Theorem logexprlim 26718

Description: The sum Σ𝑛 ≤ 𝑥, log↑𝑁(𝑥 / 𝑛) has the asymptotic expansion (𝑁!)𝑥 + 𝑜(𝑥). (More precisely, the omitted term has order 𝑂(log↑𝑁(𝑥) / 𝑥).) (Contributed by Mario Carneiro, 22-May-2016.)

Assertion

Ref	Expression
logexprlim	⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥)) ⇝𝑟 (!‘𝑁))

Distinct variable group:   𝑥,𝑛,𝑁

Proof of Theorem logexprlim

Dummy variables 𝑘 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		fzfid 13935	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (1...(⌊‘𝑥)) ∈ Fin)
2		simpr 486	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → 𝑥 ∈ ℝ+)
3		elfznn 13527	. . . . . . . . . 10 ⊢ (𝑛 ∈ (1...(⌊‘𝑥)) → 𝑛 ∈ ℕ)
4	3	nnrpd 13011	. . . . . . . . 9 ⊢ (𝑛 ∈ (1...(⌊‘𝑥)) → 𝑛 ∈ ℝ+)
5		rpdivcl 12996	. . . . . . . . 9 ⊢ ((𝑥 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) → (𝑥 / 𝑛) ∈ ℝ+)
6	2, 4, 5	syl2an 597	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → (𝑥 / 𝑛) ∈ ℝ+)
7	6	relogcld 26123	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → (log‘(𝑥 / 𝑛)) ∈ ℝ)
8		simpll 766	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → 𝑁 ∈ ℕ0)
9	7, 8	reexpcld 14125	. . . . . 6 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → ((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℝ)
10	1, 9	fsumrecl 15677	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℝ)
11		relogcl 26076	. . . . . . 7 ⊢ (𝑥 ∈ ℝ+ → (log‘𝑥) ∈ ℝ)
12		id 22	. . . . . . 7 ⊢ (𝑁 ∈ ℕ0 → 𝑁 ∈ ℕ0)
13		reexpcl 14041	. . . . . . 7 ⊢ (((log‘𝑥) ∈ ℝ ∧ 𝑁 ∈ ℕ0) → ((log‘𝑥)↑𝑁) ∈ ℝ)
14	11, 12, 13	syl2anr 598	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((log‘𝑥)↑𝑁) ∈ ℝ)
15		faccl 14240	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ0 → (!‘𝑁) ∈ ℕ)
16	15	adantr 482	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (!‘𝑁) ∈ ℕ)
17	16	nnred 12224	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (!‘𝑁) ∈ ℝ)
18		fzfid 13935	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (0...𝑁) ∈ Fin)
19	11	adantl 483	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (log‘𝑥) ∈ ℝ)
20		elfznn0 13591	. . . . . . . . . 10 ⊢ (𝑘 ∈ (0...𝑁) → 𝑘 ∈ ℕ0)
21		reexpcl 14041	. . . . . . . . . 10 ⊢ (((log‘𝑥) ∈ ℝ ∧ 𝑘 ∈ ℕ0) → ((log‘𝑥)↑𝑘) ∈ ℝ)
22	19, 20, 21	syl2an 597	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘𝑥)↑𝑘) ∈ ℝ)
23	20	adantl 483	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℕ0)
24	23	faccld 14241	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℕ)
25	22, 24	nndivred 12263	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℝ)
26	18, 25	fsumrecl 15677	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℝ)
27	17, 26	remulcld 11241	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) ∈ ℝ)
28	14, 27	resubcld 11639	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ ℝ)
29	10, 28	resubcld 11639	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) ∈ ℝ)
30	29, 2	rerpdivcld 13044	. . 3 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) ∈ ℝ)
31		rerpdivcl 13001	. . . 4 ⊢ (((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ ℝ ∧ 𝑥 ∈ ℝ+) → ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥) ∈ ℝ)
32	28, 31	sylancom 589	. . 3 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥) ∈ ℝ)
33		1red 11212	. . . 4 ⊢ (𝑁 ∈ ℕ0 → 1 ∈ ℝ)
34	15	nncnd 12225	. . . 4 ⊢ (𝑁 ∈ ℕ0 → (!‘𝑁) ∈ ℂ)
35		simpl 484	. . . . . . . . 9 ⊢ ((𝑘 = 𝑁 ∧ 𝑥 ∈ ℝ+) → 𝑘 = 𝑁)
36	35	oveq2d 7422	. . . . . . . 8 ⊢ ((𝑘 = 𝑁 ∧ 𝑥 ∈ ℝ+) → ((log‘𝑥)↑𝑘) = ((log‘𝑥)↑𝑁))
37	36	oveq1d 7421	. . . . . . 7 ⊢ ((𝑘 = 𝑁 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑘) / 𝑥) = (((log‘𝑥)↑𝑁) / 𝑥))
38	37	mpteq2dva 5248	. . . . . 6 ⊢ (𝑘 = 𝑁 → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑘) / 𝑥)) = (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑁) / 𝑥)))
39	38	breq1d 5158	. . . . 5 ⊢ (𝑘 = 𝑁 → ((𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑘) / 𝑥)) ⇝𝑟 0 ↔ (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑁) / 𝑥)) ⇝𝑟 0))
40	11	recnd 11239	. . . . . . . . 9 ⊢ (𝑥 ∈ ℝ+ → (log‘𝑥) ∈ ℂ)
41		id 22	. . . . . . . . 9 ⊢ (𝑘 ∈ ℕ0 → 𝑘 ∈ ℕ0)
42		cxpexp 26168	. . . . . . . . 9 ⊢ (((log‘𝑥) ∈ ℂ ∧ 𝑘 ∈ ℕ0) → ((log‘𝑥)↑𝑐𝑘) = ((log‘𝑥)↑𝑘))
43	40, 41, 42	syl2anr 598	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((log‘𝑥)↑𝑐𝑘) = ((log‘𝑥)↑𝑘))
44		rpcn 12981	. . . . . . . . . 10 ⊢ (𝑥 ∈ ℝ+ → 𝑥 ∈ ℂ)
45	44	adantl 483	. . . . . . . . 9 ⊢ ((𝑘 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → 𝑥 ∈ ℂ)
46	45	cxp1d 26206	. . . . . . . 8 ⊢ ((𝑘 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (𝑥↑𝑐1) = 𝑥)
47	43, 46	oveq12d 7424	. . . . . . 7 ⊢ ((𝑘 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑐𝑘) / (𝑥↑𝑐1)) = (((log‘𝑥)↑𝑘) / 𝑥))
48	47	mpteq2dva 5248	. . . . . 6 ⊢ (𝑘 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑐𝑘) / (𝑥↑𝑐1))) = (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑘) / 𝑥)))
49		nn0cn 12479	. . . . . . 7 ⊢ (𝑘 ∈ ℕ0 → 𝑘 ∈ ℂ)
50		1rp 12975	. . . . . . 7 ⊢ 1 ∈ ℝ+
51		cxploglim2 26473	. . . . . . 7 ⊢ ((𝑘 ∈ ℂ ∧ 1 ∈ ℝ+) → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑐𝑘) / (𝑥↑𝑐1))) ⇝𝑟 0)
52	49, 50, 51	sylancl 587	. . . . . 6 ⊢ (𝑘 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑐𝑘) / (𝑥↑𝑐1))) ⇝𝑟 0)
53	48, 52	eqbrtrrd 5172	. . . . 5 ⊢ (𝑘 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑘) / 𝑥)) ⇝𝑟 0)
54	39, 53	vtoclga 3566	. . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑁) / 𝑥)) ⇝𝑟 0)
55		rerpdivcl 13001	. . . . . 6 ⊢ ((((log‘𝑥)↑𝑁) ∈ ℝ ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℝ)
56	14, 55	sylancom 589	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℝ)
57	56	recnd 11239	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℂ)
58	10	recnd 11239	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℂ)
59	14	recnd 11239	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((log‘𝑥)↑𝑁) ∈ ℂ)
60	34	adantr 482	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (!‘𝑁) ∈ ℂ)
