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Theorem cvgratnnlemnexp 11667

Description: Lemma for cvgratnn 11674. (Contributed by Jim Kingdon, 15-Nov-2022.)

**Hypotheses**
Ref	Expression
cvgratnn.3	⊢ (𝜑 → 𝐴 ∈ ℝ)
cvgratnn.4	⊢ (𝜑 → 𝐴 < 1)
cvgratnn.gt0	⊢ (𝜑 → 0 < 𝐴)
cvgratnn.6	⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
cvgratnn.7	⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
cvgratnnlemnexp.n	⊢ (𝜑 → 𝑁 ∈ ℕ)

**Assertion**
Ref	Expression
cvgratnnlemnexp	⊢ (𝜑 → (abs‘(𝐹‘𝑁)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1))))

Distinct variable groups: 𝐴,𝑘 𝑘,𝐹 𝑘,𝑁 𝜑,𝑘

Proof of Theorem cvgratnnlemnexp Dummy variables 𝑛 𝑤 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cvgratnnlemnexp.n	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ)
2		nnuz 9628	. . 3 ⊢ ℕ = (ℤ_≥‘1)
3	1, 2	eleqtrdi 2286	. 2 ⊢ (𝜑 → 𝑁 ∈ (ℤ_≥‘1))
4		2fveq3 5559	. . . . 5 ⊢ (𝑤 = 1 → (abs‘(𝐹‘𝑤)) = (abs‘(𝐹‘1)))
5		oveq1 5925	. . . . . . 7 ⊢ (𝑤 = 1 → (𝑤 − 1) = (1 − 1))
6	5	oveq2d 5934	. . . . . 6 ⊢ (𝑤 = 1 → (𝐴↑(𝑤 − 1)) = (𝐴↑(1 − 1)))
7	6	oveq2d 5934	. . . . 5 ⊢ (𝑤 = 1 → ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) = ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1))))
8	4, 7	breq12d 4042	. . . 4 ⊢ (𝑤 = 1 → ((abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) ↔ (abs‘(𝐹‘1)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1)))))
9	8	imbi2d 230	. . 3 ⊢ (𝑤 = 1 → ((𝜑 → (abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1)))) ↔ (𝜑 → (abs‘(𝐹‘1)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1))))))
10		2fveq3 5559	. . . . 5 ⊢ (𝑤 = 𝑘 → (abs‘(𝐹‘𝑤)) = (abs‘(𝐹‘𝑘)))
11		oveq1 5925	. . . . . . 7 ⊢ (𝑤 = 𝑘 → (𝑤 − 1) = (𝑘 − 1))
12	11	oveq2d 5934	. . . . . 6 ⊢ (𝑤 = 𝑘 → (𝐴↑(𝑤 − 1)) = (𝐴↑(𝑘 − 1)))
13	12	oveq2d 5934	. . . . 5 ⊢ (𝑤 = 𝑘 → ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) = ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))))
14	10, 13	breq12d 4042	. . . 4 ⊢ (𝑤 = 𝑘 → ((abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) ↔ (abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))))
15	14	imbi2d 230	. . 3 ⊢ (𝑤 = 𝑘 → ((𝜑 → (abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1)))) ↔ (𝜑 → (abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))))))
16		2fveq3 5559	. . . . 5 ⊢ (𝑤 = (𝑘 + 1) → (abs‘(𝐹‘𝑤)) = (abs‘(𝐹‘(𝑘 + 1))))
17		oveq1 5925	. . . . . . 7 ⊢ (𝑤 = (𝑘 + 1) → (𝑤 − 1) = ((𝑘 + 1) − 1))
18	17	oveq2d 5934	. . . . . 6 ⊢ (𝑤 = (𝑘 + 1) → (𝐴↑(𝑤 − 1)) = (𝐴↑((𝑘 + 1) − 1)))
19	18	oveq2d 5934	. . . . 5 ⊢ (𝑤 = (𝑘 + 1) → ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) = ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))
20	16, 19	breq12d 4042	. . . 4 ⊢ (𝑤 = (𝑘 + 1) → ((abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) ↔ (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
21	20	imbi2d 230	. . 3 ⊢ (𝑤 = (𝑘 + 1) → ((𝜑 → (abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1)))) ↔ (𝜑 → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))))
22		2fveq3 5559	. . . . 5 ⊢ (𝑤 = 𝑁 → (abs‘(𝐹‘𝑤)) = (abs‘(𝐹‘𝑁)))
23		oveq1 5925	. . . . . . 7 ⊢ (𝑤 = 𝑁 → (𝑤 − 1) = (𝑁 − 1))
24	23	oveq2d 5934	. . . . . 6 ⊢ (𝑤 = 𝑁 → (𝐴↑(𝑤 − 1)) = (𝐴↑(𝑁 − 1)))
25	24	oveq2d 5934	. . . . 5 ⊢ (𝑤 = 𝑁 → ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) = ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1))))
26	22, 25	breq12d 4042	. . . 4 ⊢ (𝑤 = 𝑁 → ((abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1))) ↔ (abs‘(𝐹‘𝑁)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1)))))
27	26	imbi2d 230	. . 3 ⊢ (𝑤 = 𝑁 → ((𝜑 → (abs‘(𝐹‘𝑤)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑤 − 1)))) ↔ (𝜑 → (abs‘(𝐹‘𝑁)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1))))))
28		fveq2 5554	. . . . . . . . 9 ⊢ (𝑘 = 1 → (𝐹‘𝑘) = (𝐹‘1))
29	28	eleq1d 2262	. . . . . . . 8 ⊢ (𝑘 = 1 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘1) ∈ ℂ))
30		cvgratnn.6	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
