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Theorem muinv 27065

Description: The Möbius inversion formula. If 𝐺(𝑛) = Σ𝑘 ∥ 𝑛𝐹(𝑘) for every 𝑛 ∈ ℕ, then 𝐹(𝑛) = Σ𝑘 ∥ 𝑛 μ(𝑘)𝐺(𝑛 / 𝑘) = Σ𝑘 ∥ 𝑛μ(𝑛 / 𝑘)𝐺(𝑘), i.e. the Möbius function is the Dirichlet convolution inverse of the constant function 1. Theorem 2.9 in [ApostolNT] p. 32. (Contributed by Mario Carneiro, 2-Jul-2015.)

**Hypotheses**
Ref	Expression
muinv.1	⊢ (𝜑 → 𝐹:ℕ⟶ℂ)
muinv.2	⊢ (𝜑 → 𝐺 = (𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘)))

**Assertion**
Ref	Expression
muinv	⊢ (𝜑 → 𝐹 = (𝑚 ∈ ℕ ↦ Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗)))))

Distinct variable groups: 𝑘,𝑚,𝑗,𝑛,𝐹 𝑥,𝑗,𝑘,𝑚,𝑛 𝜑,𝑗,𝑘,𝑚 Allowed substitution hints: 𝜑(𝑥,𝑛) 𝐹(𝑥) 𝐺(𝑥,𝑗,𝑘,𝑚,𝑛)

