nrginvrcnlem - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > nrginvrcnlem		Structured version Visualization version GIF version

Theorem nrginvrcnlem 24582

Description: Lemma for nrginvrcn 24583. Compare this proof with reccn2 15559, the elementary proof of continuity of division. (Contributed by Mario Carneiro, 6-Oct-2015.)

**Hypotheses**
Ref	Expression
nrginvrcn.x	⊢ 𝑋 = (Base‘𝑅)
nrginvrcn.u	⊢ 𝑈 = (Unit‘𝑅)
nrginvrcn.i	⊢ 𝐼 = (inv_r‘𝑅)
nrginvrcn.n	⊢ 𝑁 = (norm‘𝑅)
nrginvrcn.d	⊢ 𝐷 = (dist‘𝑅)
nrginvrcn.r	⊢ (𝜑 → 𝑅 ∈ NrmRing)
nrginvrcn.z	⊢ (𝜑 → 𝑅 ∈ NzRing)
nrginvrcn.a	⊢ (𝜑 → 𝐴 ∈ 𝑈)
nrginvrcn.b	⊢ (𝜑 → 𝐵 ∈ ℝ⁺)
nrginvrcn.t	⊢ 𝑇 = (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2))

**Assertion**
Ref	Expression
nrginvrcnlem	⊢ (𝜑 → ∃𝑥 ∈ ℝ⁺ ∀𝑦 ∈ 𝑈 ((𝐴𝐷𝑦) < 𝑥 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵))

Distinct variable groups: 𝑥,𝑦,𝐼 𝜑,𝑦 𝑥,𝑅,𝑦 𝑥,𝑇,𝑦 𝑥,𝑈,𝑦 𝑥,𝐴 𝑥,𝐵 𝑥,𝐷 Allowed substitution hints: 𝜑(𝑥) 𝐴(𝑦) 𝐵(𝑦) 𝐷(𝑦) 𝑁(𝑥,𝑦) 𝑋(𝑥,𝑦)

**Proof of Theorem nrginvrcnlem**
Step	Hyp	Ref	Expression
1		nrginvrcn.t	. . 3 ⊢ 𝑇 = (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2))
2		1rp 12996	. . . . 5 ⊢ 1 ∈ ℝ⁺
3		nrginvrcn.r	. . . . . . . 8 ⊢ (𝜑 → 𝑅 ∈ NrmRing)
4		nrgngp 24553	. . . . . . . 8 ⊢ (𝑅 ∈ NrmRing → 𝑅 ∈ NrmGrp)
5	3, 4	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑅 ∈ NrmGrp)
6		nrginvrcn.x	. . . . . . . . 9 ⊢ 𝑋 = (Base‘𝑅)
7		nrginvrcn.u	. . . . . . . . 9 ⊢ 𝑈 = (Unit‘𝑅)
8	6, 7	unitss 20297	. . . . . . . 8 ⊢ 𝑈 ⊆ 𝑋
9		nrginvrcn.a	. . . . . . . 8 ⊢ (𝜑 → 𝐴 ∈ 𝑈)
10	8, 9	sselid 3976	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ 𝑋)
11		nrginvrcn.z	. . . . . . . 8 ⊢ (𝜑 → 𝑅 ∈ NzRing)
12		eqid 2727	. . . . . . . . 9 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
13	7, 12	nzrunit 20443	. . . . . . . 8 ⊢ ((𝑅 ∈ NzRing ∧ 𝐴 ∈ 𝑈) → 𝐴 ≠ (0_g‘𝑅))
14	11, 9, 13	syl2anc 583	. . . . . . 7 ⊢ (𝜑 → 𝐴 ≠ (0_g‘𝑅))
15		nrginvrcn.n	. . . . . . . 8 ⊢ 𝑁 = (norm‘𝑅)
16	6, 15, 12	nmrpcl 24503	. . . . . . 7 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ 𝑋 ∧ 𝐴 ≠ (0_g‘𝑅)) → (𝑁‘𝐴) ∈ ℝ⁺)
17	5, 10, 14, 16	syl3anc 1369	. . . . . 6 ⊢ (𝜑 → (𝑁‘𝐴) ∈ ℝ⁺)
18		nrginvrcn.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ⁺)
19	17, 18	rpmulcld 13050	. . . . 5 ⊢ (𝜑 → ((𝑁‘𝐴) · 𝐵) ∈ ℝ⁺)
20		ifcl 4569	. . . . 5 ⊢ ((1 ∈ ℝ⁺ ∧ ((𝑁‘𝐴) · 𝐵) ∈ ℝ⁺) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ∈ ℝ⁺)
21	2, 19, 20	sylancr 586	. . . 4 ⊢ (𝜑 → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ∈ ℝ⁺)
22	17	rphalfcld 13046	. . . 4 ⊢ (𝜑 → ((𝑁‘𝐴) / 2) ∈ ℝ⁺)
23	21, 22	rpmulcld 13050	. . 3 ⊢ (𝜑 → (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2)) ∈ ℝ⁺)
24	1, 23	eqeltrid 2832	. 2 ⊢ (𝜑 → 𝑇 ∈ ℝ⁺)
25	5	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑅 ∈ NrmGrp)
26	9	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝐴 ∈ 𝑈)
27	6, 7	unitcl 20296	. . . . . . . . . . . 12 ⊢ (𝐴 ∈ 𝑈 → 𝐴 ∈ 𝑋)
28	26, 27	syl 17	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝐴 ∈ 𝑋)
29	6, 15	nmcl 24499	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ 𝑋) → (𝑁‘𝐴) ∈ ℝ)
30	25, 28, 29	syl2anc 583	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝐴) ∈ ℝ)
31	30	recnd 11258	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝐴) ∈ ℂ)
