Properties

Label 2-1920-1.1-c1-0-30
Degree $2$
Conductor $1920$
Sign $-1$
Analytic cond. $15.3312$
Root an. cond. $3.91551$
Motivic weight $1$
Arithmetic yes
Rational yes
Primitive yes
Self-dual yes
Analytic rank $1$

Origins

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Normalization:  

Dirichlet series

L(s)  = 1  + 3-s + 5-s − 4·7-s + 9-s − 2·11-s + 15-s − 4·21-s − 8·23-s + 25-s + 27-s + 2·29-s − 2·31-s − 2·33-s − 4·35-s − 8·37-s − 2·41-s + 4·43-s + 45-s + 9·49-s − 6·53-s − 2·55-s − 14·59-s − 14·61-s − 4·63-s − 4·67-s − 8·69-s + 8·71-s + ⋯
L(s)  = 1  + 0.577·3-s + 0.447·5-s − 1.51·7-s + 1/3·9-s − 0.603·11-s + 0.258·15-s − 0.872·21-s − 1.66·23-s + 1/5·25-s + 0.192·27-s + 0.371·29-s − 0.359·31-s − 0.348·33-s − 0.676·35-s − 1.31·37-s − 0.312·41-s + 0.609·43-s + 0.149·45-s + 9/7·49-s − 0.824·53-s − 0.269·55-s − 1.82·59-s − 1.79·61-s − 0.503·63-s − 0.488·67-s − 0.963·69-s + 0.949·71-s + ⋯

Functional equation

\[\begin{aligned}\Lambda(s)=\mathstrut & 1920 ^{s/2} \, \Gamma_{\C}(s) \, L(s)\cr =\mathstrut & -\, \Lambda(2-s) \end{aligned}\]
\[\begin{aligned}\Lambda(s)=\mathstrut & 1920 ^{s/2} \, \Gamma_{\C}(s+1/2) \, L(s)\cr =\mathstrut & -\, \Lambda(1-s) \end{aligned}\]

Invariants

Degree: \(2\)
Conductor: \(1920\)    =    \(2^{7} \cdot 3 \cdot 5\)
Sign: $-1$
Analytic conductor: \(15.3312\)
Root analytic conductor: \(3.91551\)
Motivic weight: \(1\)
Rational: yes
Arithmetic: yes
Character: Trivial
Primitive: yes
Self-dual: yes
Analytic rank: \(1\)
Selberg data: \((2,\ 1920,\ (\ :1/2),\ -1)\)

Particular Values

\(L(1)\) \(=\) \(0\)
\(L(\frac12)\) \(=\) \(0\)
\(L(\frac{3}{2})\) not available
\(L(1)\) not available

Euler product

   \(L(s) = \displaystyle \prod_{p} F_p(p^{-s})^{-1} \)
$p$$F_p(T)$
bad2 \( 1 \)
3 \( 1 - T \)
5 \( 1 - T \)
good7 \( 1 + 4 T + p T^{2} \)
11 \( 1 + 2 T + p T^{2} \)
13 \( 1 + p T^{2} \)
17 \( 1 + p T^{2} \)
19 \( 1 + p T^{2} \)
23 \( 1 + 8 T + p T^{2} \)
29 \( 1 - 2 T + p T^{2} \)
31 \( 1 + 2 T + p T^{2} \)
37 \( 1 + 8 T + p T^{2} \)
41 \( 1 + 2 T + p T^{2} \)
43 \( 1 - 4 T + p T^{2} \)
47 \( 1 + p T^{2} \)
53 \( 1 + 6 T + p T^{2} \)
59 \( 1 + 14 T + p T^{2} \)
61 \( 1 + 14 T + p T^{2} \)
67 \( 1 + 4 T + p T^{2} \)
71 \( 1 - 8 T + p T^{2} \)
73 \( 1 + 10 T + p T^{2} \)
79 \( 1 - 6 T + p T^{2} \)
83 \( 1 + 12 T + p T^{2} \)
89 \( 1 - 14 T + p T^{2} \)
97 \( 1 - 18 T + p T^{2} \)
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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

−8.975784482874164468937827444067, −8.041289019730938230132967860356, −7.26926784547186801970456113424, −6.35748243975676630013335276192, −5.81966760462348143512239602629, −4.64099478965301858716726482454, −3.55892389127543084754638209246, −2.88655292546004445931032442741, −1.84416625898130938268214518612, 0, 1.84416625898130938268214518612, 2.88655292546004445931032442741, 3.55892389127543084754638209246, 4.64099478965301858716726482454, 5.81966760462348143512239602629, 6.35748243975676630013335276192, 7.26926784547186801970456113424, 8.041289019730938230132967860356, 8.975784482874164468937827444067

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