31	30	ralrimiva 2567	. . . . . . . 8 ⊢ (𝜑 → ∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ)
32		1nn 8993	. . . . . . . . 9 ⊢ 1 ∈ ℕ
33	32	a1i 9	. . . . . . . 8 ⊢ (𝜑 → 1 ∈ ℕ)
34	29, 31, 33	rspcdva 2869	. . . . . . 7 ⊢ (𝜑 → (𝐹‘1) ∈ ℂ)
35	34	abscld 11325	. . . . . 6 ⊢ (𝜑 → (abs‘(𝐹‘1)) ∈ ℝ)
36	35	leidd 8533	. . . . 5 ⊢ (𝜑 → (abs‘(𝐹‘1)) ≤ (abs‘(𝐹‘1)))
37		1m1e0 9051	. . . . . . . . . 10 ⊢ (1 − 1) = 0
38	37	a1i 9	. . . . . . . . 9 ⊢ (𝜑 → (1 − 1) = 0)
39	38	oveq2d 5934	. . . . . . . 8 ⊢ (𝜑 → (𝐴↑(1 − 1)) = (𝐴↑0))
40		cvgratnn.3	. . . . . . . . . 10 ⊢ (𝜑 → 𝐴 ∈ ℝ)
41	40	recnd 8048	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ ℂ)
42	41	exp0d 10738	. . . . . . . 8 ⊢ (𝜑 → (𝐴↑0) = 1)
43	39, 42	eqtrd 2226	. . . . . . 7 ⊢ (𝜑 → (𝐴↑(1 − 1)) = 1)
44	43	oveq2d 5934	. . . . . 6 ⊢ (𝜑 → ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1))) = ((abs‘(𝐹‘1)) · 1))
45	35	recnd 8048	. . . . . . 7 ⊢ (𝜑 → (abs‘(𝐹‘1)) ∈ ℂ)
46	45	mulridd 8036	. . . . . 6 ⊢ (𝜑 → ((abs‘(𝐹‘1)) · 1) = (abs‘(𝐹‘1)))
47	44, 46	eqtrd 2226	. . . . 5 ⊢ (𝜑 → ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1))) = (abs‘(𝐹‘1)))
48	36, 47	breqtrrd 4057	. . . 4 ⊢ (𝜑 → (abs‘(𝐹‘1)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1))))
49	48	a1i 9	. . 3 ⊢ (1 ∈ ℤ → (𝜑 → (abs‘(𝐹‘1)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(1 − 1)))))
50		elnnuz 9629	. . . . . 6 ⊢ (𝑘 ∈ ℕ ↔ 𝑘 ∈ (ℤ_≥‘1))
51	30	abscld 11325	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘𝑘)) ∈ ℝ)
52	35	adantr 276	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘1)) ∈ ℝ)
53	40	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ ℝ)
54		nnm1nn0 9281	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → (𝑘 − 1) ∈ ℕ₀)
55	54	adantl 277	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 − 1) ∈ ℕ₀)
56	53, 55	reexpcld 10761	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑(𝑘 − 1)) ∈ ℝ)
57	52, 56	remulcld 8050	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) ∈ ℝ)
58		0red 8020	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 0 ∈ ℝ)
59		cvgratnn.gt0	. . . . . . . . . . 11 ⊢ (𝜑 → 0 < 𝐴)
60	59	adantr 276	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 0 < 𝐴)
61	58, 53, 60	ltled 8138	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 0 ≤ 𝐴)
62		lemul2a 8878	. . . . . . . . . 10 ⊢ ((((abs‘(𝐹‘𝑘)) ∈ ℝ ∧ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 0 ≤ 𝐴)) ∧ (abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))) → (𝐴 · (abs‘(𝐹‘𝑘))) ≤ (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))))
63	62	ex 115	. . . . . . . . 9 ⊢ (((abs‘(𝐹‘𝑘)) ∈ ℝ ∧ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) ∈ ℝ ∧ (𝐴 ∈ ℝ ∧ 0 ≤ 𝐴)) → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (𝐴 · (abs‘(𝐹‘𝑘))) ≤ (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))))))
64	51, 57, 53, 61, 63	syl112anc 1253	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (𝐴 · (abs‘(𝐹‘𝑘))) ≤ (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))))))
65	41	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ ℂ)
66	45	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘1)) ∈ ℂ)
67	56	recnd 8048	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑(𝑘 − 1)) ∈ ℂ)
68	65, 66, 67	mul12d 8171	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))) = ((abs‘(𝐹‘1)) · (𝐴 · (𝐴↑(𝑘 − 1)))))
69	65, 55	expp1d 10745	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑((𝑘 − 1) + 1)) = ((𝐴↑(𝑘 − 1)) · 𝐴))
70		simpr 110	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ)
71	70	nncnd 8996	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℂ)
72		1cnd 8035	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 1 ∈ ℂ)
73	71, 72, 72	addsubd 8351	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) − 1) = ((𝑘 − 1) + 1))
74	73	oveq2d 5934	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑((𝑘 + 1) − 1)) = (𝐴↑((𝑘 − 1) + 1)))
75	65, 67	mulcomd 8041	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · (𝐴↑(𝑘 − 1))) = ((𝐴↑(𝑘 − 1)) · 𝐴))
