Properties

Label 2-2e3-8.3-c2-0-0
Degree $2$
Conductor $8$
Sign $1$
Analytic cond. $0.217984$
Root an. cond. $0.466887$
Motivic weight $2$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  − 2·2-s − 2·3-s + 4·4-s + 4·6-s − 8·8-s − 5·9-s + 14·11-s − 8·12-s + 16·16-s + 2·17-s + 10·18-s − 34·19-s − 28·22-s + 16·24-s + 25·25-s + 28·27-s − 32·32-s − 28·33-s − 4·34-s − 20·36-s + 68·38-s − 46·41-s + 14·43-s + 56·44-s − 32·48-s + 49·49-s − 50·50-s + ⋯
L(s)  = 1  − 2-s − 2/3·3-s + 4-s + 2/3·6-s − 8-s − 5/9·9-s + 1.27·11-s − 2/3·12-s + 16-s + 2/17·17-s + 5/9·18-s − 1.78·19-s − 1.27·22-s + 2/3·24-s + 25-s + 1.03·27-s − 32-s − 0.848·33-s − 0.117·34-s − 5/9·36-s + 1.78·38-s − 1.12·41-s + 0.325·43-s + 1.27·44-s − 2/3·48-s + 49-s − 50-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(3-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s+1) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(8\)    =    \(2^{3}\)
Sign: $1$
Analytic conductor: \(0.217984\)
Root analytic conductor: \(0.466887\)
Motivic weight: \(2\)
Rational: yes
Arithmetic: yes
Character: $\chi_{8} (3, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 8,\ (\ :1),\ 1)\)

Particular Values

\(L(\frac{3}{2})\) \(\approx\) \(0.3886892575\)
\(L(\frac12)\) \(\approx\) \(0.3886892575\)
\(L(2)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 + p T \)
good3 \( 1 + 2 T + p^{2} T^{2} \)
5 \( ( 1 - p T )( 1 + p T ) \)
7 \( ( 1 - p T )( 1 + p T ) \)
11 \( 1 - 14 T + p^{2} T^{2} \)
13 \( ( 1 - p T )( 1 + p T ) \)
17 \( 1 - 2 T + p^{2} T^{2} \)
19 \( 1 + 34 T + p^{2} T^{2} \)
23 \( ( 1 - p T )( 1 + p T ) \)
29 \( ( 1 - p T )( 1 + p T ) \)
31 \( ( 1 - p T )( 1 + p T ) \)
37 \( ( 1 - p T )( 1 + p T ) \)
41 \( 1 + 46 T + p^{2} T^{2} \)
43 \( 1 - 14 T + p^{2} T^{2} \)
47 \( ( 1 - p T )( 1 + p T ) \)
53 \( ( 1 - p T )( 1 + p T ) \)
59 \( 1 + 82 T + p^{2} T^{2} \)
61 \( ( 1 - p T )( 1 + p T ) \)
67 \( 1 - 62 T + p^{2} T^{2} \)
71 \( ( 1 - p T )( 1 + p T ) \)
73 \( 1 + 142 T + p^{2} T^{2} \)
79 \( ( 1 - p T )( 1 + p T ) \)
83 \( 1 - 158 T + p^{2} T^{2} \)
89 \( 1 - 146 T + p^{2} T^{2} \)
97 \( 1 + 94 T + p^{2} T^{2} \)
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   \(L(s) = \displaystyle\prod_p \ \prod_{j=1}^{2} (1 - \alpha_{j,p}\, p^{-s})^{-1}\)

Imaginary part of the first few zeros on the critical line

−21.87048677617965783923537238867, −20.22348755982430789264039507830, −18.98117139949859357867964680426, −17.39390564234539719905896023939, −16.66238633994296888505128348462, −14.78865148952925327223857635554, −12.10310589791838852466797231478, −10.76188679715007134885201539453, −8.799074388015237098898553961892, −6.45219985833962822825614349363, 6.45219985833962822825614349363, 8.799074388015237098898553961892, 10.76188679715007134885201539453, 12.10310589791838852466797231478, 14.78865148952925327223857635554, 16.66238633994296888505128348462, 17.39390564234539719905896023939, 18.98117139949859357867964680426, 20.22348755982430789264039507830, 21.87048677617965783923537238867

Graph of the $Z$-function along the critical line