32		simprl 770	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑦 ∈ 𝑈)
33	8, 32	sselid 3976	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑦 ∈ 𝑋)
34	6, 15	nmcl 24499	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝑦 ∈ 𝑋) → (𝑁‘𝑦) ∈ ℝ)
35	25, 33, 34	syl2anc 583	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝑦) ∈ ℝ)
36	35	recnd 11258	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝑦) ∈ ℂ)
37		ngpgrp 24482	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ NrmGrp → 𝑅 ∈ Grp)
38	25, 37	syl 17	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑅 ∈ Grp)
39		nrgring 24554	. . . . . . . . . . . . . . 15 ⊢ (𝑅 ∈ NrmRing → 𝑅 ∈ Ring)
40	3, 39	syl 17	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑅 ∈ Ring)
41	40	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑅 ∈ Ring)
42		nrginvrcn.i	. . . . . . . . . . . . . 14 ⊢ 𝐼 = (inv_r‘𝑅)
43	7, 42, 6	ringinvcl 20313	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑈) → (𝐼‘𝐴) ∈ 𝑋)
44	41, 26, 43	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐼‘𝐴) ∈ 𝑋)
45	7, 42, 6	ringinvcl 20313	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ Ring ∧ 𝑦 ∈ 𝑈) → (𝐼‘𝑦) ∈ 𝑋)
46	41, 32, 45	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐼‘𝑦) ∈ 𝑋)
47		eqid 2727	. . . . . . . . . . . . 13 ⊢ (-_g‘𝑅) = (-_g‘𝑅)
48	6, 47	grpsubcl 18960	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Grp ∧ (𝐼‘𝐴) ∈ 𝑋 ∧ (𝐼‘𝑦) ∈ 𝑋) → ((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)) ∈ 𝑋)
49	38, 44, 46, 48	syl3anc 1369	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)) ∈ 𝑋)
50	6, 15	nmcl 24499	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ NrmGrp ∧ ((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)) ∈ 𝑋) → (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) ∈ ℝ)
51	25, 49, 50	syl2anc 583	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) ∈ ℝ)
52	51	recnd 11258	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) ∈ ℂ)
53	31, 36, 52	mul32d 11440	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · (𝑁‘𝑦)) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = (((𝑁‘𝐴) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)))
54	3	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑅 ∈ NrmRing)
55		eqid 2727	. . . . . . . . . . . 12 ⊢ (._r‘𝑅) = (._r‘𝑅)
56	6, 15, 55	nmmul 24555	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ NrmRing ∧ 𝐴 ∈ 𝑋 ∧ ((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)) ∈ 𝑋) → (𝑁‘(𝐴(._r‘𝑅)((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = ((𝑁‘𝐴) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))))
57	54, 28, 49, 56	syl3anc 1369	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(𝐴(._r‘𝑅)((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = ((𝑁‘𝐴) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))))
58	6, 55, 47, 41, 28, 44, 46	ringsubdi 20225	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) = ((𝐴(._r‘𝑅)(𝐼‘𝐴))(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))))
59		eqid 2727	. . . . . . . . . . . . . . 15 ⊢ (1_r‘𝑅) = (1_r‘𝑅)
