Theorem logfac2 24742

Description: Another expression for the logarithm of a factorial, in terms of the von Mangoldt function. Equation 9.2.7 of [Shapiro], p. 329. (Contributed by Mario Carneiro, 15-Apr-2016.) (Revised by Mario Carneiro, 3-May-2016.)

Assertion

Ref	Expression
logfac2	⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (log‘(!‘(⌊‘𝐴))) = Σ𝑘 ∈ (1...(⌊‘𝐴))((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))))

Distinct variable group:   𝐴,𝑘

Proof of Theorem logfac2

Dummy variables 𝑚 𝑛 𝑥 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		flge0nn0 12483	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (⌊‘𝐴) ∈ ℕ0)
2		logfac 24151	. . 3 ⊢ ((⌊‘𝐴) ∈ ℕ0 → (log‘(!‘(⌊‘𝐴))) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
3	1, 2	syl 17	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (log‘(!‘(⌊‘𝐴))) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
4		fzfid 12634	. . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (1...(⌊‘𝐴)) ∈ Fin)
5		fzfid 12634	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (1...(⌊‘𝐴)) ∈ Fin)
6		ssrab2 3650	. . . . 5 ⊢ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ⊆ (1...(⌊‘𝐴))
7		ssfi 8065	. . . . 5 ⊢ (((1...(⌊‘𝐴)) ∈ Fin ∧ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ⊆ (1...(⌊‘𝐴))) → {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ∈ Fin)
8	5, 6, 7	sylancl 693	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ∈ Fin)
9		flcl 12458	. . . . . . . . 9 ⊢ (𝐴 ∈ ℝ → (⌊‘𝐴) ∈ ℤ)
10	9	adantr 480	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (⌊‘𝐴) ∈ ℤ)
11		fznn 12278	. . . . . . . 8 ⊢ ((⌊‘𝐴) ∈ ℤ → (𝑘 ∈ (1...(⌊‘𝐴)) ↔ (𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴))))
12	10, 11	syl 17	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (𝑘 ∈ (1...(⌊‘𝐴)) ↔ (𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴))))
13	12	anbi1d 737	. . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑘 ∈ (1...(⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) ↔ ((𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))))
14		nnre 10904	. . . . . . . . . . 11 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℝ)
15	14	ad2antlr 759	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ∈ ℝ)
16		elfznn 12241	. . . . . . . . . . . 12 ⊢ (𝑛 ∈ (1...(⌊‘𝐴)) → 𝑛 ∈ ℕ)
17	16	ad2antrl 760	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑛 ∈ ℕ)
18	17	nnred 10912	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑛 ∈ ℝ)
19		reflcl 12459	. . . . . . . . . . 11 ⊢ (𝐴 ∈ ℝ → (⌊‘𝐴) ∈ ℝ)
20	19	ad3antrrr 762	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → (⌊‘𝐴) ∈ ℝ)
21		simprr 792	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ∥ 𝑛)
22		nnz 11276	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℤ)
23	22	ad2antlr 759	. . . . . . . . . . . 12 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ∈ ℤ)
24		dvdsle 14870	. . . . . . . . . . . 12 ⊢ ((𝑘 ∈ ℤ ∧ 𝑛 ∈ ℕ) → (𝑘 ∥ 𝑛 → 𝑘 ≤ 𝑛))
25	23, 17, 24	syl2anc 691	. . . . . . . . . . 11 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → (𝑘 ∥ 𝑛 → 𝑘 ≤ 𝑛))
26	21, 25	mpd 15	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ≤ 𝑛)
27		elfzle2 12216	. . . . . . . . . . 11 ⊢ (𝑛 ∈ (1...(⌊‘𝐴)) → 𝑛 ≤ (⌊‘𝐴))
28	27	ad2antrl 760	. . . . . . . . . 10 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑛 ≤ (⌊‘𝐴))
29	15, 18, 20, 26, 28	letrd 10073	. . . . . . . . 9 ⊢ ((((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ ℕ) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ≤ (⌊‘𝐴))
30	29	expl 646	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) → 𝑘 ≤ (⌊‘𝐴)))
31	30	pm4.71rd 665	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) ↔ (𝑘 ≤ (⌊‘𝐴) ∧ (𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)))))
32		an12 834	. . . . . . 7 ⊢ ((𝑛 ∈ (1...(⌊‘𝐴)) ∧ (𝑘 ∈ ℕ ∧ 𝑘 ∥ 𝑛)) ↔ (𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)))
33		anass 679	. . . . . . . 8 ⊢ (((𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) ↔ (𝑘 ∈ ℕ ∧ (𝑘 ≤ (⌊‘𝐴) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))))
