Theorem isbnd3 33713

Description: A metric space is bounded iff the metric function maps to some bounded real interval. (Contributed by Mario Carneiro, 13-Sep-2015.)

Assertion

Ref	Expression
isbnd3	⊢ (𝑀 ∈ (Bnd‘𝑋) ↔ (𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))

Distinct variable groups:   𝑥,𝑀   𝑥,𝑋

Proof of Theorem isbnd3

Dummy variables 𝑟 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		bndmet 33710	. . 3 ⊢ (𝑀 ∈ (Bnd‘𝑋) → 𝑀 ∈ (Met‘𝑋))
2		0re 10078	. . . . . 6 ⊢ 0 ∈ ℝ
3	2	ne0ii 3956	. . . . 5 ⊢ ℝ ≠ ∅
4		metf 22182	. . . . . . . . . 10 ⊢ (𝑀 ∈ (Met‘𝑋) → 𝑀:(𝑋 × 𝑋)⟶ℝ)
5		ffn 6083	. . . . . . . . . 10 ⊢ (𝑀:(𝑋 × 𝑋)⟶ℝ → 𝑀 Fn (𝑋 × 𝑋))
6	4, 5	syl 17	. . . . . . . . 9 ⊢ (𝑀 ∈ (Met‘𝑋) → 𝑀 Fn (𝑋 × 𝑋))
7	1, 6	syl 17	. . . . . . . 8 ⊢ (𝑀 ∈ (Bnd‘𝑋) → 𝑀 Fn (𝑋 × 𝑋))
8	7	ad2antrr 762	. . . . . . 7 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → 𝑀 Fn (𝑋 × 𝑋))
9	1, 4	syl 17	. . . . . . . . . . . 12 ⊢ (𝑀 ∈ (Bnd‘𝑋) → 𝑀:(𝑋 × 𝑋)⟶ℝ)
10		fdm 6089	. . . . . . . . . . . 12 ⊢ (𝑀:(𝑋 × 𝑋)⟶ℝ → dom 𝑀 = (𝑋 × 𝑋))
11	9, 10	syl 17	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (Bnd‘𝑋) → dom 𝑀 = (𝑋 × 𝑋))
12		xpeq2 5163	. . . . . . . . . . . 12 ⊢ (𝑋 = ∅ → (𝑋 × 𝑋) = (𝑋 × ∅))
13		xp0 5587	. . . . . . . . . . . 12 ⊢ (𝑋 × ∅) = ∅
14	12, 13	syl6eq 2701	. . . . . . . . . . 11 ⊢ (𝑋 = ∅ → (𝑋 × 𝑋) = ∅)
15	11, 14	sylan9eq 2705	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → dom 𝑀 = ∅)
16	15	adantr 480	. . . . . . . . 9 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → dom 𝑀 = ∅)
17		dm0rn0 5374	. . . . . . . . 9 ⊢ (dom 𝑀 = ∅ ↔ ran 𝑀 = ∅)
18	16, 17	sylib 208	. . . . . . . 8 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → ran 𝑀 = ∅)
19		0ss 4005	. . . . . . . 8 ⊢ ∅ ⊆ (0[,]𝑥)
20	18, 19	syl6eqss 3688	. . . . . . 7 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → ran 𝑀 ⊆ (0[,]𝑥))
21		df-f 5930	. . . . . . 7 ⊢ (𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ↔ (𝑀 Fn (𝑋 × 𝑋) ∧ ran 𝑀 ⊆ (0[,]𝑥)))
22	8, 20, 21	sylanbrc 699	. . . . . 6 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
23	22	ralrimiva 2995	. . . . 5 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → ∀𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
24		r19.2z 4093	. . . . 5 ⊢ ((ℝ ≠ ∅ ∧ ∀𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
25	3, 23, 24	sylancr 696	. . . 4 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
26		isbnd2 33712	. . . . . 6 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 ≠ ∅) ↔ (𝑀 ∈ (∞Met‘𝑋) ∧ ∃𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟)))
27	26	simprbi 479	. . . . 5 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 ≠ ∅) → ∃𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
28		2re 11128	. . . . . . . . . . 11 ⊢ 2 ∈ ℝ
29		simprlr 820	. . . . . . . . . . . 12 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑟 ∈ ℝ+)
30	29	rpred 11910	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑟 ∈ ℝ)
31		remulcl 10059	. . . . . . . . . . 11 ⊢ ((2 ∈ ℝ ∧ 𝑟 ∈ ℝ) → (2 · 𝑟) ∈ ℝ)
32	28, 30, 31	sylancr 696	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → (2 · 𝑟) ∈ ℝ)
33	6	adantr 480	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑀 Fn (𝑋 × 𝑋))
34		simpll 805	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑀 ∈ (Met‘𝑋))
35		simprl 809	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑥 ∈ 𝑋)
36		simprr 811	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑧 ∈ 𝑋)
37		metcl 22184	. . . . . . . . . . . . . 14 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑥𝑀𝑧) ∈ ℝ)
38	34, 35, 36, 37	syl3anc 1366	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ∈ ℝ)
39		metge0 22197	. . . . . . . . . . . . . 14 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → 0 ≤ (𝑥𝑀𝑧))
