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Theorem opabbrfexd 48573
Description: A collection of ordered pairs, the second component being a function, is a set. (Contributed by AV, 15-Jan-2021.)
Hypotheses
Ref Expression
opabresexd.x ((𝜑 ∧ 𝑥𝑅𝑦) → 𝑥 ∈ 𝐶)
opabresexd.y ((𝜑 ∧ 𝑥𝑅𝑦) → 𝑦:𝐴⟶𝐵)
opabresexd.a ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐴 ∈ 𝑈)
opabresexd.b ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐵 ∈ 𝑉)
opabresexd.c (𝜑 → 𝐶 ∈ 𝑊)
Assertion
Ref Expression
opabbrfexd (𝜑 → {⟨𝑥, 𝑦⟩ ∣ 𝑥𝑅𝑦} ∈ V)
Distinct variable groups:   𝑦,𝐴   𝑦,𝐵   𝑥,𝐶,𝑦   𝜑,𝑥,𝑦
Allowed substitution hints:   𝐴(𝑥)   𝐵(𝑥)   𝑅(𝑥, 𝑦)   𝑈(𝑥, 𝑦)   𝑉(𝑥, 𝑦)   𝑊(𝑥, 𝑦)

Proof of Theorem opabbrfexd
StepHypRef Expression
1 pm4.24 574 . . 3 (𝑥𝑅𝑦 ↔ (𝑥𝑅𝑦 ∧ 𝑥𝑅𝑦))
21opabbii 5176 . 2 {⟨𝑥, 𝑦⟩ ∣ 𝑥𝑅𝑦} = {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦 ∧ 𝑥𝑅𝑦)}
3 opabresexd.x . . 3 ((𝜑 ∧ 𝑥𝑅𝑦) → 𝑥 ∈ 𝐶)
4 opabresexd.y . . 3 ((𝜑 ∧ 𝑥𝑅𝑦) → 𝑦:𝐴⟶𝐵)
5 opabresexd.a . . 3 ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐴 ∈ 𝑈)
6 opabresexd.b . . 3 ((𝜑 ∧ 𝑥 ∈ 𝐶) → 𝐵 ∈ 𝑉)
7 opabresexd.c . . 3 (𝜑 → 𝐶 ∈ 𝑊)
83, 4, 5, 6, 7opabresexd 48572 . 2 (𝜑 → {⟨𝑥, 𝑦⟩ ∣ (𝑥𝑅𝑦 ∧ 𝑥𝑅𝑦)} ∈ V)
92, 8eqeltrid 2868 1 (𝜑 → {⟨𝑥, 𝑦⟩ ∣ 𝑥𝑅𝑦} ∈ V)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∈ wcel 2147  Vcvv 3454   class class class wbr 5106  {copab 5171  ⟶wf 6557
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-rep 5236  ax-sep 5253  ax-pow 5332  ax-pr 5396  ax-un 7778
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-clab 2742  df-cleq 2755  df-clel 2839  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-iun 4956  df-br 5107  df-opab 5172  df-xp 5662  df-rel 5663  df-cnv 5664  df-dm 5666  df-rn 5667  df-fun 6563  df-fn 6564  df-f 6565
This theorem is used by: (None)
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