ipcnlem2 - Metamath Proof Explorer

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Theorem ipcnlem2 25122

Description: The inner product operation of a subcomplex pre-Hilbert space is continuous. (Contributed by Mario Carneiro, 13-Oct-2015.)

**Hypotheses**
Ref	Expression
ipcn.v	⊢ 𝑉 = (Base‘𝑊)
ipcn.h	⊢ , = (·_𝑖‘𝑊)
ipcn.d	⊢ 𝐷 = (dist‘𝑊)
ipcn.n	⊢ 𝑁 = (norm‘𝑊)
ipcn.t	⊢ 𝑇 = ((𝑅 / 2) / ((𝑁‘𝐴) + 1))
ipcn.u	⊢ 𝑈 = ((𝑅 / 2) / ((𝑁‘𝐵) + 𝑇))
ipcn.w	⊢ (𝜑 → 𝑊 ∈ ℂPreHil)
ipcn.a	⊢ (𝜑 → 𝐴 ∈ 𝑉)
ipcn.b	⊢ (𝜑 → 𝐵 ∈ 𝑉)
ipcn.r	⊢ (𝜑 → 𝑅 ∈ ℝ⁺)
ipcn.x	⊢ (𝜑 → 𝑋 ∈ 𝑉)
ipcn.y	⊢ (𝜑 → 𝑌 ∈ 𝑉)
ipcn.1	⊢ (𝜑 → (𝐴𝐷𝑋) < 𝑈)
ipcn.2	⊢ (𝜑 → (𝐵𝐷𝑌) < 𝑇)

**Assertion**
Ref	Expression
ipcnlem2	⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝑋 , 𝑌))) < 𝑅)

**Proof of Theorem ipcnlem2**
Step	Hyp	Ref	Expression
1		ipcn.w	. . 3 ⊢ (𝜑 → 𝑊 ∈ ℂPreHil)
2		ipcn.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
3		ipcn.b	. . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑉)
4		ipcn.v	. . . 4 ⊢ 𝑉 = (Base‘𝑊)
5		ipcn.h	. . . 4 ⊢ , = (·_𝑖‘𝑊)
6	4, 5	cphipcl 25069	. . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → (𝐴 , 𝐵) ∈ ℂ)
7	1, 2, 3, 6	syl3anc 1368	. 2 ⊢ (𝜑 → (𝐴 , 𝐵) ∈ ℂ)
8		ipcn.x	. . 3 ⊢ (𝜑 → 𝑋 ∈ 𝑉)
9		ipcn.y	. . 3 ⊢ (𝜑 → 𝑌 ∈ 𝑉)
10	4, 5	cphipcl 25069	. . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝑋 , 𝑌) ∈ ℂ)
11	1, 8, 9, 10	syl3anc 1368	. 2 ⊢ (𝜑 → (𝑋 , 𝑌) ∈ ℂ)
12	4, 5	cphipcl 25069	. . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝐴 , 𝑌) ∈ ℂ)
13	1, 2, 9, 12	syl3anc 1368	. 2 ⊢ (𝜑 → (𝐴 , 𝑌) ∈ ℂ)
14		ipcn.r	. . 3 ⊢ (𝜑 → 𝑅 ∈ ℝ⁺)
15	14	rpred 13019	. 2 ⊢ (𝜑 → 𝑅 ∈ ℝ)
16	7, 13	subcld 11572	. . . 4 ⊢ (𝜑 → ((𝐴 , 𝐵) − (𝐴 , 𝑌)) ∈ ℂ)
17	16	abscld 15386	. . 3 ⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝐴 , 𝑌))) ∈ ℝ)
18		cphnlm 25050	. . . . . . . . 9 ⊢ (𝑊 ∈ ℂPreHil → 𝑊 ∈ NrmMod)
19	1, 18	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑊 ∈ NrmMod)
20		nlmngp 24544	. . . . . . . 8 ⊢ (𝑊 ∈ NrmMod → 𝑊 ∈ NrmGrp)
21	19, 20	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑊 ∈ NrmGrp)
22		ipcn.n	. . . . . . . 8 ⊢ 𝑁 = (norm‘𝑊)
23	4, 22	nmcl 24475	. . . . . . 7 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐴 ∈ 𝑉) → (𝑁‘𝐴) ∈ ℝ)
