Theorem logdivbnd 27544

Description: A bound on a sum of logs, used in pntlemk 27594. This is not as precise as logdivsum 27521 in its asymptotic behavior, but it is valid for all 𝑁 and does not require a limit value. (Contributed by Mario Carneiro, 13-Apr-2016.)

Assertion

Ref	Expression
logdivbnd	⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ ((((log‘𝑁) + 1)↑2) / 2))

Distinct variable group:   𝑛,𝑁

Proof of Theorem logdivbnd

Dummy variables 𝑖 𝑚 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		2re 12253	. . . 4 ⊢ 2 ∈ ℝ
2		fzfid 13933	. . . . 5 ⊢ (𝑁 ∈ ℕ → (1...𝑁) ∈ Fin)
3		elfzuz 13472	. . . . . . . . . 10 ⊢ (𝑛 ∈ (1...𝑁) → 𝑛 ∈ (ℤ≥‘1))
4	3	adantl 482	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ (ℤ≥‘1))
5		nnuz 12825	. . . . . . . . 9 ⊢ ℕ = (ℤ≥‘1)
6	4, 5	eleqtrrdi 2851	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℕ)
7	6	nnrpd 12982	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℝ+)
8	7	relogcld 26612	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (log‘𝑛) ∈ ℝ)
9	8, 6	nndivred 12229	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((log‘𝑛) / 𝑛) ∈ ℝ)
10	2, 9	fsumrecl 15694	. . . 4 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ∈ ℝ)
11		remulcl 11121	. . . 4 ⊢ ((2 ∈ ℝ ∧ Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ∈ ℝ) → (2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ∈ ℝ)
12	1, 10, 11	sylancr 593	. . 3 ⊢ (𝑁 ∈ ℕ → (2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ∈ ℝ)
13		elfznn 13505	. . . . . . 7 ⊢ (𝑖 ∈ (1...𝑁) → 𝑖 ∈ ℕ)
14	13	adantl 482	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑖 ∈ (1...𝑁)) → 𝑖 ∈ ℕ)
15	14	nnrecred 12226	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑖 ∈ (1...𝑁)) → (1 / 𝑖) ∈ ℝ)
16	2, 15	fsumrecl 15694	. . . 4 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) ∈ ℝ)
17	16	resqcld 14085	. . 3 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) ∈ ℝ)
18		nnrp 12952	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ+)
19	18	relogcld 26612	. . . . 5 ⊢ (𝑁 ∈ ℕ → (log‘𝑁) ∈ ℝ)
20		peano2re 11317	. . . . 5 ⊢ ((log‘𝑁) ∈ ℝ → ((log‘𝑁) + 1) ∈ ℝ)
21	19, 20	syl 17	. . . 4 ⊢ (𝑁 ∈ ℕ → ((log‘𝑁) + 1) ∈ ℝ)
22	21	resqcld 14085	. . 3 ⊢ (𝑁 ∈ ℕ → (((log‘𝑁) + 1)↑2) ∈ ℝ)
23	10	recnd 11171	. . . . 5 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ∈ ℂ)
24	23	2timesd 12418	. . . 4 ⊢ (𝑁 ∈ ℕ → (2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) = (Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) + Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)))
25		fzfid 13933	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1...𝑛) ∈ Fin)
26		elfznn 13505	. . . . . . . . . . 11 ⊢ (𝑖 ∈ (1...𝑛) → 𝑖 ∈ ℕ)
27	26	adantl 482	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → 𝑖 ∈ ℕ)
28	27	nnrecred 12226	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → (1 / 𝑖) ∈ ℝ)
29	25, 28	fsumrecl 15694	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) ∈ ℝ)
30	29, 6	nndivred 12229	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) ∈ ℝ)
31	2, 30	fsumrecl 15694	. . . . . 6 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) ∈ ℝ)
32		fzfid 13933	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1...(𝑛 − 1)) ∈ Fin)
33		elfznn 13505	. . . . . . . . . . 11 ⊢ (𝑖 ∈ (1...(𝑛 − 1)) → 𝑖 ∈ ℕ)
34	33	adantl 482	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...(𝑛 − 1))) → 𝑖 ∈ ℕ)
35	34	nnrecred 12226	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...(𝑛 − 1))) → (1 / 𝑖) ∈ ℝ)
36	32, 35	fsumrecl 15694	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ∈ ℝ)
37	36, 6	nndivred 12229	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ∈ ℝ)
38	2, 37	fsumrecl 15694	. . . . . 6 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ∈ ℝ)