76	69, 74, 75	3eqtr4rd 2237	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · (𝐴↑(𝑘 − 1))) = (𝐴↑((𝑘 + 1) − 1)))
77	76	oveq2d 5934	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘1)) · (𝐴 · (𝐴↑(𝑘 − 1)))) = ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))
78	68, 77	eqtrd 2226	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))) = ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))
79	78	breq2d 4041	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 · (abs‘(𝐹‘𝑘))) ≤ (𝐴 · ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))) ↔ (𝐴 · (abs‘(𝐹‘𝑘))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
80	64, 79	sylibd 149	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (𝐴 · (abs‘(𝐹‘𝑘))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
81		cvgratnn.7	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))))
82		fveq2 5554	. . . . . . . . . . . 12 ⊢ (𝑛 = (𝑘 + 1) → (𝐹‘𝑛) = (𝐹‘(𝑘 + 1)))
83	82	eleq1d 2262	. . . . . . . . . . 11 ⊢ (𝑛 = (𝑘 + 1) → ((𝐹‘𝑛) ∈ ℂ ↔ (𝐹‘(𝑘 + 1)) ∈ ℂ))
84		fveq2 5554	. . . . . . . . . . . . . . 15 ⊢ (𝑘 = 𝑛 → (𝐹‘𝑘) = (𝐹‘𝑛))
85	84	eleq1d 2262	. . . . . . . . . . . . . 14 ⊢ (𝑘 = 𝑛 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑛) ∈ ℂ))
86	85	cbvralv 2726	. . . . . . . . . . . . 13 ⊢ (∀𝑘 ∈ ℕ (𝐹‘𝑘) ∈ ℂ ↔ ∀𝑛 ∈ ℕ (𝐹‘𝑛) ∈ ℂ)
87	31, 86	sylib 122	. . . . . . . . . . . 12 ⊢ (𝜑 → ∀𝑛 ∈ ℕ (𝐹‘𝑛) ∈ ℂ)
88	87	adantr 276	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ∀𝑛 ∈ ℕ (𝐹‘𝑛) ∈ ℂ)
89		peano2nn 8994	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
90	89	adantl 277	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 + 1) ∈ ℕ)
91	83, 88, 90	rspcdva 2869	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘(𝑘 + 1)) ∈ ℂ)
92	91	abscld 11325	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (abs‘(𝐹‘(𝑘 + 1))) ∈ ℝ)
93	53, 51	remulcld 8050	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · (abs‘(𝐹‘𝑘))) ∈ ℝ)
94		elnnuz 9629	. . . . . . . . . . . . . 14 ⊢ ((𝑘 + 1) ∈ ℕ ↔ (𝑘 + 1) ∈ (ℤ_≥‘1))
95	89, 94	sylib 122	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ (ℤ_≥‘1))
96	95	adantl 277	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 + 1) ∈ (ℤ_≥‘1))
97		uznn0sub 9624	. . . . . . . . . . . 12 ⊢ ((𝑘 + 1) ∈ (ℤ_≥‘1) → ((𝑘 + 1) − 1) ∈ ℕ₀)
98	96, 97	syl 14	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) − 1) ∈ ℕ₀)
99	53, 98	reexpcld 10761	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴↑((𝑘 + 1) − 1)) ∈ ℝ)
100	52, 99	remulcld 8050	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))) ∈ ℝ)
101		letr 8102	. . . . . . . . 9 ⊢ (((abs‘(𝐹‘(𝑘 + 1))) ∈ ℝ ∧ (𝐴 · (abs‘(𝐹‘𝑘))) ∈ ℝ ∧ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))) ∈ ℝ) → (((abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))) ∧ (𝐴 · (abs‘(𝐹‘𝑘))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
102	92, 93, 100, 101	syl3anc 1249	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (((abs‘(𝐹‘(𝑘 + 1))) ≤ (𝐴 · (abs‘(𝐹‘𝑘))) ∧ (𝐴 · (abs‘(𝐹‘𝑘))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
103	81, 102	mpand 429	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 · (abs‘(𝐹‘𝑘))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
104	80, 103	syld 45	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
105	50, 104	sylan2br 288	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ (ℤ_≥‘1)) → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1)))))
106	105	expcom 116	. . . 4 ⊢ (𝑘 ∈ (ℤ_≥‘1) → (𝜑 → ((abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1))) → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))))
107	106	a2d 26	. . 3 ⊢ (𝑘 ∈ (ℤ_≥‘1) → ((𝜑 → (abs‘(𝐹‘𝑘)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑘 − 1)))) → (𝜑 → (abs‘(𝐹‘(𝑘 + 1))) ≤ ((abs‘(𝐹‘1)) · (𝐴↑((𝑘 + 1) − 1))))))
108	9, 15, 21, 27, 49, 107	uzind4 9653	. 2 ⊢ (𝑁 ∈ (ℤ_≥‘1) → (𝜑 → (abs‘(𝐹‘𝑁)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1)))))
109	3, 108	mpcom 36	1 ⊢ (𝜑 → (abs‘(𝐹‘𝑁)) ≤ ((abs‘(𝐹‘1)) · (𝐴↑(𝑁 − 1))))

