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Theorem logfacbnd3 27202

Description: Show the stronger statement log(𝑥!) = 𝑥log𝑥 − 𝑥 + 𝑂(log𝑥) alluded to in logfacrlim 27203. (Contributed by Mario Carneiro, 20-May-2016.)

**Assertion**
Ref	Expression
logfacbnd3	⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) ≤ ((log‘𝐴) + 1))

Proof of Theorem logfacbnd3 Dummy variables 𝑥 𝑛 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl 482	. . . . . . . . . . . 12 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 𝐴 ∈ ℝ⁺)
2	1	rprege0d 12968	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (𝐴 ∈ ℝ ∧ 0 ≤ 𝐴))
3		flge0nn0 13752	. . . . . . . . . . 11 ⊢ ((𝐴 ∈ ℝ ∧ 0 ≤ 𝐴) → (⌊‘𝐴) ∈ ℕ₀)
4	2, 3	syl 17	. . . . . . . . . 10 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (⌊‘𝐴) ∈ ℕ₀)
5	4	faccld 14219	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (!‘(⌊‘𝐴)) ∈ ℕ)
6	5	nnrpd 12959	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (!‘(⌊‘𝐴)) ∈ ℝ⁺)
7		relogcl 26552	. . . . . . . 8 ⊢ ((!‘(⌊‘𝐴)) ∈ ℝ⁺ → (log‘(!‘(⌊‘𝐴))) ∈ ℝ)
8	6, 7	syl 17	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (log‘(!‘(⌊‘𝐴))) ∈ ℝ)
9		rpre 12926	. . . . . . . . 9 ⊢ (𝐴 ∈ ℝ⁺ → 𝐴 ∈ ℝ)
10	9	adantr 480	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 𝐴 ∈ ℝ)
11		relogcl 26552	. . . . . . . . . 10 ⊢ (𝐴 ∈ ℝ⁺ → (log‘𝐴) ∈ ℝ)
12	11	adantr 480	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (log‘𝐴) ∈ ℝ)
13		peano2rem 11460	. . . . . . . . 9 ⊢ ((log‘𝐴) ∈ ℝ → ((log‘𝐴) − 1) ∈ ℝ)
14	12, 13	syl 17	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((log‘𝐴) − 1) ∈ ℝ)
15	10, 14	remulcld 11174	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (𝐴 · ((log‘𝐴) − 1)) ∈ ℝ)
16	8, 15	resubcld 11577	. . . . . 6 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) ∈ ℝ)
17	16	recnd 11172	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) ∈ ℂ)
18	17	abscld 15374	. . . 4 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) ∈ ℝ)
19		peano2rem 11460	. . . 4 ⊢ ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) ∈ ℝ → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1) ∈ ℝ)
20	18, 19	syl 17	. . 3 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1) ∈ ℝ)
21		ax-1cn 11096	. . . . 5 ⊢ 1 ∈ ℂ
22		subcl 11391	. . . . 5 ⊢ ((((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) ∈ ℂ ∧ 1 ∈ ℂ) → (((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1) ∈ ℂ)
23	17, 21, 22	sylancl 587	. . . 4 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1) ∈ ℂ)
24	23	abscld 15374	. . 3 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)) ∈ ℝ)
25		abs1 15232	. . . . 5 ⊢ (abs‘1) = 1
26	25	oveq2i 7379	. . . 4 ⊢ ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − (abs‘1)) = ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1)
27		abs2dif 15268	. . . . 5 ⊢ ((((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) ∈ ℂ ∧ 1 ∈ ℂ) → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − (abs‘1)) ≤ (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)))