39	6	nncnd 12188	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℂ)
40		ax-1cn 11094	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ ℂ
41		npcan 11400	. . . . . . . . . . . . . . 15 ⊢ ((𝑛 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑛 − 1) + 1) = 𝑛)
42	39, 40, 41	sylancl 592	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((𝑛 − 1) + 1) = 𝑛)
43	42	fveq2d 6838	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (log‘((𝑛 − 1) + 1)) = (log‘𝑛))
44	43	oveq2d 7379	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘((𝑛 − 1) + 1))) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)))
45		nnm1nn0 12476	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℕ → (𝑛 − 1) ∈ ℕ0)
46		harmonicbnd3 26996	. . . . . . . . . . . . 13 ⊢ ((𝑛 − 1) ∈ ℕ0 → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘((𝑛 − 1) + 1))) ∈ (0[,]γ))
47	6, 45, 46	3syl 18	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘((𝑛 − 1) + 1))) ∈ (0[,]γ))
48	44, 47	eqeltrrd 2841	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ∈ (0[,]γ))
49		0re 11144	. . . . . . . . . . . . 13 ⊢ 0 ∈ ℝ
50		emre 26994	. . . . . . . . . . . . 13 ⊢ γ ∈ ℝ
51	49, 50	elicc2i 13363	. . . . . . . . . . . 12 ⊢ ((Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ∈ (0[,]γ) ↔ ((Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ∈ ℝ ∧ 0 ≤ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ∧ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ≤ γ))
52	51	simp2bi 1152	. . . . . . . . . . 11 ⊢ ((Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ∈ (0[,]γ) → 0 ≤ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)))
53	48, 52	syl 17	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 0 ≤ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)))
54	36, 8	subge0d 11738	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (0 ≤ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) − (log‘𝑛)) ↔ (log‘𝑛) ≤ Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)))
55	53, 54	mpbid 233	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (log‘𝑛) ≤ Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))
56	8, 36, 7, 55	lediv1dd 13042	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((log‘𝑛) / 𝑛) ≤ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛))
57	27	nnrpd 12982	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → 𝑖 ∈ ℝ+)
58	57	rpreccld 12994	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → (1 / 𝑖) ∈ ℝ+)
59	58	rpge0d 12988	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → 0 ≤ (1 / 𝑖))
60		elfzelz 13476	. . . . . . . . . . . . . 14 ⊢ (𝑛 ∈ (1...𝑁) → 𝑛 ∈ ℤ)
61	60	adantl 482	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℤ)
62		peano2zm 12568	. . . . . . . . . . . . 13 ⊢ (𝑛 ∈ ℤ → (𝑛 − 1) ∈ ℤ)
63	61, 62	syl 17	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (𝑛 − 1) ∈ ℤ)
64	6	nnred 12187	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ ℝ)
65	64	lem1d 12087	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (𝑛 − 1) ≤ 𝑛)
66		eluz2 12792	. . . . . . . . . . . 12 ⊢ (𝑛 ∈ (ℤ≥‘(𝑛 − 1)) ↔ ((𝑛 − 1) ∈ ℤ ∧ 𝑛 ∈ ℤ ∧ (𝑛 − 1) ≤ 𝑛))
67	63, 61, 65, 66	syl3anbrc 1350	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ∈ (ℤ≥‘(𝑛 − 1)))
68		fzss2 13516	. . . . . . . . . . 11 ⊢ (𝑛 ∈ (ℤ≥‘(𝑛 − 1)) → (1...(𝑛 − 1)) ⊆ (1...𝑛))
69	67, 68	syl 17	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1...(𝑛 − 1)) ⊆ (1...𝑛))
70	25, 28, 59, 69	fsumless 15757	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ≤ Σ𝑖 ∈ (1...𝑛)(1 / 𝑖))
71	6	nngt0d 12224	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 0 < 𝑛)
