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Theorem expcnv 15850

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 12903	. . 3 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 12631	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 1 ∈ ℤ)
3		nn0ex 12516	. . . . 5 ⊢ ℕ₀ ∈ V
4	3	mptex 7241	. . . 4 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V
5	4	a1i 11	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ∈ V)
6		0cnd 11245	. . 3 ⊢ ((𝜑 ∧ 𝐴 = 0) → 0 ∈ ℂ)
7		nnnn0 12517	. . . . . 6 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℕ₀)
8		oveq2 7434	. . . . . . 7 ⊢ (𝑛 = 𝑘 → (𝐴↑𝑛) = (𝐴↑𝑘))
9		eqid 2728	. . . . . . 7 ⊢ (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) = (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))
10		ovex 7459	. . . . . . 7 ⊢ (𝐴↑𝑘) ∈ V
11	8, 9, 10	fvmpt 7010	. . . . . 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 483	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 = 0) → 𝐴 = 0)
14	13	oveq1d 7441	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝐴↑𝑘) = (0↑𝑘))
15	12, 14	sylan9eqr 2790	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (0↑𝑘))
16		0exp 14102	. . . . 5 ⊢ (𝑘 ∈ ℕ → (0↑𝑘) = 0)
17	16	adantl 480	. . . 4 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → (0↑𝑘) = 0)
18	15, 17	eqtrd 2768	. . 3 ⊢ (((𝜑 ∧ 𝐴 = 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = 0)
19	1, 2, 5, 6, 18	climconst 15527	. 2 ⊢ ((𝜑 ∧ 𝐴 = 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
20		1zzd 12631	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 1 ∈ ℤ)
21		expcnv.2	. . . . . . . . . 10 ⊢ (𝜑 → (abs‘𝐴) < 1)
22	21	adantr 479	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) < 1)
23		expcnv.1	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ∈ ℂ)
24		absrpcl 15275	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
25	23, 24	sylan 578	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (abs‘𝐴) ∈ ℝ⁺)
26	25	reclt1d 13069	. . . . . . . . 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 11252	. . . . . . . . 9 ⊢ 1 ∈ ℝ
29	25	rpreccld 13066	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ⁺)
30	29	rpred 13056	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / (abs‘𝐴)) ∈ ℝ)
31		difrp 13052	. . . . . . . . 9 ⊢ ((1 ∈ ℝ ∧ (1 / (abs‘𝐴)) ∈ ℝ) → (1 < (1 / (abs‘𝐴)) ↔ ((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺))
32	28, 30, 31	sylancr 585	. . . . . . . 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 13066	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ⁺)
35	34	rpcnd 13058	. . . . 5 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℂ)
36		divcnv 15839	. . . . 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 12256	. . . . . 6 ⊢ ℕ ∈ V
39	38	mptex 7241	. . . . 5 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V
40	39	a1i 11	. . . 4 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ∈ V)
41		oveq2 7434	. . . . . . 7 ⊢ (𝑛 = 𝑘 → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
42		eqid 2728	. . . . . . 7 ⊢ (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛)) = (𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))
43		ovex 7459	. . . . . . 7 ⊢ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ V
44	41, 42, 43	fvmpt 7010	. . . . . 6 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
45	44	adantl 480	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) = ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
46	34	rpred 13056	. . . . . 6 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ)
47		nndivre 12291	. . . . . 6 ⊢ (((1 / ((1 / (abs‘𝐴)) − 1)) ∈ ℝ ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
48	46, 47	sylan 578	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) ∈ ℝ)
49	45, 48	eqeltrd 2829	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘) ∈ ℝ)
50		oveq2 7434	. . . . . . . 8 ⊢ (𝑛 = 𝑘 → ((abs‘𝐴)↑𝑛) = ((abs‘𝐴)↑𝑘))
51		eqid 2728	. . . . . . . 8 ⊢ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) = (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))
52		ovex 7459	. . . . . . . 8 ⊢ ((abs‘𝐴)↑𝑘) ∈ V
53	50, 51, 52	fvmpt 7010	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
54	53	adantl 480	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
55		nnz 12617	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
56		rpexpcl 14085	. . . . . . 7 ⊢ (((abs‘𝐴) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
57	25, 55, 56	syl2an 594	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ∈ ℝ⁺)
58	54, 57	eqeltrd 2829	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ⁺)
59	58	rpred 13056	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ∈ ℝ)
60		nnrp 13025	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ⁺)
