reheibor - Mathbox for Jeff Madsen

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Theorem reheibor 38206

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 8402	. . . 4 ⊢ 1_o = {∅}
2		snfi 8980	. . . 4 ⊢ {∅} ∈ Fin
3	1, 2	eqeltri 2835	. . 3 ⊢ 1_o ∈ Fin
4		imassrn 6023	. . . . 5 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ ran (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
5		0ex 5229	. . . . . . . . . 10 ⊢ ∅ ∈ V
6		eqid 2739	. . . . . . . . . . 11 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) = ((abs ∘ − ) ↾ (ℝ × ℝ))
7		eqid 2739	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) = (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
8	6, 7	ismrer1 38205	. . . . . . . . . 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 6830	. . . . . . . . . 10 ⊢ (ℝⁿ‘1_o) = (ℝⁿ‘{∅})
11	10	oveq2i 7367	. . . . . . . . 9 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘{∅}))
12	9, 11	eleqtrri 2838	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o))
13	6	rexmet 24774	. . . . . . . . 9 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ)
14		eqid 2739	. . . . . . . . . . 11 ⊢ (ℝ ↑_m 1_o) = (ℝ ↑_m 1_o)
15	14	rrnmet 38196	. . . . . . . . . 10 ⊢ (1_o ∈ Fin → (ℝⁿ‘1_o) ∈ (Met‘(ℝ ↑_m 1_o)))
16		metxmet 24317	. . . . . . . . . 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 38168	. . . . . . . . 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 698	. . . . . . . 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 231	. . . . . . 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 484	. . . . . 6 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o)
22		f1of 6767	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ–1-1-onto→(ℝ ↑_m 1_o) → (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶(ℝ ↑_m 1_o))
23		frn 6662	. . . . . 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 3924	. . . 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 2739	. . . 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 2739	. . . 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 2739	. . . 4 ⊢ (MetOpen‘(ℝⁿ‘1_o)) = (MetOpen‘(ℝⁿ‘1_o))
30	14, 27, 28, 29	rrnheibor 38204	. . 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 593	. 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 24755	. . . . . . . 8 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
34		id 22	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℝ)
35		ax-resscn 11086	. . . . . . . . 9 ⊢ ℝ ⊆ ℂ
36	34, 35	sstrdi 3927	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℂ)
37		xmetres2 24344	. . . . . . . 8 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑌 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
38	33, 36, 37	sylancr 593	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
39	32, 38	eqeltrid 2843	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → 𝑀 ∈ (∞Met‘𝑌))
40		xmetres2 24344	. . . . . . 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 593	. . . . . 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 38172	. . . . . 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 590	. . . . 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 2739	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) = ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)
49		eqid 2739	. . . . . . . 8 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌))
50	48, 49, 27	ismtyres 38175	. . . . . . 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 844	. . . . . 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 5633	. . . . . . . . . 10 ⊢ ((𝑌 ⊆ ℝ ∧ 𝑌 ⊆ ℝ) → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
53	52	anidms 571	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
54	53	resabs1d 5960	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = ((abs ∘ − ) ↾ (𝑌 × 𝑌)))
55	54, 32	eqtr4di 2792	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = 𝑀)
56	55	oveq1d 7371	. . . . . 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 2841	. . . . 5 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
58	44, 57	sseldd 3916	. . . 4 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))))
59		hmphi 23760	. . . 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 23771	. . . 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 23765	. . . . 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 23771	. . . . 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 213	. . 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 2739	. . . . . . . . 9 ⊢ (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ))) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
69	6, 68	tgioo 24779	. . . . . . . 8 ⊢ (topGen‘ran (,)) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
70	67, 69	eqtri 2762	. . . . . . 7 ⊢ 𝑈 = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
71	70, 29	ismtyhmeo 38172	. . . . . 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 698	. . . . 5 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ⊆ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
73	72, 12	sselii 3912	. . . 4 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
74		retopon 24746	. . . . . . 7 ⊢ (topGen‘ran (,)) ∈ (TopOn‘ℝ)
75	67, 74	eqeltri 2835	. . . . . 6 ⊢ 𝑈 ∈ (TopOn‘ℝ)
76	75	toponunii 22899	. . . . 5 ⊢ ℝ = ∪ 𝑈
77	76	hmeocld 23750	. . . 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 593	. . 3 ⊢ (𝑌 ⊆ ℝ → (𝑌 ∈ (Clsd‘𝑈) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o)))))
79		ismtybnd 38174	. . . 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 1379	. . 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 638	. 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 312	1 ⊢ (𝑌 ⊆ ℝ → (𝑇 ∈ Comp ↔ (𝑌 ∈ (Clsd‘𝑈) ∧ 𝑀 ∈ (Bnd‘𝑌))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 207 ∧ wa 396 = wceq 1547 ∈ wcel 2119 ∀wral 3053 Vcvv 3431 ⊆ wss 3883 ∅c0 4261 {csn 4555 class class class wbr 5072 ↦ cmpt 5153 × cxp 5616 ran crn 5619 ↾ cres 5620 “ cima 5621 ∘ ccom 5622 ⟶wf 6481 –1-1-onto→wf1o 6484 ‘cfv 6485 (class class class)co 7356 1_oc1o 8388 ↑_m cmap 8763 Fincfn 8883 ℂcc 11027 ℝcr 11028 − cmin 11368 (,)cioo 13289 abscabs 15187 topGenctg 17391 ∞Metcxmet 21332 Metcmet 21333 MetOpencmopn 21337 TopOnctopon 22893 Clsdccld 22999 Compccmp 23369 Homeochmeo 23736 ≃ chmph 23737 Bndcbnd 38134 Ismty cismty 38165 ℝⁿcrrn 38192