24	21, 2, 23	syl2anc 583	. . . . . 6 ⊢ (𝜑 → (𝑁‘𝐴) ∈ ℝ)
25	4, 22	nmge0 24476	. . . . . . 7 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐴 ∈ 𝑉) → 0 ≤ (𝑁‘𝐴))
26	21, 2, 25	syl2anc 583	. . . . . 6 ⊢ (𝜑 → 0 ≤ (𝑁‘𝐴))
27	24, 26	ge0p1rpd 13049	. . . . 5 ⊢ (𝜑 → ((𝑁‘𝐴) + 1) ∈ ℝ⁺)
28	27	rpred 13019	. . . 4 ⊢ (𝜑 → ((𝑁‘𝐴) + 1) ∈ ℝ)
29		ngpms 24459	. . . . . 6 ⊢ (𝑊 ∈ NrmGrp → 𝑊 ∈ MetSp)
30	21, 29	syl 17	. . . . 5 ⊢ (𝜑 → 𝑊 ∈ MetSp)
31		ipcn.d	. . . . . 6 ⊢ 𝐷 = (dist‘𝑊)
32	4, 31	mscl 24317	. . . . 5 ⊢ ((𝑊 ∈ MetSp ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝐵𝐷𝑌) ∈ ℝ)
33	30, 3, 9, 32	syl3anc 1368	. . . 4 ⊢ (𝜑 → (𝐵𝐷𝑌) ∈ ℝ)
34	28, 33	remulcld 11245	. . 3 ⊢ (𝜑 → (((𝑁‘𝐴) + 1) · (𝐵𝐷𝑌)) ∈ ℝ)
35	15	rehalfcld 12460	. . 3 ⊢ (𝜑 → (𝑅 / 2) ∈ ℝ)
36	24, 33	remulcld 11245	. . . 4 ⊢ (𝜑 → ((𝑁‘𝐴) · (𝐵𝐷𝑌)) ∈ ℝ)
37		eqid 2726	. . . . . . . 8 ⊢ (-_g‘𝑊) = (-_g‘𝑊)
38	5, 4, 37	cphsubdi 25087	. . . . . . 7 ⊢ ((𝑊 ∈ ℂPreHil ∧ (𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → (𝐴 , (𝐵(-_g‘𝑊)𝑌)) = ((𝐴 , 𝐵) − (𝐴 , 𝑌)))
39	1, 2, 3, 9, 38	syl13anc 1369	. . . . . 6 ⊢ (𝜑 → (𝐴 , (𝐵(-_g‘𝑊)𝑌)) = ((𝐴 , 𝐵) − (𝐴 , 𝑌)))
40	39	fveq2d 6888	. . . . 5 ⊢ (𝜑 → (abs‘(𝐴 , (𝐵(-_g‘𝑊)𝑌))) = (abs‘((𝐴 , 𝐵) − (𝐴 , 𝑌))))
41		ngpgrp 24458	. . . . . . . . 9 ⊢ (𝑊 ∈ NrmGrp → 𝑊 ∈ Grp)
42	21, 41	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑊 ∈ Grp)
43	4, 37	grpsubcl 18945	. . . . . . . 8 ⊢ ((𝑊 ∈ Grp ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝐵(-_g‘𝑊)𝑌) ∈ 𝑉)
44	42, 3, 9, 43	syl3anc 1368	. . . . . . 7 ⊢ (𝜑 → (𝐵(-_g‘𝑊)𝑌) ∈ 𝑉)
45	4, 5, 22	ipcau 25116	. . . . . . 7 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ (𝐵(-_g‘𝑊)𝑌) ∈ 𝑉) → (abs‘(𝐴 , (𝐵(-_g‘𝑊)𝑌))) ≤ ((𝑁‘𝐴) · (𝑁‘(𝐵(-_g‘𝑊)𝑌))))
46	1, 2, 44, 45	syl3anc 1368	. . . . . 6 ⊢ (𝜑 → (abs‘(𝐴 , (𝐵(-_g‘𝑊)𝑌))) ≤ ((𝑁‘𝐴) · (𝑁‘(𝐵(-_g‘𝑊)𝑌))))
47	22, 4, 37, 31	ngpds 24463	. . . . . . . 8 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝐵𝐷𝑌) = (𝑁‘(𝐵(-_g‘𝑊)𝑌)))
48	21, 3, 9, 47	syl3anc 1368	. . . . . . 7 ⊢ (𝜑 → (𝐵𝐷𝑌) = (𝑁‘(𝐵(-_g‘𝑊)𝑌)))
49	48	oveq2d 7420	. . . . . 6 ⊢ (𝜑 → ((𝑁‘𝐴) · (𝐵𝐷𝑌)) = ((𝑁‘𝐴) · (𝑁‘(𝐵(-_g‘𝑊)𝑌))))
