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Theorem climcvg1nlem 11359

Description: Lemma for climcvg1n 11360. We construct sequences of the real and imaginary parts of each term of 𝐹, show those converge, and use that to show that 𝐹 converges. (Contributed by Jim Kingdon, 24-Aug-2021.)

**Hypotheses**
Ref	Expression
climcvg1n.f	⊢ (𝜑 → 𝐹:ℕ⟶ℂ)
climcvg1n.c	⊢ (𝜑 → 𝐶 ∈ ℝ⁺)
climcvg1n.cau	⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛))
climcvg1nlem.g	⊢ 𝐺 = (𝑥 ∈ ℕ ↦ (ℜ‘(𝐹‘𝑥)))
climcvg1nlem.h	⊢ 𝐻 = (𝑥 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑥)))
climcvg1nlem.j	⊢ 𝐽 = (𝑥 ∈ ℕ ↦ (i · (𝐻‘𝑥)))

**Assertion**
Ref	Expression
climcvg1nlem	⊢ (𝜑 → 𝐹 ∈ dom ⇝ )

Distinct variable groups: 𝐶,𝑘,𝑛 𝑘,𝐹,𝑥 𝑘,𝐺,𝑛 𝑘,𝐻,𝑛,𝑥 𝑘,𝐽 𝜑,𝑘,𝑛,𝑥 Allowed substitution hints: 𝐶(𝑥) 𝐹(𝑛) 𝐺(𝑥) 𝐽(𝑥,𝑛)

