reheibor - Mathbox for Jeff Madsen

	Mathbox for Jeff Madsen		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > Mathboxes > reheibor		Structured version Visualization version GIF version

Theorem reheibor 39039

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 8521	. . . 4 ⊢ 1_o = {∅}
2		snfi 9109	. . . 4 ⊢ {∅} ∈ Fin
3	1, 2	eqeltri 2860	. . 3 ⊢ 1_o ∈ Fin
4		imassrn 6216	. . . . 5 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ⊆ ran (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
5		0ex 5267	. . . . . . . . . 10 ⊢ ∅ ∈ V
6		eqid 2763	. . . . . . . . . . 11 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) = ((abs ∘ − ) ↾ (ℝ × ℝ))
7		eqid 2763	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) = (𝑥 ∈ ℝ ↦ ({∅} × {𝑥}))
8	6, 7	ismrer1 39038	. . . . . . . . . 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 6919	. . . . . . . . . 10 ⊢ (ℝⁿ‘1_o) = (ℝⁿ‘{∅})
11	10	oveq2i 7462	. . . . . . . . 9 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘{∅}))
12	9, 11	eleqtrri 2863	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o))
13	6	rexmet 25165	. . . . . . . . 9 ⊢ ((abs ∘ − ) ↾ (ℝ × ℝ)) ∈ (∞Met‘ℝ)
14		eqid 2763	. . . . . . . . . . 11 ⊢ (ℝ ↑_m 1_o) = (ℝ ↑_m 1_o)
15	14	rrnmet 39029	. . . . . . . . . 10 ⊢ (1_o ∈ Fin → (ℝⁿ‘1_o) ∈ (Met‘(ℝ ↑_m 1_o)))
16		metxmet 24708	. . . . . . . . . 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 39001	. . . . . . . . 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⟶1-1onto(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 705	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶1-1onto(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 233	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶1-1onto(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 489	. . . . . 6 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶1-1onto(ℝ ↑_m 1_o)
22		f1of 6854	. . . . . 6 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶1-1onto(ℝ ↑_m 1_o) → (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})):ℝ⟶(ℝ ↑_m 1_o))
23		frn 6747	. . . . . 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 3922	. . . 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 2763	. . . 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 2763	. . . 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 2763	. . . 4 ⊢ (MetOpen‘(ℝⁿ‘1_o)) = (MetOpen‘(ℝⁿ‘1_o))
30	14, 27, 28, 29	rrnheibor 39037	. . 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 599	. 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 25146	. . . . . . . 8 ⊢ (abs ∘ − ) ∈ (∞Met‘ℂ)
34		id 23	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℝ)
35		ax-resscn 11296	. . . . . . . . 9 ⊢ ℝ ⊆ ℂ
36	34, 35	sstrdi 3925	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → 𝑌 ⊆ ℂ)
37		xmetres2 24735	. . . . . . . 8 ⊢ (((abs ∘ − ) ∈ (∞Met‘ℂ) ∧ 𝑌 ⊆ ℂ) → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
38	33, 36, 37	sylancr 599	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → ((abs ∘ − ) ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
39	32, 38	eqeltrid 2868	. . . . . 6 ⊢ (𝑌 ⊆ ℝ → 𝑀 ∈ (∞Met‘𝑌))
40		xmetres2 24735	. . . . . . 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 599	. . . . . 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 39005	. . . . . 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 596	. . . . 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 2763	. . . . . . . 8 ⊢ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) = ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)
49		eqid 2763	. . . . . . . 8 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌))
50	48, 49, 27	ismtyres 39008	. . . . . . 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 852	. . . . . 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 5673	. . . . . . . . . 10 ⊢ ((𝑌 ⊆ ℝ ∧ 𝑌 ⊆ ℝ) → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
53	52	anidms 577	. . . . . . . . 9 ⊢ (𝑌 ⊆ ℝ → (𝑌 × 𝑌) ⊆ (ℝ × ℝ))
54	53	resabs1d 6016	. . . . . . . 8 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = ((abs ∘ − ) ↾ (𝑌 × 𝑌)))
55	54, 32	eqtr4di 2816	. . . . . . 7 ⊢ (𝑌 ⊆ ℝ → (((abs ∘ − ) ↾ (ℝ × ℝ)) ↾ (𝑌 × 𝑌)) = 𝑀)
56	55	oveq1d 7466	. . . . . 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 2866	. . . . 5 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑀 Ismty ((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
58	44, 57	sseldd 3914	. . . 4 ⊢ (𝑌 ⊆ ℝ → ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ↾ 𝑌) ∈ (𝑇Homeo(MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌))))))
59		hmphi 24151	. . . 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 18	. . 3 ⊢ (𝑌 ⊆ ℝ → 𝑇 ≃ (MetOpen‘((ℝⁿ‘1_o) ↾ (((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) × ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌)))))
61		cmphmph 24162	. . . 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 24156	. . . . 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 24162	. . . . 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 18	. . . 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 215	. . 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 18	. 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 2763	. . . . . . . . 9 ⊢ (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ))) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
69	6, 68	tgioo 25170	. . . . . . . 8 ⊢ (topGen‘ran (,)) = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
70	67, 69	eqtri 2786	. . . . . . 7 ⊢ 𝑈 = (MetOpen‘((abs ∘ − ) ↾ (ℝ × ℝ)))
71	70, 29	ismtyhmeo 39005	. . . . . 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 705	. . . . 5 ⊢ (((abs ∘ − ) ↾ (ℝ × ℝ)) Ismty (ℝⁿ‘1_o)) ⊆ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
73	72, 12	sselii 3910	. . . 4 ⊢ (𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) ∈ (𝑈Homeo(MetOpen‘(ℝⁿ‘1_o)))
74		retopon 25137	. . . . . . 7 ⊢ (topGen‘ran (,)) ∈ (TopOn‘ℝ)
75	67, 74	eqeltri 2860	. . . . . 6 ⊢ 𝑈 ∈ (TopOn‘ℝ)
76	75	toponunii 23289	. . . . 5 ⊢ ℝ = ∪ 𝑈
77	76	hmeocld 24141	. . . 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 599	. . 3 ⊢ (𝑌 ⊆ ℝ → (𝑌 ∈ (Clsd‘𝑈) ↔ ((𝑥 ∈ ℝ ↦ ({∅} × {𝑥})) “ 𝑌) ∈ (Clsd‘(MetOpen‘(ℝⁿ‘1_o)))))
79		ismtybnd 39007	. . . 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 1399	. . 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 644	. 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 314	1 ⊢ (𝑌 ⊆ ℝ → (𝑇 ∈ Comp ↔ (𝑌 ∈ (Clsd‘𝑈) ∧ 𝑀 ∈ (Bnd‘𝑌))))