34		an12 834	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ ∧ (𝑘 ≤ (⌊‘𝐴) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))) ↔ (𝑘 ≤ (⌊‘𝐴) ∧ (𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))))
35	33, 34	bitri 263	. . . . . . 7 ⊢ (((𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) ↔ (𝑘 ≤ (⌊‘𝐴) ∧ (𝑘 ∈ ℕ ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))))
36	31, 32, 35	3bitr4g 302	. . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑛 ∈ (1...(⌊‘𝐴)) ∧ (𝑘 ∈ ℕ ∧ 𝑘 ∥ 𝑛)) ↔ ((𝑘 ∈ ℕ ∧ 𝑘 ≤ (⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))))
37	13, 36	bitr4d 270	. . . . 5 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑘 ∈ (1...(⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)) ↔ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ (𝑘 ∈ ℕ ∧ 𝑘 ∥ 𝑛))))
38		breq2 4587	. . . . . . 7 ⊢ (𝑥 = 𝑛 → (𝑘 ∥ 𝑥 ↔ 𝑘 ∥ 𝑛))
39	38	elrab 3331	. . . . . 6 ⊢ (𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ↔ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛))
40	39	anbi2i 726	. . . . 5 ⊢ ((𝑘 ∈ (1...(⌊‘𝐴)) ∧ 𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) ↔ (𝑘 ∈ (1...(⌊‘𝐴)) ∧ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∥ 𝑛)))
41		breq1 4586	. . . . . . 7 ⊢ (𝑥 = 𝑘 → (𝑥 ∥ 𝑛 ↔ 𝑘 ∥ 𝑛))
42	41	elrab 3331	. . . . . 6 ⊢ (𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} ↔ (𝑘 ∈ ℕ ∧ 𝑘 ∥ 𝑛))
43	42	anbi2i 726	. . . . 5 ⊢ ((𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛}) ↔ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ (𝑘 ∈ ℕ ∧ 𝑘 ∥ 𝑛)))
44	37, 40, 43	3bitr4g 302	. . . 4 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → ((𝑘 ∈ (1...(⌊‘𝐴)) ∧ 𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) ↔ (𝑛 ∈ (1...(⌊‘𝐴)) ∧ 𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛})))
45		elfznn 12241	. . . . . . . 8 ⊢ (𝑘 ∈ (1...(⌊‘𝐴)) → 𝑘 ∈ ℕ)
46	45	adantl 481	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → 𝑘 ∈ ℕ)
47		vmacl 24644	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → (Λ‘𝑘) ∈ ℝ)
48	46, 47	syl 17	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (Λ‘𝑘) ∈ ℝ)
49	48	recnd 9947	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (Λ‘𝑘) ∈ ℂ)
50	49	adantrr 749	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝑘 ∈ (1...(⌊‘𝐴)) ∧ 𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥})) → (Λ‘𝑘) ∈ ℂ)
51	4, 4, 8, 44, 50	fsumcom2 14347	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → Σ𝑘 ∈ (1...(⌊‘𝐴))Σ𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} (Λ‘𝑘) = Σ𝑛 ∈ (1...(⌊‘𝐴))Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (Λ‘𝑘))
52		fsumconst 14364	. . . . . 6 ⊢ (({𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} ∈ Fin ∧ (Λ‘𝑘) ∈ ℂ) → Σ𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} (Λ‘𝑘) = ((#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) · (Λ‘𝑘)))
53	8, 49, 52	syl2anc 691	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → Σ𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} (Λ‘𝑘) = ((#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) · (Λ‘𝑘)))
54		fzfid 12634	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (1...(⌊‘(𝐴 / 𝑘))) ∈ Fin)
55		simpll 786	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → 𝐴 ∈ ℝ)
56		eqid 2610	. . . . . . . . . 10 ⊢ (𝑚 ∈ (1...(⌊‘(𝐴 / 𝑘))) ↦ (𝑘 · 𝑚)) = (𝑚 ∈ (1...(⌊‘(𝐴 / 𝑘))) ↦ (𝑘 · 𝑚))
57	55, 46, 56	dvdsflf1o 24713	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (𝑚 ∈ (1...(⌊‘(𝐴 / 𝑘))) ↦ (𝑘 · 𝑚)):(1...(⌊‘(𝐴 / 𝑘)))–1-1-onto→{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥})
58		f1oeng 7860	. . . . . . . . 9 ⊢ (((1...(⌊‘(𝐴 / 𝑘))) ∈ Fin ∧ (𝑚 ∈ (1...(⌊‘(𝐴 / 𝑘))) ↦ (𝑘 · 𝑚)):(1...(⌊‘(𝐴 / 𝑘)))–1-1-onto→{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) → (1...(⌊‘(𝐴 / 𝑘))) ≈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥})
59	54, 57, 58	syl2anc 691	. . . . . . . 8 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (1...(⌊‘(𝐴 / 𝑘))) ≈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥})