**Proof of Theorem climcvg1nlem**
Step	Hyp	Ref	Expression
1		nnuz 9565	. . 3 ⊢ ℕ = (ℤ_≥‘1)
2		1zzd 9282	. . 3 ⊢ (𝜑 → 1 ∈ ℤ)
3		climcvg1n.f	. . . . . . . 8 ⊢ (𝜑 → 𝐹:ℕ⟶ℂ)
4	3	ffvelcdmda 5653	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → (𝐹‘𝑥) ∈ ℂ)
5	4	recld 10949	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → (ℜ‘(𝐹‘𝑥)) ∈ ℝ)
6		climcvg1nlem.g	. . . . . 6 ⊢ 𝐺 = (𝑥 ∈ ℕ ↦ (ℜ‘(𝐹‘𝑥)))
7	5, 6	fmptd 5672	. . . . 5 ⊢ (𝜑 → 𝐺:ℕ⟶ℝ)
8		climcvg1n.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ⁺)
9		climcvg1n.cau	. . . . . 6 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛))
10		eluznn 9602	. . . . . . . . . . . . . . 15 ⊢ ((𝑛 ∈ ℕ ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑘 ∈ ℕ)
11	10	adantll 476	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑘 ∈ ℕ)
12	3	ad2antrr 488	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝐹:ℕ⟶ℂ)
13	12, 11	ffvelcdmd 5654	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐹‘𝑘) ∈ ℂ)
14	13	recld 10949	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℜ‘(𝐹‘𝑘)) ∈ ℝ)
15		fveq2 5517	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑘 → (𝐹‘𝑥) = (𝐹‘𝑘))
16	15	fveq2d 5521	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = 𝑘 → (ℜ‘(𝐹‘𝑥)) = (ℜ‘(𝐹‘𝑘)))
17	16, 6	fvmptg 5594	. . . . . . . . . . . . . 14 ⊢ ((𝑘 ∈ ℕ ∧ (ℜ‘(𝐹‘𝑘)) ∈ ℝ) → (𝐺‘𝑘) = (ℜ‘(𝐹‘𝑘)))
18	11, 14, 17	syl2anc 411	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐺‘𝑘) = (ℜ‘(𝐹‘𝑘)))
19		simplr 528	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑛 ∈ ℕ)
20	12, 19	ffvelcdmd 5654	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐹‘𝑛) ∈ ℂ)
21	20	recld 10949	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℜ‘(𝐹‘𝑛)) ∈ ℝ)
22		fveq2 5517	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑛 → (𝐹‘𝑥) = (𝐹‘𝑛))
23	22	fveq2d 5521	. . . . . . . . . . . . . . 15 ⊢ (𝑥 = 𝑛 → (ℜ‘(𝐹‘𝑥)) = (ℜ‘(𝐹‘𝑛)))
24	23, 6	fvmptg 5594	. . . . . . . . . . . . . 14 ⊢ ((𝑛 ∈ ℕ ∧ (ℜ‘(𝐹‘𝑛)) ∈ ℝ) → (𝐺‘𝑛) = (ℜ‘(𝐹‘𝑛)))
25	19, 21, 24	syl2anc 411	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐺‘𝑛) = (ℜ‘(𝐹‘𝑛)))
26	18, 25	oveq12d 5895	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐺‘𝑘) − (𝐺‘𝑛)) = ((ℜ‘(𝐹‘𝑘)) − (ℜ‘(𝐹‘𝑛))))
27	13, 20	resubd 10972	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛))) = ((ℜ‘(𝐹‘𝑘)) − (ℜ‘(𝐹‘𝑛))))
28	26, 27	eqtr4d 2213	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐺‘𝑘) − (𝐺‘𝑛)) = (ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛))))
29	28	fveq2d 5521	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) = (abs‘(ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛)))))
30	13, 20	subcld 8270	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐹‘𝑘) − (𝐹‘𝑛)) ∈ ℂ)
31		absrele 11094	. . . . . . . . . . 11 ⊢ (((𝐹‘𝑘) − (𝐹‘𝑛)) ∈ ℂ → (abs‘(ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
32	30, 31	syl 14	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘(ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
33	29, 32	eqbrtrd 4027	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
34	30	recld 10949	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∈ ℝ)
35	34	recnd 7988	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℜ‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∈ ℂ)
36	28, 35	eqeltrd 2254	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐺‘𝑘) − (𝐺‘𝑛)) ∈ ℂ)
37	36	abscld 11192	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) ∈ ℝ)
38	30	abscld 11192	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∈ ℝ)
39	8	ad2antrr 488	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝐶 ∈ ℝ⁺)
40	19	nnrpd 9696	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → 𝑛 ∈ ℝ⁺)
41	39, 40	rpdivcld 9716	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐶 / 𝑛) ∈ ℝ⁺)