28	17, 21, 27	sylancl 587	. . . 4 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − (abs‘1)) ≤ (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)))
29	26, 28	eqbrtrrid 5136	. . 3 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1) ≤ (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)))
30		fveq2 6842	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝐴 → (⌊‘𝑥) = (⌊‘𝐴))
31	30	oveq2d 7384	. . . . . . . . . . 11 ⊢ (𝑥 = 𝐴 → (1...(⌊‘𝑥)) = (1...(⌊‘𝐴)))
32	31	sumeq1d 15635	. . . . . . . . . 10 ⊢ (𝑥 = 𝐴 → Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
33		id 22	. . . . . . . . . . 11 ⊢ (𝑥 = 𝐴 → 𝑥 = 𝐴)
34		fveq2 6842	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝐴 → (log‘𝑥) = (log‘𝐴))
35	34	oveq1d 7383	. . . . . . . . . . 11 ⊢ (𝑥 = 𝐴 → ((log‘𝑥) − 1) = ((log‘𝐴) − 1))
36	33, 35	oveq12d 7386	. . . . . . . . . 10 ⊢ (𝑥 = 𝐴 → (𝑥 · ((log‘𝑥) − 1)) = (𝐴 · ((log‘𝐴) − 1)))
37	32, 36	oveq12d 7386	. . . . . . . . 9 ⊢ (𝑥 = 𝐴 → (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))) = (Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛) − (𝐴 · ((log‘𝐴) − 1))))
38		eqid 2737	. . . . . . . . 9 ⊢ (𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1)))) = (𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))
39		ovex 7401	. . . . . . . . 9 ⊢ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))) ∈ V
40	37, 38, 39	fvmpt3i 6955	. . . . . . . 8 ⊢ (𝐴 ∈ ℝ⁺ → ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) = (Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛) − (𝐴 · ((log‘𝐴) − 1))))
41	40	adantr 480	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) = (Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛) − (𝐴 · ((log‘𝐴) − 1))))
42		logfac 26578	. . . . . . . . 9 ⊢ ((⌊‘𝐴) ∈ ℕ₀ → (log‘(!‘(⌊‘𝐴))) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
43	4, 42	syl 17	. . . . . . . 8 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (log‘(!‘(⌊‘𝐴))) = Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛))
44	43	oveq1d 7383	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) = (Σ𝑛 ∈ (1...(⌊‘𝐴))(log‘𝑛) − (𝐴 · ((log‘𝐴) − 1))))
45	41, 44	eqtr4d 2775	. . . . . 6 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) = ((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))))
46		1rp 12921	. . . . . . 7 ⊢ 1 ∈ ℝ⁺
47		fveq2 6842	. . . . . . . . . . . . . 14 ⊢ (𝑥 = 1 → (⌊‘𝑥) = (⌊‘1))
48		1z 12533	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ ℤ
49		flid 13740	. . . . . . . . . . . . . . 15 ⊢ (1 ∈ ℤ → (⌊‘1) = 1)
50	48, 49	ax-mp 5	. . . . . . . . . . . . . 14 ⊢ (⌊‘1) = 1
51	47, 50	eqtrdi 2788	. . . . . . . . . . . . 13 ⊢ (𝑥 = 1 → (⌊‘𝑥) = 1)
52	51	oveq2d 7384	. . . . . . . . . . . 12 ⊢ (𝑥 = 1 → (1...(⌊‘𝑥)) = (1...1))
53	52	sumeq1d 15635	. . . . . . . . . . 11 ⊢ (𝑥 = 1 → Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) = Σ𝑛 ∈ (1...1)(log‘𝑛))
54		0cn 11136	. . . . . . . . . . . 12 ⊢ 0 ∈ ℂ
55		fveq2 6842	. . . . . . . . . . . . . 14 ⊢ (𝑛 = 1 → (log‘𝑛) = (log‘1))
56		log1 26562	. . . . . . . . . . . . . 14 ⊢ (log‘1) = 0
57	55, 56	eqtrdi 2788	. . . . . . . . . . . . 13 ⊢ (𝑛 = 1 → (log‘𝑛) = 0)
