
3 2wlkd.s . . 3 (𝜑 → (𝐴𝑉𝐵𝑉𝐶𝑉))
4 2wlkd.n . . 3 (𝜑 → (𝐴𝐵𝐵𝐶))
5 2wlkd.e . . 3 (𝜑 → ({𝐴, 𝐵} ⊆ (𝐼𝐽) ∧ {𝐵, 𝐶} ⊆ (𝐼𝐾)))
61, 2, 3, 4, 52wlkdlem6 29964 . 2 (𝜑 → (𝐵 ∈ (𝐼𝐽) ∧ 𝐵 ∈ (𝐼𝐾)))
7 elfvex 6958 . . 3 (𝐵 ∈ (𝐼𝐽) → 𝐽 ∈ V)
8 elfvex 6958 . . 3 (𝐵 ∈ (𝐼𝐾) → 𝐾 ∈ V)
97, 8anim12i 612 . 2 ((𝐵 ∈ (𝐼𝐽) ∧ 𝐵 ∈ (𝐼𝐾)) → (𝐽 ∈ V ∧ 𝐾 ∈ V))
106, 9syl 17 1 (𝜑 → (𝐽 ∈ V ∧ 𝐾 ∈ V))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1087   = wceq 1537  wcel 2108  wne 2946  Vcvv 3488  wss 3976  {cpr 4650  cfv 6573  ⟨“cs2 14890  ⟨“cs3 14891
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-nul 5324  ax-pr 5447
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-ral 3068  df-rex 3077  df-rab 3444  df-v 3490  df-dif 3979  df-un 3981  df-ss 3993  df-nul 4353  df-if 4549  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-dm 5710  df-iota 6525  df-fv 6581
This theorem is referenced by:  2wlkdlem8  29966  2trld  29971
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