72		lediv1 12019	. . . . . . . . . 10 ⊢ ((Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ∈ ℝ ∧ Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) ∈ ℝ ∧ (𝑛 ∈ ℝ ∧ 0 < 𝑛)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ≤ Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) ↔ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ≤ (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛)))
73	36, 29, 64, 71, 72	syl112anc 1382	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ≤ Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) ↔ (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ≤ (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛)))
74	70, 73	mpbid 233	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ≤ (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛))
75	9, 37, 30, 56, 74	letrd 11301	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((log‘𝑛) / 𝑛) ≤ (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛))
76	2, 9, 30, 75	fsumle 15760	. . . . . 6 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛))
77	2, 9, 37, 56	fsumle 15760	. . . . . 6 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛))
78	10, 10, 31, 38, 76, 77	le2addd 11767	. . . . 5 ⊢ (𝑁 ∈ ℕ → (Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) + Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) + Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛)))
79		oveq1 7370	. . . . . . . . . . 11 ⊢ (𝑚 = 𝑛 → (𝑚 − 1) = (𝑛 − 1))
80	79	oveq2d 7379	. . . . . . . . . 10 ⊢ (𝑚 = 𝑛 → (1...(𝑚 − 1)) = (1...(𝑛 − 1)))
81	80	sumeq1d 15660	. . . . . . . . 9 ⊢ (𝑚 = 𝑛 → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))
82	81, 81	jca 516	. . . . . . . 8 ⊢ (𝑚 = 𝑛 → (Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ∧ Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)))
83		oveq1 7370	. . . . . . . . . . 11 ⊢ (𝑚 = (𝑛 + 1) → (𝑚 − 1) = ((𝑛 + 1) − 1))
84	83	oveq2d 7379	. . . . . . . . . 10 ⊢ (𝑚 = (𝑛 + 1) → (1...(𝑚 − 1)) = (1...((𝑛 + 1) − 1)))
85	84	sumeq1d 15660	. . . . . . . . 9 ⊢ (𝑚 = (𝑛 + 1) → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖))
86	85, 85	jca 516	. . . . . . . 8 ⊢ (𝑚 = (𝑛 + 1) → (Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) ∧ Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖)))
87		oveq1 7370	. . . . . . . . . . . . . 14 ⊢ (𝑚 = 1 → (𝑚 − 1) = (1 − 1))
88		1m1e0 12251	. . . . . . . . . . . . . 14 ⊢ (1 − 1) = 0
89	87, 88	eqtrdi 2791	. . . . . . . . . . . . 13 ⊢ (𝑚 = 1 → (𝑚 − 1) = 0)
90	89	oveq2d 7379	. . . . . . . . . . . 12 ⊢ (𝑚 = 1 → (1...(𝑚 − 1)) = (1...0))
91		fz10 13497	. . . . . . . . . . . 12 ⊢ (1...0) = ∅
92	90, 91	eqtrdi 2791	. . . . . . . . . . 11 ⊢ (𝑚 = 1 → (1...(𝑚 − 1)) = ∅)
93	92	sumeq1d 15660	. . . . . . . . . 10 ⊢ (𝑚 = 1 → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ ∅ (1 / 𝑖))
94		sum0 15681	. . . . . . . . . 10 ⊢ Σ𝑖 ∈ ∅ (1 / 𝑖) = 0
95	93, 94	eqtrdi 2791	. . . . . . . . 9 ⊢ (𝑚 = 1 → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = 0)
96	95, 95	jca 516	. . . . . . . 8 ⊢ (𝑚 = 1 → (Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = 0 ∧ Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = 0))
97		oveq1 7370	. . . . . . . . . . 11 ⊢ (𝑚 = (𝑁 + 1) → (𝑚 − 1) = ((𝑁 + 1) − 1))
98	97	oveq2d 7379	. . . . . . . . . 10 ⊢ (𝑚 = (𝑁 + 1) → (1...(𝑚 − 1)) = (1...((𝑁 + 1) − 1)))
99	98	sumeq1d 15660	. . . . . . . . 9 ⊢ (𝑚 = (𝑁 + 1) → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖))
100	99, 99	jca 516	. . . . . . . 8 ⊢ (𝑚 = (𝑁 + 1) → (Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) ∧ Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)))
101		peano2nn 12184	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (𝑁 + 1) ∈ ℕ)
102	101, 5	eleqtrdi 2850	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (𝑁 + 1) ∈ (ℤ≥‘1))
103		fzfid 13933	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑚 ∈ (1...(𝑁 + 1))) → (1...(𝑚 − 1)) ∈ Fin)