61	26	recnd 11239	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ)
62	60, 61	mulcld 11231	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) ∈ ℂ)
63	59, 62	subcld 11568	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ ℂ)
64	58, 63	subcld 11568	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) ∈ ℂ)
65		rpcnne0 12989	. . . . . . 7 ⊢ (𝑥 ∈ ℝ+ → (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0))
66	65	adantl 483	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0))
67	66	simpld 496	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → 𝑥 ∈ ℂ)
68	66	simprd 497	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → 𝑥 ≠ 0)
69	64, 67, 68	divcld 11987	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) ∈ ℂ)
70	69	adantrr 716	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) ∈ ℂ)
71	15	adantr 482	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (!‘𝑁) ∈ ℕ)
72	71	nncnd 12225	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (!‘𝑁) ∈ ℂ)
73	70, 72	subcld 11568	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) ∈ ℂ)
74	73	abscld 15380	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) ∈ ℝ)
75	56	adantrr 716	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℝ)
76	75	recnd 11239	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℂ)
77	76	abscld 15380	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((log‘𝑥)↑𝑁) / 𝑥)) ∈ ℝ)
78		ioorp 13399	. . . . . . . . . 10 ⊢ (0(,)+∞) = ℝ+
79	78	eqcomi 2742	. . . . . . . . 9 ⊢ ℝ+ = (0(,)+∞)
80		nnuz 12862	. . . . . . . . 9 ⊢ ℕ = (ℤ≥‘1)
81		1z 12589	. . . . . . . . . 10 ⊢ 1 ∈ ℤ
82	81	a1i 11	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ∈ ℤ)
83		1red 11212	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ∈ ℝ)
84		1re 11211	. . . . . . . . . . 11 ⊢ 1 ∈ ℝ
85		1nn0 12485	. . . . . . . . . . 11 ⊢ 1 ∈ ℕ0
86	84, 85	nn0addge1i 12517	. . . . . . . . . 10 ⊢ 1 ≤ (1 + 1)
87	86	a1i 11	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ≤ (1 + 1))
88		0red 11214	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 0 ∈ ℝ)
89	71	adantr 482	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (!‘𝑁) ∈ ℕ)
90	89	nnred 12224	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (!‘𝑁) ∈ ℝ)
91		rpre 12979	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ ℝ+ → 𝑦 ∈ ℝ)
92	91	adantl 483	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → 𝑦 ∈ ℝ)
93		fzfid 13935	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (0...𝑁) ∈ Fin)
94		simprl 770	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ∈ ℝ+)
95		rpdivcl 12996	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ ℝ+ ∧ 𝑦 ∈ ℝ+) → (𝑥 / 𝑦) ∈ ℝ+)
96	94, 95	sylan 581	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (𝑥 / 𝑦) ∈ ℝ+)
97	96	relogcld 26123	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (log‘(𝑥 / 𝑦)) ∈ ℝ)
98		reexpcl 14041	. . . . . . . . . . . . . 14 ⊢ (((log‘(𝑥 / 𝑦)) ∈ ℝ ∧ 𝑘 ∈ ℕ0) → ((log‘(𝑥 / 𝑦))↑𝑘) ∈ ℝ)
99	97, 20, 98	syl2an 597	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘(𝑥 / 𝑦))↑𝑘) ∈ ℝ)
100	20	adantl 483	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℕ0)
101	100	faccld 14241	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℕ)
102	99, 101	nndivred 12263	. . . . . . . . . . . 12 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) ∈ ℝ)
103	93, 102	fsumrecl 15677	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) ∈ ℝ)
104	92, 103	remulcld 11241	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) ∈ ℝ)
105	90, 104	remulcld 11241	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))) ∈ ℝ)
106		simpll 766	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → 𝑁 ∈ ℕ0)
107	97, 106	reexpcld 14125	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → ((log‘(𝑥 / 𝑦))↑𝑁) ∈ ℝ)
108		nnrp 12982	. . . . . . . . . 10 ⊢ (𝑦 ∈ ℕ → 𝑦 ∈ ℝ+)
109	108, 107	sylan2 594	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℕ) → ((log‘(𝑥 / 𝑦))↑𝑁) ∈ ℝ)
110		reelprrecn 11199	. . . . . . . . . . . 12 ⊢ ℝ ∈ {ℝ, ℂ}
111	110	a1i 11	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ℝ ∈ {ℝ, ℂ})
112	104	recnd 11239	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) ∈ ℂ)
113	107, 89	nndivred 12263	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁)) ∈ ℝ)
114		simpl 484	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑁 ∈ ℕ0)
115		advlogexp 26155	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℝ+ ∧ 𝑁 ∈ ℕ0) → (ℝ D (𝑦 ∈ ℝ+ ↦ (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))) = (𝑦 ∈ ℝ+ ↦ (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁))))
116	94, 114, 115	syl2anc 585	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (ℝ D (𝑦 ∈ ℝ+ ↦ (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))) = (𝑦 ∈ ℝ+ ↦ (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁))))
117	111, 112, 113, 116, 72	dvmptcmul 25473	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (ℝ D (𝑦 ∈ ℝ+ ↦ ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))))) = (𝑦 ∈ ℝ+ ↦ ((!‘𝑁) · (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁)))))
118	107	recnd 11239	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → ((log‘(𝑥 / 𝑦))↑𝑁) ∈ ℂ)
119	72	adantr 482	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (!‘𝑁) ∈ ℂ)
120	71	nnne0d 12259	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (!‘𝑁) ≠ 0)
121	120	adantr 482	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → (!‘𝑁) ≠ 0)
122	118, 119, 121	divcan2d 11989	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → ((!‘𝑁) · (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁))) = ((log‘(𝑥 / 𝑦))↑𝑁))
123	122	mpteq2dva 5248	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑦 ∈ ℝ+ ↦ ((!‘𝑁) · (((log‘(𝑥 / 𝑦))↑𝑁) / (!‘𝑁)))) = (𝑦 ∈ ℝ+ ↦ ((log‘(𝑥 / 𝑦))↑𝑁)))
124	117, 123	eqtrd 2773	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (ℝ D (𝑦 ∈ ℝ+ ↦ ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))))) = (𝑦 ∈ ℝ+ ↦ ((log‘(𝑥 / 𝑦))↑𝑁)))
125		oveq2 7414	. . . . . . . . . . 11 ⊢ (𝑦 = 𝑛 → (𝑥 / 𝑦) = (𝑥 / 𝑛))