**Proof of Theorem muinv**
Step	Hyp	Ref	Expression
1		muinv.1	. . 3 ⊢ (𝜑 → 𝐹:ℕ⟶ℂ)
2	1	feqmptd 6951	. 2 ⊢ (𝜑 → 𝐹 = (𝑚 ∈ ℕ ↦ (𝐹‘𝑚)))
3		muinv.2	. . . . . . . . . 10 ⊢ (𝜑 → 𝐺 = (𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘)))
4	3	ad2antrr 723	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝐺 = (𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘)))
5	4	fveq1d 6884	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝐺‘(𝑚 / 𝑗)) = ((𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘))‘(𝑚 / 𝑗)))
6		breq1 5142	. . . . . . . . . . . . . 14 ⊢ (𝑥 = 𝑗 → (𝑥 ∥ 𝑚 ↔ 𝑗 ∥ 𝑚))
7	6	elrab 3676	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ↔ (𝑗 ∈ ℕ ∧ 𝑗 ∥ 𝑚))
8	7	simprbi 496	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} → 𝑗 ∥ 𝑚)
9	8	adantl 481	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑗 ∥ 𝑚)
10		elrabi 3670	. . . . . . . . . . . . . 14 ⊢ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} → 𝑗 ∈ ℕ)
11	10	adantl 481	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑗 ∈ ℕ)
12	11	nnzd 12584	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑗 ∈ ℤ)
13	11	nnne0d 12261	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑗 ≠ 0)
14		nnz 12578	. . . . . . . . . . . . 13 ⊢ (𝑚 ∈ ℕ → 𝑚 ∈ ℤ)
15	14	ad2antlr 724	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑚 ∈ ℤ)
16		dvdsval2 16203	. . . . . . . . . . . 12 ⊢ ((𝑗 ∈ ℤ ∧ 𝑗 ≠ 0 ∧ 𝑚 ∈ ℤ) → (𝑗 ∥ 𝑚 ↔ (𝑚 / 𝑗) ∈ ℤ))
17	12, 13, 15, 16	syl3anc 1368	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑗 ∥ 𝑚 ↔ (𝑚 / 𝑗) ∈ ℤ))
18	9, 17	mpbid 231	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 / 𝑗) ∈ ℤ)
19		nnre 12218	. . . . . . . . . . . . 13 ⊢ (𝑚 ∈ ℕ → 𝑚 ∈ ℝ)
20		nngt0 12242	. . . . . . . . . . . . 13 ⊢ (𝑚 ∈ ℕ → 0 < 𝑚)
21	19, 20	jca 511	. . . . . . . . . . . 12 ⊢ (𝑚 ∈ ℕ → (𝑚 ∈ ℝ ∧ 0 < 𝑚))
22	21	ad2antlr 724	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 ∈ ℝ ∧ 0 < 𝑚))
23		nnre 12218	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ ℕ → 𝑗 ∈ ℝ)
24		nngt0 12242	. . . . . . . . . . . . 13 ⊢ (𝑗 ∈ ℕ → 0 < 𝑗)
25	23, 24	jca 511	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ ℕ → (𝑗 ∈ ℝ ∧ 0 < 𝑗))
26	11, 25	syl 17	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑗 ∈ ℝ ∧ 0 < 𝑗))
27		divgt0 12081	. . . . . . . . . . 11 ⊢ (((𝑚 ∈ ℝ ∧ 0 < 𝑚) ∧ (𝑗 ∈ ℝ ∧ 0 < 𝑗)) → 0 < (𝑚 / 𝑗))
28	22, 26, 27	syl2anc 583	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 0 < (𝑚 / 𝑗))
29		elnnz 12567	. . . . . . . . . 10 ⊢ ((𝑚 / 𝑗) ∈ ℕ ↔ ((𝑚 / 𝑗) ∈ ℤ ∧ 0 < (𝑚 / 𝑗)))
30	18, 28, 29	sylanbrc 582	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 / 𝑗) ∈ ℕ)
31		breq2 5143	. . . . . . . . . . . 12 ⊢ (𝑛 = (𝑚 / 𝑗) → (𝑥 ∥ 𝑛 ↔ 𝑥 ∥ (𝑚 / 𝑗)))
32	31	rabbidv 3432	. . . . . . . . . . 11 ⊢ (𝑛 = (𝑚 / 𝑗) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} = {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)})
33	32	sumeq1d 15649	. . . . . . . . . 10 ⊢ (𝑛 = (𝑚 / 𝑗) → Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘))
34		eqid 2724	. . . . . . . . . 10 ⊢ (𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘)) = (𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘))
35		sumex 15636	. . . . . . . . . 10 ⊢ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘) ∈ V
36	33, 34, 35	fvmpt 6989	. . . . . . . . 9 ⊢ ((𝑚 / 𝑗) ∈ ℕ → ((𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘))‘(𝑚 / 𝑗)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘))
37	30, 36	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((𝑛 ∈ ℕ ↦ Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (𝐹‘𝑘))‘(𝑚 / 𝑗)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘))
38	5, 37	eqtrd 2764	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝐺‘(𝑚 / 𝑗)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘))
39	38	oveq2d 7418	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗))) = ((μ‘𝑗) · Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘)))
40		fzfid 13939	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (1...(𝑚 / 𝑗)) ∈ Fin)
41		dvdsssfz1 16264	. . . . . . . . 9 ⊢ ((𝑚 / 𝑗) ∈ ℕ → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ⊆ (1...(𝑚 / 𝑗)))
42	30, 41	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ⊆ (1...(𝑚 / 𝑗)))
43	40, 42	ssfid 9264	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ∈ Fin)
44		mucl 27013	. . . . . . . . 9 ⊢ (𝑗 ∈ ℕ → (μ‘𝑗) ∈ ℤ)
45	11, 44	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (μ‘𝑗) ∈ ℤ)
46	45	zcnd 12666	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (μ‘𝑗) ∈ ℂ)
47	1	ad2antrr 723	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝐹:ℕ⟶ℂ)
