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Theorem resoprab2 6922
Description: Restriction of an operator abstraction. (Contributed by Jeff Madsen, 2-Sep-2009.)
Assertion
Ref Expression
resoprab2 ((𝐶𝐴𝐷𝐵) → ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐴𝑦𝐵) ∧ 𝜑)} ↾ (𝐶 × 𝐷)) = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐶𝑦𝐷) ∧ 𝜑)})
Distinct variable groups:   𝑥,𝐴,𝑦,𝑧   𝑥,𝐵,𝑦,𝑧   𝑥,𝐶,𝑦,𝑧   𝑥,𝐷,𝑦,𝑧
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑧)

Proof of Theorem resoprab2
StepHypRef Expression
1 resoprab 6921 . 2 ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐴𝑦𝐵) ∧ 𝜑)} ↾ (𝐶 × 𝐷)) = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐶𝑦𝐷) ∧ ((𝑥𝐴𝑦𝐵) ∧ 𝜑))}
2 anass 684 . . . 4 ((((𝑥𝐶𝑦𝐷) ∧ (𝑥𝐴𝑦𝐵)) ∧ 𝜑) ↔ ((𝑥𝐶𝑦𝐷) ∧ ((𝑥𝐴𝑦𝐵) ∧ 𝜑)))
3 an4 900 . . . . . 6 (((𝑥𝐶𝑦𝐷) ∧ (𝑥𝐴𝑦𝐵)) ↔ ((𝑥𝐶𝑥𝐴) ∧ (𝑦𝐷𝑦𝐵)))
4 ssel 3738 . . . . . . . . 9 (𝐶𝐴 → (𝑥𝐶𝑥𝐴))
54pm4.71d 669 . . . . . . . 8 (𝐶𝐴 → (𝑥𝐶 ↔ (𝑥𝐶𝑥𝐴)))
65bicomd 213 . . . . . . 7 (𝐶𝐴 → ((𝑥𝐶𝑥𝐴) ↔ 𝑥𝐶))
7 ssel 3738 . . . . . . . . 9 (𝐷𝐵 → (𝑦𝐷𝑦𝐵))
87pm4.71d 669 . . . . . . . 8 (𝐷𝐵 → (𝑦𝐷 ↔ (𝑦𝐷𝑦𝐵)))
98bicomd 213 . . . . . . 7 (𝐷𝐵 → ((𝑦𝐷𝑦𝐵) ↔ 𝑦𝐷))
106, 9bi2anan9 953 . . . . . 6 ((𝐶𝐴𝐷𝐵) → (((𝑥𝐶𝑥𝐴) ∧ (𝑦𝐷𝑦𝐵)) ↔ (𝑥𝐶𝑦𝐷)))
113, 10syl5bb 272 . . . . 5 ((𝐶𝐴𝐷𝐵) → (((𝑥𝐶𝑦𝐷) ∧ (𝑥𝐴𝑦𝐵)) ↔ (𝑥𝐶𝑦𝐷)))
1211anbi1d 743 . . . 4 ((𝐶𝐴𝐷𝐵) → ((((𝑥𝐶𝑦𝐷) ∧ (𝑥𝐴𝑦𝐵)) ∧ 𝜑) ↔ ((𝑥𝐶𝑦𝐷) ∧ 𝜑)))
132, 12syl5bbr 274 . . 3 ((𝐶𝐴𝐷𝐵) → (((𝑥𝐶𝑦𝐷) ∧ ((𝑥𝐴𝑦𝐵) ∧ 𝜑)) ↔ ((𝑥𝐶𝑦𝐷) ∧ 𝜑)))
1413oprabbidv 6874 . 2 ((𝐶𝐴𝐷𝐵) → {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐶𝑦𝐷) ∧ ((𝑥𝐴𝑦𝐵) ∧ 𝜑))} = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐶𝑦𝐷) ∧ 𝜑)})
151, 14syl5eq 2806 1 ((𝐶𝐴𝐷𝐵) → ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐴𝑦𝐵) ∧ 𝜑)} ↾ (𝐶 × 𝐷)) = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝐶𝑦𝐷) ∧ 𝜑)})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 383   = wceq 1632  wcel 2139  wss 3715   × cxp 5264  cres 5268  {coprab 6814
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-sep 4933  ax-nul 4941  ax-pr 5055
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ral 3055  df-rex 3056  df-rab 3059  df-v 3342  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-nul 4059  df-if 4231  df-sn 4322  df-pr 4324  df-op 4328  df-opab 4865  df-xp 5272  df-rel 5273  df-res 5278  df-oprab 6817
This theorem is referenced by:  resmpt2  6923
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