Theorem fuco2el 49207

Description: Equivalence of product functor. (Contributed by Zhi Wang, 29-Sep-2025.)

Assertion

Ref	Expression
fuco2el	⊢ (⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅) ↔ (𝐾𝑆𝐿 ∧ 𝐹𝑅𝐺))

Proof of Theorem fuco2el

Step	Hyp	Ref	Expression
1		opelxp 5682	. 2 ⊢ (⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅) ↔ (⟨𝐾, 𝐿⟩ ∈ 𝑆 ∧ ⟨𝐹, 𝐺⟩ ∈ 𝑅))
2		df-br 5116	. . 3 ⊢ (𝐾𝑆𝐿 ↔ ⟨𝐾, 𝐿⟩ ∈ 𝑆)
3		df-br 5116	. . 3 ⊢ (𝐹𝑅𝐺 ↔ ⟨𝐹, 𝐺⟩ ∈ 𝑅)
4	2, 3	anbi12i 628	. 2 ⊢ ((𝐾𝑆𝐿 ∧ 𝐹𝑅𝐺) ↔ (⟨𝐾, 𝐿⟩ ∈ 𝑆 ∧ ⟨𝐹, 𝐺⟩ ∈ 𝑅))
5	1, 4	bitr4i 278	1 ⊢ (⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅) ↔ (𝐾𝑆𝐿 ∧ 𝐹𝑅𝐺))

Syntax hints:   ↔ wb 206   ∧ wa 395   ∈ wcel 2109  ⟨cop 4603   class class class wbr 5115   × cxp 5644

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-ext 2702  ax-sep 5259  ax-nul 5269  ax-pr 5395

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-sb 2066  df-clab 2709  df-cleq 2722  df-clel 2804  df-ral 3047  df-rex 3056  df-rab 3412  df-v 3457  df-dif 3925  df-un 3927  df-ss 3939  df-nul 4305  df-if 4497  df-sn 4598  df-pr 4600  df-op 4604  df-br 5116  df-opab 5178  df-xp 5652

This theorem is referenced by:  fuco2eld  49208  fuco2eld3  49210