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Theorem expcnv 15806

Description: A sequence of powers of a complex number 𝐴 with absolute value smaller than 1 converges to zero. (Contributed by NM, 8-May-2006.) (Proof shortened by Mario Carneiro, 26-Apr-2014.)

**Hypotheses**
Ref	Expression
expcnv.1	⊢ (𝜑 → 𝐴 ∈ ℂ)
expcnv.2	⊢ (𝜑 → (abs‘𝐴) < 1)

**Assertion**
Ref	Expression
expcnv	⊢ (𝜑 → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)

Distinct variable group: 𝐴,𝑛 Allowed substitution hint: 𝜑(𝑛)

Proof of Theorem expcnv Dummy variable 𝑘 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		nnuz 12861	. . 3 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 12589	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 1 ∈ ℤ)
3		nn0ex 12474	. . . . 5 ⊢ ℕ₀ ∈ V
4	3	mptex 7221	. . . 4 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V
5	4	a1i 11	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V)
6		0cnd 11203	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 0 ∈ ℂ)
7		nnnn0 12475	. . . . . 6 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℕ₀)
8		oveq2 7413	. . . . . . 7 ⊢ (𝑛 = 𝑘 → (𝐴↑𝑛) = (𝐴↑𝑘))
9		eqid 2732	. . . . . . 7 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) = (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))
10		ovex 7438	. . . . . . 7 ⊢ (𝐴↑𝑘) ∈ V
11	8, 9, 10	fvmpt 6995	. . . . . 6 ⊢ (𝑘 ∈ ℕ₀ → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (𝐴↑𝑘))
12	7, 11	syl 17	. . . . 5 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (𝐴↑𝑘))
13		simpr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 0) → 𝐴 = 0)
14	13	oveq1d 7420	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝐴↑𝑘) = (0↑𝑘))
15	12, 14	sylan9eqr 2794	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (0↑𝑘))
16		0exp 14059	. . . . 5 ⊢ (𝑘 ∈ ℕ → (0↑𝑘) = 0)
17	16	adantl 482	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → (0↑𝑘) = 0)
18	15, 17	eqtrd 2772	. . 3 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = 0)
19	1, 2, 5, 6, 18	climconst 15483	. 2 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
20		1zzd 12589	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 1 ∈ ℤ)
21		expcnv.2	. . . . . . . . . 10 ⊢ (𝜑 → (abs‘𝐴) < 1)
22	21	adantr 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) < 1)
23		expcnv.1	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ∈ ℂ)
24		absrpcl 15231	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
25	23, 24	sylan 580	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
26	25	reclt1d 13025	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → ((abs‘𝐴) < 1 ↔ 1 < (1 / (abs‘𝐴))))
27	22, 26	mpbid 231	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 1 < (1 / (abs‘𝐴)))
28		1re 11210	. . . . . . . . 9 ⊢ 1 ∈ ℝ
29	25	rpreccld 13022	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ⁺)
30	29	rpred 13012	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ)
31		difrp 13008	. . . . . . . . 9 ⊢ ((1 ∈ ℝ ∧ (1 / (abs‘𝐴)) ∈ ℝ) → (1 < (1 / (abs‘𝐴)) ↔ ((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺))
32	28, 30, 31	sylancr 587	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 < (1 / (abs‘𝐴)) ↔ ((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺))
33	27, 32	mpbid 231	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → ((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺)
34	33	rpreccld 13022	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ⁺)
35	34	rpcnd 13014	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℂ)
36		divcnv 15795	. . . . 5 ⊢ ((1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℂ → (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛)) ⇝ 0)
37	35, 36	syl 17	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛)) ⇝ 0)
38		nnex 12214	. . . . . 6 ⊢ ℕ ∈ V
39	38	mptex 7221	. . . . 5 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V
40	39	a1i 11	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V)
41		oveq2 7413	. . . . . . 7 ⊢ (𝑛 = 𝑘 → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
42		eqid 2732	. . . . . . 7 ⊢ (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛)) = (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))
43		ovex 7438	. . . . . . 7 ⊢ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ V
44	41, 42, 43	fvmpt 6995	. . . . . 6 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
45	44	adantl 482	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
46	34	rpred 13012	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ)
47		nndivre 12249	. . . . . 6 ⊢ (((1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
48	46, 47	sylan 580	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
49	45, 48	eqeltrd 2833	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) ∈ ℝ)
50		oveq2 7413	. . . . . . . 8 ⊢ (𝑛 = 𝑘 → ((abs‘𝐴)↑𝑛) = ((abs‘𝐴)↑𝑘))
51		eqid 2732	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) = (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))
52		ovex 7438	. . . . . . . 8 ⊢ ((abs‘𝐴)↑𝑘) ∈ V
53	50, 51, 52	fvmpt 6995	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
54	53	adantl 482	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
55		nnz 12575	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
56		rpexpcl 14042	. . . . . . 7 ⊢ (((abs‘𝐴) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
57	25, 55, 56	syl2an 596	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
58	54, 57	eqeltrd 2833	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ⁺)
59	58	rpred 13012	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ)
60		nnrp 12981	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ⁺)
