reheibor - Mathbox for Jeff Madsen

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Theorem reheibor 37806

Description: Heine-Borel theorem for real numbers. A subset of ℝ is compact iff it is closed and bounded. (Contributed by Jeff Madsen, 2-Sep-2009.) (Revised by Mario Carneiro, 22-Sep-2015.)

**Hypotheses**
Ref	Expression
reheibor.2	⊢ 𝑀 = ((abs ∘ − ) ↾ (𝑌 × 𝑌))
reheibor.3	⊢ 𝑇 = (MetOpen‘𝑀)
reheibor.4	⊢ 𝑈 = (topGen‘ran (,))

**Assertion**
Ref	Expression
reheibor	⊢ (𝑌 ⊆ ℝ → (𝑇 ∈ Comp ↔ (𝑌 ∈ (Clsd‘𝑈) ∧ 𝑀 ∈ (Bnd‘𝑌))))

Proof of Theorem reheibor Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df1o2 8418	. . . 4 ⊢ 1_o = {∅}
2		snfi 8991	. . . 4 ⊢ {∅} ∈ Fin
3	1, 2	eqeltri 2824	. . 3 ⊢ 1_o ∈ Fin
4		imassrn 6031	. . . . 5 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ ran (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
5		0ex 5257	. . . . . . . . . 10 ⊢ ∅ ∈ V
6		eqid 2729	. . . . . . . . . . 11 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) = ((abs ∘ − ) ↾ (ℝ × ℝ))
7		eqid 2729	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) = (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
8	6, 7	ismrer1 37805	. . . . . . . . . 10 ⊢ (∅ ∈ V → (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘{∅})))
9	5, 8	ax-mp 5	. . . . . . . . 9 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘{∅}))
10	1	fveq2i 6843	. . . . . . . . . 10 ⊢ (ℝⁿ‘1_o) = (ℝⁿ‘{∅})
11	10	oveq2i 7380	. . . . . . . . 9 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘{∅}))
12	9, 11	eleqtrri 2827	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o))
13	6	rexmet 24655	. . . . . . . . 9 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ)
14		eqid 2729	. . . . . . . . . . 11 ⊢ (ℝ ↑_m 1_o) = (ℝ ↑_m 1_o)
15	14	rrnmet 37796	. . . . . . . . . 10 ⊢ (1_o ∈ Fin → (ℝⁿ‘1_o) ∈ (Met‘(ℝ ↑_m 1_o)))
16		metxmet 24198	. . . . . . . . . 10 ⊢ ((ℝⁿ‘1_o) ∈ (Met‘(ℝ ↑_m 1_o)) → (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o)))
17	3, 15, 16	mp2b 10	. . . . . . . . 9 ⊢ (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o))
18		isismty 37768	. . . . . . . . 9 ⊢ ((((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ) ∧ (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o))) → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o) ∧ ∀𝑦 ∈ ℝ ∀𝑧 ∈ ℝ (𝑦((abs ∘ − ) ↾ (ℝ × ℝ))𝑧) = (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑦)(ℝⁿ‘1_o)((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑧)))))
19	13, 17, 18	mp2an 692	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o) ∧ ∀𝑦 ∈ ℝ ∀𝑧 ∈ ℝ (𝑦((abs ∘ − ) ↾ (ℝ × ℝ))𝑧) = (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑦)(ℝⁿ‘1_o)((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑧))))
20	12, 19	mpbi 230	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o) ∧ ∀𝑦 ∈ ℝ ∀𝑧 ∈ ℝ (𝑦((abs ∘ − ) ↾ (ℝ × ℝ))𝑧) = (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑦)(ℝⁿ‘1_o)((𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))‘𝑧)))
21	20	simpli 483	. . . . . 6 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o)
22		f1of 6782	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o) → (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶(ℝ ↑_m 1_o))
23		frn 6677	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶(ℝ ↑_m 1_o) → ran (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ⊆ (ℝ ↑_m 1_o))
24	21, 22, 23	mp2b 10	. . . . 5 ⊢ ran (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ⊆ (ℝ ↑_m 1_o)
25	4, 24	sstri 3953	. . . 4 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ (ℝ ↑_m 1_o)
26	25	a1i 11	. . 3 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ (ℝ ↑_m 1_o))
27		eqid 2729	. . . 4 ⊢ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) = ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))
28		eqid 2729	. . . 4 ⊢ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) = (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))
29		eqid 2729	. . . 4 ⊢ (MetOpen‘(ℝⁿ‘1_o)) = (MetOpen‘(ℝⁿ‘1_o))
30	14, 27, 28, 29	rrnheibor 37804	. . 3 ⊢ ((1_o ∈ Fin ∧ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ (ℝ ↑_m 1_o)) → ((MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp ↔ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o))) ∧ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (Bnd‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
31	3, 26, 30	sylancr 587	. 2 ⊢ (𝑌 ⊆ ℝ → ((MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp ↔ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o))) ∧ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (Bnd‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
32		reheibor.2	. . . . . . 7 ⊢ 𝑀 = ((abs ∘ − ) ↾ (𝑌 × 𝑌))
33		cnxmet 24636	. . . . . . . 8 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
34		id 22	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℝ)
35		ax-resscn 11101	. . . . . . . . 9 ⊢ ℝ ⊆ ℂ
36	34, 35	sstrdi 3956	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℂ)
37		xmetres2 24225	. . . . . . . 8 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑌 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
38	33, 36, 37	sylancr 587	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
39	32, 38	eqeltrid 2832	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → 𝑀 ∈ (∞Met‘𝑌))
40		xmetres2 24225	. . . . . . 7 ⊢ (((ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o)) ∧ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ (ℝ ↑_m 1_o)) → ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (∞Met‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))
41	17, 26, 40	sylancr 587	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (∞Met‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))
42		reheibor.3	. . . . . . 7 ⊢ 𝑇 = (MetOpen‘𝑀)
43	42, 28	ismtyhmeo 37772	. . . . . 6 ⊢ ((𝑀 ∈ (∞Met‘𝑌) ∧ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (∞Met‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) → (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ⊆ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))))