60	7, 42, 55, 59	unitrinv 20315	. . . . . . . . . . . . . 14 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑈) → (𝐴(._r‘𝑅)(𝐼‘𝐴)) = (1_r‘𝑅))
61	41, 26, 60	syl2anc 583	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)(𝐼‘𝐴)) = (1_r‘𝑅))
62	61	oveq1d 7429	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐴(._r‘𝑅)(𝐼‘𝐴))(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))) = ((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))))
63	58, 62	eqtrd 2767	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) = ((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))))
64	63	fveq2d 6895	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(𝐴(._r‘𝑅)((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = (𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))))
65	57, 64	eqtr3d 2769	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = (𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))))
66	65	oveq1d 7429	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)) = ((𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)))
67	6, 59	ringidcl 20184	. . . . . . . . . . . 12 ⊢ (𝑅 ∈ Ring → (1_r‘𝑅) ∈ 𝑋)
68	41, 67	syl 17	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (1_r‘𝑅) ∈ 𝑋)
69	6, 55	ringcl 20174	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑋 ∧ (𝐼‘𝑦) ∈ 𝑋) → (𝐴(._r‘𝑅)(𝐼‘𝑦)) ∈ 𝑋)
70	41, 28, 46, 69	syl3anc 1369	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)(𝐼‘𝑦)) ∈ 𝑋)
71	6, 47	grpsubcl 18960	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Grp ∧ (1_r‘𝑅) ∈ 𝑋 ∧ (𝐴(._r‘𝑅)(𝐼‘𝑦)) ∈ 𝑋) → ((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))) ∈ 𝑋)
72	38, 68, 70, 71	syl3anc 1369	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))) ∈ 𝑋)
73	6, 15, 55	nmmul 24555	. . . . . . . . . 10 ⊢ ((𝑅 ∈ NrmRing ∧ ((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦))) ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → (𝑁‘(((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))(._r‘𝑅)𝑦)) = ((𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)))
74	54, 72, 33, 73	syl3anc 1369	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))(._r‘𝑅)𝑦)) = ((𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)))
75	6, 55, 47, 41, 68, 70, 33	ringsubdir 20226	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))(._r‘𝑅)𝑦) = (((1_r‘𝑅)(._r‘𝑅)𝑦)(-_g‘𝑅)((𝐴(._r‘𝑅)(𝐼‘𝑦))(._r‘𝑅)𝑦)))
76	6, 55, 59	ringlidm 20187	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ Ring ∧ 𝑦 ∈ 𝑋) → ((1_r‘𝑅)(._r‘𝑅)𝑦) = 𝑦)
77	41, 33, 76	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((1_r‘𝑅)(._r‘𝑅)𝑦) = 𝑦)
78	6, 55	ringass 20177	. . . . . . . . . . . . . 14 ⊢ ((𝑅 ∈ Ring ∧ (𝐴 ∈ 𝑋 ∧ (𝐼‘𝑦) ∈ 𝑋 ∧ 𝑦 ∈ 𝑋)) → ((𝐴(._r‘𝑅)(𝐼‘𝑦))(._r‘𝑅)𝑦) = (𝐴(._r‘𝑅)((𝐼‘𝑦)(._r‘𝑅)𝑦)))
79	41, 28, 46, 33, 78	syl13anc 1370	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐴(._r‘𝑅)(𝐼‘𝑦))(._r‘𝑅)𝑦) = (𝐴(._r‘𝑅)((𝐼‘𝑦)(._r‘𝑅)𝑦)))
80	7, 42, 55, 59	unitlinv 20314	. . . . . . . . . . . . . . 15 ⊢ ((𝑅 ∈ Ring ∧ 𝑦 ∈ 𝑈) → ((𝐼‘𝑦)(._r‘𝑅)𝑦) = (1_r‘𝑅))
81	41, 32, 80	syl2anc 583	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐼‘𝑦)(._r‘𝑅)𝑦) = (1_r‘𝑅))
82	81	oveq2d 7430	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)((𝐼‘𝑦)(._r‘𝑅)𝑦)) = (𝐴(._r‘𝑅)(1_r‘𝑅)))