40	34, 35, 36, 39	syl3anc 1366	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 0 ≤ (𝑥𝑀𝑧))
41	32	adantr 480	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (2 · 𝑟) ∈ ℝ)
42		simprll 819	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑦 ∈ 𝑋)
43	42	adantr 480	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑦 ∈ 𝑋)
44		metcl 22184	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → (𝑦𝑀𝑥) ∈ ℝ)
45	34, 43, 35, 44	syl3anc 1366	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑥) ∈ ℝ)
46		metcl 22184	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ ℝ)
47	34, 43, 36, 46	syl3anc 1366	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑧) ∈ ℝ)
48	45, 47	readdcld 10107	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)) ∈ ℝ)
49		mettri2 22193	. . . . . . . . . . . . . . . 16 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ (𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ≤ ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)))
50	34, 43, 35, 36, 49	syl13anc 1368	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ≤ ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)))
51	30	adantr 480	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑟 ∈ ℝ)
52		simplrr 818	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑋 = (𝑦(ball‘𝑀)𝑟))
53	35, 52	eleqtrd 2732	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑥 ∈ (𝑦(ball‘𝑀)𝑟))
54		metxmet 22186	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑀 ∈ (Met‘𝑋) → 𝑀 ∈ (∞Met‘𝑋))
55	34, 54	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑀 ∈ (∞Met‘𝑋))
56		rpxr 11878	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑟 ∈ ℝ+ → 𝑟 ∈ ℝ*)
57	56	ad2antlr 763	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟)) → 𝑟 ∈ ℝ*)
58	57	ad2antlr 763	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑟 ∈ ℝ*)
59		elbl2 22242	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (∞Met‘𝑋) ∧ 𝑟 ∈ ℝ*) ∧ (𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋)) → (𝑥 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑥) < 𝑟))
60	55, 58, 43, 35, 59	syl22anc 1367	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑥) < 𝑟))
61	53, 60	mpbid 222	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑥) < 𝑟)
62	36, 52	eleqtrd 2732	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑧 ∈ (𝑦(ball‘𝑀)𝑟))
63		elbl2 22242	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (∞Met‘𝑋) ∧ 𝑟 ∈ ℝ*) ∧ (𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑧 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑧) < 𝑟))
64	55, 58, 43, 36, 63	syl22anc 1367	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑧 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑧) < 𝑟))
65	62, 64	mpbid 222	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑧) < 𝑟)
66	45, 47, 51, 51, 61, 65	lt2addd 10688	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)) < (𝑟 + 𝑟))
67	51	recnd 10106	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑟 ∈ ℂ)
68	67	2timesd 11313	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (2 · 𝑟) = (𝑟 + 𝑟))
69	66, 68	breqtrrd 4713	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)) < (2 · 𝑟))
70	38, 48, 41, 50, 69	lelttrd 10233	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) < (2 · 𝑟))
71	38, 41, 70	ltled 10223	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ≤ (2 · 𝑟))
72		elicc2 12276	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ ℝ ∧ (2 · 𝑟) ∈ ℝ) → ((𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)) ↔ ((𝑥𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑥𝑀𝑧) ∧ (𝑥𝑀𝑧) ≤ (2 · 𝑟))))
73	2, 41, 72	sylancr 696	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)) ↔ ((𝑥𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑥𝑀𝑧) ∧ (𝑥𝑀𝑧) ≤ (2 · 𝑟))))
