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Theorem iprodgam 34712

Description: An infinite product version of Euler's gamma function. (Contributed by Scott Fenton, 12-Feb-2018.)

**Hypothesis**
Ref	Expression
iprodgam.1	⊢ (𝜑 → 𝐴 ∈ (ℂ ∖ (ℤ ∖ ℕ)))

**Assertion**
Ref	Expression
iprodgam	⊢ (𝜑 → (Γ‘𝐴) = (∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))) / 𝐴))

Distinct variable groups: 𝐴,𝑘 𝜑,𝑘

Proof of Theorem iprodgam Dummy variables 𝑗 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		iprodgam.1	. . 3 ⊢ (𝜑 → 𝐴 ∈ (ℂ ∖ (ℤ ∖ ℕ)))
2		eflgam 26549	. . 3 ⊢ (𝐴 ∈ (ℂ ∖ (ℤ ∖ ℕ)) → (exp‘(log Γ‘𝐴)) = (Γ‘𝐴))
3	1, 2	syl 17	. 2 ⊢ (𝜑 → (exp‘(log Γ‘𝐴)) = (Γ‘𝐴))
4		oveq1 7416	. . . . . . . . 9 ⊢ (𝑧 = 𝐴 → (𝑧 · (log‘((𝑘 + 1) / 𝑘))) = (𝐴 · (log‘((𝑘 + 1) / 𝑘))))
5		oveq1 7416	. . . . . . . . . 10 ⊢ (𝑧 = 𝐴 → (𝑧 / 𝑘) = (𝐴 / 𝑘))
6	5	fvoveq1d 7431	. . . . . . . . 9 ⊢ (𝑧 = 𝐴 → (log‘((𝑧 / 𝑘) + 1)) = (log‘((𝐴 / 𝑘) + 1)))
7	4, 6	oveq12d 7427	. . . . . . . 8 ⊢ (𝑧 = 𝐴 → ((𝑧 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝑧 / 𝑘) + 1))) = ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))))
8	7	sumeq2sdv 15650	. . . . . . 7 ⊢ (𝑧 = 𝐴 → Σ𝑘 ∈ ℕ ((𝑧 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝑧 / 𝑘) + 1))) = Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))))
9		fveq2 6892	. . . . . . 7 ⊢ (𝑧 = 𝐴 → (log‘𝑧) = (log‘𝐴))
10	8, 9	oveq12d 7427	. . . . . 6 ⊢ (𝑧 = 𝐴 → (Σ𝑘 ∈ ℕ ((𝑧 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝑧 / 𝑘) + 1))) − (log‘𝑧)) = (Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴)))
11		df-lgam 26523	. . . . . 6 ⊢ log Γ = (𝑧 ∈ (ℂ ∖ (ℤ ∖ ℕ)) ↦ (Σ𝑘 ∈ ℕ ((𝑧 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝑧 / 𝑘) + 1))) − (log‘𝑧)))
12		ovex 7442	. . . . . 6 ⊢ (Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴)) ∈ V
13	10, 11, 12	fvmpt 6999	. . . . 5 ⊢ (𝐴 ∈ (ℂ ∖ (ℤ ∖ ℕ)) → (log Γ‘𝐴) = (Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴)))
14	1, 13	syl 17	. . . 4 ⊢ (𝜑 → (log Γ‘𝐴) = (Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴)))
15	14	fveq2d 6896	. . 3 ⊢ (𝜑 → (exp‘(log Γ‘𝐴)) = (exp‘(Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴))))
16		nnuz 12865	. . . . . 6 ⊢ ℕ = (ℤ_≥‘1)
17		1zzd 12593	. . . . . 6 ⊢ (𝜑 → 1 ∈ ℤ)
18		oveq1 7416	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑘 → (𝑗 + 1) = (𝑘 + 1))
19		id 22	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑘 → 𝑗 = 𝑘)
20	18, 19	oveq12d 7427	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑘 → ((𝑗 + 1) / 𝑗) = ((𝑘 + 1) / 𝑘))
21	20	fveq2d 6896	. . . . . . . . . 10 ⊢ (𝑗 = 𝑘 → (log‘((𝑗 + 1) / 𝑗)) = (log‘((𝑘 + 1) / 𝑘)))
22	21	oveq2d 7425	. . . . . . . . 9 ⊢ (𝑗 = 𝑘 → (𝐴 · (log‘((𝑗 + 1) / 𝑗))) = (𝐴 · (log‘((𝑘 + 1) / 𝑘))))
23		oveq2 7417	. . . . . . . . . 10 ⊢ (𝑗 = 𝑘 → (𝐴 / 𝑗) = (𝐴 / 𝑘))
24	23	fvoveq1d 7431	. . . . . . . . 9 ⊢ (𝑗 = 𝑘 → (log‘((𝐴 / 𝑗) + 1)) = (log‘((𝐴 / 𝑘) + 1)))
25	22, 24	oveq12d 7427	. . . . . . . 8 ⊢ (𝑗 = 𝑘 → ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))) = ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))))
26		eqid 2733	. . . . . . . 8 ⊢ (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1)))) = (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))
27		ovex 7442	. . . . . . . 8 ⊢ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) ∈ V
28	25, 26, 27	fvmpt 6999	. . . . . . 7 ⊢ (𝑘 ∈ ℕ → ((𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))‘𝑘) = ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))))
29	28	adantl 483	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))‘𝑘) = ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))))
30	1	eldifad 3961	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ ℂ)
31	30	adantr 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ ℂ)