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ∀wral 3080 Vcvv 3454 ⊆ wss 3900 ∅c0 4281 {csn 4588 class class class wbr 5108 ↦ cmpt 5192 × cxp 5656 ran crn 5659 ↾ cres 5660 “ cima 5661 ∘ ccom 5662 ⟶wf 6562 ⟶1-1ontowf1o 6565 ‘cfv 6566 (class class class)co 7451 1_oc1o 8507 ↑_m cmap 8885 Fincfn 9011 ℂcc 11237 ℝcr 11238 − cmin 11580 (,)cioo 13516 abscabs 15444 topGenctg 17658 ∞Metcxmet 21714 Metcmet 21715 MetOpencmopn 21719 TopOnctopon 23283 Clsdccld 23389 Compccmp 23759 Homeochmeo 24127 ≃ chmph 24128 Bndcbnd 38967 Ismty cismty 38998 ℝⁿcrrn 39025

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-inf2 9679 ax-cc 10552 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 ax-pre-sup 11317

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-iin 4959 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-se 5612 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-isom 6575 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-1st 8035 df-2nd 8036 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-2o 8515 df-oadd 8518 df-omul 8519 df-er 8755 df-ec 8757 df-map 8887 df-pm 8888 df-ixp 8964 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-fi 9440 df-sup 9471 df-inf 9472 df-oi 9541 df-card 10057 df-acn 10060 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-uz 13006 df-q 13116 df-rp 13161 df-xneg 13281 df-xadd 13282 df-xmul 13283 df-ioo 13520 df-ico 13522 df-icc 13523 df-fz 13680 df-fzo 13829 df-fl 13972 df-seq 14185 df-exp 14245 df-hash 14516 df-cj 15309 df-re 15310 df-im 15311 df-sqrt 15445 df-abs 15446 df-limsup 15682 df-clim 15699 df-rlim 15700 df-sum 15898 df-gz 17152 df-struct 17369 df-sets 17386 df-slot 17404 df-ndx 17416 df-base 17432 df-ress 17453 df-plusg 17486 df-mulr 17487 df-starv 17488 df-sca 17489 df-vsca 17490 df-ip 17491 df-tset 17492 df-ple 17493 df-ds 17495 df-unif 17496 df-hom 17497 df-cco 17498 df-euf 17499 df-rest 17643 df-topn 17644 df-topgen 17664 df-prds 17668 df-pws 17670 df-psmet 21721 df-xmet 21722 df-met 21723 df-bl 21724 df-mopn 21725 df-fbas 21726 df-fg 21727 df-cnfld 21730 df-top 23267 df-topon 23284 df-topsp 23306 df-bases 23319 df-cld 23392 df-ntr 23393 df-cls 23394 df-nei 23471 df-cn 23600 df-lm 23602 df-haus 23688 df-cmp 23760 df-hmeo 24129 df-hmph 24130 df-fil 24220 df-fm 24312 df-flim 24313 df-flf 24314 df-xms 24694 df-ms 24695 df-cfil 25631 df-cau 25632 df-cmet 25633 df-totbnd 38968 df-bnd 38979 df-ismty 38999 df-rrn 39026

This theorem is used by: icccmpALT 39041

W3C validator