61		rpmulcl 12993	. . . . . . . 8 ⊢ ((((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺ ∧ 𝑘 ∈ ℝ⁺) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
62	33, 60, 61	syl2an 596	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
63	62	rpred 13012	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ)
64		peano2re 11383	. . . . . . . . . 10 ⊢ ((((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ → ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1) ∈ ℝ)
65	63, 64	syl 17	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1) ∈ ℝ)
66		rpexpcl 14042	. . . . . . . . . . 11 ⊢ (((1 / (abs‘𝐴)) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
67	29, 55, 66	syl2an 596	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
68	67	rpred 13012	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ)
69	63	lep1d 12141	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1))
70	30	adantr 481	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (1 / (abs‘𝐴)) ∈ ℝ)
71	7	adantl 482	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
72	29	rpge0d 13016	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 0 ≤ (1 / (abs‘𝐴)))
73	72	adantr 481	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ (1 / (abs‘𝐴)))
74		bernneq2 14189	. . . . . . . . . 10 ⊢ (((1 / (abs‘𝐴)) ∈ ℝ ∧ 𝑘 ∈ ℕ₀ ∧ 0 ≤ (1 / (abs‘𝐴))) → ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1) ≤ ((1 / (abs‘𝐴))↑𝑘))
75	70, 71, 73, 74	syl3anc 1371	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1) ≤ ((1 / (abs‘𝐴))↑𝑘))
76	63, 65, 68, 69, 75	letrd 11367	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((1 / (abs‘𝐴))↑𝑘))
77	25	rpcnne0d 13021	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → ((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0))
78		exprec 14065	. . . . . . . . . 10 ⊢ (((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0 ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
79	78	3expa 1118	. . . . . . . . 9 ⊢ ((((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0) ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
80	77, 55, 79	syl2an 596	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
81	76, 80	breqtrd 5173	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ (1 / ((abs‘𝐴)↑𝑘)))
82	62, 57, 81	lerec2d 13033	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
83	33	rpcnne0d 13021	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (((1 / (abs‘𝐴)) − 1) ∈ ℂ ∧ ((1 / (abs‘𝐴)) − 1) ≠ 0))
84		nncn 12216	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℂ)
85		nnne0 12242	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ≠ 0)
86	84, 85	jca 512	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℂ ∧ 𝑘 ≠ 0))
87		recdiv2 11923	. . . . . . 7 ⊢ (((((1 / (abs‘𝐴)) − 1) ∈ ℂ ∧ ((1 / (abs‘𝐴)) − 1) ≠ 0) ∧ (𝑘 ∈ ℂ ∧ 𝑘 ≠ 0)) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) = (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
88	83, 86, 87	syl2an 596	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) = (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
89	82, 88	breqtrrd 5175	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
90	89, 54, 45	3brtr4d 5179	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘))
91	58	rpge0d 13016	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘))
92	1, 20, 37, 40, 49, 59, 90, 91	climsqz2 15582	. . 3 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0)
93		1zzd 12589	. . . . 5 ⊢ (𝜑 → 1 ∈ ℤ)
94	4	a1i 11	. . . . 5 ⊢ (𝜑 → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V)
95	39	a1i 11	. . . . 5 ⊢ (𝜑 → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V)
96	7	adantl 482	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
97	96, 11	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (𝐴↑𝑘))
98		expcl 14041	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (𝐴↑𝑘) ∈ ℂ)
99	23, 7, 98	syl2an 596	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑𝑘) ∈ ℂ)
100	97, 99	eqeltrd 2833	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) ∈ ℂ)
101		absexp 15247	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
102	23, 7, 101	syl2an 596	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
103	97	fveq2d 6892	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)) = (abs‘(𝐴↑𝑘)))
104	53	adantl 482	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
105	102, 103, 104	3eqtr4rd 2783	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)))
106	1, 93, 94, 95, 100, 105	climabs0 15525	. . . 4 ⊢ (𝜑 → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0 ↔ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0))
107	106	biimpar 478	. . 3 ⊢ ((𝜑 ∧ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
108	92, 107	syldan 591	. 2 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
109	19, 108	pm2.61dane 3029	1 ⊢ (𝜑 → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 Vcvv 3474 class class class wbr 5147 ↦ cmpt 5230 ‘cfv 6540 (class class class)co 7405 ℂcc 11104 ℝcr 11105 0cc0 11106 1c1 11107 + caddc 11109 · cmul 11111 < clt 11244 ≤ cle 11245 − cmin 11440 / cdiv 11867 ℕcn 12208 ℕ₀cn0 12468 ℤcz 12554 ℝ⁺crp 12970 ↑cexp 14023 abscabs 15177 ⇝ cli 15424

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-er 8699 df-pm 8819 df-en 8936 df-dom 8937 df-sdom 8938 df-sup 9433 df-inf 9434 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-3 12272 df-n0 12469 df-z 12555 df-uz 12819 df-rp 12971 df-fl 13753 df-seq 13963 df-exp 14024 df-cj 15042 df-re 15043 df-im 15044 df-sqrt 15178 df-abs 15179 df-clim 15428 df-rlim 15429

This theorem is referenced by: explecnv 15807 geolim 15812 geo2lim 15817 iscmet3lem3 24798 mbfi1fseqlem6 25229 geomcau 36615 stoweidlem7 44709

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