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Theorem 2wlkdlem7 30190
Description: Lemma 7 for 2wlkd 30194. (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 30189 . 2 (𝜑 → (𝐵 ∈ (𝐼𝐽) ∧ 𝐵 ∈ (𝐼𝐾)))
7 elfvex 6906 . . 3 (𝐵 ∈ (𝐼𝐽) → 𝐽 ∈ V)
8 elfvex 6906 . . 3 (𝐵 ∈ (𝐼𝐾) → 𝐾 ∈ V)
97, 8anim12i 624 . 2 ((𝐵 ∈ (𝐼𝐽) ∧ 𝐵 ∈ (𝐼𝐾)) → (𝐽 ∈ V ∧ 𝐾 ∈ V))
106, 9syl 18 1 (𝜑 → (𝐽 ∈ V ∧ 𝐾 ∈ V))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 400  w3a 1101   = wceq 1563  wcel 2145  wne 2960  Vcvv 3457  wss 3907  {cpr 4587  cfv 6525  ⟨“cs2 14868  ⟨“cs3 14869
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-ext 2737  ax-nul 5261  ax-pr 5395
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-ne 2961  df-rab 3418  df-v 3459  df-dif 3910  df-un 3912  df-ss 3924  df-nul 4289  df-if 4484  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4869  df-br 5106  df-dm 5662  df-iota 6481  df-fv 6533
This theorem is referenced by:  2wlkdlem8  30191  2trld  30196
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