60		hasheni 12998	. . . . . . . 8 ⊢ ((1...(⌊‘(𝐴 / 𝑘))) ≈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} → (#‘(1...(⌊‘(𝐴 / 𝑘)))) = (#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}))
61	59, 60	syl 17	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (#‘(1...(⌊‘(𝐴 / 𝑘)))) = (#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}))
62		simpl 472	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → 𝐴 ∈ ℝ)
63		nndivre 10933	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℝ ∧ 𝑘 ∈ ℕ) → (𝐴 / 𝑘) ∈ ℝ)
64	62, 45, 63	syl2an 493	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (𝐴 / 𝑘) ∈ ℝ)
65		nngt0 10926	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → 0 < 𝑘)
66	14, 65	jca 553	. . . . . . . . . . 11 ⊢ (𝑘 ∈ ℕ → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
67	45, 66	syl 17	. . . . . . . . . 10 ⊢ (𝑘 ∈ (1...(⌊‘𝐴)) → (𝑘 ∈ ℝ ∧ 0 < 𝑘))
68		divge0 10771	. . . . . . . . . 10 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ (𝑘 ∈ ℝ ∧ 0 < 𝑘)) → 0 ≤ (𝐴 / 𝑘))
69	67, 68	sylan2 490	. . . . . . . . 9 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → 0 ≤ (𝐴 / 𝑘))
70		flge0nn0 12483	. . . . . . . . 9 ⊢ (((𝐴 / 𝑘) ∈ ℝ ∧ 0 ≤ (𝐴 / 𝑘)) → (⌊‘(𝐴 / 𝑘)) ∈ ℕ0)
71	64, 69, 70	syl2anc 691	. . . . . . . 8 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (⌊‘(𝐴 / 𝑘)) ∈ ℕ0)
72		hashfz1 12996	. . . . . . . 8 ⊢ ((⌊‘(𝐴 / 𝑘)) ∈ ℕ0 → (#‘(1...(⌊‘(𝐴 / 𝑘)))) = (⌊‘(𝐴 / 𝑘)))
73	71, 72	syl 17	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (#‘(1...(⌊‘(𝐴 / 𝑘)))) = (⌊‘(𝐴 / 𝑘)))
74	61, 73	eqtr3d 2646	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) = (⌊‘(𝐴 / 𝑘)))
75	74	oveq1d 6564	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → ((#‘{𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥}) · (Λ‘𝑘)) = ((⌊‘(𝐴 / 𝑘)) · (Λ‘𝑘)))
76	64	flcld 12461	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (⌊‘(𝐴 / 𝑘)) ∈ ℤ)
77	76	zcnd 11359	. . . . . 6 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → (⌊‘(𝐴 / 𝑘)) ∈ ℂ)
78	77, 49	mulcomd 9940	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → ((⌊‘(𝐴 / 𝑘)) · (Λ‘𝑘)) = ((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))))
79	53, 75, 78	3eqtrd 2648	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑘 ∈ (1...(⌊‘𝐴))) → Σ𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} (Λ‘𝑘) = ((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))))
80	79	sumeq2dv 14281	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → Σ𝑘 ∈ (1...(⌊‘𝐴))Σ𝑛 ∈ {𝑥 ∈ (1...(⌊‘𝐴)) ∣ 𝑘 ∥ 𝑥} (Λ‘𝑘) = Σ𝑘 ∈ (1...(⌊‘𝐴))((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))))
81	16	adantl 481	. . . . 5 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑛 ∈ (1...(⌊‘𝐴))) → 𝑛 ∈ ℕ)
82		vmasum 24741	. . . . 5 ⊢ (𝑛 ∈ ℕ → Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (Λ‘𝑘) = (log‘𝑛))
83	81, 82	syl 17	. . . 4 ⊢ (((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) ∧ 𝑛 ∈ (1...(⌊‘𝐴))) → Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (Λ‘𝑘) = (log‘𝑛))
84	83	sumeq2dv 14281	. . 3 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → Σ𝑛 ∈ (1...(⌊‘𝐴))Σ𝑘 ∈ {𝑥 ∈ ℕ ∣ 𝑥 ∥ 𝑛} (Λ‘𝑘) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
85	51, 80, 84	3eqtr3d 2652	. 2 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → Σ𝑘 ∈ (1...(⌊‘𝐴))((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
86	3, 85	eqtr4d 2647	1 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (log‘(!‘(⌊‘𝐴))) = Σ𝑘 ∈ (1...(⌊‘𝐴))((Λ‘𝑘) · (⌊‘(𝐴 / 𝑘))))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  {crab 2900   ⊆ wss 3540   class class class wbr 4583   ↦ cmpt 4643  –1-1-onto→wf1o 5803  ‘cfv 5804  (class class class)co 6549   ≈ cen 7838  Fincfn 7841  ℂcc 9813  ℝcr 9814  0cc0 9815  1c1 9816   · cmul 9820   < clt 9953   ≤ cle 9954   / cdiv 10563  ℕcn 10897  ℕ₀cn0 11169  ℤcz 11254  ...cfz 12197  ⌊cfl 12453  !cfa 12922  #chash 12979  Σcsu 14264   ∥ cdvds 14821  logclog 24105  Λcvma 24618

