Theorem prdstset

Description: Structure product topology. (Contributed by Mario Carneiro, 15-Aug-2015) (Revised by Thierry Arnoux, 16-Jun-2019) (Revised by Zhi Wang, 18-Aug-2024)

	Ref	Expression
Hypotheses	prdsbas.p	⊢ 𝑃 = ( 𝑆 Xs 𝑅 )
	prdsbas.s	⊢ ( 𝜑 → 𝑆 ∈ 𝑉 )
	prdsbas.r	⊢ ( 𝜑 → 𝑅 ∈ 𝑊 )
	prdsbas.b	⊢ 𝐵 = ( Base ‘ 𝑃 )
	prdsbas.i	⊢ ( 𝜑 → dom 𝑅 = 𝐼 )
	prdstset.l	⊢ 𝑂 = ( TopSet ‘ 𝑃 )
Assertion	prdstset	⊢ ( 𝜑 → 𝑂 = ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) )

Proof

Step	Hyp	Ref	Expression
1		prdsbas.p	⊢ 𝑃 = ( 𝑆 Xs 𝑅 )
2		prdsbas.s	⊢ ( 𝜑 → 𝑆 ∈ 𝑉 )
3		prdsbas.r	⊢ ( 𝜑 → 𝑅 ∈ 𝑊 )
4		prdsbas.b	⊢ 𝐵 = ( Base ‘ 𝑃 )
5		prdsbas.i	⊢ ( 𝜑 → dom 𝑅 = 𝐼 )
6		prdstset.l	⊢ 𝑂 = ( TopSet ‘ 𝑃 )
7		eqid	⊢ ( Base ‘ 𝑆 ) = ( Base ‘ 𝑆 )
8	1 2 3 4 5	prdsbas	⊢ ( 𝜑 → 𝐵 = X 𝑥 ∈ 𝐼 ( Base ‘ ( 𝑅 ‘ 𝑥 ) ) )
9		eqid	⊢ ( +g ‘ 𝑃 ) = ( +g ‘ 𝑃 )
10	1 2 3 4 5 9	prdsplusg	⊢ ( 𝜑 → ( +g ‘ 𝑃 ) = ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( +g ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) )
11		eqid	⊢ ( .r ‘ 𝑃 ) = ( .r ‘ 𝑃 )
12	1 2 3 4 5 11	prdsmulr	⊢ ( 𝜑 → ( .r ‘ 𝑃 ) = ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( .r ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) )
13		eqid	⊢ ( ·𝑠 ‘ 𝑃 ) = ( ·𝑠 ‘ 𝑃 )
14	1 2 3 4 5 7 13	prdsvsca	⊢ ( 𝜑 → ( ·𝑠 ‘ 𝑃 ) = ( 𝑓 ∈ ( Base ‘ 𝑆 ) , 𝑔 ∈ 𝐵 ↦ ( 𝑥 ∈ 𝐼 ↦ ( 𝑓 ( ·𝑠 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) )
15		eqidd	⊢ ( 𝜑 → ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑆 Σg ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( ·𝑖 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) ) = ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑆 Σg ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( ·𝑖 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) ) )
16		eqidd	⊢ ( 𝜑 → ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) = ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) )
17		eqid	⊢ ( le ‘ 𝑃 ) = ( le ‘ 𝑃 )
18	1 2 3 4 5 17	prdsle	⊢ ( 𝜑 → ( le ‘ 𝑃 ) = { ⟨ 𝑓 , 𝑔 ⟩ ∣ ( { 𝑓 , 𝑔 } ⊆ 𝐵 ∧ ∀ 𝑥 ∈ 𝐼 ( 𝑓 ‘ 𝑥 ) ( le ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) } )
19		eqid	⊢ ( dist ‘ 𝑃 ) = ( dist ‘ 𝑃 )
20	1 2 3 4 5 19	prdsds	⊢ ( 𝜑 → ( dist ‘ 𝑃 ) = ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ sup ( ( ran ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( dist ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ∪ { 0 } ) , ℝ* , < ) ) )
21		eqidd	⊢ ( 𝜑 → ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) = ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) )
22		eqidd	⊢ ( 𝜑 → ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) = ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) )
