Properties

Label 2-2e3-8.3-c4-0-1
Degree $2$
Conductor $8$
Sign $1$
Analytic cond. $0.826959$
Root an. cond. $0.909373$
Motivic weight $4$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $0$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 4·2-s − 14·3-s + 16·4-s − 56·6-s + 64·8-s + 115·9-s − 46·11-s − 224·12-s + 256·16-s − 574·17-s + 460·18-s + 434·19-s − 184·22-s − 896·24-s + 625·25-s − 476·27-s + 1.02e3·32-s + 644·33-s − 2.29e3·34-s + 1.84e3·36-s + 1.73e3·38-s − 1.24e3·41-s − 3.50e3·43-s − 736·44-s − 3.58e3·48-s + 2.40e3·49-s + 2.50e3·50-s + ⋯
L(s)  = 1  + 2-s − 1.55·3-s + 4-s − 1.55·6-s + 8-s + 1.41·9-s − 0.380·11-s − 1.55·12-s + 16-s − 1.98·17-s + 1.41·18-s + 1.20·19-s − 0.380·22-s − 1.55·24-s + 25-s − 0.652·27-s + 32-s + 0.591·33-s − 1.98·34-s + 1.41·36-s + 1.20·38-s − 0.741·41-s − 1.89·43-s − 0.380·44-s − 1.55·48-s + 49-s + 50-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & \, \Lambda(5-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 8 ^{s/2} \, \Gamma_{\C}(s+2) \, L(s)\cr =\mathstrut & \, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(8\)    =    \(2^{3}\)
Sign: $1$
Analytic conductor: \(0.826959\)
Root analytic conductor: \(0.909373\)
Motivic weight: \(4\)
Rational: yes
Arithmetic: yes
Character: $\chi_{8} (3, \cdot )$
Primitive: yes
Self-dual: yes
Analytic rank: \(0\)
Selberg data: \((2,\ 8,\ (\ :2),\ 1)\)

Particular Values

\(L(\frac{5}{2})\) \(\approx\) \(1.102297224\)
\(L(\frac12)\) \(\approx\) \(1.102297224\)
\(L(3)\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 - p^{2} T \)
good3 \( 1 + 14 T + p^{4} T^{2} \)
5 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
7 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
11 \( 1 + 46 T + p^{4} T^{2} \)
13 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
17 \( 1 + 574 T + p^{4} T^{2} \)
19 \( 1 - 434 T + p^{4} T^{2} \)
23 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
29 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
31 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
37 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
41 \( 1 + 1246 T + p^{4} T^{2} \)
43 \( 1 + 3502 T + p^{4} T^{2} \)
47 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
53 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
59 \( 1 + 238 T + p^{4} T^{2} \)
61 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
67 \( 1 + 5134 T + p^{4} T^{2} \)
71 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
73 \( 1 - 9506 T + p^{4} T^{2} \)
79 \( ( 1 - p^{2} T )( 1 + p^{2} T ) \)
83 \( 1 - 11186 T + p^{4} T^{2} \)
89 \( 1 - 5474 T + p^{4} T^{2} \)
97 \( 1 + 9982 T + p^{4} T^{2} \)
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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

−21.87154101837720099307701417636, −20.22346760649820502538164194536, −18.09956007309929382048504864517, −16.66259023739137137276789694294, −15.47925433222068016089592852164, −13.32774194787948632114753463965, −11.87049028069603400213599156636, −10.73811589325915176885578282965, −6.69768504379387003991406451607, −5.01594537282362360148542834223, 5.01594537282362360148542834223, 6.69768504379387003991406451607, 10.73811589325915176885578282965, 11.87049028069603400213599156636, 13.32774194787948632114753463965, 15.47925433222068016089592852164, 16.66259023739137137276789694294, 18.09956007309929382048504864517, 20.22346760649820502538164194536, 21.87154101837720099307701417636

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