104		elfznn 13505	. . . . . . . . . . . 12 ⊢ (𝑖 ∈ (1...(𝑚 − 1)) → 𝑖 ∈ ℕ)
105	104	adantl 482	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑚 ∈ (1...(𝑁 + 1))) ∧ 𝑖 ∈ (1...(𝑚 − 1))) → 𝑖 ∈ ℕ)
106	105	nnrecred 12226	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑚 ∈ (1...(𝑁 + 1))) ∧ 𝑖 ∈ (1...(𝑚 − 1))) → (1 / 𝑖) ∈ ℝ)
107	103, 106	fsumrecl 15694	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑚 ∈ (1...(𝑁 + 1))) → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) ∈ ℝ)
108	107	recnd 11171	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑚 ∈ (1...(𝑁 + 1))) → Σ𝑖 ∈ (1...(𝑚 − 1))(1 / 𝑖) ∈ ℂ)
109	82, 86, 96, 100, 102, 108, 108	fsumparts 15767	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1..^(𝑁 + 1))(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))) = (((Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) − (0 · 0)) − Σ𝑛 ∈ (1..^(𝑁 + 1))((Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) · Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖))))
110		nnz 12543	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℤ)
111		fzval3 13687	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℤ → (1...𝑁) = (1..^(𝑁 + 1)))
112	110, 111	syl 17	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (1...𝑁) = (1..^(𝑁 + 1)))
113	112	eqcomd 2746	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (1..^(𝑁 + 1)) = (1...𝑁))
114	36	recnd 11171	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) ∈ ℂ)
115	6	nnrecred 12226	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1 / 𝑛) ∈ ℝ)
116	115	recnd 11171	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1 / 𝑛) ∈ ℂ)
117		pncan 11397	. . . . . . . . . . . . . . 15 ⊢ ((𝑛 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑛 + 1) − 1) = 𝑛)
118	39, 40, 117	sylancl 592	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((𝑛 + 1) − 1) = 𝑛)
119	118	oveq2d 7379	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (1...((𝑛 + 1) − 1)) = (1...𝑛))
120	119	sumeq1d 15660	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...𝑛)(1 / 𝑖))
121	28	recnd 11171	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) ∧ 𝑖 ∈ (1...𝑛)) → (1 / 𝑖) ∈ ℂ)
122		oveq2 7371	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑛 → (1 / 𝑖) = (1 / 𝑛))
123	4, 121, 122	fsumm1 15711	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) + (1 / 𝑛)))
124	120, 123	eqtrd 2775	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) + (1 / 𝑛)))
125	114, 116, 124	mvrladdd 11561	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) = (1 / 𝑛))
126	125	oveq2d 7379	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (1 / 𝑛)))
127	6	nnne0d 12225	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → 𝑛 ≠ 0)
128	114, 39, 127	divrecd 11932	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (1 / 𝑛)))
129	126, 128	eqtr4d 2778	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))) = (Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛))
130	113, 129	sumeq12rdv 15667	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1..^(𝑁 + 1))(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) · (Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖))) = Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛))
131		nncn 12180	. . . . . . . . . . . . . . 15 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
132		pncan 11397	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℂ ∧ 1 ∈ ℂ) → ((𝑁 + 1) − 1) = 𝑁)
133	131, 40, 132	sylancl 592	. . . . . . . . . . . . . 14 ⊢ (𝑁 ∈ ℕ → ((𝑁 + 1) − 1) = 𝑁)
134	133	oveq2d 7379	. . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → (1...((𝑁 + 1) − 1)) = (1...𝑁))
135	134	sumeq1d 15660	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) = Σ𝑖 ∈ (1...𝑁)(1 / 𝑖))