74	38, 40, 71, 73	mpbir3and 1264	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)))
75	74	ralrimivva 3000	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → ∀𝑥 ∈ 𝑋 ∀𝑧 ∈ 𝑋 (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)))
76		ffnov 6806	. . . . . . . . . . 11 ⊢ (𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟)) ↔ (𝑀 Fn (𝑋 × 𝑋) ∧ ∀𝑥 ∈ 𝑋 ∀𝑧 ∈ 𝑋 (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟))))
77	33, 75, 76	sylanbrc 699	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟)))
78		oveq2 6698	. . . . . . . . . . . 12 ⊢ (𝑥 = (2 · 𝑟) → (0[,]𝑥) = (0[,](2 · 𝑟)))
79	78	feq3d 6070	. . . . . . . . . . 11 ⊢ (𝑥 = (2 · 𝑟) → (𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ↔ 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟))))
80	79	rspcev 3340	. . . . . . . . . 10 ⊢ (((2 · 𝑟) ∈ ℝ ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟))) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
81	32, 77, 80	syl2anc 694	. . . . . . . . 9 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
82	81	expr 642	. . . . . . . 8 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ (𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+)) → (𝑋 = (𝑦(ball‘𝑀)𝑟) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
83	82	rexlimdvva 3067	. . . . . . 7 ⊢ (𝑀 ∈ (Met‘𝑋) → (∃𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
84	1, 83	syl 17	. . . . . 6 ⊢ (𝑀 ∈ (Bnd‘𝑋) → (∃𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
85	84	adantr 480	. . . . 5 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 ≠ ∅) → (∃𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
86	27, 85	mpd 15	. . . 4 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 ≠ ∅) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
87	25, 86	pm2.61dane 2910	. . 3 ⊢ (𝑀 ∈ (Bnd‘𝑋) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
88	1, 87	jca 553	. 2 ⊢ (𝑀 ∈ (Bnd‘𝑋) → (𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
89		simpll 805	. . . 4 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Met‘𝑋))
90		simpllr 815	. . . . . . 7 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑥 ∈ ℝ)
91	89	adantr 480	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑀 ∈ (Met‘𝑋))
92		simpr 476	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑦 ∈ 𝑋)
93		met0 22195	. . . . . . . . 9 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) = 0)
94	91, 92, 93	syl2anc 694	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) = 0)
95		simplr 807	. . . . . . . . . . 11 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
96	95, 92, 92	fovrnd 6848	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) ∈ (0[,]𝑥))
97		elicc2 12276	. . . . . . . . . . 11 ⊢ ((0 ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((𝑦𝑀𝑦) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑦) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑦) ∧ (𝑦𝑀𝑦) ≤ 𝑥)))
98	2, 90, 97	sylancr 696	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ((𝑦𝑀𝑦) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑦) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑦) ∧ (𝑦𝑀𝑦) ≤ 𝑥)))
99	96, 98	mpbid 222	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ((𝑦𝑀𝑦) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑦) ∧ (𝑦𝑀𝑦) ≤ 𝑥))
100	99	simp3d 1095	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) ≤ 𝑥)
101	94, 100	eqbrtrrd 4709	. . . . . . 7 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 0 ≤ 𝑥)
102	90, 101	ge0p1rpd 11940	. . . . . 6 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ+)
103		fovrn 6846	. . . . . . . . . . . . . 14 ⊢ ((𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ∧ 𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
104	103	3expa 1284	. . . . . . . . . . . . 13 ⊢ (((𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