126	125	fveq2d 6893	. . . . . . . . . 10 ⊢ (𝑦 = 𝑛 → (log‘(𝑥 / 𝑦)) = (log‘(𝑥 / 𝑛)))
127	126	oveq1d 7421	. . . . . . . . 9 ⊢ (𝑦 = 𝑛 → ((log‘(𝑥 / 𝑦))↑𝑁) = ((log‘(𝑥 / 𝑛))↑𝑁))
128	94	rpxrd 13014	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ∈ ℝ*)
129		simp1rl 1239	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑥 ∈ ℝ+)
130		simp2r 1201	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑛 ∈ ℝ+)
131	129, 130	rpdivcld 13030	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (𝑥 / 𝑛) ∈ ℝ+)
132	131	relogcld 26123	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (log‘(𝑥 / 𝑛)) ∈ ℝ)
133		simp2l 1200	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑦 ∈ ℝ+)
134	129, 133	rpdivcld 13030	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (𝑥 / 𝑦) ∈ ℝ+)
135	134	relogcld 26123	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (log‘(𝑥 / 𝑦)) ∈ ℝ)
136		simp1l 1198	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑁 ∈ ℕ0)
137		log1 26086	. . . . . . . . . . 11 ⊢ (log‘1) = 0
138	130	rpcnd 13015	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑛 ∈ ℂ)
139	138	mullidd 11229	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (1 · 𝑛) = 𝑛)
140		simp33 1212	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑛 ≤ 𝑥)
141	139, 140	eqbrtrd 5170	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (1 · 𝑛) ≤ 𝑥)
142		1red 11212	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 1 ∈ ℝ)
143	129	rpred 13013	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑥 ∈ ℝ)
144	142, 143, 130	lemuldivd 13062	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → ((1 · 𝑛) ≤ 𝑥 ↔ 1 ≤ (𝑥 / 𝑛)))
145	141, 144	mpbid 231	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 1 ≤ (𝑥 / 𝑛))
146		logleb 26103	. . . . . . . . . . . . 13 ⊢ ((1 ∈ ℝ+ ∧ (𝑥 / 𝑛) ∈ ℝ+) → (1 ≤ (𝑥 / 𝑛) ↔ (log‘1) ≤ (log‘(𝑥 / 𝑛))))
147	50, 131, 146	sylancr 588	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (1 ≤ (𝑥 / 𝑛) ↔ (log‘1) ≤ (log‘(𝑥 / 𝑛))))
148	145, 147	mpbid 231	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (log‘1) ≤ (log‘(𝑥 / 𝑛)))
149	137, 148	eqbrtrrid 5184	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 0 ≤ (log‘(𝑥 / 𝑛)))
150		simp32 1211	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → 𝑦 ≤ 𝑛)
151	133, 130, 129	lediv2d 13037	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (𝑦 ≤ 𝑛 ↔ (𝑥 / 𝑛) ≤ (𝑥 / 𝑦)))
152	150, 151	mpbid 231	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (𝑥 / 𝑛) ≤ (𝑥 / 𝑦))
153	131, 134	logled 26127	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → ((𝑥 / 𝑛) ≤ (𝑥 / 𝑦) ↔ (log‘(𝑥 / 𝑛)) ≤ (log‘(𝑥 / 𝑦))))
154	152, 153	mpbid 231	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → (log‘(𝑥 / 𝑛)) ≤ (log‘(𝑥 / 𝑦)))
155		leexp1a 14137	. . . . . . . . . 10 ⊢ ((((log‘(𝑥 / 𝑛)) ∈ ℝ ∧ (log‘(𝑥 / 𝑦)) ∈ ℝ ∧ 𝑁 ∈ ℕ0) ∧ (0 ≤ (log‘(𝑥 / 𝑛)) ∧ (log‘(𝑥 / 𝑛)) ≤ (log‘(𝑥 / 𝑦)))) → ((log‘(𝑥 / 𝑛))↑𝑁) ≤ ((log‘(𝑥 / 𝑦))↑𝑁))
156	132, 135, 136, 149, 154, 155	syl32anc 1379	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 𝑛 ∈ ℝ+) ∧ (1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑛 ∧ 𝑛 ≤ 𝑥)) → ((log‘(𝑥 / 𝑛))↑𝑁) ≤ ((log‘(𝑥 / 𝑦))↑𝑁))
157		eqid 2733	. . . . . . . . 9 ⊢ (𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))))) = (𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))
158	96	3ad2antr1 1189	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (𝑥 / 𝑦) ∈ ℝ+)
159	158	relogcld 26123	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (log‘(𝑥 / 𝑦)) ∈ ℝ)
160		simpll 766	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 𝑁 ∈ ℕ0)
161		rpcn 12981	. . . . . . . . . . . . . . . . 17 ⊢ (𝑦 ∈ ℝ+ → 𝑦 ∈ ℂ)
162	161	adantl 483	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 ∈ ℝ+) → 𝑦 ∈ ℂ)
163	162	3ad2antr1 1189	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 𝑦 ∈ ℂ)
164	163	mullidd 11229	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (1 · 𝑦) = 𝑦)
165		simpr3 1197	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 𝑦 ≤ 𝑥)
166	164, 165	eqbrtrd 5170	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (1 · 𝑦) ≤ 𝑥)
167		1red 11212	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 1 ∈ ℝ)
168	94	rpred 13013	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ∈ ℝ)
169	168	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 𝑥 ∈ ℝ)
170		simpr1 1195	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 𝑦 ∈ ℝ+)
171	167, 169, 170	lemuldivd 13062	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → ((1 · 𝑦) ≤ 𝑥 ↔ 1 ≤ (𝑥 / 𝑦)))
172	166, 171	mpbid 231	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 1 ≤ (𝑥 / 𝑦))
173		logleb 26103	. . . . . . . . . . . . 13 ⊢ ((1 ∈ ℝ+ ∧ (𝑥 / 𝑦) ∈ ℝ+) → (1 ≤ (𝑥 / 𝑦) ↔ (log‘1) ≤ (log‘(𝑥 / 𝑦))))
174	50, 158, 173	sylancr 588	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (1 ≤ (𝑥 / 𝑦) ↔ (log‘1) ≤ (log‘(𝑥 / 𝑦))))
175	172, 174	mpbid 231	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → (log‘1) ≤ (log‘(𝑥 / 𝑦)))
176	137, 175	eqbrtrrid 5184	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 0 ≤ (log‘(𝑥 / 𝑦)))
177	159, 160, 176	expge0d 14126	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ (𝑦 ∈ ℝ+ ∧ 1 ≤ 𝑦 ∧ 𝑦 ≤ 𝑥)) → 0 ≤ ((log‘(𝑥 / 𝑦))↑𝑁))
178	50	a1i 11	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ∈ ℝ+)
179		1le1 11839	. . . . . . . . . 10 ⊢ 1 ≤ 1
180	179	a1i 11	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ≤ 1)
181		simprr 772	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ≤ 𝑥)
182	168	leidd 11777	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ≤ 𝑥)
183	79, 80, 82, 83, 87, 88, 105, 107, 109, 124, 127, 128, 156, 157, 177, 178, 94, 180, 181, 182	dvfsumlem4 25538	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) − ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1))) ≤ ⦋1 / 𝑦⦌((log‘(𝑥 / 𝑦))↑𝑁))
184		fzfid 13935	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (1...(⌊‘𝑥)) ∈ Fin)
185	94, 4, 5	syl2an 597	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → (𝑥 / 𝑛) ∈ ℝ+)
