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Theorem nmoleub 23629

Description: The operator norm, defined as an infimum of upper bounds, can also be defined as a supremum of norms of 𝐹(𝑥) away from zero. (Contributed by Mario Carneiro, 18-Oct-2015.)

**Hypotheses**
Ref	Expression
nmofval.1	⊢ 𝑁 = (𝑆 normOp 𝑇)
nmoi.2	⊢ 𝑉 = (Base‘𝑆)
nmoi.3	⊢ 𝐿 = (norm‘𝑆)
nmoi.4	⊢ 𝑀 = (norm‘𝑇)
nmoi2.z	⊢ 0 = (0_g‘𝑆)
nmoleub.1	⊢ (𝜑 → 𝑆 ∈ NrmGrp)
nmoleub.2	⊢ (𝜑 → 𝑇 ∈ NrmGrp)
nmoleub.3	⊢ (𝜑 → 𝐹 ∈ (𝑆 GrpHom 𝑇))
nmoleub.4	⊢ (𝜑 → 𝐴 ∈ ℝ^*)
nmoleub.5	⊢ (𝜑 → 0 ≤ 𝐴)

**Assertion**
Ref	Expression
nmoleub	⊢ (𝜑 → ((𝑁‘𝐹) ≤ 𝐴 ↔ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)))

Distinct variable groups: 𝑥,𝐿 𝑥,𝑀 𝑥,𝑆 𝑥,𝑇 𝑥,𝐴 𝑥,𝐹 𝜑,𝑥 𝑥,𝑉 𝑥,𝑁 Allowed substitution hint: 0 (𝑥)