58	57	fsum1 15682	. . . . . . . . . . . 12 ⊢ ((1 ∈ ℤ ∧ 0 ∈ ℂ) → Σ𝑛 ∈ (1...1)(log‘𝑛) = 0)
59	48, 54, 58	mp2an 693	. . . . . . . . . . 11 ⊢ Σ𝑛 ∈ (1...1)(log‘𝑛) = 0
60	53, 59	eqtrdi 2788	. . . . . . . . . 10 ⊢ (𝑥 = 1 → Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) = 0)
61		id 22	. . . . . . . . . . . 12 ⊢ (𝑥 = 1 → 𝑥 = 1)
62		fveq2 6842	. . . . . . . . . . . . . 14 ⊢ (𝑥 = 1 → (log‘𝑥) = (log‘1))
63	62, 56	eqtrdi 2788	. . . . . . . . . . . . 13 ⊢ (𝑥 = 1 → (log‘𝑥) = 0)
64	63	oveq1d 7383	. . . . . . . . . . . 12 ⊢ (𝑥 = 1 → ((log‘𝑥) − 1) = (0 − 1))
65	61, 64	oveq12d 7386	. . . . . . . . . . 11 ⊢ (𝑥 = 1 → (𝑥 · ((log‘𝑥) − 1)) = (1 · (0 − 1)))
66	54, 21	subcli 11469	. . . . . . . . . . . 12 ⊢ (0 − 1) ∈ ℂ
67	66	mullidi 11149	. . . . . . . . . . 11 ⊢ (1 · (0 − 1)) = (0 − 1)
68	65, 67	eqtrdi 2788	. . . . . . . . . 10 ⊢ (𝑥 = 1 → (𝑥 · ((log‘𝑥) − 1)) = (0 − 1))
69	60, 68	oveq12d 7386	. . . . . . . . 9 ⊢ (𝑥 = 1 → (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))) = (0 − (0 − 1)))
70		nncan 11422	. . . . . . . . . 10 ⊢ ((0 ∈ ℂ ∧ 1 ∈ ℂ) → (0 − (0 − 1)) = 1)
71	54, 21, 70	mp2an 693	. . . . . . . . 9 ⊢ (0 − (0 − 1)) = 1
72	69, 71	eqtrdi 2788	. . . . . . . 8 ⊢ (𝑥 = 1 → (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))) = 1)
73	72, 38, 39	fvmpt3i 6955	. . . . . . 7 ⊢ (1 ∈ ℝ⁺ → ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘1) = 1)
74	46, 73	mp1i 13	. . . . . 6 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘1) = 1)
75	45, 74	oveq12d 7386	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) − ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘1)) = (((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1))
76	75	fveq2d 6846	. . . 4 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘(((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) − ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘1))) = (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)))
77		ioorp 13353	. . . . . 6 ⊢ (0(,)+∞) = ℝ⁺
78	77	eqcomi 2746	. . . . 5 ⊢ ℝ⁺ = (0(,)+∞)
79		nnuz 12802	. . . . 5 ⊢ ℕ = (ℤ_≥‘1)
80	48	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ∈ ℤ)
81		1re 11144	. . . . . 6 ⊢ 1 ∈ ℝ
82	81	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ∈ ℝ)
83		pnfxr 11198	. . . . . 6 ⊢ +∞ ∈ ℝ^*
84	83	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → +∞ ∈ ℝ^*)
85		1nn0 12429	. . . . . . 7 ⊢ 1 ∈ ℕ₀
86	81, 85	nn0addge1i 12461	. . . . . 6 ⊢ 1 ≤ (1 + 1)
87	86	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ≤ (1 + 1))
88		0red 11147	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 0 ∈ ℝ)
89		rpre 12926	. . . . . . 7 ⊢ (𝑥 ∈ ℝ⁺ → 𝑥 ∈ ℝ)
90	89	adantl 481	. . . . . 6 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ 𝑥 ∈ ℝ⁺) → 𝑥 ∈ ℝ)
91		relogcl 26552	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ⁺ → (log‘𝑥) ∈ ℝ)
92	91	adantl 481	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ 𝑥 ∈ ℝ⁺) → (log‘𝑥) ∈ ℝ)
93		peano2rem 11460	. . . . . . 7 ⊢ ((log‘𝑥) ∈ ℝ → ((log‘𝑥) − 1) ∈ ℝ)
94	92, 93	syl 17	. . . . . 6 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ 𝑥 ∈ ℝ⁺) → ((log‘𝑥) − 1) ∈ ℝ)