186	185	relogcld 26123	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → (log‘(𝑥 / 𝑛)) ∈ ℝ)
187		simpll 766	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → 𝑁 ∈ ℕ0)
188	186, 187	reexpcld 14125	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑛 ∈ (1...(⌊‘𝑥))) → ((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℝ)
189	184, 188	fsumrecl 15677	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℝ)
190	189	recnd 11239	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℂ)
191	94	rpcnd 13015	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ∈ ℂ)
192	72, 191	mulcld 11231	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((!‘𝑁) · 𝑥) ∈ ℂ)
193	11	ad2antrl 727	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (log‘𝑥) ∈ ℝ)
194	193	recnd 11239	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (log‘𝑥) ∈ ℂ)
195	194, 114	expcld 14108	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((log‘𝑥)↑𝑁) ∈ ℂ)
196		fzfid 13935	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (0...𝑁) ∈ Fin)
197	193, 20, 21	syl2an 597	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘𝑥)↑𝑘) ∈ ℝ)
198	20	adantl 483	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℕ0)
199	198	faccld 14241	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℕ)
200	197, 199	nndivred 12263	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℝ)
201	200	recnd 11239	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ)
202	196, 201	fsumcl 15676	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ)
203	72, 202	mulcld 11231	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) ∈ ℂ)
204	195, 203	subcld 11568	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ ℂ)
205	190, 192, 204	sub32d 11600	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · 𝑥)) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) − ((!‘𝑁) · 𝑥)))
206		eqidd 2734	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))))) = (𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))))))
207		simpr 486	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → 𝑦 = 𝑥)
208	207	fveq2d 6893	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (⌊‘𝑦) = (⌊‘𝑥))
209	208	oveq2d 7422	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (1...(⌊‘𝑦)) = (1...(⌊‘𝑥)))
210	209	sumeq1d 15644	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) = Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁))
211		oveq2 7414	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑦 = 𝑥 → (𝑥 / 𝑦) = (𝑥 / 𝑥))
212	65	ad2antrl 727	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0))
213		divid 11898	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑥 ∈ ℂ ∧ 𝑥 ≠ 0) → (𝑥 / 𝑥) = 1)
214	212, 213	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑥 / 𝑥) = 1)
215	211, 214	sylan9eqr 2795	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (𝑥 / 𝑦) = 1)
216	215	adantr 482	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 / 𝑦) = 1)
217	216	fveq2d 6893	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ (0...𝑁)) → (log‘(𝑥 / 𝑦)) = (log‘1))
218	217, 137	eqtrdi 2789	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ (0...𝑁)) → (log‘(𝑥 / 𝑦)) = 0)
219	218	oveq1d 7421	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘(𝑥 / 𝑦))↑𝑘) = (0↑𝑘))
220	219	oveq1d 7421	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = ((0↑𝑘) / (!‘𝑘)))
221	220	sumeq2dv 15646	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = Σ𝑘 ∈ (0...𝑁)((0↑𝑘) / (!‘𝑘)))
222		nn0uz 12861	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ℕ0 = (ℤ≥‘0)
223	114, 222	eleqtrdi 2844	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑁 ∈ (ℤ≥‘0))
224		eluzfz1 13505	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑁 ∈ (ℤ≥‘0) → 0 ∈ (0...𝑁))
225	223, 224	syl 17	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 0 ∈ (0...𝑁))
226	225	adantr 482	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → 0 ∈ (0...𝑁))
227	226	snssd 4812	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → {0} ⊆ (0...𝑁))
228		elsni 4645	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑘 ∈ {0} → 𝑘 = 0)
229	228	adantl 483	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ {0}) → 𝑘 = 0)
230		oveq2 7414	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑘 = 0 → (0↑𝑘) = (0↑0))
231		0exp0e1 14029	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (0↑0) = 1
232	230, 231	eqtrdi 2789	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑘 = 0 → (0↑𝑘) = 1)
233		fveq2 6889	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑘 = 0 → (!‘𝑘) = (!‘0))
234		fac0 14233	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (!‘0) = 1
235	233, 234	eqtrdi 2789	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑘 = 0 → (!‘𝑘) = 1)
236	232, 235	oveq12d 7424	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑘 = 0 → ((0↑𝑘) / (!‘𝑘)) = (1 / 1))
237		1div1e1 11901	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (1 / 1) = 1
238	236, 237	eqtrdi 2789	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑘 = 0 → ((0↑𝑘) / (!‘𝑘)) = 1)
239	229, 238	syl 17	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ {0}) → ((0↑𝑘) / (!‘𝑘)) = 1)
240		ax-1cn 11165	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 1 ∈ ℂ
241	239, 240	eqeltrdi 2842	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ {0}) → ((0↑𝑘) / (!‘𝑘)) ∈ ℂ)
242		eldifi 4126	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑘 ∈ ((0...𝑁) ∖ {0}) → 𝑘 ∈ (0...𝑁))
243	242	adantl 483	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → 𝑘 ∈ (0...𝑁))
244	243, 20	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → 𝑘 ∈ ℕ0)
245		eldifsni 4793	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑘 ∈ ((0...𝑁) ∖ {0}) → 𝑘 ≠ 0)
246	245	adantl 483	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → 𝑘 ≠ 0)
247		eldifsn 4790	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑘 ∈ (ℕ0 ∖ {0}) ↔ (𝑘 ∈ ℕ0 ∧ 𝑘 ≠ 0))