61		rpmulcl 13037	. . . . . . . 8 ⊢ ((((1 / (abs‘𝐴)) − 1) ∈ ℝ⁺ ∧ 𝑘 ∈ ℝ⁺) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
62	33, 60, 61	syl2an 594	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ⁺)
63	62	rpred 13056	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ∈ ℝ)
64		peano2re 11425	. . . . . . . . . 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 14085	. . . . . . . . . . 11 ⊢ (((1 / (abs‘𝐴)) ∈ ℝ⁺ ∧ 𝑘 ∈ ℤ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
67	29, 55, 66	syl2an 594	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ⁺)
68	67	rpred 13056	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) ∈ ℝ)
69	63	lep1d 12183	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((((1 / (abs‘𝐴)) − 1) · 𝑘) + 1))
70	30	adantr 479	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (1 / (abs‘𝐴)) ∈ ℝ)
71	7	adantl 480	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
72	29	rpge0d 13060	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → 0 ≤ (1 / (abs‘𝐴)))
73	72	adantr 479	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ (1 / (abs‘𝐴)))
74		bernneq2 14232	. . . . . . . . . 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 11409	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ ((1 / (abs‘𝐴))↑𝑘))
77	25	rpcnne0d 13065	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → ((abs‘𝐴) ∈ ℂ ∧ (abs‘𝐴) ≠ 0))
78		exprec 14108	. . . . . . . . . 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 594	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / (abs‘𝐴))↑𝑘) = (1 / ((abs‘𝐴)↑𝑘)))
81	76, 80	breqtrd 5178	. . . . . . 7 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → (((1 / (abs‘𝐴)) − 1) · 𝑘) ≤ (1 / ((abs‘𝐴)↑𝑘)))
82	62, 57, 81	lerec2d 13077	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
83	33	rpcnne0d 13065	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (((1 / (abs‘𝐴)) − 1) ∈ ℂ ∧ ((1 / (abs‘𝐴)) − 1) ≠ 0))
84		nncn 12258	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℂ)
85		nnne0 12284	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → 𝑘 ≠ 0)
86	84, 85	jca 510	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℂ ∧ 𝑘 ≠ 0))
87		recdiv2 11965	. . . . . . 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 594	. . . . . 6 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘) = (1 / (((1 / (abs‘𝐴)) − 1) · 𝑘)))
89	82, 88	breqtrrd 5180	. . . . 5 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((abs‘𝐴)↑𝑘) ≤ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑘))
90	89, 54, 45	3brtr4d 5184	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((1 / ((1 / (abs‘𝐴)) − 1)) / 𝑛))‘𝑘))
91	58	rpge0d 13060	. . . 4 ⊢ (((𝜑 ∧ 𝐴 ≠ 0) ∧ 𝑘 ∈ ℕ) → 0 ≤ ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘))
92	1, 20, 37, 40, 49, 59, 90, 91	climsqz2 15626	. . 3 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0)
93		1zzd 12631	. . . . 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 480	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ₀)
97	96, 11	syl 17	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) = (𝐴↑𝑘))
98		expcl 14084	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (𝐴↑𝑘) ∈ ℂ)
99	23, 7, 98	syl2an 594	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑𝑘) ∈ ℂ)
100	97, 99	eqeltrd 2829	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘) ∈ ℂ)
101		absexp 15291	. . . . . . 7 ⊢ ((𝐴 ∈ ℂ ∧ 𝑘 ∈ ℕ₀) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
102	23, 7, 101	syl2an 594	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐴↑𝑘)) = ((abs‘𝐴)↑𝑘))
103	97	fveq2d 6906	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)) = (abs‘(𝐴↑𝑘)))
104	53	adantl 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = ((abs‘𝐴)↑𝑘))
105	102, 103, 104	3eqtr4rd 2779	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛))‘𝑘) = (abs‘((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛))‘𝑘)))
106	1, 93, 94, 95, 100, 105	climabs0 15569	. . . 4 ⊢ (𝜑 → ((𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0 ↔ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0))
107	106	biimpar 476	. . 3 ⊢ ((𝜑 ∧ (𝑛 ∈ ℕ ↦ ((abs‘𝐴)↑𝑛)) ⇝ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
108	92, 107	syldan 589	. 2 ⊢ ((𝜑 ∧ 𝐴 ≠ 0) → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)
109	19, 108	pm2.61dane 3026	1 ⊢ (𝜑 → (𝑛 ∈ ℕ₀ ↦ (𝐴↑𝑛)) ⇝ 0)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ≠ wne 2937 Vcvv 3473 class class class wbr 5152 ↦ cmpt 5235 ‘cfv 6553 (class class class)co 7426 ℂcc 11144 ℝcr 11145 0cc0 11146 1c1 11147 + caddc 11149 · cmul 11151 < clt 11286 ≤ cle 11287 − cmin 11482 / cdiv 11909 ℕcn 12250 ℕ₀cn0 12510 ℤcz 12596 ℝ⁺crp 13014 ↑cexp 14066 abscabs 15221 ⇝ cli 15468