44	39, 41, 43	syl2anc 584	. . . . 5 ⊢ (𝑌 ⊆ ℝ → (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ⊆ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))))
45	13	a1i 11	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → ((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ))
46	17	a1i 11	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o)))
47	12	a1i 11	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)))
48		eqid 2729	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) = ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)
49		eqid 2729	. . . . . . . 8 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌))
50	48, 49, 27	ismtyres 37775	. . . . . . 7 ⊢ (((((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ) ∧ (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o))) ∧ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ∧ 𝑌 ⊆ ℝ)) → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ ((((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
51	45, 46, 47, 34, 50	syl22anc 838	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ ((((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
52		xpss12 5646	. . . . . . . . . 10 ⊢ ((𝑌 ⊆ ℝ ∧ 𝑌 ⊆ ℝ) → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
53	52	anidms 566	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
54	53	resabs1d 5968	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = ((abs ∘ − ) ↾ (𝑌 × 𝑌)))
55	54, 32	eqtr4di 2782	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = 𝑀)
56	55	oveq1d 7384	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → ((((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) = (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
57	51, 56	eleqtrd 2830	. . . . 5 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
58	44, 57	sseldd 3944	. . . 4 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))))
59		hmphi 23640	. . . 4 ⊢ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))) → 𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
60	58, 59	syl 17	. . 3 ⊢ (𝑌 ⊆ ℝ → 𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
61		cmphmph 23651	. . . 4 ⊢ (𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) → (𝑇 ∈ Comp → (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp))
62		hmphsym 23645	. . . . 5 ⊢ (𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) → (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ≃ 𝑇)
63		cmphmph 23651	. . . . 5 ⊢ ((MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ≃ 𝑇 → ((MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp → 𝑇 ∈ Comp))
64	62, 63	syl 17	. . . 4 ⊢ (𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) → ((MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp → 𝑇 ∈ Comp))
65	61, 64	impbid 212	. . 3 ⊢ (𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) → (𝑇 ∈ Comp ↔ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp))
66	60, 65	syl 17	. 2 ⊢ (𝑌 ⊆ ℝ → (𝑇 ∈ Comp ↔ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))) ∈ Comp))
67		reheibor.4	. . . . . . . 8 ⊢ 𝑈 = (topGen‘ran (,))
68		eqid 2729	. . . . . . . . 9 ⊢ (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ))) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
69	6, 68	tgioo 24660	. . . . . . . 8 ⊢ (topGen‘ran (,)) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
70	67, 69	eqtri 2752	. . . . . . 7 ⊢ 𝑈 = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
71	70, 29	ismtyhmeo 37772	. . . . . 6 ⊢ ((((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ) ∧ (ℝⁿ‘1_o) ∈ (∞Met‘(ℝ ↑_m 1_o))) → (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ⊆ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o))))
72	13, 17, 71	mp2an 692	. . . . 5 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ⊆ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
73	72, 12	sselii 3940	. . . 4 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
74		retopon 24627	. . . . . . 7 ⊢ (topGen‘ran (,)) ∈ (TopOn‘ℝ)
75	67, 74	eqeltri 2824	. . . . . 6 ⊢ 𝑈 ∈ (TopOn‘ℝ)
76	75	toponunii 22779	. . . . 5 ⊢ ℝ = ∪ 𝑈
77	76	hmeocld 23630	. . . 4 ⊢ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o))) ∧ 𝑌 ⊆ ℝ) → (𝑌 ∈ (Clsd‘𝑈) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o)))))
78	73, 34, 77	sylancr 587	. . 3 ⊢ (𝑌 ⊆ ℝ → (𝑌 ∈ (Clsd‘𝑈) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o)))))
79		ismtybnd 37774	. . . 4 ⊢ ((𝑀 ∈ (∞Met‘𝑌) ∧ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (∞Met‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)) ∧ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))) → (𝑀 ∈ (Bnd‘𝑌) ↔ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (Bnd‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))
80	39, 41, 57, 79	syl3anc 1373	. . 3 ⊢ (𝑌 ⊆ ℝ → (𝑀 ∈ (Bnd‘𝑌) ↔ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (Bnd‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))
81	78, 80	anbi12d 632	. 2 ⊢ (𝑌 ⊆ ℝ → ((𝑌 ∈ (Clsd‘𝑈) ∧ 𝑀 ∈ (Bnd‘𝑌)) ↔ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o))) ∧ ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))) ∈ (Bnd‘((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
82	31, 66, 81	3bitr4d 311	1 ⊢ (𝑌 ⊆ ℝ → (𝑇 ∈ Comp ↔ (𝑌 ∈ (Clsd‘𝑈) ∧ 𝑀 ∈ (Bnd‘𝑌))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∀wral 3044 Vcvv 3444 ⊆ wss 3911 ∅c0 4292 {csn 4585 class class class wbr 5102 ↦ cmpt 5183 × cxp 5629 ran crn 5632 ↾ cres 5633 “ cima 5634 ∘ ccom 5635 ⟶wf 6495 –1-1-onto→wf1o 6498 ‘cfv 6499 (class class class)co 7369 1_oc1o 8404 ↑_m cmap 8776 Fincfn 8895 ℂcc 11042 ℝcr 11043 − cmin 11381 (,)cioo 13282 abscabs 15176 topGenctg 17376 ∞Metcxmet 21225 Metcmet 21226 MetOpencmopn 21230 TopOnctopon 22773 Clsdccld 22879 Compccmp 23249 Homeochmeo 23616 ≃ chmph 23617 Bndcbnd 37734 Ismty cismty 37765 ℝⁿcrrn 37792