248	244, 246, 247	sylanbrc 584	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → 𝑘 ∈ (ℕ0 ∖ {0}))
249		dfn2 12482	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ℕ = (ℕ0 ∖ {0})
250	248, 249	eleqtrrdi 2845	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → 𝑘 ∈ ℕ)
251	250	0expd 14101	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → (0↑𝑘) = 0)
252	251	oveq1d 7421	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → ((0↑𝑘) / (!‘𝑘)) = (0 / (!‘𝑘)))
253	244	faccld 14241	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → (!‘𝑘) ∈ ℕ)
254	253	nncnd 12225	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → (!‘𝑘) ∈ ℂ)
255	253	nnne0d 12259	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → (!‘𝑘) ≠ 0)
256	254, 255	div0d 11986	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → (0 / (!‘𝑘)) = 0)
257	252, 256	eqtrd 2773	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) ∧ 𝑘 ∈ ((0...𝑁) ∖ {0})) → ((0↑𝑘) / (!‘𝑘)) = 0)
258		fzfid 13935	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (0...𝑁) ∈ Fin)
259	227, 241, 257, 258	fsumss 15668	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → Σ𝑘 ∈ {0} ((0↑𝑘) / (!‘𝑘)) = Σ𝑘 ∈ (0...𝑁)((0↑𝑘) / (!‘𝑘)))
260	221, 259	eqtr4d 2776	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = Σ𝑘 ∈ {0} ((0↑𝑘) / (!‘𝑘)))
261		0cn 11203	. . . . . . . . . . . . . . . . . . 19 ⊢ 0 ∈ ℂ
262	238	sumsn 15689	. . . . . . . . . . . . . . . . . . 19 ⊢ ((0 ∈ ℂ ∧ 1 ∈ ℂ) → Σ𝑘 ∈ {0} ((0↑𝑘) / (!‘𝑘)) = 1)
263	261, 240, 262	mp2an 691	. . . . . . . . . . . . . . . . . 18 ⊢ Σ𝑘 ∈ {0} ((0↑𝑘) / (!‘𝑘)) = 1
264	260, 263	eqtrdi 2789	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = 1)
265	207, 264	oveq12d 7424	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) = (𝑥 · 1))
266	191	mulridd 11228	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑥 · 1) = 𝑥)
267	266	adantr 482	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (𝑥 · 1) = 𝑥)
268	265, 267	eqtrd 2773	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) = 𝑥)
269	268	oveq2d 7422	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))) = ((!‘𝑁) · 𝑥))
270	210, 269	oveq12d 7424	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 𝑥) → (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))) = (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · 𝑥)))
271		ovexd 7441	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · 𝑥)) ∈ V)
272	206, 270, 94, 271	fvmptd 7003	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) = (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · 𝑥)))
273		simpr 486	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → 𝑦 = 1)
274	273	fveq2d 6893	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (⌊‘𝑦) = (⌊‘1))
275		flid 13770	. . . . . . . . . . . . . . . . . . 19 ⊢ (1 ∈ ℤ → (⌊‘1) = 1)
276	81, 275	ax-mp 5	. . . . . . . . . . . . . . . . . 18 ⊢ (⌊‘1) = 1
277	274, 276	eqtrdi 2789	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (⌊‘𝑦) = 1)
278	277	oveq2d 7422	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (1...(⌊‘𝑦)) = (1...1))
279	278	sumeq1d 15644	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) = Σ𝑛 ∈ (1...1)((log‘(𝑥 / 𝑛))↑𝑁))
280	191	div1d 11979	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑥 / 1) = 𝑥)
281	280	adantr 482	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (𝑥 / 1) = 𝑥)
282	281	fveq2d 6893	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (log‘(𝑥 / 1)) = (log‘𝑥))
283	282	oveq1d 7421	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → ((log‘(𝑥 / 1))↑𝑁) = ((log‘𝑥)↑𝑁))
284	195	adantr 482	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → ((log‘𝑥)↑𝑁) ∈ ℂ)
285	283, 284	eqeltrd 2834	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → ((log‘(𝑥 / 1))↑𝑁) ∈ ℂ)
286		oveq2 7414	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑛 = 1 → (𝑥 / 𝑛) = (𝑥 / 1))
287	286	fveq2d 6893	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑛 = 1 → (log‘(𝑥 / 𝑛)) = (log‘(𝑥 / 1)))
288	287	oveq1d 7421	. . . . . . . . . . . . . . . . 17 ⊢ (𝑛 = 1 → ((log‘(𝑥 / 𝑛))↑𝑁) = ((log‘(𝑥 / 1))↑𝑁))
289	288	fsum1 15690	. . . . . . . . . . . . . . . 16 ⊢ ((1 ∈ ℤ ∧ ((log‘(𝑥 / 1))↑𝑁) ∈ ℂ) → Σ𝑛 ∈ (1...1)((log‘(𝑥 / 𝑛))↑𝑁) = ((log‘(𝑥 / 1))↑𝑁))
290	81, 285, 289	sylancr 588	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → Σ𝑛 ∈ (1...1)((log‘(𝑥 / 𝑛))↑𝑁) = ((log‘(𝑥 / 1))↑𝑁))
291	279, 290, 283	3eqtrd 2777	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) = ((log‘𝑥)↑𝑁))
292	273	oveq2d 7422	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (𝑥 / 𝑦) = (𝑥 / 1))
293	292, 281	eqtrd 2773	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (𝑥 / 𝑦) = 𝑥)
294	293	fveq2d 6893	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (log‘(𝑥 / 𝑦)) = (log‘𝑥))
295	294	adantr 482	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) ∧ 𝑘 ∈ (0...𝑁)) → (log‘(𝑥 / 𝑦)) = (log‘𝑥))
296	295	oveq1d 7421	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘(𝑥 / 𝑦))↑𝑘) = ((log‘𝑥)↑𝑘))
297	296	oveq1d 7421	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = (((log‘𝑥)↑𝑘) / (!‘𝑘)))
298	297	sumeq2dv 15646	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)) = Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))
299	273, 298	oveq12d 7424	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) = (1 · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))
300	202	adantr 482	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ)
301	300	mullidd 11229	. . . . . . . . . . . . . . . 16 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (1 · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) = Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))
302	299, 301	eqtrd 2773	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))) = Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))
303	302	oveq2d 7422	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘)))) = ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))