50	46, 49	breqtrrd 5169	. . . . 5 ⊢ (𝜑 → (abs‘(𝐴 , (𝐵(-_g‘𝑊)𝑌))) ≤ ((𝑁‘𝐴) · (𝐵𝐷𝑌)))
51	40, 50	eqbrtrrd 5165	. . . 4 ⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝐴 , 𝑌))) ≤ ((𝑁‘𝐴) · (𝐵𝐷𝑌)))
52		msxms 24310	. . . . . . 7 ⊢ (𝑊 ∈ MetSp → 𝑊 ∈ ∞MetSp)
53	30, 52	syl 17	. . . . . 6 ⊢ (𝜑 → 𝑊 ∈ ∞MetSp)
54	4, 31	xmsge0 24319	. . . . . 6 ⊢ ((𝑊 ∈ ∞MetSp ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 0 ≤ (𝐵𝐷𝑌))
55	53, 3, 9, 54	syl3anc 1368	. . . . 5 ⊢ (𝜑 → 0 ≤ (𝐵𝐷𝑌))
56	24	lep1d 12146	. . . . 5 ⊢ (𝜑 → (𝑁‘𝐴) ≤ ((𝑁‘𝐴) + 1))
57	24, 28, 33, 55, 56	lemul1ad 12154	. . . 4 ⊢ (𝜑 → ((𝑁‘𝐴) · (𝐵𝐷𝑌)) ≤ (((𝑁‘𝐴) + 1) · (𝐵𝐷𝑌)))
58	17, 36, 34, 51, 57	letrd 11372	. . 3 ⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝐴 , 𝑌))) ≤ (((𝑁‘𝐴) + 1) · (𝐵𝐷𝑌)))
59		ipcn.2	. . . . 5 ⊢ (𝜑 → (𝐵𝐷𝑌) < 𝑇)
60		ipcn.t	. . . . 5 ⊢ 𝑇 = ((𝑅 / 2) / ((𝑁‘𝐴) + 1))
61	59, 60	breqtrdi 5182	. . . 4 ⊢ (𝜑 → (𝐵𝐷𝑌) < ((𝑅 / 2) / ((𝑁‘𝐴) + 1)))
62	33, 35, 27	ltmuldiv2d 13067	. . . 4 ⊢ (𝜑 → ((((𝑁‘𝐴) + 1) · (𝐵𝐷𝑌)) < (𝑅 / 2) ↔ (𝐵𝐷𝑌) < ((𝑅 / 2) / ((𝑁‘𝐴) + 1))))
63	61, 62	mpbird 257	. . 3 ⊢ (𝜑 → (((𝑁‘𝐴) + 1) · (𝐵𝐷𝑌)) < (𝑅 / 2))
64	17, 34, 35, 58, 63	lelttrd 11373	. 2 ⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝐴 , 𝑌))) < (𝑅 / 2))
65	13, 11	subcld 11572	. . . 4 ⊢ (𝜑 → ((𝐴 , 𝑌) − (𝑋 , 𝑌)) ∈ ℂ)
66	65	abscld 15386	. . 3 ⊢ (𝜑 → (abs‘((𝐴 , 𝑌) − (𝑋 , 𝑌))) ∈ ℝ)
67	4, 31	mscl 24317	. . . . 5 ⊢ ((𝑊 ∈ MetSp ∧ 𝐴 ∈ 𝑉 ∧ 𝑋 ∈ 𝑉) → (𝐴𝐷𝑋) ∈ ℝ)
68	30, 2, 8, 67	syl3anc 1368	. . . 4 ⊢ (𝜑 → (𝐴𝐷𝑋) ∈ ℝ)
69	4, 22	nmcl 24475	. . . . . 6 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐵 ∈ 𝑉) → (𝑁‘𝐵) ∈ ℝ)
70	21, 3, 69	syl2anc 583	. . . . 5 ⊢ (𝜑 → (𝑁‘𝐵) ∈ ℝ)
71	14	rphalfcld 13031	. . . . . . . 8 ⊢ (𝜑 → (𝑅 / 2) ∈ ℝ⁺)
72	71, 27	rpdivcld 13036	. . . . . . 7 ⊢ (𝜑 → ((𝑅 / 2) / ((𝑁‘𝐴) + 1)) ∈ ℝ⁺)
73	60, 72	eqeltrid 2831	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ ℝ⁺)
74	73	rpred 13019	. . . . 5 ⊢ (𝜑 → 𝑇 ∈ ℝ)
75	70, 74	readdcld 11244	. . . 4 ⊢ (𝜑 → ((𝑁‘𝐵) + 𝑇) ∈ ℝ)
76	68, 75	remulcld 11245	. . 3 ⊢ (𝜑 → ((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)) ∈ ℝ)
77	4, 22	nmcl 24475	. . . . . 6 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝑌 ∈ 𝑉) → (𝑁‘𝑌) ∈ ℝ)