32		peano2nn 12224	. . . . . . . . . . . 12 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
33	32	adantl 483	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 + 1) ∈ ℕ)
34	33	nncnd 12228	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 + 1) ∈ ℂ)
35		nncn 12220	. . . . . . . . . . 11 ⊢ (𝑘 ∈ ℕ → 𝑘 ∈ ℂ)
36	35	adantl 483	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℂ)
37		nnne0 12246	. . . . . . . . . . 11 ⊢ (𝑘 ∈ ℕ → 𝑘 ≠ 0)
38	37	adantl 483	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ≠ 0)
39	34, 36, 38	divcld 11990	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) / 𝑘) ∈ ℂ)
40	33	nnne0d 12262	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 + 1) ≠ 0)
41	34, 36, 40, 38	divne0d 12006	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) / 𝑘) ≠ 0)
42	39, 41	logcld 26079	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (log‘((𝑘 + 1) / 𝑘)) ∈ ℂ)
43	31, 42	mulcld 11234	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · (log‘((𝑘 + 1) / 𝑘))) ∈ ℂ)
44	31, 36, 38	divcld 11990	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 / 𝑘) ∈ ℂ)
45		1cnd 11209	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 1 ∈ ℂ)
46	44, 45	addcld 11233	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 / 𝑘) + 1) ∈ ℂ)
47	1	adantr 482	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝐴 ∈ (ℂ ∖ (ℤ ∖ ℕ)))
48		simpr 486	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℕ)
49	47, 48	dmgmdivn0 26532	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 / 𝑘) + 1) ≠ 0)
50	46, 49	logcld 26079	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (log‘((𝐴 / 𝑘) + 1)) ∈ ℂ)
51	43, 50	subcld 11571	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) ∈ ℂ)
52	26, 1	lgamcvg 26558	. . . . . . 7 ⊢ (𝜑 → seq1( + , (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))) ⇝ ((log Γ‘𝐴) + (log‘𝐴)))
53		seqex 13968	. . . . . . . 8 ⊢ seq1( + , (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))) ∈ V
54		ovex 7442	. . . . . . . 8 ⊢ ((log Γ‘𝐴) + (log‘𝐴)) ∈ V
55	53, 54	breldm 5909	. . . . . . 7 ⊢ (seq1( + , (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))) ⇝ ((log Γ‘𝐴) + (log‘𝐴)) → seq1( + , (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))) ∈ dom ⇝ )
56	52, 55	syl 17	. . . . . 6 ⊢ (𝜑 → seq1( + , (𝑗 ∈ ℕ ↦ ((𝐴 · (log‘((𝑗 + 1) / 𝑗))) − (log‘((𝐴 / 𝑗) + 1))))) ∈ dom ⇝ )
57	16, 17, 29, 51, 56	isumcl 15707	. . . . 5 ⊢ (𝜑 → Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) ∈ ℂ)
58	1	dmgmn0 26530	. . . . . 6 ⊢ (𝜑 → 𝐴 ≠ 0)
59	30, 58	logcld 26079	. . . . 5 ⊢ (𝜑 → (log‘𝐴) ∈ ℂ)
60		efsub 16043	. . . . 5 ⊢ ((Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) ∈ ℂ ∧ (log‘𝐴) ∈ ℂ) → (exp‘(Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴))) = ((exp‘Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) / (exp‘(log‘𝐴))))
61	57, 59, 60	syl2anc 585	. . . 4 ⊢ (𝜑 → (exp‘(Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴))) = ((exp‘Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) / (exp‘(log‘𝐴))))
62	16, 17, 29, 51, 56	iprodefisum 34711	. . . . . 6 ⊢ (𝜑 → ∏𝑘 ∈ ℕ (exp‘((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = (exp‘Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))))
63		efsub 16043	. . . . . . . . 9 ⊢ (((𝐴 · (log‘((𝑘 + 1) / 𝑘))) ∈ ℂ ∧ (log‘((𝐴 / 𝑘) + 1)) ∈ ℂ) → (exp‘((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = ((exp‘(𝐴 · (log‘((𝑘 + 1) / 𝑘)))) / (exp‘(log‘((𝐴 / 𝑘) + 1)))))
64	43, 50, 63	syl2anc 585	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = ((exp‘(𝐴 · (log‘((𝑘 + 1) / 𝑘)))) / (exp‘(log‘((𝐴 / 𝑘) + 1)))))
65	36, 45, 36, 38	divdird 12028	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) / 𝑘) = ((𝑘 / 𝑘) + (1 / 𝑘)))
66	36, 38	dividd 11988	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑘 / 𝑘) = 1)