48		elrabi 3670	. . . . . . . 8 ⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} → 𝑘 ∈ ℕ)
49		ffvelcdm 7074	. . . . . . . 8 ⊢ ((𝐹:ℕ⟶ℂ ∧ 𝑘 ∈ ℕ) → (𝐹‘𝑘) ∈ ℂ)
50	47, 48, 49	syl2an 595	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)}) → (𝐹‘𝑘) ∈ ℂ)
51	43, 46, 50	fsummulc2 15732	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((μ‘𝑗) · Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} (𝐹‘𝑘)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ((μ‘𝑗) · (𝐹‘𝑘)))
52	39, 51	eqtrd 2764	. . . . 5 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗))) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ((μ‘𝑗) · (𝐹‘𝑘)))
53	52	sumeq2dv 15651	. . . 4 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗))) = Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ((μ‘𝑗) · (𝐹‘𝑘)))
54		simpr 484	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → 𝑚 ∈ ℕ)
55	46	adantrr 714	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)})) → (μ‘𝑗) ∈ ℂ)
56	50	anasss 466	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)})) → (𝐹‘𝑘) ∈ ℂ)
57	55, 56	mulcld 11233	. . . . 5 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ (𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)})) → ((μ‘𝑗) · (𝐹‘𝑘)) ∈ ℂ)
58	54, 57	fsumdvdsdiag 27056	. . . 4 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑗)} ((μ‘𝑗) · (𝐹‘𝑘)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ((μ‘𝑗) · (𝐹‘𝑘)))
59		ssrab2 4070	. . . . . . . . . 10 ⊢ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ⊆ ℕ
60		dvdsdivcl 16262	. . . . . . . . . . 11 ⊢ ((𝑚 ∈ ℕ ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 / 𝑘) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚})
61	60	adantll 711	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 / 𝑘) ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚})
62	59, 61	sselid 3973	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑚 / 𝑘) ∈ ℕ)
63		musum 27063	. . . . . . . . 9 ⊢ ((𝑚 / 𝑘) ∈ ℕ → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} (μ‘𝑗) = if((𝑚 / 𝑘) = 1, 1, 0))
64	62, 63	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} (μ‘𝑗) = if((𝑚 / 𝑘) = 1, 1, 0))
65	64	oveq1d 7417	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} (μ‘𝑗) · (𝐹‘𝑘)) = (if((𝑚 / 𝑘) = 1, 1, 0) · (𝐹‘𝑘)))
66		fzfid 13939	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (1...(𝑚 / 𝑘)) ∈ Fin)
67		dvdsssfz1 16264	. . . . . . . . . 10 ⊢ ((𝑚 / 𝑘) ∈ ℕ → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ⊆ (1...(𝑚 / 𝑘)))
68	62, 67	syl 17	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ⊆ (1...(𝑚 / 𝑘)))
69	66, 68	ssfid 9264	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ∈ Fin)
70	1	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → 𝐹:ℕ⟶ℂ)
71		elrabi 3670	. . . . . . . . 9 ⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} → 𝑘 ∈ ℕ)
72	70, 71, 49	syl2an 595	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝐹‘𝑘) ∈ ℂ)
73		ssrab2 4070	. . . . . . . . . . 11 ⊢ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ⊆ ℕ
74		simpr 484	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)}) → 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)})
75	73, 74	sselid 3973	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)}) → 𝑗 ∈ ℕ)
76	75, 44	syl 17	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)}) → (μ‘𝑗) ∈ ℤ)
77	76	zcnd 12666	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) ∧ 𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)}) → (μ‘𝑗) ∈ ℂ)
78	69, 72, 77	fsummulc1 15733	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} (μ‘𝑗) · (𝐹‘𝑘)) = Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ((μ‘𝑗) · (𝐹‘𝑘)))
79		ovif 7499	. . . . . . . 8 ⊢ (if((𝑚 / 𝑘) = 1, 1, 0) · (𝐹‘𝑘)) = if((𝑚 / 𝑘) = 1, (1 · (𝐹‘𝑘)), (0 · (𝐹‘𝑘)))
80		nncn 12219	. . . . . . . . . . . 12 ⊢ (𝑚 ∈ ℕ → 𝑚 ∈ ℂ)
81	80	ad2antlr 724	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑚 ∈ ℂ)
82	71	adantl 481	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑘 ∈ ℕ)
83	82	nncnd 12227	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑘 ∈ ℂ)
84		1cnd 11208	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 1 ∈ ℂ)
85	82	nnne0d 12261	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → 𝑘 ≠ 0)
86	81, 83, 84, 85	divmuld 12011	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((𝑚 / 𝑘) = 1 ↔ (𝑘 · 1) = 𝑚))
87	83	mulridd 11230	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (𝑘 · 1) = 𝑘)
88	87	eqeq1d 2726	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((𝑘 · 1) = 𝑚 ↔ 𝑘 = 𝑚))
89	86, 88	bitrd 279	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → ((𝑚 / 𝑘) = 1 ↔ 𝑘 = 𝑚))