83	6, 55, 59	ringridm 20188	. . . . . . . . . . . . . 14 ⊢ ((𝑅 ∈ Ring ∧ 𝐴 ∈ 𝑋) → (𝐴(._r‘𝑅)(1_r‘𝑅)) = 𝐴)
84	41, 28, 83	syl2anc 583	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴(._r‘𝑅)(1_r‘𝑅)) = 𝐴)
85	79, 82, 84	3eqtrd 2771	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐴(._r‘𝑅)(𝐼‘𝑦))(._r‘𝑅)𝑦) = 𝐴)
86	77, 85	oveq12d 7432	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((1_r‘𝑅)(._r‘𝑅)𝑦)(-_g‘𝑅)((𝐴(._r‘𝑅)(𝐼‘𝑦))(._r‘𝑅)𝑦)) = (𝑦(-_g‘𝑅)𝐴))
87	75, 86	eqtrd 2767	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))(._r‘𝑅)𝑦) = (𝑦(-_g‘𝑅)𝐴))
88	87	fveq2d 6895	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))(._r‘𝑅)𝑦)) = (𝑁‘(𝑦(-_g‘𝑅)𝐴)))
89	74, 88	eqtr3d 2769	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘((1_r‘𝑅)(-_g‘𝑅)(𝐴(._r‘𝑅)(𝐼‘𝑦)))) · (𝑁‘𝑦)) = (𝑁‘(𝑦(-_g‘𝑅)𝐴)))
90	53, 66, 89	3eqtrd 2771	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · (𝑁‘𝑦)) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = (𝑁‘(𝑦(-_g‘𝑅)𝐴)))
91	6, 47	grpsubcl 18960	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ Grp ∧ 𝑦 ∈ 𝑋 ∧ 𝐴 ∈ 𝑋) → (𝑦(-_g‘𝑅)𝐴) ∈ 𝑋)
92	38, 33, 28, 91	syl3anc 1369	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑦(-_g‘𝑅)𝐴) ∈ 𝑋)
93	6, 15	nmcl 24499	. . . . . . . . . 10 ⊢ ((𝑅 ∈ NrmGrp ∧ (𝑦(-_g‘𝑅)𝐴) ∈ 𝑋) → (𝑁‘(𝑦(-_g‘𝑅)𝐴)) ∈ ℝ)
94	25, 92, 93	syl2anc 583	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(𝑦(-_g‘𝑅)𝐴)) ∈ ℝ)
95	94	recnd 11258	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘(𝑦(-_g‘𝑅)𝐴)) ∈ ℂ)
96	17	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝐴) ∈ ℝ⁺)
97	11	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑅 ∈ NzRing)
98	7, 12	nzrunit 20443	. . . . . . . . . . . . 13 ⊢ ((𝑅 ∈ NzRing ∧ 𝑦 ∈ 𝑈) → 𝑦 ≠ (0_g‘𝑅))
99	97, 32, 98	syl2anc 583	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑦 ≠ (0_g‘𝑅))
100	6, 15, 12	nmrpcl 24503	. . . . . . . . . . . 12 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝑦 ∈ 𝑋 ∧ 𝑦 ≠ (0_g‘𝑅)) → (𝑁‘𝑦) ∈ ℝ⁺)
101	25, 33, 99, 100	syl3anc 1369	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝑦) ∈ ℝ⁺)
102	96, 101	rpmulcld 13050	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · (𝑁‘𝑦)) ∈ ℝ⁺)
103	102	rpred 13034	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · (𝑁‘𝑦)) ∈ ℝ)
104	103	recnd 11258	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · (𝑁‘𝑦)) ∈ ℂ)
105	102	rpne0d 13039	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · (𝑁‘𝑦)) ≠ 0)
106	95, 104, 52, 105	divmuld 12028	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘(𝑦(-_g‘𝑅)𝐴)) / ((𝑁‘𝐴) · (𝑁‘𝑦))) = (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))) ↔ (((𝑁‘𝐴) · (𝑁‘𝑦)) · (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦)))) = (𝑁‘(𝑦(-_g‘𝑅)𝐴))))
107	90, 106	mpbird 257	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘(𝑦(-_g‘𝑅)𝐴)) / ((𝑁‘𝐴) · (𝑁‘𝑦))) = (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))))
108		nrginvrcn.d	. . . . . . . . 9 ⊢ 𝐷 = (dist‘𝑅)
109	15, 6, 47, 108	ngpdsr 24488	. . . . . . . 8 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → (𝐴𝐷𝑦) = (𝑁‘(𝑦(-_g‘𝑅)𝐴)))
110	25, 28, 33, 109	syl3anc 1369	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) = (𝑁‘(𝑦(-_g‘𝑅)𝐴)))