304	291, 303	oveq12d 7424	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))) = (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))))
305		ovexd 7441	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ V)
306	206, 304, 178, 305	fvmptd 7003	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1) = (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))))
307	272, 306	oveq12d 7424	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) − ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1)) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · 𝑥)) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))))
308	70, 72, 191	subdird 11668	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) · 𝑥) = ((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) · 𝑥) − ((!‘𝑁) · 𝑥)))
309	64	adantrr 716	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) ∈ ℂ)
310	212	simprd 497	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 𝑥 ≠ 0)
311	309, 191, 310	divcan1d 11988	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) · 𝑥) = (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))))
312	311	oveq1d 7421	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) · 𝑥) − ((!‘𝑁) · 𝑥)) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) − ((!‘𝑁) · 𝑥)))
313	308, 312	eqtrd 2773	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) · 𝑥) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) − ((!‘𝑁) · 𝑥)))
314	205, 307, 313	3eqtr4d 2783	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) − ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1)) = ((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) · 𝑥))
315	314	fveq2d 6893	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) − ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1))) = (abs‘((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) · 𝑥)))
316	73, 191	absmuld 15398	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘((((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁)) · 𝑥)) = ((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · (abs‘𝑥)))
317		rprege0 12986	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℝ+ → (𝑥 ∈ ℝ ∧ 0 ≤ 𝑥))
318	317	ad2antrl 727	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (𝑥 ∈ ℝ ∧ 0 ≤ 𝑥))
319		absid 15240	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℝ ∧ 0 ≤ 𝑥) → (abs‘𝑥) = 𝑥)
320	318, 319	syl 17	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘𝑥) = 𝑥)
321	320	oveq2d 7422	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · (abs‘𝑥)) = ((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · 𝑥))
322	315, 316, 321	3eqtrd 2777	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘𝑥) − ((𝑦 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑦))((log‘(𝑥 / 𝑛))↑𝑁) − ((!‘𝑁) · (𝑦 · Σ𝑘 ∈ (0...𝑁)(((log‘(𝑥 / 𝑦))↑𝑘) / (!‘𝑘))))))‘1))) = ((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · 𝑥))
323		1cnd 11206	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → 1 ∈ ℂ)
324	294	oveq1d 7421	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) ∧ 𝑦 = 1) → ((log‘(𝑥 / 𝑦))↑𝑁) = ((log‘𝑥)↑𝑁))
325	323, 324	csbied 3931	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ⦋1 / 𝑦⦌((log‘(𝑥 / 𝑦))↑𝑁) = ((log‘𝑥)↑𝑁))
326	183, 322, 325	3brtr3d 5179	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · 𝑥) ≤ ((log‘𝑥)↑𝑁))
327	14	adantrr 716	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((log‘𝑥)↑𝑁) ∈ ℝ)
328	74, 327, 94	lemuldivd 13062	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) · 𝑥) ≤ ((log‘𝑥)↑𝑁) ↔ (abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) ≤ (((log‘𝑥)↑𝑁) / 𝑥)))
329	326, 328	mpbid 231	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) ≤ (((log‘𝑥)↑𝑁) / 𝑥))
330	75	leabsd 15358	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) / 𝑥) ≤ (abs‘(((log‘𝑥)↑𝑁) / 𝑥)))
331	74, 75, 77, 329, 330	letrd 11368	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) ≤ (abs‘(((log‘𝑥)↑𝑁) / 𝑥)))
332	57	adantrr 716	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (((log‘𝑥)↑𝑁) / 𝑥) ∈ ℂ)
333	332	subid1d 11557	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → ((((log‘𝑥)↑𝑁) / 𝑥) − 0) = (((log‘𝑥)↑𝑁) / 𝑥))
334	333	fveq2d 6893	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘((((log‘𝑥)↑𝑁) / 𝑥) − 0)) = (abs‘(((log‘𝑥)↑𝑁) / 𝑥)))
335	331, 334	breqtrrd 5176	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 1 ≤ 𝑥)) → (abs‘(((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) − (!‘𝑁))) ≤ (abs‘((((log‘𝑥)↑𝑁) / 𝑥) − 0)))
336	33, 34, 54, 57, 69, 335	rlimsqzlem 15592	. . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥)) ⇝𝑟 (!‘𝑁))
337		divsubdir 11905	. . . . . 6 ⊢ ((((log‘𝑥)↑𝑁) ∈ ℂ ∧ ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) ∈ ℂ ∧ (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0)) → ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥) = ((((log‘𝑥)↑𝑁) / 𝑥) − (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥)))
338	59, 62, 66, 337	syl3anc 1372	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥) = ((((log‘𝑥)↑𝑁) / 𝑥) − (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥)))
339	338	mpteq2dva 5248	. . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) = (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑁) / 𝑥) − (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥))))
340		rerpdivcl 13001	. . . . . . 7 ⊢ ((((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) ∈ ℝ ∧ 𝑥 ∈ ℝ+) → (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥) ∈ ℝ)
341	27, 340	sylancom 589	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥) ∈ ℝ)
342		divass 11887	. . . . . . . . . 10 ⊢ (((!‘𝑁) ∈ ℂ ∧ Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ ∧ (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0)) → (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥) = ((!‘𝑁) · (Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥)))
