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Theorem expcnv 15813

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 12866	. . 3 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 12594	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 1 ∈ ℤ)
3		nn0ex 12479	. . . . 5 ⊢ ℕ₀ ∈ V
4	3	mptex 7219	. . . 4 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V
5	4	a1i 11	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V)
6		0cnd 11208	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 0 ∈ ℂ)
7		nnnn0 12480	. . . . . 6 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℕ₀)
8		oveq2 7412	. . . . . . 7 ⊢ (𝑛 = 𝑘 → (𝐴↑𝑛) = (𝐴↑𝑘))
9		eqid 2726	. . . . . . 7 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) = (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))
10		ovex 7437	. . . . . . 7 ⊢ (𝐴↑𝑘) ∈ V
11	8, 9, 10	fvmpt 6991	. . . . . 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 484	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 0) → 𝐴 = 0)
14	13	oveq1d 7419	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝐴↑𝑘) = (0↑𝑘))
15	12, 14	sylan9eqr 2788	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (0↑𝑘))
16		0exp 14065	. . . . 5 ⊢ (𝑘 ∈ ℕ → (0↑𝑘) = 0)
17	16	adantl 481	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → (0↑𝑘) = 0)
18	15, 17	eqtrd 2766	. . 3 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = 0)
19	1, 2, 5, 6, 18	climconst 15490	. 2 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
20		1zzd 12594	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 1 ∈ ℤ)
21		expcnv.2	. . . . . . . . . 10 ⊢ (𝜑 → (abs‘𝐴) < 1)
22	21	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) < 1)
23		expcnv.1	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ∈ ℂ)
24		absrpcl 15238	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
25	23, 24	sylan 579	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
26	25	reclt1d 13032	. . . . . . . . 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 11215	. . . . . . . . 9 ⊢ 1 ∈ ℝ
29	25	rpreccld 13029	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ⁺)
30	29	rpred 13019	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ)
31		difrp 13015	. . . . . . . . 9 ⊢ ((1 ∈ ℝ ∧ (1 / (abs‘𝐴)) ∈ ℝ) → (1 < (1 / (abs‘𝐴)) ↔ ((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺))
32	28, 30, 31	sylancr 586	. . . . . . . 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 13029	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ⁺)
35	34	rpcnd 13021	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℂ)
36		divcnv 15802	. . . . 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 12219	. . . . . 6 ⊢ ℕ ∈ V
39	38	mptex 7219	. . . . 5 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V
40	39	a1i 11	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V)
41		oveq2 7412	. . . . . . 7 ⊢ (𝑛 = 𝑘 → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
42		eqid 2726	. . . . . . 7 ⊢ (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛)) = (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))
43		ovex 7437	. . . . . . 7 ⊢ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ V
44	41, 42, 43	fvmpt 6991	. . . . . 6 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
45	44	adantl 481	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
46	34	rpred 13019	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ)
47		nndivre 12254	. . . . . 6 ⊢ (((1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
48	46, 47	sylan 579	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
49	45, 48	eqeltrd 2827	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) ∈ ℝ)
50		oveq2 7412	. . . . . . . 8 ⊢ (𝑛 = 𝑘 → ((abs‘𝐴)↑𝑛) = ((abs‘𝐴)↑𝑘))
51		eqid 2726	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) = (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))
52		ovex 7437	. . . . . . . 8 ⊢ ((abs‘𝐴)↑𝑘) ∈ V
53	50, 51, 52	fvmpt 6991	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
54	53	adantl 481	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
55		nnz 12580	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
56		rpexpcl 14048	. . . . . . 7 ⊢ (((abs‘𝐴) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
57	25, 55, 56	syl2an 595	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
58	54, 57	eqeltrd 2827	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ⁺)
59	58	rpred 13019	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ)
60		nnrp 12988	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ⁺)
61		rpmulcl 13000	. . . . . . . 8 ⊢ ((((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺ ∧ 𝑘 ∈ ℝ⁺) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
62	33, 60, 61	syl2an 595	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
63	62	rpred 13019	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ)