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893  ax-addf 9894  ax-mulf 9895

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-fi 8200  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-ioo 12050  df-ioc 12051  df-ico 12052  df-icc 12053  df-fz 12198  df-fzo 12335  df-fl 12455  df-mod 12531  df-seq 12664  df-exp 12723  df-fac 12923  df-bc 12952  df-hash 12980  df-shft 13655  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-limsup 14050  df-clim 14067  df-rlim 14068  df-sum 14265  df-ef 14637  df-sin 14639  df-cos 14640  df-pi 14642  df-dvds 14822  df-gcd 15055  df-prm 15224  df-pc 15380  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-starv 15783  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-unif 15792  df-hom 15793  df-cco 15794  df-rest 15906  df-topn 15907  df-0g 15925  df-gsum 15926  df-topgen 15927  df-pt 15928  df-prds 15931  df-xrs 15985  df-qtop 15990  df-imas 15991  df-xps 15993  df-mre 16069  df-mrc 16070  df-acs 16072  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-submnd 17159  df-mulg 17364  df-cntz 17573  df-cmn 18018  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-mopn 19563  df-fbas 19564  df-fg 19565  df-cnfld 19568  df-top 20521  df-bases 20522  df-topon 20523  df-topsp 20524  df-cld 20633  df-ntr 20634  df-cls 20635  df-nei 20712  df-lp 20750  df-perf 20751  df-cn 20841  df-cnp 20842  df-haus 20929  df-tx 21175  df-hmeo 21368  df-fil 21460  df-fm 21552  df-flim 21553  df-flf 21554  df-xms 21935  df-ms 21936  df-tms 21937  df-cncf 22489  df-limc 23436  df-dv 23437  df-log 24107  df-vma 24624

This theorem is referenced by:  vmadivsum  24971