78	21, 9, 77	syl2anc 583	. . . . 5 ⊢ (𝜑 → (𝑁‘𝑌) ∈ ℝ)
79	68, 78	remulcld 11245	. . . 4 ⊢ (𝜑 → ((𝐴𝐷𝑋) · (𝑁‘𝑌)) ∈ ℝ)
80	5, 4, 37	cphsubdir 25086	. . . . . . 7 ⊢ ((𝑊 ∈ ℂPreHil ∧ (𝐴 ∈ 𝑉 ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉)) → ((𝐴(-_g‘𝑊)𝑋) , 𝑌) = ((𝐴 , 𝑌) − (𝑋 , 𝑌)))
81	1, 2, 8, 9, 80	syl13anc 1369	. . . . . 6 ⊢ (𝜑 → ((𝐴(-_g‘𝑊)𝑋) , 𝑌) = ((𝐴 , 𝑌) − (𝑋 , 𝑌)))
82	81	fveq2d 6888	. . . . 5 ⊢ (𝜑 → (abs‘((𝐴(-_g‘𝑊)𝑋) , 𝑌)) = (abs‘((𝐴 , 𝑌) − (𝑋 , 𝑌))))
83	4, 37	grpsubcl 18945	. . . . . . . 8 ⊢ ((𝑊 ∈ Grp ∧ 𝐴 ∈ 𝑉 ∧ 𝑋 ∈ 𝑉) → (𝐴(-_g‘𝑊)𝑋) ∈ 𝑉)
84	42, 2, 8, 83	syl3anc 1368	. . . . . . 7 ⊢ (𝜑 → (𝐴(-_g‘𝑊)𝑋) ∈ 𝑉)
85	4, 5, 22	ipcau 25116	. . . . . . 7 ⊢ ((𝑊 ∈ ℂPreHil ∧ (𝐴(-_g‘𝑊)𝑋) ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (abs‘((𝐴(-_g‘𝑊)𝑋) , 𝑌)) ≤ ((𝑁‘(𝐴(-_g‘𝑊)𝑋)) · (𝑁‘𝑌)))
86	1, 84, 9, 85	syl3anc 1368	. . . . . 6 ⊢ (𝜑 → (abs‘((𝐴(-_g‘𝑊)𝑋) , 𝑌)) ≤ ((𝑁‘(𝐴(-_g‘𝑊)𝑋)) · (𝑁‘𝑌)))
87	22, 4, 37, 31	ngpds 24463	. . . . . . . 8 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐴 ∈ 𝑉 ∧ 𝑋 ∈ 𝑉) → (𝐴𝐷𝑋) = (𝑁‘(𝐴(-_g‘𝑊)𝑋)))
88	21, 2, 8, 87	syl3anc 1368	. . . . . . 7 ⊢ (𝜑 → (𝐴𝐷𝑋) = (𝑁‘(𝐴(-_g‘𝑊)𝑋)))
89	88	oveq1d 7419	. . . . . 6 ⊢ (𝜑 → ((𝐴𝐷𝑋) · (𝑁‘𝑌)) = ((𝑁‘(𝐴(-_g‘𝑊)𝑋)) · (𝑁‘𝑌)))
90	86, 89	breqtrrd 5169	. . . . 5 ⊢ (𝜑 → (abs‘((𝐴(-_g‘𝑊)𝑋) , 𝑌)) ≤ ((𝐴𝐷𝑋) · (𝑁‘𝑌)))
91	82, 90	eqbrtrrd 5165	. . . 4 ⊢ (𝜑 → (abs‘((𝐴 , 𝑌) − (𝑋 , 𝑌))) ≤ ((𝐴𝐷𝑋) · (𝑁‘𝑌)))
92	4, 31	xmsge0 24319	. . . . . 6 ⊢ ((𝑊 ∈ ∞MetSp ∧ 𝐴 ∈ 𝑉 ∧ 𝑋 ∈ 𝑉) → 0 ≤ (𝐴𝐷𝑋))
93	53, 2, 8, 92	syl3anc 1368	. . . . 5 ⊢ (𝜑 → 0 ≤ (𝐴𝐷𝑋))
94	78, 70	resubcld 11643	. . . . . . 7 ⊢ (𝜑 → ((𝑁‘𝑌) − (𝑁‘𝐵)) ∈ ℝ)
95	4, 22, 37	nm2dif 24484	. . . . . . . . 9 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝑌 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → ((𝑁‘𝑌) − (𝑁‘𝐵)) ≤ (𝑁‘(𝑌(-_g‘𝑊)𝐵)))
96	21, 9, 3, 95	syl3anc 1368	. . . . . . . 8 ⊢ (𝜑 → ((𝑁‘𝑌) − (𝑁‘𝐵)) ≤ (𝑁‘(𝑌(-_g‘𝑊)𝐵)))
97	22, 4, 37, 31	ngpdsr 24464	. . . . . . . . 9 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐵 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝐵𝐷𝑌) = (𝑁‘(𝑌(-_g‘𝑊)𝐵)))
98	21, 3, 9, 97	syl3anc 1368	. . . . . . . 8 ⊢ (𝜑 → (𝐵𝐷𝑌) = (𝑁‘(𝑌(-_g‘𝑊)𝐵)))