90	72	mullidd 11231	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (1 · (𝐹‘𝑘)) = (𝐹‘𝑘))
91	72	mul02d 11411	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (0 · (𝐹‘𝑘)) = 0)
92	89, 90, 91	ifbieq12d 4549	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → if((𝑚 / 𝑘) = 1, (1 · (𝐹‘𝑘)), (0 · (𝐹‘𝑘))) = if(𝑘 = 𝑚, (𝐹‘𝑘), 0))
93	79, 92	eqtrid 2776	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → (if((𝑚 / 𝑘) = 1, 1, 0) · (𝐹‘𝑘)) = if(𝑘 = 𝑚, (𝐹‘𝑘), 0))
94	65, 78, 93	3eqtr3d 2772	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}) → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ((μ‘𝑗) · (𝐹‘𝑘)) = if(𝑘 = 𝑚, (𝐹‘𝑘), 0))
95	94	sumeq2dv 15651	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ((μ‘𝑗) · (𝐹‘𝑘)) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}if(𝑘 = 𝑚, (𝐹‘𝑘), 0))
96		breq1 5142	. . . . . . . 8 ⊢ (𝑥 = 𝑚 → (𝑥 ∥ 𝑚 ↔ 𝑚 ∥ 𝑚))
97	54	nnzd 12584	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → 𝑚 ∈ ℤ)
98		iddvds 16216	. . . . . . . . 9 ⊢ (𝑚 ∈ ℤ → 𝑚 ∥ 𝑚)
99	97, 98	syl 17	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → 𝑚 ∥ 𝑚)
100	96, 54, 99	elrabd 3678	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → 𝑚 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚})
101	100	snssd 4805	. . . . . 6 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → {𝑚} ⊆ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚})
102	101	sselda 3975	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑚}) → 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚})
103	102, 72	syldan 590	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑚}) → (𝐹‘𝑘) ∈ ℂ)
104		0cn 11205	. . . . . . 7 ⊢ 0 ∈ ℂ
105		ifcl 4566	. . . . . . 7 ⊢ (((𝐹‘𝑘) ∈ ℂ ∧ 0 ∈ ℂ) → if(𝑘 = 𝑚, (𝐹‘𝑘), 0) ∈ ℂ)
106	103, 104, 105	sylancl 585	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ {𝑚}) → if(𝑘 = 𝑚, (𝐹‘𝑘), 0) ∈ ℂ)
107		eldifsni 4786	. . . . . . . . 9 ⊢ (𝑘 ∈ ({𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∖ {𝑚}) → 𝑘 ≠ 𝑚)
108	107	adantl 481	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ ({𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∖ {𝑚})) → 𝑘 ≠ 𝑚)
109	108	neneqd 2937	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ ({𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∖ {𝑚})) → ¬ 𝑘 = 𝑚)
110	109	iffalsed 4532	. . . . . 6 ⊢ (((𝜑 ∧ 𝑚 ∈ ℕ) ∧ 𝑘 ∈ ({𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∖ {𝑚})) → if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = 0)
111		fzfid 13939	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → (1...𝑚) ∈ Fin)
112		dvdsssfz1 16264	. . . . . . . 8 ⊢ (𝑚 ∈ ℕ → {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ⊆ (1...𝑚))
113	112	adantl 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ⊆ (1...𝑚))
114	111, 113	ssfid 9264	. . . . . 6 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ∈ Fin)
115	101, 106, 110, 114	fsumss 15673	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑘 ∈ {𝑚}if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}if(𝑘 = 𝑚, (𝐹‘𝑘), 0))
116	1	ffvelcdmda 7077	. . . . . 6 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → (𝐹‘𝑚) ∈ ℂ)
117		iftrue 4527	. . . . . . . 8 ⊢ (𝑘 = 𝑚 → if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = (𝐹‘𝑘))
118		fveq2 6882	. . . . . . . 8 ⊢ (𝑘 = 𝑚 → (𝐹‘𝑘) = (𝐹‘𝑚))
119	117, 118	eqtrd 2764	. . . . . . 7 ⊢ (𝑘 = 𝑚 → if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = (𝐹‘𝑚))
120	119	sumsn 15694	. . . . . 6 ⊢ ((𝑚 ∈ ℕ ∧ (𝐹‘𝑚) ∈ ℂ) → Σ𝑘 ∈ {𝑚}if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = (𝐹‘𝑚))
121	54, 116, 120	syl2anc 583	. . . . 5 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑘 ∈ {𝑚}if(𝑘 = 𝑚, (𝐹‘𝑘), 0) = (𝐹‘𝑚))
122	95, 115, 121	3eqtr2d 2770	. . . 4 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚}Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ (𝑚 / 𝑘)} ((μ‘𝑗) · (𝐹‘𝑘)) = (𝐹‘𝑚))
123	53, 58, 122	3eqtrd 2768	. . 3 ⊢ ((𝜑 ∧ 𝑚 ∈ ℕ) → Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗))) = (𝐹‘𝑚))
124	123	mpteq2dva 5239	. 2 ⊢ (𝜑 → (𝑚 ∈ ℕ ↦ Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗)))) = (𝑚 ∈ ℕ ↦ (𝐹‘𝑚)))
125	2, 124	eqtr4d 2767	1 ⊢ (𝜑 → 𝐹 = (𝑚 ∈ ℕ ↦ Σ𝑗 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑚} ((μ‘𝑗) · (𝐺‘(𝑚 / 𝑗)))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1533 ∈ wcel 2098 ≠ wne 2932 {crab 3424 ∖ cdif 3938 ⊆ wss 3941 ifcif 4521 {csn 4621 class class class wbr 5139 ↦ cmpt 5222 ⟶wf 6530 ‘cfv 6534 (class class class)co 7402 ℂcc 11105 ℝcr 11106 0cc0 11107 1c1 11108 · cmul 11112 < clt 11247 / cdiv 11870 ℕcn 12211 ℤcz 12557 ...cfz 13485 Σcsu 15634 ∥ cdvds 16200 μcmu 26967

