Theorem isbnd3 32753

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 32750	. . 3 ⊢ (𝑀 ∈ (Bnd‘𝑋) → 𝑀 ∈ (Met‘𝑋))
2		0re 9919	. . . . . 6 ⊢ 0 ∈ ℝ
3	2	ne0ii 3882	. . . . 5 ⊢ ℝ ≠ ∅
4		metf 21945	. . . . . . . . . 10 ⊢ (𝑀 ∈ (Met‘𝑋) → 𝑀:(𝑋 × 𝑋)⟶ℝ)
5		ffn 5958	. . . . . . . . . 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 758	. . . . . . 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 5964	. . . . . . . . . . . 12 ⊢ (𝑀:(𝑋 × 𝑋)⟶ℝ → dom 𝑀 = (𝑋 × 𝑋))
11	9, 10	syl 17	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (Bnd‘𝑋) → dom 𝑀 = (𝑋 × 𝑋))
12		xpeq2 5053	. . . . . . . . . . . 12 ⊢ (𝑋 = ∅ → (𝑋 × 𝑋) = (𝑋 × ∅))
13		xp0 5471	. . . . . . . . . . . 12 ⊢ (𝑋 × ∅) = ∅
14	12, 13	syl6eq 2660	. . . . . . . . . . 11 ⊢ (𝑋 = ∅ → (𝑋 × 𝑋) = ∅)
15	11, 14	sylan9eq 2664	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → dom 𝑀 = ∅)
16	15	adantr 480	. . . . . . . . 9 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → dom 𝑀 = ∅)
17		dm0rn0 5263	. . . . . . . . 9 ⊢ (dom 𝑀 = ∅ ↔ ran 𝑀 = ∅)
18	16, 17	sylib 207	. . . . . . . 8 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → ran 𝑀 = ∅)
19		0ss 3924	. . . . . . . 8 ⊢ ∅ ⊆ (0[,]𝑥)
20	18, 19	syl6eqss 3618	. . . . . . 7 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → ran 𝑀 ⊆ (0[,]𝑥))
21		df-f 5808	. . . . . . 7 ⊢ (𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ↔ (𝑀 Fn (𝑋 × 𝑋) ∧ ran 𝑀 ⊆ (0[,]𝑥)))
22	8, 20, 21	sylanbrc 695	. . . . . 6 ⊢ (((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) ∧ 𝑥 ∈ ℝ) → 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
23	22	ralrimiva 2949	. . . . 5 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → ∀𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
24		r19.2z 4012	. . . . 5 ⊢ ((ℝ ≠ ∅ ∧ ∀𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
25	3, 23, 24	sylancr 694	. . . 4 ⊢ ((𝑀 ∈ (Bnd‘𝑋) ∧ 𝑋 = ∅) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
26		isbnd2 32752	. . . . . 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 10967	. . . . . . . . . . 11 ⊢ 2 ∈ ℝ
29		simprlr 799	. . . . . . . . . . . 12 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑟 ∈ ℝ+)
30	29	rpred 11748	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑟 ∈ ℝ)
31		remulcl 9900	. . . . . . . . . . 11 ⊢ ((2 ∈ ℝ ∧ 𝑟 ∈ ℝ) → (2 · 𝑟) ∈ ℝ)
32	28, 30, 31	sylancr 694	. . . . . . . . . 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 786	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑀 ∈ (Met‘𝑋))
35		simprl 790	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑥 ∈ 𝑋)
36		simprr 792	. . . . . . . . . . . . . 14 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑧 ∈ 𝑋)
37		metcl 21947	. . . . . . . . . . . . . 14 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑥𝑀𝑧) ∈ ℝ)
38	34, 35, 36, 37	syl3anc 1318	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ∈ ℝ)
39		metge0 21960	. . . . . . . . . . . . . 14 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → 0 ≤ (𝑥𝑀𝑧))
40	34, 35, 36, 39	syl3anc 1318	. . . . . . . . . . . . 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 798	. . . . . . . . . . . . . . . . . 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 21947	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → (𝑦𝑀𝑥) ∈ ℝ)
45	34, 43, 35, 44	syl3anc 1318	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑥) ∈ ℝ)
46		metcl 21947	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ ℝ)
47	34, 43, 36, 46	syl3anc 1318	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑧) ∈ ℝ)
48	45, 47	readdcld 9948	. . . . . . . . . . . . . . 15 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)) ∈ ℝ)
49		mettri2 21956	. . . . . . . . . . . . . . . 16 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ (𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ≤ ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)))
50	34, 43, 35, 36, 49	syl13anc 1320	. . . . . . . . . . . . . . 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 797	. . . . . . . . . . . . . . . . . . 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 2690	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑥 ∈ (𝑦(ball‘𝑀)𝑟))
54		metxmet 21949	. . . . . . . . . . . . . . . . . . . 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 11716	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑟 ∈ ℝ+ → 𝑟 ∈ ℝ*)