343	60, 61, 66, 342	syl3anc 1372	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥) = ((!‘𝑁) · (Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥)))
344	25	recnd 11239	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘𝑥)↑𝑘) / (!‘𝑘)) ∈ ℂ)
345	18, 67, 344, 68	fsumdivc 15729	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥) = Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥))
346	22	recnd 11239	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((log‘𝑥)↑𝑘) ∈ ℂ)
347	24	nnrpd 13011	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℝ+)
348	347	rpcnne0d 13022	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((!‘𝑘) ∈ ℂ ∧ (!‘𝑘) ≠ 0))
349	66	adantr 482	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0))
350		divdiv32 11919	. . . . . . . . . . . . 13 ⊢ ((((log‘𝑥)↑𝑘) ∈ ℂ ∧ ((!‘𝑘) ∈ ℂ ∧ (!‘𝑘) ≠ 0) ∧ (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0)) → ((((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥) = ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))
351	346, 348, 349, 350	syl3anc 1372	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥) = ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))
352	351	sumeq2dv 15646	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥) = Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))
353	345, 352	eqtrd 2773	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥) = Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))
354	353	oveq2d 7422	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((!‘𝑁) · (Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)) / 𝑥)) = ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))))
355	343, 354	eqtrd 2773	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥) = ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))))
356	355	mpteq2dva 5248	. . . . . . 7 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥)) = (𝑥 ∈ ℝ+ ↦ ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))))
357	2	adantr 482	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → 𝑥 ∈ ℝ+)
358	22, 357	rerpdivcld 13044	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → (((log‘𝑥)↑𝑘) / 𝑥) ∈ ℝ)
359	358, 24	nndivred 12263	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ (0...𝑁)) → ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)) ∈ ℝ)
360	18, 359	fsumrecl 15677	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)) ∈ ℝ)
361		rpssre 12978	. . . . . . . . . 10 ⊢ ℝ+ ⊆ ℝ
362		rlimconst 15485	. . . . . . . . . 10 ⊢ ((ℝ+ ⊆ ℝ ∧ (!‘𝑁) ∈ ℂ) → (𝑥 ∈ ℝ+ ↦ (!‘𝑁)) ⇝𝑟 (!‘𝑁))
363	361, 34, 362	sylancr 588	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (!‘𝑁)) ⇝𝑟 (!‘𝑁))
364	361	a1i 11	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ0 → ℝ+ ⊆ ℝ)
365		fzfid 13935	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ0 → (0...𝑁) ∈ Fin)
366	359	anasss 468	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ (𝑥 ∈ ℝ+ ∧ 𝑘 ∈ (0...𝑁))) → ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)) ∈ ℝ)
367	358	an32s 651	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) ∧ 𝑥 ∈ ℝ+) → (((log‘𝑥)↑𝑘) / 𝑥) ∈ ℝ)
368	20	adantl 483	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → 𝑘 ∈ ℕ0)
369	368	faccld 14241	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℕ)
370	369	nnred 12224	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℝ)
371	370	adantr 482	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) ∧ 𝑥 ∈ ℝ+) → (!‘𝑘) ∈ ℝ)
372	368, 53	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 ∈ ℝ+ ↦ (((log‘𝑥)↑𝑘) / 𝑥)) ⇝𝑟 0)
373	369	nncnd 12225	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ∈ ℂ)
374		rlimconst 15485	. . . . . . . . . . . . . 14 ⊢ ((ℝ+ ⊆ ℝ ∧ (!‘𝑘) ∈ ℂ) → (𝑥 ∈ ℝ+ ↦ (!‘𝑘)) ⇝𝑟 (!‘𝑘))
375	361, 373, 374	sylancr 588	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 ∈ ℝ+ ↦ (!‘𝑘)) ⇝𝑟 (!‘𝑘))
376	369	nnne0d 12259	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (!‘𝑘) ≠ 0)
377	376	adantr 482	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) ∧ 𝑥 ∈ ℝ+) → (!‘𝑘) ≠ 0)
378	367, 371, 372, 375, 376, 377	rlimdiv 15589	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))) ⇝𝑟 (0 / (!‘𝑘)))
379	373, 376	div0d 11986	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (0 / (!‘𝑘)) = 0)
380	378, 379	breqtrd 5174	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑘 ∈ (0...𝑁)) → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))) ⇝𝑟 0)
381	364, 365, 366, 380	fsumrlim 15754	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))) ⇝𝑟 Σ𝑘 ∈ (0...𝑁)0)
382		fzfi 13934	. . . . . . . . . . . 12 ⊢ (0...𝑁) ∈ Fin
383	382	olci 865	. . . . . . . . . . 11 ⊢ ((0...𝑁) ⊆ (ℤ≥‘0) ∨ (0...𝑁) ∈ Fin)
384		sumz 15665	. . . . . . . . . . 11 ⊢ (((0...𝑁) ⊆ (ℤ≥‘0) ∨ (0...𝑁) ∈ Fin) → Σ𝑘 ∈ (0...𝑁)0 = 0)
385	383, 384	ax-mp 5	. . . . . . . . . 10 ⊢ Σ𝑘 ∈ (0...𝑁)0 = 0
386	381, 385	breqtrdi 5189	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘))) ⇝𝑟 0)
387	17, 360, 363, 386	rlimmul 15587	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))) ⇝𝑟 ((!‘𝑁) · 0))
388	34	mul01d 11410	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ0 → ((!‘𝑁) · 0) = 0)
389	387, 388	breqtrd 5174	. . . . . . 7 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)((((log‘𝑥)↑𝑘) / 𝑥) / (!‘𝑘)))) ⇝𝑟 0)
390	356, 389	eqbrtrd 5170	. . . . . 6 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥)) ⇝𝑟 0)
391	56, 341, 54, 390	rlimsub 15586	. . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑁) / 𝑥) − (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥))) ⇝𝑟 (0 − 0))
392		0m0e0 12329	. . . . 5 ⊢ (0 − 0) = 0
393	391, 392	breqtrdi 5189	. . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑁) / 𝑥) − (((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))) / 𝑥))) ⇝𝑟 0)
394	339, 393	eqbrtrd 5170	. . 3 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) ⇝𝑟 0)
395	30, 32, 336, 394	rlimadd 15584	. 2 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥))) ⇝𝑟 ((!‘𝑁) + 0))