23	1 7 5 8 10 12 14 15 16 18 20 21 22 2 3	prdsval	⊢ ( 𝜑 → 𝑃 = ( ( { ⟨ ( Base ‘ ndx ) , 𝐵 ⟩ , ⟨ ( +g ‘ ndx ) , ( +g ‘ 𝑃 ) ⟩ , ⟨ ( .r ‘ ndx ) , ( .r ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Scalar ‘ ndx ) , 𝑆 ⟩ , ⟨ ( ·𝑠 ‘ ndx ) , ( ·𝑠 ‘ 𝑃 ) ⟩ , ⟨ ( ·𝑖 ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑆 Σg ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( ·𝑖 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) ) ⟩ } ) ∪ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } ) ) )
24		tsetid	⊢ TopSet = Slot ( TopSet ‘ ndx )
25		fvexd	⊢ ( 𝜑 → ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ∈ V )
26		snsstp1	⊢ { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ } ⊆ { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ }
27		ssun1	⊢ { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ⊆ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } )
28	26 27	sstri	⊢ { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ } ⊆ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } )
29		ssun2	⊢ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } ) ⊆ ( ( { ⟨ ( Base ‘ ndx ) , 𝐵 ⟩ , ⟨ ( +g ‘ ndx ) , ( +g ‘ 𝑃 ) ⟩ , ⟨ ( .r ‘ ndx ) , ( .r ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Scalar ‘ ndx ) , 𝑆 ⟩ , ⟨ ( ·𝑠 ‘ ndx ) , ( ·𝑠 ‘ 𝑃 ) ⟩ , ⟨ ( ·𝑖 ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑆 Σg ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( ·𝑖 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) ) ⟩ } ) ∪ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } ) )
30	28 29	sstri	⊢ { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ } ⊆ ( ( { ⟨ ( Base ‘ ndx ) , 𝐵 ⟩ , ⟨ ( +g ‘ ndx ) , ( +g ‘ 𝑃 ) ⟩ , ⟨ ( .r ‘ ndx ) , ( .r ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Scalar ‘ ndx ) , 𝑆 ⟩ , ⟨ ( ·𝑠 ‘ ndx ) , ( ·𝑠 ‘ 𝑃 ) ⟩ , ⟨ ( ·𝑖 ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ ( 𝑆 Σg ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑓 ‘ 𝑥 ) ( ·𝑖 ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ) ) ⟩ } ) ∪ ( { ⟨ ( TopSet ‘ ndx ) , ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) ⟩ , ⟨ ( le ‘ ndx ) , ( le ‘ 𝑃 ) ⟩ , ⟨ ( dist ‘ ndx ) , ( dist ‘ 𝑃 ) ⟩ } ∪ { ⟨ ( Hom ‘ ndx ) , ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ⟩ , ⟨ ( comp ‘ ndx ) , ( 𝑎 ∈ ( 𝐵 × 𝐵 ) , 𝑐 ∈ 𝐵 ↦ ( 𝑑 ∈ ( ( 2nd ‘ 𝑎 ) ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) 𝑐 ) , 𝑒 ∈ ( ( 𝑓 ∈ 𝐵 , 𝑔 ∈ 𝐵 ↦ X 𝑥 ∈ 𝐼 ( ( 𝑓 ‘ 𝑥 ) ( Hom ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑔 ‘ 𝑥 ) ) ) ‘ 𝑎 ) ↦ ( 𝑥 ∈ 𝐼 ↦ ( ( 𝑑 ‘ 𝑥 ) ( ⟨ ( ( 1st ‘ 𝑎 ) ‘ 𝑥 ) , ( ( 2nd ‘ 𝑎 ) ‘ 𝑥 ) ⟩ ( comp ‘ ( 𝑅 ‘ 𝑥 ) ) ( 𝑐 ‘ 𝑥 ) ) ( 𝑒 ‘ 𝑥 ) ) ) ) ) ⟩ } ) )
31	23 6 24 25 30	prdsbaslem	⊢ ( 𝜑 → 𝑂 = ( ∏t ‘ ( TopOpen ∘ 𝑅 ) ) )