95	90, 94	remulcld 11174	. . . . 5 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ 𝑥 ∈ ℝ⁺) → (𝑥 · ((log‘𝑥) − 1)) ∈ ℝ)
96		nnrp 12929	. . . . . 6 ⊢ (𝑥 ∈ ℕ → 𝑥 ∈ ℝ⁺)
97	96, 92	sylan2 594	. . . . 5 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ 𝑥 ∈ ℕ) → (log‘𝑥) ∈ ℝ)
98		advlog 26631	. . . . . 6 ⊢ (ℝ D (𝑥 ∈ ℝ⁺ ↦ (𝑥 · ((log‘𝑥) − 1)))) = (𝑥 ∈ ℝ⁺ ↦ (log‘𝑥))
99	98	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (ℝ D (𝑥 ∈ ℝ⁺ ↦ (𝑥 · ((log‘𝑥) − 1)))) = (𝑥 ∈ ℝ⁺ ↦ (log‘𝑥)))
100		fveq2 6842	. . . . 5 ⊢ (𝑥 = 𝑛 → (log‘𝑥) = (log‘𝑛))
101		simp32 1212	. . . . . 6 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 𝑛 ∈ ℝ⁺) ∧ (1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞)) → 𝑥 ≤ 𝑛)
102		logleb 26580	. . . . . . 7 ⊢ ((𝑥 ∈ ℝ⁺ ∧ 𝑛 ∈ ℝ⁺) → (𝑥 ≤ 𝑛 ↔ (log‘𝑥) ≤ (log‘𝑛)))
103	102	3ad2ant2 1135	. . . . . 6 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 𝑛 ∈ ℝ⁺) ∧ (1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞)) → (𝑥 ≤ 𝑛 ↔ (log‘𝑥) ≤ (log‘𝑛)))
104	101, 103	mpbid 232	. . . . 5 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 𝑛 ∈ ℝ⁺) ∧ (1 ≤ 𝑥 ∧ 𝑥 ≤ 𝑛 ∧ 𝑛 ≤ +∞)) → (log‘𝑥) ≤ (log‘𝑛))
105		simprr 773	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 1 ≤ 𝑥)) → 1 ≤ 𝑥)
106		simprl 771	. . . . . . . 8 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 1 ≤ 𝑥)) → 𝑥 ∈ ℝ⁺)
107		logleb 26580	. . . . . . . 8 ⊢ ((1 ∈ ℝ⁺ ∧ 𝑥 ∈ ℝ⁺) → (1 ≤ 𝑥 ↔ (log‘1) ≤ (log‘𝑥)))
108	46, 106, 107	sylancr 588	. . . . . . 7 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 1 ≤ 𝑥)) → (1 ≤ 𝑥 ↔ (log‘1) ≤ (log‘𝑥)))
109	105, 108	mpbid 232	. . . . . 6 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 1 ≤ 𝑥)) → (log‘1) ≤ (log‘𝑥))
110	56, 109	eqbrtrrid 5136	. . . . 5 ⊢ (((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) ∧ (𝑥 ∈ ℝ⁺ ∧ 1 ≤ 𝑥)) → 0 ≤ (log‘𝑥))
111	46	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ∈ ℝ⁺)
112		1le1 11777	. . . . . 6 ⊢ 1 ≤ 1
113	112	a1i 11	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ≤ 1)
114		simpr 484	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 1 ≤ 𝐴)
115	10	rexrd 11194	. . . . . 6 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 𝐴 ∈ ℝ^*)
116		pnfge 13056	. . . . . 6 ⊢ (𝐴 ∈ ℝ^* → 𝐴 ≤ +∞)
117	115, 116	syl 17	. . . . 5 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → 𝐴 ≤ +∞)
118	78, 79, 80, 82, 84, 87, 88, 95, 92, 97, 99, 100, 104, 38, 110, 111, 1, 113, 114, 117, 34	dvfsum2 26009	. . . 4 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘(((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘𝐴) − ((𝑥 ∈ ℝ⁺ ↦ (Σ𝑛 ∈ (1...(⌊‘𝑥))(log‘𝑛) − (𝑥 · ((log‘𝑥) − 1))))‘1))) ≤ (log‘𝐴))
119	76, 118	eqbrtrrd 5124	. . 3 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘(((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1))) − 1)) ≤ (log‘𝐴))
120	20, 24, 12, 29, 119	letrd 11302	. 2 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → ((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1) ≤ (log‘𝐴))