111	110	oveq1d 7429	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐴𝐷𝑦) / ((𝑁‘𝐴) · (𝑁‘𝑦))) = ((𝑁‘(𝑦(-_g‘𝑅)𝐴)) / ((𝑁‘𝐴) · (𝑁‘𝑦))))
112	15, 6, 47, 108	ngpds 24487	. . . . . . 7 ⊢ ((𝑅 ∈ NrmGrp ∧ (𝐼‘𝐴) ∈ 𝑋 ∧ (𝐼‘𝑦) ∈ 𝑋) → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) = (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))))
113	25, 44, 46, 112	syl3anc 1369	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) = (𝑁‘((𝐼‘𝐴)(-_g‘𝑅)(𝐼‘𝑦))))
114	107, 111, 113	3eqtr4rd 2778	. . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) = ((𝐴𝐷𝑦) / ((𝑁‘𝐴) · (𝑁‘𝑦))))
115	110, 94	eqeltrd 2828	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) ∈ ℝ)
116	24	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 ∈ ℝ⁺)
117	116	rpred 13034	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 ∈ ℝ)
118	18	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝐵 ∈ ℝ⁺)
119	118	rpred 13034	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝐵 ∈ ℝ)
120	103, 119	remulcld 11260	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵) ∈ ℝ)
121		simprr 772	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) < 𝑇)
122	19	adantr 480	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · 𝐵) ∈ ℝ⁺)
123	96	rphalfcld 13046	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) / 2) ∈ ℝ⁺)
124	122, 123	rpmulcld 13050	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)) ∈ ℝ⁺)
125	124	rpred 13034	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)) ∈ ℝ)
126		1re 11230	. . . . . . . . . . 11 ⊢ 1 ∈ ℝ
127	122	rpred 13034	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) · 𝐵) ∈ ℝ)
128		min2 13187	. . . . . . . . . . 11 ⊢ ((1 ∈ ℝ ∧ ((𝑁‘𝐴) · 𝐵) ∈ ℝ) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ ((𝑁‘𝐴) · 𝐵))
129	126, 127, 128	sylancr 586	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ ((𝑁‘𝐴) · 𝐵))
130	21	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ∈ ℝ⁺)
131	130	rpred 13034	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ∈ ℝ)
132	131, 127, 123	lemul1d 13077	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ ((𝑁‘𝐴) · 𝐵) ↔ (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2)) ≤ (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2))))
133	129, 132	mpbid 231	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2)) ≤ (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)))
134	1, 133	eqbrtrid 5177	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 ≤ (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)))
135	123	rpred 13034	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) / 2) ∈ ℝ)
136	31	2halvesd 12474	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) / 2) + ((𝑁‘𝐴) / 2)) = (𝑁‘𝐴))
137	30, 35	resubcld 11658	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) − (𝑁‘𝑦)) ∈ ℝ)
138	6, 15, 47	nm2dif 24508	. . . . . . . . . . . . . . . 16 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → ((𝑁‘𝐴) − (𝑁‘𝑦)) ≤ (𝑁‘(𝐴(-_g‘𝑅)𝑦)))
139	25, 28, 33, 138	syl3anc 1369	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) − (𝑁‘𝑦)) ≤ (𝑁‘(𝐴(-_g‘𝑅)𝑦)))
140	15, 6, 47, 108	ngpds 24487	. . . . . . . . . . . . . . . 16 ⊢ ((𝑅 ∈ NrmGrp ∧ 𝐴 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋) → (𝐴𝐷𝑦) = (𝑁‘(𝐴(-_g‘𝑅)𝑦)))
