Theorem fuco2el 49553

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 5660	. 2 ⊢ (⟨⟨𝐾, 𝐿⟩, ⟨𝐹, 𝐺⟩⟩ ∈ (𝑆 × 𝑅) ↔ (⟨𝐾, 𝐿⟩ ∈ 𝑆 ∧ ⟨𝐹, 𝐺⟩ ∈ 𝑅))
2		df-br 5099	. . 3 ⊢ (𝐾𝑆𝐿 ↔ ⟨𝐾, 𝐿⟩ ∈ 𝑆)
3		df-br 5099	. . 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 2113  ⟨cop 4586   class class class wbr 5098   × cxp 5622

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-ext 2708  ax-sep 5241  ax-nul 5251  ax-pr 5377

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2715  df-cleq 2728  df-clel 2811  df-ral 3052  df-rex 3061  df-rab 3400  df-v 3442  df-dif 3904  df-un 3906  df-ss 3918  df-nul 4286  df-if 4480  df-sn 4581  df-pr 4583  df-op 4587  df-br 5099  df-opab 5161  df-xp 5630

This theorem is referenced by:  fuco2eld  49554  fuco2eld3  49556