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Theorem 2wlkdlem7 27713
Description: Lemma 7 for 2wlkd 27717. (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 27712 . 2 (𝜑 → (𝐵 ∈ (𝐼𝐽) ∧ 𝐵 ∈ (𝐼𝐾)))
7 elfvex 6705 . . 3 (𝐵 ∈ (𝐼𝐽) → 𝐽 ∈ V)
8 elfvex 6705 . . 3 (𝐵 ∈ (𝐼𝐾) → 𝐾 ∈ V)
97, 8anim12i 614 . 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 398  w3a 1083   = wceq 1537  wcel 2114  wne 3018  Vcvv 3496  wss 3938  {cpr 4571  cfv 6357  ⟨“cs2 14205  ⟨“cs3 14206
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-nul 5212  ax-pow 5268
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ral 3145  df-rex 3146  df-rab 3149  df-v 3498  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-nul 4294  df-if 4470  df-sn 4570  df-pr 4572  df-op 4576  df-uni 4841  df-br 5069  df-dm 5567  df-iota 6316  df-fv 6365
This theorem is referenced by:  2wlkdlem8  27714  2trld  27719
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