57	56	ad2antlr 759	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟)) → 𝑟 ∈ ℝ*)
58	57	ad2antlr 759	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑟 ∈ ℝ*)
59		elbl2 22005	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (∞Met‘𝑋) ∧ 𝑟 ∈ ℝ*) ∧ (𝑦 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋)) → (𝑥 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑥) < 𝑟))
60	55, 58, 43, 35, 59	syl22anc 1319	. . . . . . . . . . . . . . . . . 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 221	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑦𝑀𝑥) < 𝑟)
62	36, 52	eleqtrd 2690	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑧 ∈ (𝑦(ball‘𝑀)𝑟))
63		elbl2 22005	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑀 ∈ (∞Met‘𝑋) ∧ 𝑟 ∈ ℝ*) ∧ (𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑧 ∈ (𝑦(ball‘𝑀)𝑟) ↔ (𝑦𝑀𝑧) < 𝑟))
64	55, 58, 43, 36, 63	syl22anc 1319	. . . . . . . . . . . . . . . . . 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 221	. . . . . . . . . . . . . . . . 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 10529	. . . . . . . . . . . . . . . 16 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → ((𝑦𝑀𝑥) + (𝑦𝑀𝑧)) < (𝑟 + 𝑟))
67	51	recnd 9947	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → 𝑟 ∈ ℂ)
68	67	2timesd 11152	. . . . . . . . . . . . . . . 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 4611	. . . . . . . . . . . . . . 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 10074	. . . . . . . . . . . . . 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 10064	. . . . . . . . . . . . 13 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ≤ (2 · 𝑟))
72		elicc2 12109	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ ℝ ∧ (2 · 𝑟) ∈ ℝ) → ((𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)) ↔ ((𝑥𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑥𝑀𝑧) ∧ (𝑥𝑀𝑧) ≤ (2 · 𝑟))))
73	2, 41, 72	sylancr 694	. . . . . . . . . . . . 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 1238	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋)) → (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)))
75	74	ralrimivva 2954	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → ∀𝑥 ∈ 𝑋 ∀𝑧 ∈ 𝑋 (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟)))
76		ffnov 6662	. . . . . . . . . . 11 ⊢ (𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟)) ↔ (𝑀 Fn (𝑋 × 𝑋) ∧ ∀𝑥 ∈ 𝑋 ∀𝑧 ∈ 𝑋 (𝑥𝑀𝑧) ∈ (0[,](2 · 𝑟))))
77	33, 75, 76	sylanbrc 695	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟)))
78		oveq2 6557	. . . . . . . . . . . 12 ⊢ (𝑥 = (2 · 𝑟) → (0[,]𝑥) = (0[,](2 · 𝑟)))
79	78	feq3d 5945	. . . . . . . . . . 11 ⊢ (𝑥 = (2 · 𝑟) → (𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ↔ 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟))))
80	79	rspcev 3282	. . . . . . . . . 10 ⊢ (((2 · 𝑟) ∈ ℝ ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,](2 · 𝑟))) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
81	32, 77, 80	syl2anc 691	. . . . . . . . 9 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ((𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+) ∧ 𝑋 = (𝑦(ball‘𝑀)𝑟))) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
82	81	expr 641	. . . . . . . 8 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ (𝑦 ∈ 𝑋 ∧ 𝑟 ∈ ℝ+)) → (𝑋 = (𝑦(ball‘𝑀)𝑟) → ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))
83	82	rexlimdvva 3020	. . . . . . 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 2869	. . 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 786	. . . 4 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Met‘𝑋))
90		simpllr 795	. . . . . . 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 21958	. . . . . . . . 9 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) = 0)
94	91, 92, 93	syl2anc 691	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) = 0)
95		simplr 788	. . . . . . . . . . 11 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥))
96	95, 92, 92	fovrnd 6704	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) ∈ (0[,]𝑥))
97		elicc2 12109	. . . . . . . . . . 11 ⊢ ((0 ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((𝑦𝑀𝑦) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑦) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑦) ∧ (𝑦𝑀𝑦) ≤ 𝑥)))