105	104	adantlll 754	. . . . . . . . . . . 12 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
106		elicc2 12276	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((𝑦𝑀𝑧) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥)))
107	2, 90, 106	sylancr 696	. . . . . . . . . . . . 13 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ((𝑦𝑀𝑧) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥)))
108	107	adantr 480	. . . . . . . . . . . 12 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → ((𝑦𝑀𝑧) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥)))
109	105, 108	mpbid 222	. . . . . . . . . . 11 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥))
110	109	simp1d 1093	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ ℝ)
111	90	adantr 480	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → 𝑥 ∈ ℝ)
112		peano2re 10247	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℝ → (𝑥 + 1) ∈ ℝ)
113	90, 112	syl 17	. . . . . . . . . . 11 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ)
114	113	adantr 480	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ)
115	109	simp3d 1095	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ≤ 𝑥)
116	111	ltp1d 10992	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → 𝑥 < (𝑥 + 1))
117	110, 111, 114, 115, 116	lelttrd 10233	. . . . . . . . 9 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) < (𝑥 + 1))
118	117	ralrimiva 2995	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ∀𝑧 ∈ 𝑋 (𝑦𝑀𝑧) < (𝑥 + 1))
119		rabid2 3148	. . . . . . . 8 ⊢ (𝑋 = {𝑧 ∈ 𝑋 ∣ (𝑦𝑀𝑧) < (𝑥 + 1)} ↔ ∀𝑧 ∈ 𝑋 (𝑦𝑀𝑧) < (𝑥 + 1))
120	118, 119	sylibr 224	. . . . . . 7 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑋 = {𝑧 ∈ 𝑋 ∣ (𝑦𝑀𝑧) < (𝑥 + 1)})
121	91, 54	syl 17	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑀 ∈ (∞Met‘𝑋))
122	113	rexrd 10127	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ*)
123		blval 22238	. . . . . . . 8 ⊢ ((𝑀 ∈ (∞Met‘𝑋) ∧ 𝑦 ∈ 𝑋 ∧ (𝑥 + 1) ∈ ℝ*) → (𝑦(ball‘𝑀)(𝑥 + 1)) = {𝑧 ∈ 𝑋 ∣ (𝑦𝑀𝑧) < (𝑥 + 1)})
124	121, 92, 122, 123	syl3anc 1366	. . . . . . 7 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦(ball‘𝑀)(𝑥 + 1)) = {𝑧 ∈ 𝑋 ∣ (𝑦𝑀𝑧) < (𝑥 + 1)})
125	120, 124	eqtr4d 2688	. . . . . 6 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1)))
126		oveq2 6698	. . . . . . . 8 ⊢ (𝑟 = (𝑥 + 1) → (𝑦(ball‘𝑀)𝑟) = (𝑦(ball‘𝑀)(𝑥 + 1)))
127	126	eqeq2d 2661	. . . . . . 7 ⊢ (𝑟 = (𝑥 + 1) → (𝑋 = (𝑦(ball‘𝑀)𝑟) ↔ 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1))))
128	127	rspcev 3340	. . . . . 6 ⊢ (((𝑥 + 1) ∈ ℝ+ ∧ 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1))) → ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
129	102, 125, 128	syl2anc 694	. . . . 5 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
130	129	ralrimiva 2995	. . . 4 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → ∀𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
131		isbnd 33709	. . . 4 ⊢ (𝑀 ∈ (Bnd‘𝑋) ↔ (𝑀 ∈ (Met‘𝑋) ∧ ∀𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟)))
132	89, 130, 131	sylanbrc 699	. . 3 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Bnd‘𝑋))
133	132	r19.29an 3106	. 2 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Bnd‘𝑋))
134	88, 133	impbii 199	1 ⊢ (𝑀 ∈ (Bnd‘𝑋) ↔ (𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 383   ∧ w3a 1054   = wceq 1523   ∈ wcel 2030   ≠ wne 2823  ∀wral 2941  ∃wrex 2942  {crab 2945   ⊆ wss 3607  ∅c0 3948   class class class wbr 4685   × cxp 5141  dom cdm 5143  ran crn 5144   Fn wfn 5921  ⟶wf 5922  ‘cfv 5926  (class class class)co 6690  ℝcr 9973  0cc0 9974  1c1 9975   + caddc 9977   · cmul 9979  ℝ^*cxr 10111   < clt 10112   ≤ cle 10113  2c2 11108  ℝ⁺crp 11870  [,]cicc 12216  ∞Metcxmt 19779  Metcme 19780  ballcbl 19781  Bndcbnd 33696