**Proof of Theorem nmoleub**
Step	Hyp	Ref	Expression
1		nmoleub.2	. . . . . . . . 9 ⊢ (𝜑 → 𝑇 ∈ NrmGrp)
2	1	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → 𝑇 ∈ NrmGrp)
3		nmoleub.3	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹 ∈ (𝑆 GrpHom 𝑇))
4		nmoi.2	. . . . . . . . . . . 12 ⊢ 𝑉 = (Base‘𝑆)
5		eqid 2737	. . . . . . . . . . . 12 ⊢ (Base‘𝑇) = (Base‘𝑇)
6	4, 5	ghmf 18626	. . . . . . . . . . 11 ⊢ (𝐹 ∈ (𝑆 GrpHom 𝑇) → 𝐹:𝑉⟶(Base‘𝑇))
7	3, 6	syl 17	. . . . . . . . . 10 ⊢ (𝜑 → 𝐹:𝑉⟶(Base‘𝑇))
8	7	ad2antrr 726	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → 𝐹:𝑉⟶(Base‘𝑇))
9		simprl 771	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → 𝑥 ∈ 𝑉)
10		ffvelrn 6902	. . . . . . . . 9 ⊢ ((𝐹:𝑉⟶(Base‘𝑇) ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ (Base‘𝑇))
11	8, 9, 10	syl2anc 587	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝐹‘𝑥) ∈ (Base‘𝑇))
12		nmoi.4	. . . . . . . . 9 ⊢ 𝑀 = (norm‘𝑇)
13	5, 12	nmcl 23514	. . . . . . . 8 ⊢ ((𝑇 ∈ NrmGrp ∧ (𝐹‘𝑥) ∈ (Base‘𝑇)) → (𝑀‘(𝐹‘𝑥)) ∈ ℝ)
14	2, 11, 13	syl2anc 587	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝑀‘(𝐹‘𝑥)) ∈ ℝ)
15		nmoleub.1	. . . . . . . . 9 ⊢ (𝜑 → 𝑆 ∈ NrmGrp)
16	15	adantr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) → 𝑆 ∈ NrmGrp)
17		nmoi.3	. . . . . . . . . 10 ⊢ 𝐿 = (norm‘𝑆)
18		nmoi2.z	. . . . . . . . . 10 ⊢ 0 = (0_g‘𝑆)
19	4, 17, 18	nmrpcl 23518	. . . . . . . . 9 ⊢ ((𝑆 ∈ NrmGrp ∧ 𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 ) → (𝐿‘𝑥) ∈ ℝ⁺)
20	19	3expb 1122	. . . . . . . 8 ⊢ ((𝑆 ∈ NrmGrp ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝐿‘𝑥) ∈ ℝ⁺)
21	16, 20	sylan 583	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝐿‘𝑥) ∈ ℝ⁺)
22	14, 21	rerpdivcld 12659	. . . . . 6 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ∈ ℝ)
23	22	rexrd 10883	. . . . 5 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ∈ ℝ^*)
24		nmofval.1	. . . . . . . 8 ⊢ 𝑁 = (𝑆 normOp 𝑇)
25	24	nmocl 23618	. . . . . . 7 ⊢ ((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp ∧ 𝐹 ∈ (𝑆 GrpHom 𝑇)) → (𝑁‘𝐹) ∈ ℝ^*)
26	15, 1, 3, 25	syl3anc 1373	. . . . . 6 ⊢ (𝜑 → (𝑁‘𝐹) ∈ ℝ^*)
27	26	ad2antrr 726	. . . . 5 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝑁‘𝐹) ∈ ℝ^*)
28		nmoleub.4	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ ℝ^*)
29	28	ad2antrr 726	. . . . 5 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → 𝐴 ∈ ℝ^*)
30	15, 1, 3	3jca 1130	. . . . . . 7 ⊢ (𝜑 → (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp ∧ 𝐹 ∈ (𝑆 GrpHom 𝑇)))
31	30	adantr 484	. . . . . 6 ⊢ ((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) → (𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp ∧ 𝐹 ∈ (𝑆 GrpHom 𝑇)))
32	24, 4, 17, 12, 18	nmoi2 23628	. . . . . 6 ⊢ (((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp ∧ 𝐹 ∈ (𝑆 GrpHom 𝑇)) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ (𝑁‘𝐹))
33	31, 32	sylan 583	. . . . 5 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ (𝑁‘𝐹))
34		simplr 769	. . . . 5 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → (𝑁‘𝐹) ≤ 𝐴)
35	23, 27, 29, 33, 34	xrletrd 12752	. . . 4 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ (𝑥 ∈ 𝑉 ∧ 𝑥 ≠ 0 )) → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)
36	35	expr 460	. . 3 ⊢ (((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) ∧ 𝑥 ∈ 𝑉) → (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴))
37	36	ralrimiva 3105	. 2 ⊢ ((𝜑 ∧ (𝑁‘𝐹) ≤ 𝐴) → ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴))
38		0le0 11931	. . . . . . . . . . 11 ⊢ 0 ≤ 0
39		simpllr 776	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → 𝐴 ∈ ℝ)
40	39	recnd 10861	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → 𝐴 ∈ ℂ)
41	40	mul01d 11031	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝐴 · 0) = 0)
42	38, 41	breqtrrid 5091	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → 0 ≤ (𝐴 · 0))
43		fveq2 6717	. . . . . . . . . . . . 13 ⊢ (𝑥 = 0 → (𝐹‘𝑥) = (𝐹‘ 0 ))
44	3	ad2antrr 726	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → 𝐹 ∈ (𝑆 GrpHom 𝑇))
45		eqid 2737	. . . . . . . . . . . . . . 15 ⊢ (0_g‘𝑇) = (0_g‘𝑇)
46	18, 45	ghmid 18628	. . . . . . . . . . . . . 14 ⊢ (𝐹 ∈ (𝑆 GrpHom 𝑇) → (𝐹‘ 0 ) = (0_g‘𝑇))
47	44, 46	syl 17	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → (𝐹‘ 0 ) = (0_g‘𝑇))
48	43, 47	sylan9eqr 2800	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝐹‘𝑥) = (0_g‘𝑇))
49	48	fveq2d 6721	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝑀‘(𝐹‘𝑥)) = (𝑀‘(0_g‘𝑇)))
50	1	ad3antrrr 730	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → 𝑇 ∈ NrmGrp)
51	12, 45	nm0 23527	. . . . . . . . . . . 12 ⊢ (𝑇 ∈ NrmGrp → (𝑀‘(0_g‘𝑇)) = 0)
52	50, 51	syl 17	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝑀‘(0_g‘𝑇)) = 0)
53	49, 52	eqtrd 2777	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝑀‘(𝐹‘𝑥)) = 0)
54		fveq2 6717	. . . . . . . . . . . 12 ⊢ (𝑥 = 0 → (𝐿‘𝑥) = (𝐿‘ 0 ))
55	15	ad2antrr 726	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → 𝑆 ∈ NrmGrp)
56	17, 18	nm0 23527	. . . . . . . . . . . . 13 ⊢ (𝑆 ∈ NrmGrp → (𝐿‘ 0 ) = 0)
57	55, 56	syl 17	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → (𝐿‘ 0 ) = 0)