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 2695 ax-rep 5276 ax-sep 5290 ax-nul 5297 ax-pow 5354 ax-pr 5418 ax-un 7719 ax-inf2 9633 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-pre-sup 11185

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 2526 df-eu 2555 df-clab 2702 df-cleq 2716 df-clel 2802 df-nfc 2877 df-ne 2933 df-nel 3039 df-ral 3054 df-rex 3063 df-rmo 3368 df-reu 3369 df-rab 3425 df-v 3468 df-sbc 3771 df-csb 3887 df-dif 3944 df-un 3946 df-in 3948 df-ss 3958 df-pss 3960 df-nul 4316 df-if 4522 df-pw 4597 df-sn 4622 df-pr 4624 df-op 4628 df-uni 4901 df-int 4942 df-iun 4990 df-disj 5105 df-br 5140 df-opab 5202 df-mpt 5223 df-tr 5257 df-id 5565 df-eprel 5571 df-po 5579 df-so 5580 df-fr 5622 df-se 5623 df-we 5624 df-xp 5673 df-rel 5674 df-cnv 5675 df-co 5676 df-dm 5677 df-rn 5678 df-res 5679 df-ima 5680 df-pred 6291 df-ord 6358 df-on 6359 df-lim 6360 df-suc 6361 df-iota 6486 df-fun 6536 df-fn 6537 df-f 6538 df-f1 6539 df-fo 6540 df-f1o 6541 df-fv 6542 df-isom 6543 df-riota 7358 df-ov 7405 df-oprab 7406 df-mpo 7407 df-om 7850 df-1st 7969 df-2nd 7970 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-2o 8463 df-oadd 8466 df-er 8700 df-map 8819 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-sup 9434 df-inf 9435 df-oi 9502 df-dju 9893 df-card 9931 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-n0 12472 df-xnn0 12544 df-z 12558 df-uz 12822 df-q 12932 df-rp 12976 df-fz 13486 df-fzo 13629 df-fl 13758 df-mod 13836 df-seq 13968 df-exp 14029 df-fac 14235 df-bc 14264 df-hash 14292 df-cj 15048 df-re 15049 df-im 15050 df-sqrt 15184 df-abs 15185 df-clim 15434 df-sum 15635 df-dvds 16201 df-gcd 16439 df-prm 16612 df-pc 16775 df-mu 26973

This theorem is referenced by: dchrvmasumlem1 27368 logsqvma2 27416

W3C validator