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 2166 ax-ext 2699 ax-rep 5289 ax-sep 5303 ax-nul 5310 ax-pow 5369 ax-pr 5433 ax-un 7746 ax-cnex 11202 ax-resscn 11203 ax-1cn 11204 ax-icn 11205 ax-addcl 11206 ax-addrcl 11207 ax-mulcl 11208 ax-mulrcl 11209 ax-mulcom 11210 ax-addass 11211 ax-mulass 11212 ax-distr 11213 ax-i2m1 11214 ax-1ne0 11215 ax-1rid 11216 ax-rnegex 11217 ax-rrecex 11218 ax-cnre 11219 ax-pre-lttri 11220 ax-pre-lttrn 11221 ax-pre-ltadd 11222 ax-pre-mulgt0 11223 ax-pre-sup 11224

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2529 df-eu 2558 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2938 df-nel 3044 df-ral 3059 df-rex 3068 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3475 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4327 df-if 4533 df-pw 4608 df-sn 4633 df-pr 4635 df-op 4639 df-uni 4913 df-iun 5002 df-br 5153 df-opab 5215 df-mpt 5236 df-tr 5270 df-id 5580 df-eprel 5586 df-po 5594 df-so 5595 df-fr 5637 df-we 5639 df-xp 5688 df-rel 5689 df-cnv 5690 df-co 5691 df-dm 5692 df-rn 5693 df-res 5694 df-ima 5695 df-pred 6310 df-ord 6377 df-on 6378 df-lim 6379 df-suc 6380 df-iota 6505 df-fun 6555 df-fn 6556 df-f 6557 df-f1 6558 df-fo 6559 df-f1o 6560 df-fv 6561 df-riota 7382 df-ov 7429 df-oprab 7430 df-mpo 7431 df-om 7877 df-2nd 8000 df-frecs 8293 df-wrecs 8324 df-recs 8398 df-rdg 8437 df-er 8731 df-pm 8854 df-en 8971 df-dom 8972 df-sdom 8973 df-sup 9473 df-inf 9474 df-pnf 11288 df-mnf 11289 df-xr 11290 df-ltxr 11291 df-le 11292 df-sub 11484 df-neg 11485 df-div 11910 df-nn 12251 df-2 12313 df-3 12314 df-n0 12511 df-z 12597 df-uz 12861 df-rp 13015 df-fl 13797 df-seq 14007 df-exp 14067 df-cj 15086 df-re 15087 df-im 15088 df-sqrt 15222 df-abs 15223 df-clim 15472 df-rlim 15473

This theorem is referenced by: explecnv 15851 geolim 15856 geo2lim 15861 iscmet3lem3 25238 mbfi1fseqlem6 25670 geomcau 37265 stoweidlem7 45424

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