58	54, 57	sylan9eqr 2800	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝐿‘𝑥) = 0)
59	58	oveq2d 7229	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝐴 · (𝐿‘𝑥)) = (𝐴 · 0))
60	42, 53, 59	3brtr4d 5085	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥)))
61	60	a1d 25	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 = 0 ) → ((𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴) → (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
62		simpr 488	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → 𝑥 ≠ 0 )
63	1	ad2antrr 726	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → 𝑇 ∈ NrmGrp)
64	7	adantr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 𝐹:𝑉⟶(Base‘𝑇))
65	64, 10	sylan 583	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ (Base‘𝑇))
66	63, 65, 13	syl2anc 587	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → (𝑀‘(𝐹‘𝑥)) ∈ ℝ)
67	66	adantr 484	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → (𝑀‘(𝐹‘𝑥)) ∈ ℝ)
68		simpllr 776	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → 𝐴 ∈ ℝ)
69	15	adantr 484	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 𝑆 ∈ NrmGrp)
70	19	3expa 1120	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ NrmGrp ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → (𝐿‘𝑥) ∈ ℝ⁺)
71	69, 70	sylanl1 680	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → (𝐿‘𝑥) ∈ ℝ⁺)
72	67, 68, 71	ledivmul2d 12682	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → (((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴 ↔ (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
73	72	biimpd 232	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → (((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴 → (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
74	62, 73	embantd 59	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) ∧ 𝑥 ≠ 0 ) → ((𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴) → (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
75	61, 74	pm2.61dane 3029	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ 𝑥 ∈ 𝑉) → ((𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴) → (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
76	75	ralimdva 3100	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → (∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴) → ∀𝑥 ∈ 𝑉 (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥))))
77	1	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 𝑇 ∈ NrmGrp)
78	3	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 𝐹 ∈ (𝑆 GrpHom 𝑇))
79		simpr 488	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 𝐴 ∈ ℝ)
80		nmoleub.5	. . . . . . . 8 ⊢ (𝜑 → 0 ≤ 𝐴)
81	80	adantr 484	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → 0 ≤ 𝐴)
82	24, 4, 17, 12	nmolb 23615	. . . . . . 7 ⊢ (((𝑆 ∈ NrmGrp ∧ 𝑇 ∈ NrmGrp ∧ 𝐹 ∈ (𝑆 GrpHom 𝑇)) ∧ 𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (∀𝑥 ∈ 𝑉 (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥)) → (𝑁‘𝐹) ≤ 𝐴))
83	69, 77, 78, 79, 81, 82	syl311anc 1386	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → (∀𝑥 ∈ 𝑉 (𝑀‘(𝐹‘𝑥)) ≤ (𝐴 · (𝐿‘𝑥)) → (𝑁‘𝐹) ≤ 𝐴))
84	76, 83	syld 47	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ∈ ℝ) → (∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴) → (𝑁‘𝐹) ≤ 𝐴))
85	84	imp 410	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ∈ ℝ) ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) → (𝑁‘𝐹) ≤ 𝐴)
86	85	an32s 652	. . 3 ⊢ (((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) ∧ 𝐴 ∈ ℝ) → (𝑁‘𝐹) ≤ 𝐴)
87	26	ad2antrr 726	. . . . 5 ⊢ (((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) ∧ 𝐴 = +∞) → (𝑁‘𝐹) ∈ ℝ^*)
88		pnfge 12722	. . . . 5 ⊢ ((𝑁‘𝐹) ∈ ℝ^* → (𝑁‘𝐹) ≤ +∞)
89	87, 88	syl 17	. . . 4 ⊢ (((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) ∧ 𝐴 = +∞) → (𝑁‘𝐹) ≤ +∞)
90		simpr 488	. . . 4 ⊢ (((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) ∧ 𝐴 = +∞) → 𝐴 = +∞)
91	89, 90	breqtrrd 5081	. . 3 ⊢ (((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) ∧ 𝐴 = +∞) → (𝑁‘𝐹) ≤ 𝐴)
92		ge0nemnf 12763	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ^* ∧ 0 ≤ 𝐴) → 𝐴 ≠ -∞)
93	28, 80, 92	syl2anc 587	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ -∞)
94	28, 93	jca 515	. . . . 5 ⊢ (𝜑 → (𝐴 ∈ ℝ^* ∧ 𝐴 ≠ -∞))
95		xrnemnf 12709	. . . . 5 ⊢ ((𝐴 ∈ ℝ^* ∧ 𝐴 ≠ -∞) ↔ (𝐴 ∈ ℝ ∨ 𝐴 = +∞))
96	94, 95	sylib 221	. . . 4 ⊢ (𝜑 → (𝐴 ∈ ℝ ∨ 𝐴 = +∞))
97	96	adantr 484	. . 3 ⊢ ((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) → (𝐴 ∈ ℝ ∨ 𝐴 = +∞))
98	86, 91, 97	mpjaodan 959	. 2 ⊢ ((𝜑 ∧ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)) → (𝑁‘𝐹) ≤ 𝐴)
99	37, 98	impbida 801	1 ⊢ (𝜑 → ((𝑁‘𝐹) ≤ 𝐴 ↔ ∀𝑥 ∈ 𝑉 (𝑥 ≠ 0 → ((𝑀‘(𝐹‘𝑥)) / (𝐿‘𝑥)) ≤ 𝐴)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∨ wo 847 ∧ w3a 1089 = wceq 1543 ∈ wcel 2110 ≠ wne 2940 ∀wral 3061 class class class wbr 5053 ⟶wf 6376 ‘cfv 6380 (class class class)co 7213 ℝcr 10728 0cc0 10729 · cmul 10734 +∞cpnf 10864 -∞cmnf 10865 ℝ^*cxr 10866 ≤ cle 10868 / cdiv 11489 ℝ⁺crp 12586 Basecbs 16760 0_gc0g 16944 GrpHom cghm 18619 normcnm 23474 NrmGrpcngp 23475 normOp cnmo 23603

