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Theorem fuco2eld 48968
Description: Equivalence of product functor. (Contributed by Zhi Wang, 29-Sep-2025.)
Hypotheses
Ref Expression
fuco2eld.w (𝜑𝑊 = (𝑆 × 𝑅))
fuco2eld.u (𝜑𝑈 = ⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩)
fuco2eld.k (𝜑𝐾𝑆𝐿)
fuco2eld.f (𝜑𝐹𝑅𝐺)
Assertion
Ref Expression
fuco2eld (𝜑𝑈𝑊)

Proof of Theorem fuco2eld
StepHypRef Expression
1 fuco2eld.k . . 3 (𝜑𝐾𝑆𝐿)
2 fuco2eld.f . . 3 (𝜑𝐹𝑅𝐺)
3 fuco2el 48967 . . 3 (⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅) ↔ (𝐾𝑆𝐿𝐹𝑅𝐺))
41, 2, 3sylanbrc 583 . 2 (𝜑 → ⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅))
5 fuco2eld.u . 2 (𝜑𝑈 = ⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩)
6 fuco2eld.w . 2 (𝜑𝑊 = (𝑆 × 𝑅))
74, 5, 63eltr4d 2848 1 (𝜑𝑈𝑊)
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1539  wcel 2107  cop 4614   class class class wbr 5125   × cxp 5665
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-ext 2706  ax-sep 5278  ax-nul 5288  ax-pr 5414
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-sb 2064  df-clab 2713  df-cleq 2726  df-clel 2808  df-ral 3051  df-rex 3060  df-rab 3421  df-v 3466  df-dif 3936  df-un 3938  df-ss 3950  df-nul 4316  df-if 4508  df-sn 4609  df-pr 4611  df-op 4615  df-br 5126  df-opab 5188  df-xp 5673
This theorem is referenced by:  fuco11  48981  fuco11cl  48982  fuco21  48991
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