42	41	rpred 9698	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐶 / 𝑛) ∈ ℝ)
43		lelttr 8048	. . . . . . . . . 10 ⊢ (((abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) ∈ ℝ ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∈ ℝ ∧ (𝐶 / 𝑛) ∈ ℝ) → (((abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛)))
44	37, 38, 42, 43	syl3anc 1238	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (((abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛)))
45	33, 44	mpand 429	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → (abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛)))
46	45	ralimdva 2544	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛)))
47	46	ralimdva 2544	. . . . . 6 ⊢ (𝜑 → (∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛)))
48	9, 47	mpd 13	. . . . 5 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐺‘𝑘) − (𝐺‘𝑛))) < (𝐶 / 𝑛))
49	7, 8, 48	climrecvg1n 11358	. . . 4 ⊢ (𝜑 → 𝐺 ∈ dom ⇝ )
50		climdm 11305	. . . 4 ⊢ (𝐺 ∈ dom ⇝ ↔ 𝐺 ⇝ ( ⇝ ‘𝐺))
51	49, 50	sylib 122	. . 3 ⊢ (𝜑 → 𝐺 ⇝ ( ⇝ ‘𝐺))
52		nnex 8927	. . . 4 ⊢ ℕ ∈ V
53		fex 5747	. . . 4 ⊢ ((𝐹:ℕ⟶ℂ ∧ ℕ ∈ V) → 𝐹 ∈ V)
54	3, 52, 53	sylancl 413	. . 3 ⊢ (𝜑 → 𝐹 ∈ V)
55	4	imcld 10950	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ℕ) → (ℑ‘(𝐹‘𝑥)) ∈ ℝ)
56		climcvg1nlem.h	. . . . . . 7 ⊢ 𝐻 = (𝑥 ∈ ℕ ↦ (ℑ‘(𝐹‘𝑥)))
57	55, 56	fmptd 5672	. . . . . 6 ⊢ (𝜑 → 𝐻:ℕ⟶ℝ)
58	13	imcld 10950	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℑ‘(𝐹‘𝑘)) ∈ ℝ)
59	15	fveq2d 5521	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑘 → (ℑ‘(𝐹‘𝑥)) = (ℑ‘(𝐹‘𝑘)))
60	59, 56	fvmptg 5594	. . . . . . . . . . . . . . 15 ⊢ ((𝑘 ∈ ℕ ∧ (ℑ‘(𝐹‘𝑘)) ∈ ℝ) → (𝐻‘𝑘) = (ℑ‘(𝐹‘𝑘)))
61	11, 58, 60	syl2anc 411	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐻‘𝑘) = (ℑ‘(𝐹‘𝑘)))
62	20	imcld 10950	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℑ‘(𝐹‘𝑛)) ∈ ℝ)
63	22	fveq2d 5521	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 = 𝑛 → (ℑ‘(𝐹‘𝑥)) = (ℑ‘(𝐹‘𝑛)))
64	63, 56	fvmptg 5594	. . . . . . . . . . . . . . 15 ⊢ ((𝑛 ∈ ℕ ∧ (ℑ‘(𝐹‘𝑛)) ∈ ℝ) → (𝐻‘𝑛) = (ℑ‘(𝐹‘𝑛)))
65	19, 62, 64	syl2anc 411	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐻‘𝑛) = (ℑ‘(𝐹‘𝑛)))
66	61, 65	oveq12d 5895	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐻‘𝑘) − (𝐻‘𝑛)) = ((ℑ‘(𝐹‘𝑘)) − (ℑ‘(𝐹‘𝑛))))
67	13, 20	imsubd 10973	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (ℑ‘((𝐹‘𝑘) − (𝐹‘𝑛))) = ((ℑ‘(𝐹‘𝑘)) − (ℑ‘(𝐹‘𝑛))))
68	66, 67	eqtr4d 2213	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐻‘𝑘) − (𝐻‘𝑛)) = (ℑ‘((𝐹‘𝑘) − (𝐹‘𝑛))))
69	68	fveq2d 5521	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) = (abs‘(ℑ‘((𝐹‘𝑘) − (𝐹‘𝑛)))))
70		absimle 11095	. . . . . . . . . . . 12 ⊢ (((𝐹‘𝑘) − (𝐹‘𝑛)) ∈ ℂ → (abs‘(ℑ‘((𝐹‘𝑘) − (𝐹‘𝑛)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
71	30, 70	syl 14	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘(ℑ‘((𝐹‘𝑘) − (𝐹‘𝑛)))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
72	69, 71	eqbrtrd 4027	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))))
73	61, 58	eqeltrd 2254	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐻‘𝑘) ∈ ℝ)
74	65, 62	eqeltrd 2254	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (𝐻‘𝑛) ∈ ℝ)
75	73, 74	resubcld 8340	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐻‘𝑘) − (𝐻‘𝑛)) ∈ ℝ)
76	75	recnd 7988	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((𝐻‘𝑘) − (𝐻‘𝑛)) ∈ ℂ)
77	76	abscld 11192	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) ∈ ℝ)
78		lelttr 8048	. . . . . . . . . . 11 ⊢ (((abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) ∈ ℝ ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∈ ℝ ∧ (𝐶 / 𝑛) ∈ ℝ) → (((abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛)))