141	25, 28, 33, 140	syl3anc 1369	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) = (𝑁‘(𝐴(-_g‘𝑅)𝑦)))
142	139, 141	breqtrrd 5170	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) − (𝑁‘𝑦)) ≤ (𝐴𝐷𝑦))
143		min1 13186	. . . . . . . . . . . . . . . . . . 19 ⊢ ((1 ∈ ℝ ∧ ((𝑁‘𝐴) · 𝐵) ∈ ℝ) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ 1)
144	126, 127, 143	sylancr 586	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ 1)
145		1red 11231	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 1 ∈ ℝ)
146	131, 145, 123	lemul1d 13077	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) ≤ 1 ↔ (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2)) ≤ (1 · ((𝑁‘𝐴) / 2))))
147	144, 146	mpbid 231	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (if(1 ≤ ((𝑁‘𝐴) · 𝐵), 1, ((𝑁‘𝐴) · 𝐵)) · ((𝑁‘𝐴) / 2)) ≤ (1 · ((𝑁‘𝐴) / 2)))
148	1, 147	eqbrtrid 5177	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 ≤ (1 · ((𝑁‘𝐴) / 2)))
149	135	recnd 11258	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) / 2) ∈ ℂ)
150	149	mullidd 11248	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (1 · ((𝑁‘𝐴) / 2)) = ((𝑁‘𝐴) / 2))
151	148, 150	breqtrd 5168	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 ≤ ((𝑁‘𝐴) / 2))
152	115, 117, 135, 121, 151	ltletrd 11390	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) < ((𝑁‘𝐴) / 2))
153	137, 115, 135, 142, 152	lelttrd 11388	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) − (𝑁‘𝑦)) < ((𝑁‘𝐴) / 2))
154	30, 35, 135	ltsubadd2d 11828	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) − (𝑁‘𝑦)) < ((𝑁‘𝐴) / 2) ↔ (𝑁‘𝐴) < ((𝑁‘𝑦) + ((𝑁‘𝐴) / 2))))
155	153, 154	mpbid 231	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝑁‘𝐴) < ((𝑁‘𝑦) + ((𝑁‘𝐴) / 2)))
156	136, 155	eqbrtrd 5164	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) / 2) + ((𝑁‘𝐴) / 2)) < ((𝑁‘𝑦) + ((𝑁‘𝐴) / 2)))
157	135, 35, 135	ltadd1d 11823	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) / 2) < (𝑁‘𝑦) ↔ (((𝑁‘𝐴) / 2) + ((𝑁‘𝐴) / 2)) < ((𝑁‘𝑦) + ((𝑁‘𝐴) / 2))))
158	156, 157	mpbird 257	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝑁‘𝐴) / 2) < (𝑁‘𝑦))
159	135, 35, 122, 158	ltmul2dd 13090	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)) < (((𝑁‘𝐴) · 𝐵) · (𝑁‘𝑦)))
160	119	recnd 11258	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝐵 ∈ ℂ)
161	31, 36, 160	mul32d 11440	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵) = (((𝑁‘𝐴) · 𝐵) · (𝑁‘𝑦)))
162	159, 161	breqtrrd 5170	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝑁‘𝐴) · 𝐵) · ((𝑁‘𝐴) / 2)) < (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵))
163	117, 125, 120, 134, 162	lelttrd 11388	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → 𝑇 < (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵))
164	115, 117, 120, 121, 163	lttrd 11391	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (𝐴𝐷𝑦) < (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵))
165	115, 119, 102	ltdivmuld 13085	. . . . . 6 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → (((𝐴𝐷𝑦) / ((𝑁‘𝐴) · (𝑁‘𝑦))) < 𝐵 ↔ (𝐴𝐷𝑦) < (((𝑁‘𝐴) · (𝑁‘𝑦)) · 𝐵)))
166	164, 165	mpbird 257	. . . . 5 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐴𝐷𝑦) / ((𝑁‘𝐴) · (𝑁‘𝑦))) < 𝐵)