67	66	oveq1d 7424	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 / 𝑘) + (1 / 𝑘)) = (1 + (1 / 𝑘)))
68	65, 67	eqtrd 2773	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑘 + 1) / 𝑘) = (1 + (1 / 𝑘)))
69	68	fveq2d 6896	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (log‘((𝑘 + 1) / 𝑘)) = (log‘(1 + (1 / 𝑘))))
70	69	oveq2d 7425	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝐴 · (log‘((𝑘 + 1) / 𝑘))) = (𝐴 · (log‘(1 + (1 / 𝑘)))))
71	70	fveq2d 6896	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘(𝐴 · (log‘((𝑘 + 1) / 𝑘)))) = (exp‘(𝐴 · (log‘(1 + (1 / 𝑘))))))
72		1rp 12978	. . . . . . . . . . . . . 14 ⊢ 1 ∈ ℝ⁺
73	72	a1i 11	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 1 ∈ ℝ⁺)
74	48	nnrpd 13014	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → 𝑘 ∈ ℝ⁺)
75	74	rpreccld 13026	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 / 𝑘) ∈ ℝ⁺)
76	73, 75	rpaddcld 13031	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 + (1 / 𝑘)) ∈ ℝ⁺)
77	76	rpcnd 13018	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 + (1 / 𝑘)) ∈ ℂ)
78	76	rpne0d 13021	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (1 + (1 / 𝑘)) ≠ 0)
79	77, 78, 31	cxpefd 26220	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((1 + (1 / 𝑘))↑_𝑐𝐴) = (exp‘(𝐴 · (log‘(1 + (1 / 𝑘))))))
80	71, 79	eqtr4d 2776	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘(𝐴 · (log‘((𝑘 + 1) / 𝑘)))) = ((1 + (1 / 𝑘))↑_𝑐𝐴))
81		eflog 26085	. . . . . . . . . . 11 ⊢ ((((𝐴 / 𝑘) + 1) ∈ ℂ ∧ ((𝐴 / 𝑘) + 1) ≠ 0) → (exp‘(log‘((𝐴 / 𝑘) + 1))) = ((𝐴 / 𝑘) + 1))
82	46, 49, 81	syl2anc 585	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘(log‘((𝐴 / 𝑘) + 1))) = ((𝐴 / 𝑘) + 1))
83	44, 45	addcomd 11416	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝐴 / 𝑘) + 1) = (1 + (𝐴 / 𝑘)))
84	82, 83	eqtrd 2773	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘(log‘((𝐴 / 𝑘) + 1))) = (1 + (𝐴 / 𝑘)))
85	80, 84	oveq12d 7427	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((exp‘(𝐴 · (log‘((𝑘 + 1) / 𝑘)))) / (exp‘(log‘((𝐴 / 𝑘) + 1)))) = (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))))
86	64, 85	eqtrd 2773	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (exp‘((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))))
87	86	prodeq2dv 15867	. . . . . 6 ⊢ (𝜑 → ∏𝑘 ∈ ℕ (exp‘((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = ∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))))
88	62, 87	eqtr3d 2775	. . . . 5 ⊢ (𝜑 → (exp‘Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) = ∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))))
89		eflog 26085	. . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) → (exp‘(log‘𝐴)) = 𝐴)
90	30, 58, 89	syl2anc 585	. . . . 5 ⊢ (𝜑 → (exp‘(log‘𝐴)) = 𝐴)
91	88, 90	oveq12d 7427	. . . 4 ⊢ (𝜑 → ((exp‘Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1)))) / (exp‘(log‘𝐴))) = (∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))) / 𝐴))
92	61, 91	eqtrd 2773	. . 3 ⊢ (𝜑 → (exp‘(Σ𝑘 ∈ ℕ ((𝐴 · (log‘((𝑘 + 1) / 𝑘))) − (log‘((𝐴 / 𝑘) + 1))) − (log‘𝐴))) = (∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))) / 𝐴))
93	15, 92	eqtrd 2773	. 2 ⊢ (𝜑 → (exp‘(log Γ‘𝐴)) = (∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))) / 𝐴))
94	3, 93	eqtr3d 2775	1 ⊢ (𝜑 → (Γ‘𝐴) = (∏𝑘 ∈ ℕ (((1 + (1 / 𝑘))↑_𝑐𝐴) / (1 + (𝐴 / 𝑘))) / 𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 ∖ cdif 3946 class class class wbr 5149 ↦ cmpt 5232 dom cdm 5677 ‘cfv 6544 (class class class)co 7409 ℂcc 11108 0cc0 11110 1c1 11111 + caddc 11113 · cmul 11115 − cmin 11444 / cdiv 11871 ℕcn 12212 ℤcz 12558 ℝ⁺crp 12974 seqcseq 13966 ⇝ cli 15428 Σcsu 15632 ∏cprod 15849 expce 16005 logclog 26063 ↑_𝑐ccxp 26064 log Γclgam 26520 Γcgam 26521