79	77, 38, 42, 78	syl3anc 1238	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → (((abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) ≤ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) ∧ (abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛)) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛)))
80	72, 79	mpand 429	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑛 ∈ ℕ) ∧ 𝑘 ∈ (ℤ_≥‘𝑛)) → ((abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → (abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛)))
81	80	ralimdva 2544	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑛 ∈ ℕ) → (∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛)))
82	81	ralimdva 2544	. . . . . . 7 ⊢ (𝜑 → (∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐹‘𝑘) − (𝐹‘𝑛))) < (𝐶 / 𝑛) → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛)))
83	9, 82	mpd 13	. . . . . 6 ⊢ (𝜑 → ∀𝑛 ∈ ℕ ∀𝑘 ∈ (ℤ_≥‘𝑛)(abs‘((𝐻‘𝑘) − (𝐻‘𝑛))) < (𝐶 / 𝑛))
84	57, 8, 83	climrecvg1n 11358	. . . . 5 ⊢ (𝜑 → 𝐻 ∈ dom ⇝ )
85		climdm 11305	. . . . 5 ⊢ (𝐻 ∈ dom ⇝ ↔ 𝐻 ⇝ ( ⇝ ‘𝐻))
86	84, 85	sylib 122	. . . 4 ⊢ (𝜑 → 𝐻 ⇝ ( ⇝ ‘𝐻))
87		ax-icn 7908	. . . . 5 ⊢ i ∈ ℂ
88	87	a1i 9	. . . 4 ⊢ (𝜑 → i ∈ ℂ)
89		climcvg1nlem.j	. . . . . 6 ⊢ 𝐽 = (𝑥 ∈ ℕ ↦ (i · (𝐻‘𝑥)))
90	52	mptex 5744	. . . . . 6 ⊢ (𝑥 ∈ ℕ ↦ (i · (𝐻‘𝑥))) ∈ V
91	89, 90	eqeltri 2250	. . . . 5 ⊢ 𝐽 ∈ V
92	91	a1i 9	. . . 4 ⊢ (𝜑 → 𝐽 ∈ V)
93		ax-resscn 7905	. . . . . . 7 ⊢ ℝ ⊆ ℂ
94	93	a1i 9	. . . . . 6 ⊢ (𝜑 → ℝ ⊆ ℂ)
95	57, 94	fssd 5380	. . . . 5 ⊢ (𝜑 → 𝐻:ℕ⟶ℂ)
96	95	ffvelcdmda 5653	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐻‘𝑘) ∈ ℂ)
97	89	a1i 9	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐽 = (𝑥 ∈ ℕ ↦ (i · (𝐻‘𝑥))))
98		fveq2 5517	. . . . . . 7 ⊢ (𝑥 = 𝑘 → (𝐻‘𝑥) = (𝐻‘𝑘))
99	98	oveq2d 5893	. . . . . 6 ⊢ (𝑥 = 𝑘 → (i · (𝐻‘𝑥)) = (i · (𝐻‘𝑘)))
100	99	adantl 277	. . . . 5 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑥 = 𝑘) → (i · (𝐻‘𝑥)) = (i · (𝐻‘𝑘)))
101		simpr 110	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ)
102	87	a1i 9	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → i ∈ ℂ)
103	102, 96	mulcld 7980	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (i · (𝐻‘𝑘)) ∈ ℂ)
104	97, 100, 101, 103	fvmptd 5599	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐽‘𝑘) = (i · (𝐻‘𝑘)))
105	1, 2, 86, 88, 92, 96, 104	climmulc2 11341	. . 3 ⊢ (𝜑 → 𝐽 ⇝ (i · ( ⇝ ‘𝐻)))
106	7	ffvelcdmda 5653	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐺‘𝑘) ∈ ℝ)
107	106	recnd 7988	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐺‘𝑘) ∈ ℂ)
108	104, 103	eqeltrd 2254	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐽‘𝑘) ∈ ℂ)
109	3	ffvelcdmda 5653	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
110	109	replimd 10952	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) = ((ℜ‘(𝐹‘𝑘)) + (i · (ℑ‘(𝐹‘𝑘)))))
111	109	recld 10949	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (ℜ‘(𝐹‘𝑘)) ∈ ℝ)
112	101, 111, 17	syl2anc 411	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐺‘𝑘) = (ℜ‘(𝐹‘𝑘)))
113	109	imcld 10950	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (ℑ‘(𝐹‘𝑘)) ∈ ℝ)
114	101, 113, 60	syl2anc 411	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐻‘𝑘) = (ℑ‘(𝐹‘𝑘)))
115	114	oveq2d 5893	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (i · (𝐻‘𝑘)) = (i · (ℑ‘(𝐹‘𝑘))))
116	104, 115	eqtrd 2210	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐽‘𝑘) = (i · (ℑ‘(𝐹‘𝑘))))
117	112, 116	oveq12d 5895	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐺‘𝑘) + (𝐽‘𝑘)) = ((ℜ‘(𝐹‘𝑘)) + (i · (ℑ‘(𝐹‘𝑘)))))
118	110, 117	eqtr4d 2213	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) = ((𝐺‘𝑘) + (𝐽‘𝑘)))
119	1, 2, 51, 54, 105, 107, 108, 118	climadd 11336	. 2 ⊢ (𝜑 → 𝐹 ⇝ (( ⇝ ‘𝐺) + (i · ( ⇝ ‘𝐻))))
120		climrel 11290	. . 3 ⊢ Rel ⇝
121	120	releldmi 4868	. 2 ⊢ (𝐹 ⇝ (( ⇝ ‘𝐺) + (i · ( ⇝ ‘𝐻))) → 𝐹 ∈ dom ⇝ )
122	119, 121	syl 14	1 ⊢ (𝜑 → 𝐹 ∈ dom ⇝ )