98	2, 90, 97	sylancr 694	. . . . . . . . . 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 221	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ((𝑦𝑀𝑦) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑦) ∧ (𝑦𝑀𝑦) ≤ 𝑥))
100	99	simp3d 1068	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑦𝑀𝑦) ≤ 𝑥)
101	94, 100	eqbrtrrd 4607	. . . . . . 7 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 0 ≤ 𝑥)
102	90, 101	ge0p1rpd 11778	. . . . . 6 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ+)
103		fovrn 6702	. . . . . . . . . . . . . 14 ⊢ ((𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ∧ 𝑦 ∈ 𝑋 ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
104	103	3expa 1257	. . . . . . . . . . . . 13 ⊢ (((𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
105	104	adantlll 750	. . . . . . . . . . . 12 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ∈ (0[,]𝑥))
106		elicc2 12109	. . . . . . . . . . . . . 14 ⊢ ((0 ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((𝑦𝑀𝑧) ∈ (0[,]𝑥) ↔ ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥)))
107	2, 90, 106	sylancr 694	. . . . . . . . . . . . 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 221	. . . . . . . . . . 11 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → ((𝑦𝑀𝑧) ∈ ℝ ∧ 0 ≤ (𝑦𝑀𝑧) ∧ (𝑦𝑀𝑧) ≤ 𝑥))
110	109	simp1d 1066	. . . . . . . . . 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 10088	. . . . . . . . . . . 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 1068	. . . . . . . . . 10 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) ≤ 𝑥)
116	111	ltp1d 10833	. . . . . . . . . 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 10074	. . . . . . . . 9 ⊢ (((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) ∧ 𝑧 ∈ 𝑋) → (𝑦𝑀𝑧) < (𝑥 + 1))
118	117	ralrimiva 2949	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ∀𝑧 ∈ 𝑋 (𝑦𝑀𝑧) < (𝑥 + 1))
119		rabid2 3096	. . . . . . . 8 ⊢ (𝑋 = {𝑧 ∈ 𝑋 ∣ (𝑦𝑀𝑧) < (𝑥 + 1)} ↔ ∀𝑧 ∈ 𝑋 (𝑦𝑀𝑧) < (𝑥 + 1))
120	118, 119	sylibr 223	. . . . . . 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 9968	. . . . . . . 8 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → (𝑥 + 1) ∈ ℝ*)
123		blval 22001	. . . . . . . 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 1318	. . . . . . 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 2647	. . . . . 6 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1)))
126		oveq2 6557	. . . . . . . 8 ⊢ (𝑟 = (𝑥 + 1) → (𝑦(ball‘𝑀)𝑟) = (𝑦(ball‘𝑀)(𝑥 + 1)))
127	126	eqeq2d 2620	. . . . . . 7 ⊢ (𝑟 = (𝑥 + 1) → (𝑋 = (𝑦(ball‘𝑀)𝑟) ↔ 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1))))
128	127	rspcev 3282	. . . . . 6 ⊢ (((𝑥 + 1) ∈ ℝ+ ∧ 𝑋 = (𝑦(ball‘𝑀)(𝑥 + 1))) → ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
129	102, 125, 128	syl2anc 691	. . . . 5 ⊢ ((((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) ∧ 𝑦 ∈ 𝑋) → ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
130	129	ralrimiva 2949	. . . 4 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → ∀𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟))
131		isbnd 32749	. . . 4 ⊢ (𝑀 ∈ (Bnd‘𝑋) ↔ (𝑀 ∈ (Met‘𝑋) ∧ ∀𝑦 ∈ 𝑋 ∃𝑟 ∈ ℝ+ 𝑋 = (𝑦(ball‘𝑀)𝑟)))
132	89, 130, 131	sylanbrc 695	. . 3 ⊢ (((𝑀 ∈ (Met‘𝑋) ∧ 𝑥 ∈ ℝ) ∧ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Bnd‘𝑋))
133	132	r19.29an 3059	. 2 ⊢ ((𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)) → 𝑀 ∈ (Bnd‘𝑋))
134	88, 133	impbii 198	1 ⊢ (𝑀 ∈ (Bnd‘𝑋) ↔ (𝑀 ∈ (Met‘𝑋) ∧ ∃𝑥 ∈ ℝ 𝑀:(𝑋 × 𝑋)⟶(0[,]𝑥)))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∀wral 2896  ∃wrex 2897  {crab 2900   ⊆ wss 3540  ∅c0 3874   class class class wbr 4583   × cxp 5036  dom cdm 5038  ran crn 5039   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  ℝcr 9814  0cc0 9815  1c1 9816   + caddc 9818   · cmul 9820  ℝ^*cxr 9952   < clt 9953   ≤ cle 9954  2c2 10947  ℝ⁺crp 11708  [,]cicc 12049  ∞Metcxmt 19552  Metcme 19553  ballcbl 19554  Bndcbnd 32736

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-po 4959  df-so 4960  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-1st 7059  df-2nd 7060  df-er 7629  df-ec 7631  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-2 10956  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-icc 12053  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-bnd 32748

This theorem is referenced by:  isbnd3b  32754  prdsbnd  32762