396		divsubdir 11905	. . . . . 6 ⊢ ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) ∈ ℂ ∧ (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) ∈ ℂ ∧ (𝑥 ∈ ℂ ∧ 𝑥 ≠ 0)) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) − ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)))
397	58, 63, 66, 396	syl3anc 1372	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) = ((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) − ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)))
398	397	oveq1d 7421	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) = (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) − ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)))
399	10, 2	rerpdivcld 13044	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) ∈ ℝ)
400	399	recnd 11239	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) ∈ ℂ)
401	32	recnd 11239	. . . . 5 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥) ∈ ℂ)
402	400, 401	npcand 11572	. . . 4 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥) − ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) = (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥))
403	398, 402	eqtrd 2773	. . 3 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑥 ∈ ℝ+) → (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥)) = (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥))
404	403	mpteq2dva 5248	. 2 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (((Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) − (((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘))))) / 𝑥) + ((((log‘𝑥)↑𝑁) − ((!‘𝑁) · Σ𝑘 ∈ (0...𝑁)(((log‘𝑥)↑𝑘) / (!‘𝑘)))) / 𝑥))) = (𝑥 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥)))
405	34	addridd 11411	. 2 ⊢ (𝑁 ∈ ℕ0 → ((!‘𝑁) + 0) = (!‘𝑁))
406	395, 404, 405	3brtr3d 5179	1 ⊢ (𝑁 ∈ ℕ0 → (𝑥 ∈ ℝ+ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))((log‘(𝑥 / 𝑛))↑𝑁) / 𝑥)) ⇝𝑟 (!‘𝑁))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 397   ∨ wo 846   ∧ w3a 1088   = wceq 1542   ∈ wcel 2107   ≠ wne 2941  Vcvv 3475  ⦋csb 3893   ∖ cdif 3945   ⊆ wss 3948  {csn 4628  {cpr 4630   class class class wbr 5148   ↦ cmpt 5231  ‘cfv 6541  (class class class)co 7406  Fincfn 8936  ℂcc 11105  ℝcr 11106  0cc0 11107  1c1 11108   + caddc 11110   · cmul 11112  +∞cpnf 11242   ≤ cle 11246   − cmin 11441   / cdiv 11868  ℕcn 12209  ℕ₀cn0 12469  ℤcz 12555  ℤ_≥cuz 12819  ℝ⁺crp 12971  (,)cioo 13321  ...cfz 13481  ⌊cfl 13752  ↑cexp 14024  !cfa 14230  abscabs 15178   ⇝_𝑟 crli 15426  Σcsu 15629   D cdv 25372  logclog 26055  ↑_𝑐ccxp 26056

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2704  ax-rep 5285  ax-sep 5299  ax-nul 5306  ax-pow 5363  ax-pr 5427  ax-un 7722  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  ax-addf 11186  ax-mulf 11187

This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-nf 1787  df-sb 2069  df-mo 2535  df-eu 2564  df-clab 2711  df-cleq 2725  df-clel 2811  df-nfc 2886  df-ne 2942  df-nel 3048  df-ral 3063  df-rex 3072  df-rmo 3377  df-reu 3378  df-rab 3434  df-v 3477  df-sbc 3778  df-csb 3894  df-dif 3951  df-un 3953  df-in 3955  df-ss 3965  df-pss 3967  df-nul 4323  df-if 4529  df-pw 4604  df-sn 4629  df-pr 4631  df-tp 4633  df-op 4635  df-uni 4909  df-int 4951  df-iun 4999  df-iin 5000  df-br 5149  df-opab 5211  df-mpt 5232  df-tr 5266  df-id 5574  df-eprel 5580  df-po 5588  df-so 5589  df-fr 5631  df-se 5632  df-we 5633  df-xp 5682  df-rel 5683  df-cnv 5684  df-co 5685  df-dm 5686  df-rn 5687  df-res 5688  df-ima 5689  df-pred 6298  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6493  df-fun 6543  df-fn 6544  df-f 6545  df-f1 6546  df-fo 6547  df-f1o 6548  df-fv 6549  df-isom 6550  df-riota 7362  df-ov 7409  df-oprab 7410  df-mpo 7411  df-of 7667  df-om 7853  df-1st 7972  df-2nd 7973  df-supp 8144  df-frecs 8263  df-wrecs 8294  df-recs 8368  df-rdg 8407  df-1o 8463  df-2o 8464  df-er 8700  df-map 8819  df-pm 8820  df-ixp 8889  df-en 8937  df-dom 8938  df-sdom 8939  df-fin 8940  df-fsupp 9359  df-fi 9403  df-sup 9434  df-inf 9435  df-oi 9502  df-card 9931  df-pnf 11247  df-mnf 11248  df-xr 11249  df-ltxr 11250  df-le 11251  df-sub 11443  df-neg 11444  df-div 11869  df-nn 12210  df-2 12272  df-3 12273  df-4 12274  df-5 12275  df-6 12276  df-7 12277  df-8 12278  df-9 12279  df-n0 12470  df-z 12556  df-dec 12675  df-uz 12820  df-q 12930  df-rp 12972  df-xneg 13089  df-xadd 13090  df-xmul 13091  df-ioo 13325  df-ioc 13326  df-ico 13327  df-icc 13328  df-fz 13482  df-fzo 13625  df-fl 13754  df-mod 13832  df-seq 13964  df-exp 14025  df-fac 14231  df-bc 14260  df-hash 14288  df-shft 15011  df-cj 15043  df-re 15044  df-im 15045  df-sqrt 15179  df-abs 15180  df-limsup 15412  df-clim 15429  df-rlim 15430  df-sum 15630  df-ef 16008  df-e 16009  df-sin 16010  df-cos 16011  df-pi 16013  df-struct 17077  df-sets 17094  df-slot 17112  df-ndx 17124  df-base 17142  df-ress 17171  df-plusg 17207  df-mulr 17208  df-starv 17209  df-sca 17210  df-vsca 17211  df-ip 17212  df-tset 17213  df-ple 17214  df-ds 17216  df-unif 17217  df-hom 17218  df-cco 17219  df-rest 17365  df-topn 17366  df-0g 17384  df-gsum 17385  df-topgen 17386  df-pt 17387  df-prds 17390  df-xrs 17445  df-qtop 17450  df-imas 17451  df-xps 17453  df-mre 17527  df-mrc 17528  df-acs 17530  df-mgm 18558  df-sgrp 18607  df-mnd 18623  df-submnd 18669  df-mulg 18946  df-cntz 19176  df-cmn 19645  df-psmet 20929  df-xmet 20930  df-met 20931  df-bl 20932  df-mopn 20933  df-fbas 20934  df-fg 20935  df-cnfld 20938  df-top 22388  df-topon 22405  df-topsp 22427  df-bases 22441  df-cld 22515  df-ntr 22516  df-cls 22517  df-nei 22594  df-lp 22632  df-perf 22633  df-cn 22723  df-cnp 22724  df-haus 22811  df-cmp 22883  df-tx 23058  df-hmeo 23251  df-fil 23342  df-fm 23434  df-flim 23435  df-flf 23436  df-xms 23818  df-ms 23819  df-tms 23820  df-cncf 24386  df-limc 25375  df-dv 25376  df-log 26057  df-cxp 26058

This theorem is referenced by:  logfacrlim2  26719  selberglem2  27039