Properties

Label 2008.1.w.a
Level $2008$
Weight $1$
Character orbit 2008.w
Analytic conductor $1.002$
Analytic rank $0$
Dimension $20$
Projective image $D_{25}$
CM discriminant -8
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2008,1,Mod(51,2008)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2008, base_ring=CyclotomicField(50))
 
chi = DirichletCharacter(H, H._module([25, 25, 18]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2008.51");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2008 = 2^{3} \cdot 251 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2008.w (of order \(50\), degree \(20\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(1.00212254537\)
Analytic rank: \(0\)
Dimension: \(20\)
Coefficient field: \(\Q(\zeta_{50})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{20} - x^{15} + x^{10} - x^{5} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{9}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{25}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{25} - \cdots)\)

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q - \zeta_{50}^{5} q^{2} + (\zeta_{50}^{4} + \zeta_{50}^{2}) q^{3} + \zeta_{50}^{10} q^{4} + ( - \zeta_{50}^{9} - \zeta_{50}^{7}) q^{6} - \zeta_{50}^{15} q^{8} + (\zeta_{50}^{8} + \cdots + \zeta_{50}^{4}) q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{50}^{5} q^{2} + (\zeta_{50}^{4} + \zeta_{50}^{2}) q^{3} + \zeta_{50}^{10} q^{4} + ( - \zeta_{50}^{9} - \zeta_{50}^{7}) q^{6} - \zeta_{50}^{15} q^{8} + (\zeta_{50}^{8} + \cdots + \zeta_{50}^{4}) q^{9} + \cdots + (\zeta_{50}^{24} + \zeta_{50}^{14} + \cdots - \zeta_{50}) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 20 q - 5 q^{2} - 5 q^{4} - 5 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 20 q - 5 q^{2} - 5 q^{4} - 5 q^{8} - 5 q^{11} - 5 q^{16} + 20 q^{22} - 5 q^{25} - 5 q^{27} + 20 q^{32} - 5 q^{33} - 5 q^{44} - 5 q^{50} - 5 q^{54} - 5 q^{59} - 5 q^{64} - 5 q^{66} - 5 q^{81} - 5 q^{83} - 5 q^{88} - 5 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2008\mathbb{Z}\right)^\times\).

\(n\) \(257\) \(503\) \(1005\)
\(\chi(n)\) \(\zeta_{50}^{16}\) \(-1\) \(-1\)