64		peano2re 11388	. . . . . . . . . 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 14048	. . . . . . . . . . 11 ⊢ (((1 / (abs‘𝐴)) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
67	29, 55, 66	syl2an 595	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
68	67	rpred 13019	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ)
69	63	lep1d 12146	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1))
70	30	adantr 480	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (1 / (abs‘𝐴)) ∈ ℝ)
71	7	adantl 481	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
72	29	rpge0d 13023	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 0 ≤ (1 / (abs‘𝐴)))
73	72	adantr 480	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ (1 / (abs‘𝐴)))
74		bernneq2 14195	. . . . . . . . . 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 1368	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1) ≤ ((1 / (abs‘𝐴))↑𝑘))
76	63, 65, 68, 69, 75	letrd 11372	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((1 / (abs‘𝐴))↑𝑘))
77	25	rpcnne0d 13028	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → ((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0))
78		exprec 14071	. . . . . . . . . 10 ⊢ (((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0 ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
79	78	3expa 1115	. . . . . . . . 9 ⊢ ((((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0) ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
80	77, 55, 79	syl2an 595	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
81	76, 80	breqtrd 5167	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ (1 / ((abs‘𝐴)↑𝑘)))
82	62, 57, 81	lerec2d 13040	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
83	33	rpcnne0d 13028	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (((1 / (abs‘𝐴)) − 1) ∈ ℂ ∧ ((1 / (abs‘𝐴)) − 1) ≠ 0))
84		nncn 12221	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℂ)
85		nnne0 12247	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ≠ 0)
86	84, 85	jca 511	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℂ ∧ 𝑘 ≠ 0))
87		recdiv2 11928	. . . . . . 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 595	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) = (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
89	82, 88	breqtrrd 5169	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
90	89, 54, 45	3brtr4d 5173	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘))
91	58	rpge0d 13023	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘))
92	1, 20, 37, 40, 49, 59, 90, 91	climsqz2 15589	. . 3 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0)
93		1zzd 12594	. . . . 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 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
97	96, 11	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (𝐴↑𝑘))
98		expcl 14047	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (𝐴↑𝑘) ∈ ℂ)
99	23, 7, 98	syl2an 595	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑𝑘) ∈ ℂ)
100	97, 99	eqeltrd 2827	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) ∈ ℂ)
101		absexp 15254	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
102	23, 7, 101	syl2an 595	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
103	97	fveq2d 6888	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)) = (abs‘(𝐴↑𝑘)))
104	53	adantl 481	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
105	102, 103, 104	3eqtr4rd 2777	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)))
106	1, 93, 94, 95, 100, 105	climabs0 15532	. . . 4 ⊢ (𝜑 → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0 ↔ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0))
107	106	biimpar 477	. . 3 ⊢ ((𝜑 ∧ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
108	92, 107	syldan 590	. 2 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
109	19, 108	pm2.61dane 3023	1 ⊢ (𝜑 → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1533 ∈ wcel 2098 ≠ wne 2934 Vcvv 3468 class class class wbr 5141 ↦ cmpt 5224 ‘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 ℕcn 12213 ℕ₀cn0 12473 ℤcz 12559 ℝ⁺crp 12977 ↑cexp 14029 abscabs 15184 ⇝ cli 15431

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

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-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-2nd 7972 df-frecs 8264 df-wrecs 8295 df-recs 8369 df-rdg 8408 df-er 8702 df-pm 8822 df-en 8939 df-dom 8940 df-sdom 8941 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-n0 12474 df-z 12560 df-uz 12824 df-rp 12978 df-fl 13760 df-seq 13970 df-exp 14030 df-cj 15049 df-re 15050 df-im 15051 df-sqrt 15185 df-abs 15186 df-clim 15435 df-rlim 15436

This theorem is referenced by: explecnv 15814 geolim 15819 geo2lim 15824 iscmet3lem3 25168 mbfi1fseqlem6 25600 geomcau 37139 stoweidlem7 45277

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