136	135, 135	oveq12d 7381	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) · Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)))
137	16	recnd 11171	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) ∈ ℂ)
138	137	sqvald 14103	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) · Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)))
139	136, 138	eqtr4d 2778	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
140		0cn 11134	. . . . . . . . . . . 12 ⊢ 0 ∈ ℂ
141	140	mul01i 11334	. . . . . . . . . . 11 ⊢ (0 · 0) = 0
142	141	a1i 11	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → (0 · 0) = 0)
143	139, 142	oveq12d 7381	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → ((Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) − (0 · 0)) = ((Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) − 0))
144	137	sqcld 14104	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) ∈ ℂ)
145	144	subid1d 11492	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → ((Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) − 0) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
146	143, 145	eqtrd 2775	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → ((Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) − (0 · 0)) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
147	125, 120	oveq12d 7381	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) · Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖)) = ((1 / 𝑛) · Σ𝑖 ∈ (1...𝑛)(1 / 𝑖)))
148	29	recnd 11171	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) ∈ ℂ)
149	148, 39, 127	divrec2d 11933	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) = ((1 / 𝑛) · Σ𝑖 ∈ (1...𝑛)(1 / 𝑖)))
150	147, 149	eqtr4d 2778	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑛 ∈ (1...𝑁)) → ((Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) · Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖)) = (Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛))
151	113, 150	sumeq12rdv 15667	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1..^(𝑁 + 1))((Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) · Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖)) = Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛))
152	146, 151	oveq12d 7381	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (((Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖) · Σ𝑖 ∈ (1...((𝑁 + 1) − 1))(1 / 𝑖)) − (0 · 0)) − Σ𝑛 ∈ (1..^(𝑁 + 1))((Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖) − Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖)) · Σ𝑖 ∈ (1...((𝑛 + 1) − 1))(1 / 𝑖))) = ((Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) − Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛)))
153	109, 130, 152	3eqtr3rd 2784	. . . . . 6 ⊢ (𝑁 ∈ ℕ → ((Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) − Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛)) = Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛))
154	31	recnd 11171	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) ∈ ℂ)
155	38	recnd 11171	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ∈ ℂ)
156	144, 154, 155	subaddd 11521	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (((Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) − Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛)) = Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛) ↔ (Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) + Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛)) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2)))
157	153, 156	mpbid 233	. . . . 5 ⊢ (𝑁 ∈ ℕ → (Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...𝑛)(1 / 𝑖) / 𝑛) + Σ𝑛 ∈ (1...𝑁)(Σ𝑖 ∈ (1...(𝑛 − 1))(1 / 𝑖) / 𝑛)) = (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