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-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-inf2 9570 ax-cc 10364 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 ax-pre-sup 11122

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4868 df-int 4907 df-iun 4953 df-iin 4954 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-isom 6508 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-1st 7947 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-2o 8412 df-oadd 8415 df-omul 8416 df-er 8648 df-ec 8650 df-map 8778 df-pm 8779 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fi 9338 df-sup 9369 df-inf 9370 df-oi 9439 df-card 9868 df-acn 9871 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-div 11812 df-nn 12163 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 df-7 12230 df-8 12231 df-9 12232 df-n0 12419 df-z 12506 df-dec 12626 df-uz 12770 df-q 12884 df-rp 12928 df-xneg 13048 df-xadd 13049 df-xmul 13050 df-ioo 13286 df-ico 13288 df-icc 13289 df-fz 13445 df-fzo 13592 df-fl 13730 df-seq 13943 df-exp 14003 df-hash 14272 df-cj 15041 df-re 15042 df-im 15043 df-sqrt 15177 df-abs 15178 df-limsup 15413 df-clim 15430 df-rlim 15431 df-sum 15629 df-gz 16877 df-struct 17093 df-sets 17110 df-slot 17128 df-ndx 17140 df-base 17156 df-ress 17177 df-plusg 17209 df-mulr 17210 df-starv 17211 df-sca 17212 df-vsca 17213 df-ip 17214 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-hom 17220 df-cco 17221 df-rest 17361 df-topn 17362 df-topgen 17382 df-prds 17386 df-pws 17388 df-psmet 21232 df-xmet 21233 df-met 21234 df-bl 21235 df-mopn 21236 df-fbas 21237 df-fg 21238 df-cnfld 21241 df-top 22757 df-topon 22774 df-topsp 22796 df-bases 22809 df-cld 22882 df-ntr 22883 df-cls 22884 df-nei 22961 df-cn 23090 df-lm 23092 df-haus 23178 df-cmp 23250 df-hmeo 23618 df-hmph 23619 df-fil 23709 df-fm 23801 df-flim 23802 df-flf 23803 df-xms 24184 df-ms 24185 df-cfil 25131 df-cau 25132 df-cmet 25133 df-totbnd 37735 df-bnd 37746 df-ismty 37766 df-rrn 37793

This theorem is referenced by: icccmpALT 37808

W3C validator