Colors of variables: wff set class

Syntax hints: → wi 4 ∧ wa 104 = wceq 1353 ∈ wcel 2148 ∀wral 2455 Vcvv 2739 ⊆ wss 3131 class class class wbr 4005 ↦ cmpt 4066 dom cdm 4628 ⟶wf 5214 ‘cfv 5218 (class class class)co 5877 ℂcc 7811 ℝcr 7812 1c1 7814 ici 7815 + caddc 7816 · cmul 7818 < clt 7994 ≤ cle 7995 − cmin 8130 / cdiv 8631 ℕcn 8921 ℤ_≥cuz 9530 ℝ⁺crp 9655 ℜcre 10851 ℑcim 10852 abscabs 11008 ⇝ cli 11288

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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-coll 4120 ax-sep 4123 ax-nul 4131 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 ax-iinf 4589 ax-cnex 7904 ax-resscn 7905 ax-1cn 7906 ax-1re 7907 ax-icn 7908 ax-addcl 7909 ax-addrcl 7910 ax-mulcl 7911 ax-mulrcl 7912 ax-addcom 7913 ax-mulcom 7914 ax-addass 7915 ax-mulass 7916 ax-distr 7917 ax-i2m1 7918 ax-0lt1 7919 ax-1rid 7920 ax-0id 7921 ax-rnegex 7922 ax-precex 7923 ax-cnre 7924 ax-pre-ltirr 7925 ax-pre-ltwlin 7926 ax-pre-lttrn 7927 ax-pre-apti 7928 ax-pre-ltadd 7929 ax-pre-mulgt0 7930 ax-pre-mulext 7931 ax-arch 7932 ax-caucvg 7933

This theorem depends on definitions: df-bi 117 df-dc 835 df-3or 979 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-reu 2462 df-rmo 2463 df-rab 2464 df-v 2741 df-sbc 2965 df-csb 3060 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-nul 3425 df-if 3537 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-int 3847 df-iun 3890 df-br 4006 df-opab 4067 df-mpt 4068 df-tr 4104 df-id 4295 df-po 4298 df-iso 4299 df-iord 4368 df-on 4370 df-ilim 4371 df-suc 4373 df-iom 4592 df-xp 4634 df-rel 4635 df-cnv 4636 df-co 4637 df-dm 4638 df-rn 4639 df-res 4640 df-ima 4641 df-iota 5180 df-fun 5220 df-fn 5221 df-f 5222 df-f1 5223 df-fo 5224 df-f1o 5225 df-fv 5226 df-riota 5833 df-ov 5880 df-oprab 5881 df-mpo 5882 df-1st 6143 df-2nd 6144 df-recs 6308 df-frec 6394 df-pnf 7996 df-mnf 7997 df-xr 7998 df-ltxr 7999 df-le 8000 df-sub 8132 df-neg 8133 df-reap 8534 df-ap 8541 df-div 8632 df-inn 8922 df-2 8980 df-3 8981 df-4 8982 df-n0 9179 df-z 9256 df-uz 9531 df-rp 9656 df-seqfrec 10448 df-exp 10522 df-cj 10853 df-re 10854 df-im 10855 df-rsqrt 11009 df-abs 11010 df-clim 11289

This theorem is referenced by: climcvg1n 11360

W3C validator