158	78, 157	breqtrd 5105	. . . 4 ⊢ (𝑁 ∈ ℕ → (Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) + Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
159	24, 158	eqbrtrd 5101	. . 3 ⊢ (𝑁 ∈ ℕ → (2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2))
160		flid 13765	. . . . . . . 8 ⊢ (𝑁 ∈ ℤ → (⌊‘𝑁) = 𝑁)
161	110, 160	syl 17	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (⌊‘𝑁) = 𝑁)
162	161	oveq2d 7379	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (1...(⌊‘𝑁)) = (1...𝑁))
163	162	sumeq1d 15660	. . . . 5 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...(⌊‘𝑁))(1 / 𝑖) = Σ𝑖 ∈ (1...𝑁)(1 / 𝑖))
164		nnre 12179	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℝ)
165		nnge1 12203	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 1 ≤ 𝑁)
166		harmonicubnd 26998	. . . . . 6 ⊢ ((𝑁 ∈ ℝ ∧ 1 ≤ 𝑁) → Σ𝑖 ∈ (1...(⌊‘𝑁))(1 / 𝑖) ≤ ((log‘𝑁) + 1))
167	164, 165, 166	syl2anc 590	. . . . 5 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...(⌊‘𝑁))(1 / 𝑖) ≤ ((log‘𝑁) + 1))
168	163, 167	eqbrtrrd 5103	. . . 4 ⊢ (𝑁 ∈ ℕ → Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) ≤ ((log‘𝑁) + 1))
169	14	nnrpd 12982	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑖 ∈ (1...𝑁)) → 𝑖 ∈ ℝ+)
170	169	rpreccld 12994	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑖 ∈ (1...𝑁)) → (1 / 𝑖) ∈ ℝ+)
171	170	rpge0d 12988	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑖 ∈ (1...𝑁)) → 0 ≤ (1 / 𝑖))
172	2, 15, 171	fsumge0 15756	. . . . 5 ⊢ (𝑁 ∈ ℕ → 0 ≤ Σ𝑖 ∈ (1...𝑁)(1 / 𝑖))
173	49	a1i 11	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 0 ∈ ℝ)
174		log1 26574	. . . . . . 7 ⊢ (log‘1) = 0
175		1rp 12944	. . . . . . . . 9 ⊢ 1 ∈ ℝ+
176		logleb 26592	. . . . . . . . 9 ⊢ ((1 ∈ ℝ+ ∧ 𝑁 ∈ ℝ+) → (1 ≤ 𝑁 ↔ (log‘1) ≤ (log‘𝑁)))
177	175, 18, 176	sylancr 593	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (1 ≤ 𝑁 ↔ (log‘1) ≤ (log‘𝑁)))
178	165, 177	mpbid 233	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (log‘1) ≤ (log‘𝑁))
179	174, 178	eqbrtrrid 5115	. . . . . 6 ⊢ (𝑁 ∈ ℕ → 0 ≤ (log‘𝑁))
180	19	lep1d 12085	. . . . . 6 ⊢ (𝑁 ∈ ℕ → (log‘𝑁) ≤ ((log‘𝑁) + 1))
181	173, 19, 21, 179, 180	letrd 11301	. . . . 5 ⊢ (𝑁 ∈ ℕ → 0 ≤ ((log‘𝑁) + 1))
182	16, 21, 172, 181	le2sqd 14217	. . . 4 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖) ≤ ((log‘𝑁) + 1) ↔ (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) ≤ (((log‘𝑁) + 1)↑2)))
183	168, 182	mpbid 233	. . 3 ⊢ (𝑁 ∈ ℕ → (Σ𝑖 ∈ (1...𝑁)(1 / 𝑖)↑2) ≤ (((log‘𝑁) + 1)↑2))
184	12, 17, 22, 159, 183	letrd 11301	. 2 ⊢ (𝑁 ∈ ℕ → (2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (((log‘𝑁) + 1)↑2))
185	1	a1i 11	. . 3 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℝ)
186		2pos 12282	. . . 4 ⊢ 0 < 2
187	186	a1i 11	. . 3 ⊢ (𝑁 ∈ ℕ → 0 < 2)
188		lemuldiv2 12035	. . 3 ⊢ ((Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ∈ ℝ ∧ (((log‘𝑁) + 1)↑2) ∈ ℝ ∧ (2 ∈ ℝ ∧ 0 < 2)) → ((2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (((log‘𝑁) + 1)↑2) ↔ Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ ((((log‘𝑁) + 1)↑2) / 2)))
189	10, 22, 185, 187, 188	syl112anc 1382	. 2 ⊢ (𝑁 ∈ ℕ → ((2 · Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛)) ≤ (((log‘𝑁) + 1)↑2) ↔ Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ ((((log‘𝑁) + 1)↑2) / 2)))
190	184, 189	mpbid 233	1 ⊢ (𝑁 ∈ ℕ → Σ𝑛 ∈ (1...𝑁)((log‘𝑛) / 𝑛) ≤ ((((log‘𝑁) + 1)↑2) / 2))

Syntax hints:   → wi 4   ↔ wb 207   ∧ wa 396   = wceq 1547   ∈ wcel 2119   ⊆ wss 3890  ∅c0 4268   class class class wbr 5079  ‘cfv 6492  (class class class)co 7363  ℂcc 11034  ℝcr 11035  0cc0 11036  1c1 11037   + caddc 11039   · cmul 11041   < clt 11177   ≤ cle 11178   − cmin 11375   / cdiv 11805  ℕcn 12172  2c2 12234  ℕ₀cn0 12435  ℤcz 12522  ℤ_≥cuz 12786  ℝ⁺crp 12940  [,]cicc 13299  ...cfz 13459  ..^cfzo 13606  ⌊cfl 13747  ↑cexp 14021  Σcsu 15646  logclog 26543  γcem 26980