99	96, 98	breqtrrd 5169	. . . . . . 7 ⊢ (𝜑 → ((𝑁‘𝑌) − (𝑁‘𝐵)) ≤ (𝐵𝐷𝑌))
100	33, 74, 59	ltled 11363	. . . . . . 7 ⊢ (𝜑 → (𝐵𝐷𝑌) ≤ 𝑇)
101	94, 33, 74, 99, 100	letrd 11372	. . . . . 6 ⊢ (𝜑 → ((𝑁‘𝑌) − (𝑁‘𝐵)) ≤ 𝑇)
102	78, 70, 74	lesubadd2d 11814	. . . . . 6 ⊢ (𝜑 → (((𝑁‘𝑌) − (𝑁‘𝐵)) ≤ 𝑇 ↔ (𝑁‘𝑌) ≤ ((𝑁‘𝐵) + 𝑇)))
103	101, 102	mpbid 231	. . . . 5 ⊢ (𝜑 → (𝑁‘𝑌) ≤ ((𝑁‘𝐵) + 𝑇))
104	78, 75, 68, 93, 103	lemul2ad 12155	. . . 4 ⊢ (𝜑 → ((𝐴𝐷𝑋) · (𝑁‘𝑌)) ≤ ((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)))
105	66, 79, 76, 91, 104	letrd 11372	. . 3 ⊢ (𝜑 → (abs‘((𝐴 , 𝑌) − (𝑋 , 𝑌))) ≤ ((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)))
106		ipcn.1	. . . . 5 ⊢ (𝜑 → (𝐴𝐷𝑋) < 𝑈)
107		ipcn.u	. . . . 5 ⊢ 𝑈 = ((𝑅 / 2) / ((𝑁‘𝐵) + 𝑇))
108	106, 107	breqtrdi 5182	. . . 4 ⊢ (𝜑 → (𝐴𝐷𝑋) < ((𝑅 / 2) / ((𝑁‘𝐵) + 𝑇)))
109		0red 11218	. . . . . 6 ⊢ (𝜑 → 0 ∈ ℝ)
110	4, 22	nmge0 24476	. . . . . . 7 ⊢ ((𝑊 ∈ NrmGrp ∧ 𝐵 ∈ 𝑉) → 0 ≤ (𝑁‘𝐵))
111	21, 3, 110	syl2anc 583	. . . . . 6 ⊢ (𝜑 → 0 ≤ (𝑁‘𝐵))
112	70, 73	ltaddrpd 13052	. . . . . 6 ⊢ (𝜑 → (𝑁‘𝐵) < ((𝑁‘𝐵) + 𝑇))
113	109, 70, 75, 111, 112	lelttrd 11373	. . . . 5 ⊢ (𝜑 → 0 < ((𝑁‘𝐵) + 𝑇))
114		ltmuldiv 12088	. . . . 5 ⊢ (((𝐴𝐷𝑋) ∈ ℝ ∧ (𝑅 / 2) ∈ ℝ ∧ (((𝑁‘𝐵) + 𝑇) ∈ ℝ ∧ 0 < ((𝑁‘𝐵) + 𝑇))) → (((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)) < (𝑅 / 2) ↔ (𝐴𝐷𝑋) < ((𝑅 / 2) / ((𝑁‘𝐵) + 𝑇))))
115	68, 35, 75, 113, 114	syl112anc 1371	. . . 4 ⊢ (𝜑 → (((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)) < (𝑅 / 2) ↔ (𝐴𝐷𝑋) < ((𝑅 / 2) / ((𝑁‘𝐵) + 𝑇))))
116	108, 115	mpbird 257	. . 3 ⊢ (𝜑 → ((𝐴𝐷𝑋) · ((𝑁‘𝐵) + 𝑇)) < (𝑅 / 2))
117	66, 76, 35, 105, 116	lelttrd 11373	. 2 ⊢ (𝜑 → (abs‘((𝐴 , 𝑌) − (𝑋 , 𝑌))) < (𝑅 / 2))
118	7, 11, 13, 15, 64, 117	abs3lemd 15411	1 ⊢ (𝜑 → (abs‘((𝐴 , 𝐵) − (𝑋 , 𝑌))) < 𝑅)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 = wceq 1533 ∈ wcel 2098 class class class wbr 5141 ‘cfv 6536 (class class class)co 7404 ℂcc 11107 ℝcr 11108 0cc0 11109 1c1 11110 + caddc 11112 · cmul 11114 < clt 11249 ≤ cle 11250 − cmin 11445 / cdiv 11872 2c2 12268 ℝ⁺crp 12977 abscabs 15184 Basecbs 17150 ·_𝑖cip 17208 distcds 17212 Grpcgrp 18860 -_gcsg 18862 ∞MetSpcxms 24173 MetSpcms 24174 normcnm 24435 NrmGrpcngp 24436 NrmModcnlm 24439 ℂPreHilccph 25044