121	18, 82, 12	lesubaddd 11746	. 2 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (((abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) − 1) ≤ (log‘𝐴) ↔ (abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) ≤ ((log‘𝐴) + 1)))
122	120, 121	mpbid 232	1 ⊢ ((𝐴 ∈ ℝ⁺ ∧ 1 ≤ 𝐴) → (abs‘((log‘(!‘(⌊‘𝐴))) − (𝐴 · ((log‘𝐴) − 1)))) ≤ ((log‘𝐴) + 1))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 class class class wbr 5100 ↦ cmpt 5181 ‘cfv 6500 (class class class)co 7368 ℂcc 11036 ℝcr 11037 0cc0 11038 1c1 11039 + caddc 11041 · cmul 11043 +∞cpnf 11175 ℝ^*cxr 11177 ≤ cle 11179 − cmin 11376 ℕcn 12157 ℕ₀cn0 12413 ℤcz 12500 ℝ⁺crp 12917 (,)cioo 13273 ...cfz 13435 ⌊cfl 13722 !cfa 14208 abscabs 15169 Σcsu 15621 D cdv 25832 logclog 26531

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-inf2 9562 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116 ax-addf 11117

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4905 df-iun 4950 df-iin 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-se 5586 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-isom 6509 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-of 7632 df-om 7819 df-1st 7943 df-2nd 7944 df-supp 8113 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-1o 8407 df-2o 8408 df-er 8645 df-map 8777 df-pm 8778 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fsupp 9277 df-fi 9326 df-sup 9357 df-inf 9358 df-oi 9427 df-card 9863 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-div 11807 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-dec 12620 df-uz 12764 df-q 12874 df-rp 12918 df-xneg 13038 df-xadd 13039 df-xmul 13040 df-ioo 13277 df-ioc 13278 df-ico 13279 df-icc 13280 df-fz 13436 df-fzo 13583 df-fl 13724 df-mod 13802 df-seq 13937 df-exp 13997 df-fac 14209 df-bc 14238 df-hash 14266 df-shft 15002 df-cj 15034 df-re 15035 df-im 15036 df-sqrt 15170 df-abs 15171 df-limsup 15406 df-clim 15423 df-rlim 15424 df-sum 15622 df-ef 16002 df-sin 16004 df-cos 16005 df-pi 16007 df-struct 17086 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-ress 17170 df-plusg 17202 df-mulr 17203 df-starv 17204 df-sca 17205 df-vsca 17206 df-ip 17207 df-tset 17208 df-ple 17209 df-ds 17211 df-unif 17212 df-hom 17213 df-cco 17214 df-rest 17354 df-topn 17355 df-0g 17373 df-gsum 17374 df-topgen 17375 df-pt 17376 df-prds 17379 df-xrs 17435 df-qtop 17440 df-imas 17441 df-xps 17443 df-mre 17517 df-mrc 17518 df-acs 17520 df-mgm 18577 df-sgrp 18656 df-mnd 18672 df-submnd 18721 df-mulg 19010 df-cntz 19258 df-cmn 19723 df-psmet 21313 df-xmet 21314 df-met 21315 df-bl 21316 df-mopn 21317 df-fbas 21318 df-fg 21319 df-cnfld 21322 df-top 22850 df-topon 22867 df-topsp 22889 df-bases 22902 df-cld 22975 df-ntr 22976 df-cls 22977 df-nei 23054 df-lp 23092 df-perf 23093 df-cn 23183 df-cnp 23184 df-haus 23271 df-cmp 23343 df-tx 23518 df-hmeo 23711 df-fil 23802 df-fm 23894 df-flim 23895 df-flf 23896 df-xms 24276 df-ms 24277 df-tms 24278 df-cncf 24839 df-limc 25835 df-dv 25836 df-log 26533

This theorem is referenced by: logfacrlim 27203

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