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-inf2 9553 ax-cc 10348 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107

This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-iin 4924 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-se 5572 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-isom 6494 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-2o 8396 df-oadd 8399 df-omul 8400 df-er 8633 df-ec 8635 df-map 8765 df-pm 8766 df-ixp 8836 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fi 9314 df-sup 9345 df-inf 9346 df-oi 9415 df-card 9854 df-acn 9857 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-q 12890 df-rp 12934 df-xneg 13054 df-xadd 13055 df-xmul 13056 df-ioo 13293 df-ico 13295 df-icc 13296 df-fz 13453 df-fzo 13600 df-fl 13742 df-seq 13955 df-exp 14015 df-hash 14284 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-limsup 15424 df-clim 15441 df-rlim 15442 df-sum 15640 df-gz 16892 df-struct 17108 df-sets 17125 df-slot 17143 df-ndx 17155 df-base 17171 df-ress 17192 df-plusg 17224 df-mulr 17225 df-starv 17226 df-sca 17227 df-vsca 17228 df-ip 17229 df-tset 17230 df-ple 17231 df-ds 17233 df-unif 17234 df-hom 17235 df-cco 17236 df-rest 17376 df-topn 17377 df-topgen 17397 df-prds 17401 df-pws 17403 df-psmet 21339 df-xmet 21340 df-met 21341 df-bl 21342 df-mopn 21343 df-fbas 21344 df-fg 21345 df-cnfld 21348 df-top 22877 df-topon 22894 df-topsp 22916 df-bases 22929 df-cld 23002 df-ntr 23003 df-cls 23004 df-nei 23081 df-cn 23210 df-lm 23212 df-haus 23298 df-cmp 23370 df-hmeo 23738 df-hmph 23739 df-fil 23829 df-fm 23921 df-flim 23922 df-flf 23923 df-xms 24303 df-ms 24304 df-cfil 25240 df-cau 25241 df-cmet 25242 df-totbnd 38135 df-bnd 38146 df-ismty 38166 df-rrn 38193

This theorem is referenced by: icccmpALT 38208

W3C validator