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
51.1
−0.968583 + 0.248690i
−0.876307 + 0.481754i
−0.728969 + 0.684547i
−0.0627905 0.998027i
0.992115 + 0.125333i
0.637424 0.770513i
−0.968583 0.248690i
−0.876307 0.481754i
0.187381 + 0.982287i
−0.0627905 + 0.998027i
−0.535827 0.844328i
0.425779 0.904827i
0.425779 + 0.904827i
−0.728969 0.684547i
0.637424 + 0.770513i
0.929776 0.368125i
0.187381 0.982287i
0.929776 + 0.368125i
−0.535827 + 0.844328i
0.992115 0.125333i
0.309017 0.951057i 1.41213 1.32608i −0.809017 0.587785i 0 −0.824805 1.75280i 0 −0.809017 + 0.587785i 0.172838 2.74718i 0
91.1 −0.809017 0.587785i 0.110048 1.74915i 0.309017 + 0.951057i 0 −1.11716 + 1.35041i 0 0.309017 0.951057i −2.05532 0.259647i 0
123.1 −0.809017 + 0.587785i −0.929324 1.12336i 0.309017 0.951057i 0 1.41213 + 0.362574i 0 0.309017 + 0.951057i −0.210913 + 1.10564i 0
211.1 0.309017 + 0.951057i −0.0235315 0.123357i −0.809017 + 0.587785i 0 0.110048 0.0604991i 0 −0.809017 0.587785i 0.915113 0.362319i 0
243.1 −0.809017 0.587785i 1.84489 + 0.730444i 0.309017 + 0.951057i 0 −1.06320 1.67534i 0 0.309017 0.951057i 2.14110 + 2.01063i 0
267.1 0.309017 0.951057i −1.11716 0.614163i −0.809017 0.587785i 0 −0.929324 + 0.872693i 0 −0.809017 + 0.587785i 0.335019 + 0.527905i 0
315.1 0.309017 + 0.951057i 1.41213 + 1.32608i −0.809017 + 0.587785i 0 −0.824805 + 1.75280i 0 −0.809017 0.587785i 0.172838 + 2.74718i 0
331.1 −0.809017 + 0.587785i 0.110048 + 1.74915i 0.309017 0.951057i 0 −1.11716 1.35041i 0 0.309017 + 0.951057i −2.05532 + 0.259647i 0
507.1 −0.809017 0.587785i −0.200808 0.316423i 0.309017 + 0.951057i 0 −0.0235315 + 0.374023i 0 0.309017 0.951057i 0.365980 0.777747i 0
571.1 0.309017 0.951057i −0.0235315 + 0.123357i −0.809017 0.587785i 0 0.110048 + 0.0604991i 0 −0.809017 + 0.587785i 0.915113 + 0.362319i 0
627.1 0.309017 0.951057i −1.06320 + 0.134314i −0.809017 0.587785i 0 −0.200808 + 1.05267i 0 −0.809017 + 0.587785i 0.143778 0.0369159i 0
1067.1 −0.809017 0.587785i −0.824805 + 0.211774i 0.309017 + 0.951057i 0 0.791759 + 0.313480i 0 0.309017 0.951057i −0.240851 + 0.132409i 0
1259.1 −0.809017 + 0.587785i −0.824805 0.211774i 0.309017 0.951057i 0 0.791759 0.313480i 0 0.309017 + 0.951057i −0.240851 0.132409i 0
1355.1 −0.809017 0.587785i −0.929324 + 1.12336i 0.309017 + 0.951057i 0 1.41213 0.362574i 0 0.309017 0.951057i −0.210913 1.10564i 0
1459.1 0.309017 + 0.951057i −1.11716 + 0.614163i −0.809017 + 0.587785i 0 −0.929324 0.872693i 0 −0.809017 0.587785i 0.335019 0.527905i 0
1531.1 0.309017 + 0.951057i 0.791759 1.68257i −0.809017 + 0.587785i 0 1.84489 + 0.233064i 0 −0.809017 0.587785i −1.56675 1.89387i 0
1707.1 −0.809017 + 0.587785i −0.200808 + 0.316423i 0.309017 0.951057i 0 −0.0235315 0.374023i 0 0.309017 + 0.951057i 0.365980 + 0.777747i 0
1747.1 0.309017 0.951057i 0.791759 + 1.68257i −0.809017 0.587785i 0 1.84489 0.233064i 0 −0.809017 + 0.587785i −1.56675 + 1.89387i 0
1755.1 0.309017 + 0.951057i −1.06320 0.134314i −0.809017 + 0.587785i 0 −0.200808 1.05267i 0 −0.809017 0.587785i 0.143778 + 0.0369159i 0
1851.1 −0.809017 + 0.587785i 1.84489 0.730444i 0.309017 0.951057i 0 −1.06320 + 1.67534i 0 0.309017 + 0.951057i 2.14110 2.01063i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 51.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
8.d odd 2 1 CM by \(\Q(\sqrt{-2}) \)
251.e even 25 1 inner
2008.w odd 50 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2008.1.w.a 20
8.d odd 2 1 CM 2008.1.w.a 20
251.e even 25 1 inner 2008.1.w.a 20
2008.w odd 50 1 inner 2008.1.w.a 20
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2008.1.w.a 20 1.a even 1 1 trivial
2008.1.w.a 20 8.d odd 2 1 CM
2008.1.w.a 20 251.e even 25 1 inner
2008.1.w.a 20 2008.w odd 50 1 inner

Hecke kernels

This newform subspace is the entire newspace \(S_{1}^{\mathrm{new}}(2008, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T^{4} + T^{3} + T^{2} + \cdots + 1)^{5} \) Copy content Toggle raw display
$3$ \( T^{20} + 5 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$5$ \( T^{20} \) Copy content Toggle raw display
$7$ \( T^{20} \) Copy content Toggle raw display
$11$ \( T^{20} + 5 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( T^{20} \) Copy content Toggle raw display
$17$ \( T^{20} + 32 T^{15} + \cdots + 1048576 \) Copy content Toggle raw display
$19$ \( T^{20} - 18 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$23$ \( T^{20} \) Copy content Toggle raw display
$29$ \( T^{20} \) Copy content Toggle raw display
$31$ \( T^{20} \) Copy content Toggle raw display
$37$ \( T^{20} \) Copy content Toggle raw display
$41$ \( T^{20} + 5 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$43$ \( T^{20} + 5 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$47$ \( T^{20} \) Copy content Toggle raw display
$53$ \( T^{20} \) Copy content Toggle raw display
$59$ \( T^{20} + 5 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$61$ \( T^{20} \) Copy content Toggle raw display
$67$ \( T^{20} - 20 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$71$ \( T^{20} \) Copy content Toggle raw display
$73$ \( T^{20} + 7 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$79$ \( T^{20} \) Copy content Toggle raw display
$83$ \( T^{20} + 5 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$89$ \( T^{20} + 5 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$97$ \( T^{20} + 5 T^{17} + \cdots + 1 \) Copy content Toggle raw display
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