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-rep 5206  ax-sep 5225  ax-nul 5235  ax-pow 5301  ax-pr 5369  ax-un 7685  ax-inf2 9560  ax-cnex 11092  ax-resscn 11093  ax-1cn 11094  ax-icn 11095  ax-addcl 11096  ax-addrcl 11097  ax-mulcl 11098  ax-mulrcl 11099  ax-mulcom 11100  ax-addass 11101  ax-mulass 11102  ax-distr 11103  ax-i2m1 11104  ax-1ne0 11105  ax-1rid 11106  ax-rnegex 11107  ax-rrecex 11108  ax-cnre 11109  ax-pre-lttri 11110  ax-pre-lttrn 11111  ax-pre-ltadd 11112  ax-pre-mulgt0 11113  ax-pre-sup 11114  ax-addf 11115

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3or 1093  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ne 2936  df-nel 3040  df-ral 3055  df-rex 3065  df-rmo 3345  df-reu 3346  df-rab 3393  df-v 3434  df-sbc 3731  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-pss 3910  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-tp 4567  df-op 4569  df-uni 4846  df-int 4885  df-iun 4930  df-iin 4931  df-br 5080  df-opab 5142  df-mpt 5161  df-tr 5187  df-id 5520  df-eprel 5525  df-po 5533  df-so 5534  df-fr 5578  df-se 5579  df-we 5580  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638  df-pred 6259  df-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-isom 6501  df-riota 7320  df-ov 7366  df-oprab 7367  df-mpo 7368  df-of 7627  df-om 7814  df-1st 7938  df-2nd 7939  df-supp 8108  df-frecs 8228  df-wrecs 8259  df-recs 8308  df-rdg 8346  df-1o 8402  df-2o 8403  df-oadd 8406  df-er 8640  df-map 8772  df-pm 8773  df-ixp 8843  df-en 8891  df-dom 8892  df-sdom 8893  df-fin 8894  df-fsupp 9272  df-fi 9321  df-sup 9352  df-inf 9353  df-oi 9422  df-card 9861  df-pnf 11179  df-mnf 11180  df-xr 11181  df-ltxr 11182  df-le 11183  df-sub 11377  df-neg 11378  df-div 11806  df-nn 12173  df-2 12242  df-3 12243  df-4 12244  df-5 12245  df-6 12246  df-7 12247  df-8 12248  df-9 12249  df-n0 12436  df-xnn0 12509  df-z 12523  df-dec 12643  df-uz 12787  df-q 12897  df-rp 12941  df-xneg 13061  df-xadd 13062  df-xmul 13063  df-ioo 13300  df-ioc 13301  df-ico 13302  df-icc 13303  df-fz 13460  df-fzo 13607  df-fl 13749  df-mod 13827  df-seq 13962  df-exp 14022  df-fac 14234  df-bc 14263  df-hash 14291  df-shft 15027  df-cj 15059  df-re 15060  df-im 15061  df-sqrt 15195  df-abs 15196  df-limsup 15431  df-clim 15448  df-rlim 15449  df-sum 15647  df-ef 16030  df-e 16031  df-sin 16032  df-cos 16033  df-tan 16034  df-pi 16035  df-dvds 16220  df-struct 17115  df-sets 17132  df-slot 17150  df-ndx 17162  df-base 17178  df-ress 17199  df-plusg 17231  df-mulr 17232  df-starv 17233  df-sca 17234  df-vsca 17235  df-ip 17236  df-tset 17237  df-ple 17238  df-ds 17240  df-unif 17241  df-hom 17242  df-cco 17243  df-rest 17383  df-topn 17384  df-0g 17402  df-gsum 17403  df-topgen 17404  df-pt 17405  df-prds 17408  df-xrs 17464  df-qtop 17469  df-imas 17470  df-xps 17472  df-mre 17546  df-mrc 17547  df-acs 17549  df-mgm 18606  df-sgrp 18685  df-mnd 18701  df-submnd 18750  df-mulg 19042  df-cntz 19290  df-cmn 19755  df-psmet 21346  df-xmet 21347  df-met 21348  df-bl 21349  df-mopn 21350  df-fbas 21351  df-fg 21352  df-cnfld 21355  df-top 22884  df-topon 22901  df-topsp 22923  df-bases 22936  df-cld 23009  df-ntr 23010  df-cls 23011  df-nei 23088  df-lp 23126  df-perf 23127  df-cn 23217  df-cnp 23218  df-haus 23305  df-cmp 23377  df-tx 23552  df-hmeo 23745  df-fil 23836  df-fm 23928  df-flim 23929  df-flf 23930  df-xms 24310  df-ms 24311  df-tms 24312  df-cncf 24870  df-limc 25858  df-dv 25859  df-ulm 26367  df-log 26545  df-atan 26856  df-em 26981

This theorem is referenced by:  pntlemk  27594