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7721 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-pre-sup 11187 ax-addf 11188 ax-mulf 11189

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-tp 4628 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6293 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6488 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7852 df-1st 7971 df-2nd 7972 df-tpos 8209 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-1o 8464 df-er 8702 df-map 8821 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-sup 9436 df-inf 9437 df-pnf 11251 df-mnf 11252 df-xr 11253 df-ltxr 11254 df-le 11255 df-sub 11447 df-neg 11448 df-div 11873 df-nn 12214 df-2 12276 df-3 12277 df-4 12278 df-5 12279 df-6 12280 df-7 12281 df-8 12282 df-9 12283 df-n0 12474 df-z 12560 df-dec 12679 df-uz 12824 df-q 12934 df-rp 12978 df-xneg 13095 df-xadd 13096 df-xmul 13097 df-ico 13333 df-fz 13488 df-seq 13970 df-exp 14030 df-cj 15049 df-re 15050 df-im 15051 df-sqrt 15185 df-abs 15186 df-struct 17086 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17151 df-ress 17180 df-plusg 17216 df-mulr 17217 df-starv 17218 df-sca 17219 df-vsca 17220 df-ip 17221 df-tset 17222 df-ple 17223 df-ds 17225 df-unif 17226 df-0g 17393 df-topgen 17395 df-xrs 17454 df-mgm 18570 df-sgrp 18649 df-mnd 18665 df-mhm 18710 df-grp 18863 df-minusg 18864 df-sbg 18865 df-subg 19047 df-ghm 19136 df-cmn 19699 df-abl 19700 df-mgp 20037 df-rng 20055 df-ur 20084 df-ring 20137 df-cring 20138 df-oppr 20233 df-dvdsr 20256 df-unit 20257 df-invr 20287 df-dvr 20300 df-rhm 20371 df-subrng 20443 df-subrg 20468 df-drng 20586 df-staf 20685 df-srng 20686 df-lmod 20705 df-lmhm 20867 df-lvec 20948 df-sra 21018 df-rgmod 21019 df-psmet 21227 df-xmet 21228 df-met 21229 df-bl 21230 df-mopn 21231 df-cnfld 21236 df-phl 21514 df-top 22746 df-topon 22763 df-topsp 22785 df-bases 22799 df-xms 24176 df-ms 24177 df-nm 24441 df-ngp 24442 df-tng 24443 df-nlm 24445 df-clm 24940 df-cph 25046 df-tcph 25047

This theorem is referenced by: ipcnlem1 25123

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