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2158 ax-12 2175 ax-ext 2708 ax-rep 5179 ax-sep 5192 ax-nul 5199 ax-pow 5258 ax-pr 5322 ax-un 7523 ax-cnex 10785 ax-resscn 10786 ax-1cn 10787 ax-icn 10788 ax-addcl 10789 ax-addrcl 10790 ax-mulcl 10791 ax-mulrcl 10792 ax-mulcom 10793 ax-addass 10794 ax-mulass 10795 ax-distr 10796 ax-i2m1 10797 ax-1ne0 10798 ax-1rid 10799 ax-rnegex 10800 ax-rrecex 10801 ax-cnre 10802 ax-pre-lttri 10803 ax-pre-lttrn 10804 ax-pre-ltadd 10805 ax-pre-mulgt0 10806 ax-pre-sup 10807

This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2071 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3066 df-rex 3067 df-reu 3068 df-rmo 3069 df-rab 3070 df-v 3410 df-sbc 3695 df-csb 3812 df-dif 3869 df-un 3871 df-in 3873 df-ss 3883 df-pss 3885 df-nul 4238 df-if 4440 df-pw 4515 df-sn 4542 df-pr 4544 df-tp 4546 df-op 4548 df-uni 4820 df-iun 4906 df-br 5054 df-opab 5116 df-mpt 5136 df-tr 5162 df-id 5455 df-eprel 5460 df-po 5468 df-so 5469 df-fr 5509 df-we 5511 df-xp 5557 df-rel 5558 df-cnv 5559 df-co 5560 df-dm 5561 df-rn 5562 df-res 5563 df-ima 5564 df-pred 6160 df-ord 6216 df-on 6217 df-lim 6218 df-suc 6219 df-iota 6338 df-fun 6382 df-fn 6383 df-f 6384 df-f1 6385 df-fo 6386 df-f1o 6387 df-fv 6388 df-riota 7170 df-ov 7216 df-oprab 7217 df-mpo 7218 df-om 7645 df-1st 7761 df-2nd 7762 df-wrecs 8047 df-recs 8108 df-rdg 8146 df-er 8391 df-map 8510 df-en 8627 df-dom 8628 df-sdom 8629 df-sup 9058 df-inf 9059 df-pnf 10869 df-mnf 10870 df-xr 10871 df-ltxr 10872 df-le 10873 df-sub 11064 df-neg 11065 df-div 11490 df-nn 11831 df-2 11893 df-n0 12091 df-z 12177 df-uz 12439 df-q 12545 df-rp 12587 df-xneg 12704 df-xadd 12705 df-xmul 12706 df-ico 12941 df-0g 16946 df-topgen 16948 df-mgm 18114 df-sgrp 18163 df-mnd 18174 df-grp 18368 df-ghm 18620 df-psmet 20355 df-xmet 20356 df-met 20357 df-bl 20358 df-mopn 20359 df-top 21791 df-topon 21808 df-topsp 21830 df-bases 21843 df-xms 23218 df-ms 23219 df-nm 23480 df-ngp 23481 df-nmo 23606 df-nghm 23607

This theorem is referenced by: (None)

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