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 980 = wceq 1364 ∈ wcel 2164 ∀wral 2472 class class class wbr 4029 ‘cfv 5254 (class class class)co 5918 ℂcc 7870 ℝcr 7871 0cc0 7872 1c1 7873 + caddc 7875 · cmul 7877 < clt 8054 ≤ cle 8055 − cmin 8190 ℕcn 8982 ℕ₀cn0 9240 ℤcz 9317 ℤ_≥cuz 9592 ↑cexp 10609 abscabs 11141

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-coll 4144 ax-sep 4147 ax-nul 4155 ax-pow 4203 ax-pr 4238 ax-un 4464 ax-setind 4569 ax-iinf 4620 ax-cnex 7963 ax-resscn 7964 ax-1cn 7965 ax-1re 7966 ax-icn 7967 ax-addcl 7968 ax-addrcl 7969 ax-mulcl 7970 ax-mulrcl 7971 ax-addcom 7972 ax-mulcom 7973 ax-addass 7974 ax-mulass 7975 ax-distr 7976 ax-i2m1 7977 ax-0lt1 7978 ax-1rid 7979 ax-0id 7980 ax-rnegex 7981 ax-precex 7982 ax-cnre 7983 ax-pre-ltirr 7984 ax-pre-ltwlin 7985 ax-pre-lttrn 7986 ax-pre-apti 7987 ax-pre-ltadd 7988 ax-pre-mulgt0 7989 ax-pre-mulext 7990 ax-arch 7991 ax-caucvg 7992

This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-if 3558 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-iun 3914 df-br 4030 df-opab 4091 df-mpt 4092 df-tr 4128 df-id 4324 df-po 4327 df-iso 4328 df-iord 4397 df-on 4399 df-ilim 4400 df-suc 4402 df-iom 4623 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-res 4671 df-ima 4672 df-iota 5215 df-fun 5256 df-fn 5257 df-f 5258 df-f1 5259 df-fo 5260 df-f1o 5261 df-fv 5262 df-riota 5873 df-ov 5921 df-oprab 5922 df-mpo 5923 df-1st 6193 df-2nd 6194 df-recs 6358 df-frec 6444 df-pnf 8056 df-mnf 8057 df-xr 8058 df-ltxr 8059 df-le 8060 df-sub 8192 df-neg 8193 df-reap 8594 df-ap 8601 df-div 8692 df-inn 8983 df-2 9041 df-3 9042 df-4 9043 df-n0 9241 df-z 9318 df-uz 9593 df-rp 9720 df-seqfrec 10519 df-exp 10610 df-cj 10986 df-re 10987 df-im 10988 df-rsqrt 11142 df-abs 11143

This theorem is referenced by: cvgratnnlemfm 11672

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