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1762  ax-4 1777  ax-5 1879  ax-6 1945  ax-7 1981  ax-8 2032  ax-9 2039  ax-10 2059  ax-11 2074  ax-12 2087  ax-13 2282  ax-ext 2631  ax-sep 4814  ax-nul 4822  ax-pow 4873  ax-pr 4936  ax-un 6991  ax-cnex 10030  ax-resscn 10031  ax-1cn 10032  ax-icn 10033  ax-addcl 10034  ax-addrcl 10035  ax-mulcl 10036  ax-mulrcl 10037  ax-mulcom 10038  ax-addass 10039  ax-mulass 10040  ax-distr 10041  ax-i2m1 10042  ax-1ne0 10043  ax-1rid 10044  ax-rnegex 10045  ax-rrecex 10046  ax-cnre 10047  ax-pre-lttri 10048  ax-pre-lttrn 10049  ax-pre-ltadd 10050  ax-pre-mulgt0 10051

This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1055  df-3an 1056  df-tru 1526  df-ex 1745  df-nf 1750  df-sb 1938  df-eu 2502  df-mo 2503  df-clab 2638  df-cleq 2644  df-clel 2647  df-nfc 2782  df-ne 2824  df-nel 2927  df-ral 2946  df-rex 2947  df-reu 2948  df-rmo 2949  df-rab 2950  df-v 3233  df-sbc 3469  df-csb 3567  df-dif 3610  df-un 3612  df-in 3614  df-ss 3621  df-nul 3949  df-if 4120  df-pw 4193  df-sn 4211  df-pr 4213  df-op 4217  df-uni 4469  df-iun 4554  df-br 4686  df-opab 4746  df-mpt 4763  df-id 5053  df-po 5064  df-so 5065  df-xp 5149  df-rel 5150  df-cnv 5151  df-co 5152  df-dm 5153  df-rn 5154  df-res 5155  df-ima 5156  df-iota 5889  df-fun 5928  df-fn 5929  df-f 5930  df-f1 5931  df-fo 5932  df-f1o 5933  df-fv 5934  df-riota 6651  df-ov 6693  df-oprab 6694  df-mpt2 6695  df-1st 7210  df-2nd 7211  df-er 7787  df-ec 7789  df-map 7901  df-en 7998  df-dom 7999  df-sdom 8000  df-pnf 10114  df-mnf 10115  df-xr 10116  df-ltxr 10117  df-le 10118  df-sub 10306  df-neg 10307  df-div 10723  df-2 11117  df-rp 11871  df-xneg 11984  df-xadd 11985  df-xmul 11986  df-icc 12220  df-psmet 19786  df-xmet 19787  df-met 19788  df-bl 19789  df-bnd 33708

This theorem is referenced by:  isbnd3b  33714  prdsbnd  33722