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Theorem ov 7014
Description: The value of an operation class abstraction. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.)
Hypotheses
Ref Expression
ov.1 𝐶 ∈ V
ov.2 (𝑥 = 𝐴 → (𝜑𝜓))
ov.3 (𝑦 = 𝐵 → (𝜓𝜒))
ov.4 (𝑧 = 𝐶 → (𝜒𝜃))
ov.5 ((𝑥𝑅𝑦𝑆) → ∃!𝑧𝜑)
ov.6 𝐹 = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}
Assertion
Ref Expression
ov ((𝐴𝑅𝐵𝑆) → ((𝐴𝐹𝐵) = 𝐶𝜃))
Distinct variable groups:   𝑥,𝑦,𝑧,𝐴   𝑥,𝐵,𝑦,𝑧   𝑥,𝐶,𝑦,𝑧   𝑥,𝑅,𝑦,𝑧   𝑥,𝑆,𝑦,𝑧   𝜃,𝑥,𝑦,𝑧
Allowed substitution hints:   𝜑(𝑥,𝑦,𝑧)   𝜓(𝑥,𝑦,𝑧)   𝜒(𝑥,𝑦,𝑧)   𝐹(𝑥,𝑦,𝑧)

Proof of Theorem ov
StepHypRef Expression
1 df-ov 6881 . . . . 5 (𝐴𝐹𝐵) = (𝐹‘⟨𝐴, 𝐵⟩)
2 ov.6 . . . . . 6 𝐹 = {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}
32fveq1i 6412 . . . . 5 (𝐹‘⟨𝐴, 𝐵⟩) = ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩)
41, 3eqtri 2821 . . . 4 (𝐴𝐹𝐵) = ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩)
54eqeq1i 2804 . . 3 ((𝐴𝐹𝐵) = 𝐶 ↔ ({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩) = 𝐶)
6 ov.5 . . . . . 6 ((𝑥𝑅𝑦𝑆) → ∃!𝑧𝜑)
76fnoprab 6997 . . . . 5 {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)} Fn {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦𝑆)}
8 eleq1 2866 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝑅𝐴𝑅))
98anbi1d 624 . . . . . . 7 (𝑥 = 𝐴 → ((𝑥𝑅𝑦𝑆) ↔ (𝐴𝑅𝑦𝑆)))
10 eleq1 2866 . . . . . . . 8 (𝑦 = 𝐵 → (𝑦𝑆𝐵𝑆))
1110anbi2d 623 . . . . . . 7 (𝑦 = 𝐵 → ((𝐴𝑅𝑦𝑆) ↔ (𝐴𝑅𝐵𝑆)))
129, 11opelopabg 5189 . . . . . 6 ((𝐴𝑅𝐵𝑆) → (⟨𝐴, 𝐵⟩ ∈ {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦𝑆)} ↔ (𝐴𝑅𝐵𝑆)))
1312ibir 260 . . . . 5 ((𝐴𝑅𝐵𝑆) → ⟨𝐴, 𝐵⟩ ∈ {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦𝑆)})
14 fnopfvb 6461 . . . . 5 (({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)} Fn {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦𝑆)} ∧ ⟨𝐴, 𝐵⟩ ∈ {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦𝑆)}) → (({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩) = 𝐶 ↔ ⟨⟨𝐴, 𝐵⟩, 𝐶⟩ ∈ {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}))
157, 13, 14sylancr 582 . . . 4 ((𝐴𝑅𝐵𝑆) → (({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩) = 𝐶 ↔ ⟨⟨𝐴, 𝐵⟩, 𝐶⟩ ∈ {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}))
16 ov.1 . . . . 5 𝐶 ∈ V
17 ov.2 . . . . . . 7 (𝑥 = 𝐴 → (𝜑𝜓))
189, 17anbi12d 625 . . . . . 6 (𝑥 = 𝐴 → (((𝑥𝑅𝑦𝑆) ∧ 𝜑) ↔ ((𝐴𝑅𝑦𝑆) ∧ 𝜓)))
19 ov.3 . . . . . . 7 (𝑦 = 𝐵 → (𝜓𝜒))
2011, 19anbi12d 625 . . . . . 6 (𝑦 = 𝐵 → (((𝐴𝑅𝑦𝑆) ∧ 𝜓) ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜒)))
21 ov.4 . . . . . . 7 (𝑧 = 𝐶 → (𝜒𝜃))
2221anbi2d 623 . . . . . 6 (𝑧 = 𝐶 → (((𝐴𝑅𝐵𝑆) ∧ 𝜒) ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜃)))
2318, 20, 22eloprabg 6982 . . . . 5 ((𝐴𝑅𝐵𝑆𝐶 ∈ V) → (⟨⟨𝐴, 𝐵⟩, 𝐶⟩ ∈ {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)} ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜃)))
2416, 23mp3an3 1575 . . . 4 ((𝐴𝑅𝐵𝑆) → (⟨⟨𝐴, 𝐵⟩, 𝐶⟩ ∈ {⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)} ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜃)))
2515, 24bitrd 271 . . 3 ((𝐴𝑅𝐵𝑆) → (({⟨⟨𝑥, 𝑦⟩, 𝑧⟩ ∣ ((𝑥𝑅𝑦𝑆) ∧ 𝜑)}‘⟨𝐴, 𝐵⟩) = 𝐶 ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜃)))
265, 25syl5bb 275 . 2 ((𝐴𝑅𝐵𝑆) → ((𝐴𝐹𝐵) = 𝐶 ↔ ((𝐴𝑅𝐵𝑆) ∧ 𝜃)))
2726bianabs 538 1 ((𝐴𝑅𝐵𝑆) → ((𝐴𝐹𝐵) = 𝐶𝜃))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 198  wa 385   = wceq 1653  wcel 2157  ∃!weu 2608  Vcvv 3385  cop 4374  {copab 4905   Fn wfn 6096  cfv 6101  (class class class)co 6878  {coprab 6879
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2377  ax-ext 2777  ax-sep 4975  ax-nul 4983  ax-pr 5097
This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3an 1110  df-tru 1657  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2591  df-eu 2609  df-clab 2786  df-cleq 2792  df-clel 2795  df-nfc 2930  df-ral 3094  df-rex 3095  df-rab 3098  df-v 3387  df-sbc 3634  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-nul 4116  df-if 4278  df-sn 4369  df-pr 4371  df-op 4375  df-uni 4629  df-br 4844  df-opab 4906  df-id 5220  df-xp 5318  df-rel 5319  df-cnv 5320  df-co 5321  df-dm 5322  df-iota 6064  df-fun 6103  df-fn 6104  df-fv 6109  df-ov 6881  df-oprab 6882
This theorem is referenced by: (None)
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