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Theorem 3optocl 5231
Description: Implicit substitution of classes for ordered pairs. (Contributed by NM, 12-Mar-1995.)
Hypotheses
Ref Expression
3optocl.1 𝑅 = (𝐷 × 𝐹)
3optocl.2 (⟨𝑥, 𝑦⟩ = 𝐴 → (𝜑𝜓))
3optocl.3 (⟨𝑧, 𝑤⟩ = 𝐵 → (𝜓𝜒))
3optocl.4 (⟨𝑣, 𝑢⟩ = 𝐶 → (𝜒𝜃))
3optocl.5 (((𝑥𝐷𝑦𝐹) ∧ (𝑧𝐷𝑤𝐹) ∧ (𝑣𝐷𝑢𝐹)) → 𝜑)
Assertion
Ref Expression
3optocl ((𝐴𝑅𝐵𝑅𝐶𝑅) → 𝜃)
Distinct variable groups:   𝑥,𝑦,𝑧,𝑤,𝑣,𝑢,𝐴   𝑧,𝐵,𝑤,𝑣,𝑢   𝑣,𝐶,𝑢   𝑥,𝐷,𝑦,𝑧,𝑤,𝑣,𝑢   𝑥,𝐹,𝑦,𝑧,𝑤,𝑣,𝑢   𝑧,𝑅,𝑤,𝑣,𝑢   𝜓,𝑥,𝑦   𝜒,𝑧,𝑤   𝜃,𝑣,𝑢
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑧,𝑤,𝑣,𝑢)   𝜓(𝑧,𝑤,𝑣,𝑢)   𝜒(𝑥,𝑦,𝑣,𝑢)   𝜃(𝑥,𝑦,𝑧,𝑤)   𝐵(𝑥,𝑦)   𝐶(𝑥,𝑦,𝑧,𝑤)   𝑅(𝑥,𝑦)

Proof of Theorem 3optocl
StepHypRef Expression
1 3optocl.1 . . . 4 𝑅 = (𝐷 × 𝐹)
2 3optocl.4 . . . . 5 (⟨𝑣, 𝑢⟩ = 𝐶 → (𝜒𝜃))
32imbi2d 329 . . . 4 (⟨𝑣, 𝑢⟩ = 𝐶 → (((𝐴𝑅𝐵𝑅) → 𝜒) ↔ ((𝐴𝑅𝐵𝑅) → 𝜃)))
4 3optocl.2 . . . . . . 7 (⟨𝑥, 𝑦⟩ = 𝐴 → (𝜑𝜓))
54imbi2d 329 . . . . . 6 (⟨𝑥, 𝑦⟩ = 𝐴 → (((𝑣𝐷𝑢𝐹) → 𝜑) ↔ ((𝑣𝐷𝑢𝐹) → 𝜓)))
6 3optocl.3 . . . . . . 7 (⟨𝑧, 𝑤⟩ = 𝐵 → (𝜓𝜒))
76imbi2d 329 . . . . . 6 (⟨𝑧, 𝑤⟩ = 𝐵 → (((𝑣𝐷𝑢𝐹) → 𝜓) ↔ ((𝑣𝐷𝑢𝐹) → 𝜒)))
8 3optocl.5 . . . . . . 7 (((𝑥𝐷𝑦𝐹) ∧ (𝑧𝐷𝑤𝐹) ∧ (𝑣𝐷𝑢𝐹)) → 𝜑)
983expia 1286 . . . . . 6 (((𝑥𝐷𝑦𝐹) ∧ (𝑧𝐷𝑤𝐹)) → ((𝑣𝐷𝑢𝐹) → 𝜑))
101, 5, 7, 92optocl 5230 . . . . 5 ((𝐴𝑅𝐵𝑅) → ((𝑣𝐷𝑢𝐹) → 𝜒))
1110com12 32 . . . 4 ((𝑣𝐷𝑢𝐹) → ((𝐴𝑅𝐵𝑅) → 𝜒))
121, 3, 11optocl 5229 . . 3 (𝐶𝑅 → ((𝐴𝑅𝐵𝑅) → 𝜃))
1312impcom 445 . 2 (((𝐴𝑅𝐵𝑅) ∧ 𝐶𝑅) → 𝜃)
14133impa 1278 1 ((𝐴𝑅𝐵𝑅𝐶𝑅) → 𝜃)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 383  w3a 1054   = wceq 1523  wcel 2030  cop 4216   × cxp 5141
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pr 4936
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ral 2946  df-rex 2947  df-rab 2950  df-v 3233  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-sn 4211  df-pr 4213  df-op 4217  df-opab 4746  df-xp 5149
This theorem is referenced by:  ecopovtrn  7893
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