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 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-inf2 9636 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188 ax-addf 11189 ax-mulf 11190

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 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-iin 5001 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-se 5633 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-isom 6553 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-of 7670 df-om 7856 df-1st 7975 df-2nd 7976 df-supp 8147 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-2o 8467 df-oadd 8470 df-er 8703 df-map 8822 df-pm 8823 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-fsupp 9362 df-fi 9406 df-sup 9437 df-inf 9438 df-oi 9505 df-dju 9896 df-card 9934 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-z 12559 df-dec 12678 df-uz 12823 df-q 12933 df-rp 12975 df-xneg 13092 df-xadd 13093 df-xmul 13094 df-ioo 13328 df-ioc 13329 df-ico 13330 df-icc 13331 df-fz 13485 df-fzo 13628 df-fl 13757 df-mod 13835 df-seq 13967 df-exp 14028 df-fac 14234 df-bc 14263 df-hash 14291 df-shft 15014 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-limsup 15415 df-clim 15432 df-rlim 15433 df-sum 15633 df-prod 15850 df-ef 16011 df-sin 16013 df-cos 16014 df-tan 16015 df-pi 16016 df-struct 17080 df-sets 17097 df-slot 17115 df-ndx 17127 df-base 17145 df-ress 17174 df-plusg 17210 df-mulr 17211 df-starv 17212 df-sca 17213 df-vsca 17214 df-ip 17215 df-tset 17216 df-ple 17217 df-ds 17219 df-unif 17220 df-hom 17221 df-cco 17222 df-rest 17368 df-topn 17369 df-0g 17387 df-gsum 17388 df-topgen 17389 df-pt 17390 df-prds 17393 df-xrs 17448 df-qtop 17453 df-imas 17454 df-xps 17456 df-mre 17530 df-mrc 17531 df-acs 17533 df-mgm 18561 df-sgrp 18610 df-mnd 18626 df-submnd 18672 df-mulg 18951 df-cntz 19181 df-cmn 19650 df-psmet 20936 df-xmet 20937 df-met 20938 df-bl 20939 df-mopn 20940 df-fbas 20941 df-fg 20942 df-cnfld 20945 df-top 22396 df-topon 22413 df-topsp 22435 df-bases 22449 df-cld 22523 df-ntr 22524 df-cls 22525 df-nei 22602 df-lp 22640 df-perf 22641 df-cn 22731 df-cnp 22732 df-haus 22819 df-cmp 22891 df-tx 23066 df-hmeo 23259 df-fil 23350 df-fm 23442 df-flim 23443 df-flf 23444 df-xms 23826 df-ms 23827 df-tms 23828 df-cncf 24394 df-limc 25383 df-dv 25384 df-ulm 25889 df-log 26065 df-cxp 26066 df-lgam 26523 df-gam 26524

This theorem is referenced by: (None)

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