167	114, 166	eqbrtrd 5164	. . . 4 ⊢ ((𝜑 ∧ (𝑦 ∈ 𝑈 ∧ (𝐴𝐷𝑦) < 𝑇)) → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵)
168	167	expr 456	. . 3 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑈) → ((𝐴𝐷𝑦) < 𝑇 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵))
169	168	ralrimiva 3141	. 2 ⊢ (𝜑 → ∀𝑦 ∈ 𝑈 ((𝐴𝐷𝑦) < 𝑇 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵))
170		breq2 5146	. . 3 ⊢ (𝑥 = 𝑇 → ((𝐴𝐷𝑦) < 𝑥 ↔ (𝐴𝐷𝑦) < 𝑇))
171	170	rspceaimv 3613	. 2 ⊢ ((𝑇 ∈ ℝ⁺ ∧ ∀𝑦 ∈ 𝑈 ((𝐴𝐷𝑦) < 𝑇 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵)) → ∃𝑥 ∈ ℝ⁺ ∀𝑦 ∈ 𝑈 ((𝐴𝐷𝑦) < 𝑥 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵))
172	24, 169, 171	syl2anc 583	1 ⊢ (𝜑 → ∃𝑥 ∈ ℝ⁺ ∀𝑦 ∈ 𝑈 ((𝐴𝐷𝑦) < 𝑥 → ((𝐼‘𝐴)𝐷(𝐼‘𝑦)) < 𝐵))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ≠ wne 2935 ∀wral 3056 ∃wrex 3065 ifcif 4524 class class class wbr 5142 ‘cfv 6542 (class class class)co 7414 ℝcr 11123 1c1 11125 + caddc 11127 · cmul 11129 < clt 11264 ≤ cle 11265 − cmin 11460 / cdiv 11887 2c2 12283 ℝ⁺crp 12992 Basecbs 17165 ._rcmulr 17219 distcds 17227 0_gc0g 17406 Grpcgrp 18875 -_gcsg 18877 1_rcur 20105 Ringcrg 20157 Unitcui 20276 inv_rcinvr 20308 NzRingcnzr 20433 normcnm 24459 NrmGrpcngp 24460 NrmRingcnrg 24462

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2164 ax-ext 2698 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7732 ax-cnex 11180 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 ax-pre-mulgt0 11201 ax-pre-sup 11202

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2936 df-nel 3042 df-ral 3057 df-rex 3066 df-rmo 3371 df-reu 3372 df-rab 3428 df-v 3471 df-sbc 3775 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3963 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-iun 4993 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7863 df-1st 7985 df-2nd 7986 df-tpos 8223 df-frecs 8278 df-wrecs 8309 df-recs 8383 df-rdg 8422 df-1o 8478 df-er 8716 df-map 8836 df-en 8954 df-dom 8955 df-sdom 8956 df-fin 8957 df-sup 9451 df-inf 9452 df-pnf 11266 df-mnf 11267 df-xr 11268 df-ltxr 11269 df-le 11270 df-sub 11462 df-neg 11463 df-div 11888 df-nn 12229 df-2 12291 df-3 12292 df-4 12293 df-5 12294 df-6 12295 df-7 12296 df-8 12297 df-9 12298 df-n0 12489 df-z 12575 df-dec 12694 df-uz 12839 df-q 12949 df-rp 12993 df-xneg 13110 df-xadd 13111 df-xmul 13112 df-fz 13503 df-seq 13985 df-exp 14045 df-cj 15064 df-re 15065 df-im 15066 df-sqrt 15200 df-abs 15201 df-struct 17101 df-sets 17118 df-slot 17136 df-ndx 17148 df-base 17166 df-ress 17195 df-plusg 17231 df-mulr 17232 df-tset 17237 df-ple 17238 df-ds 17240 df-0g 17408 df-topgen 17410 df-xrs 17469 df-mgm 18585 df-sgrp 18664 df-mnd 18680 df-grp 18878 df-minusg 18879 df-sbg 18880 df-cmn 19721 df-abl 19722 df-mgp 20059 df-rng 20077 df-ur 20106 df-ring 20159 df-oppr 20255 df-dvdsr 20278 df-unit 20279 df-invr 20309 df-nzr 20434 df-abv 20679 df-psmet 21251 df-xmet 21252 df-met 21253 df-bl 21254 df-mopn 21255 df-top 22770 df-topon 22787 df-topsp 22809 df-bases 22823 df-xms 24200 df-ms 24201 df-nm 24465 df-ngp 24466 df-nrg 24468

This theorem is referenced by: nrginvrcn 24583

W3C validator