Properties

Label 2576.1.cq.b
Level $2576$
Weight $1$
Character orbit 2576.cq
Analytic conductor $1.286$
Analytic rank $0$
Dimension $20$
Projective image $D_{44}$
CM discriminant -7
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2576,1,Mod(13,2576)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2576, base_ring=CyclotomicField(44))
 
chi = DirichletCharacter(H, H._module([0, 33, 22, 28]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2576.13");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2576 = 2^{4} \cdot 7 \cdot 23 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2576.cq (of order \(44\), 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: \(1.28559147254\)
Analytic rank: \(0\)
Dimension: \(20\)
Coefficient field: \(\Q(\zeta_{44})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{20} - x^{18} + x^{16} - x^{14} + x^{12} - x^{10} + x^{8} - x^{6} + x^{4} - x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{44}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{44} - \cdots)\)

$q$-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.

\(f(q)\) \(=\) \( q - \zeta_{44}^{17} q^{2} - \zeta_{44}^{12} q^{4} - \zeta_{44}^{9} q^{7} - \zeta_{44}^{7} q^{8} - \zeta_{44}^{3} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q - \zeta_{44}^{17} q^{2} - \zeta_{44}^{12} q^{4} - \zeta_{44}^{9} q^{7} - \zeta_{44}^{7} q^{8} - \zeta_{44}^{3} q^{9} + (\zeta_{44}^{21} + \zeta_{44}^{2}) q^{11} - \zeta_{44}^{4} q^{14} - \zeta_{44}^{2} q^{16} + \zeta_{44}^{20} q^{18} + ( - \zeta_{44}^{19} + \zeta_{44}^{16}) q^{22} - \zeta_{44}^{8} q^{23} - \zeta_{44}^{5} q^{25} + \zeta_{44}^{21} q^{28} + (\zeta_{44}^{18} - \zeta_{44}^{17}) q^{29} + \zeta_{44}^{19} q^{32} + \zeta_{44}^{15} q^{36} + ( - \zeta_{44}^{16} + \zeta_{44}) q^{37} + (\zeta_{44}^{15} - \zeta_{44}^{10}) q^{43} + ( - \zeta_{44}^{14} + \zeta_{44}^{11}) q^{44} - \zeta_{44}^{3} q^{46} + \zeta_{44}^{18} q^{49} - q^{50} + (\zeta_{44}^{4} + \zeta_{44}^{3}) q^{53} + \zeta_{44}^{16} q^{56} + (\zeta_{44}^{13} - \zeta_{44}^{12}) q^{58} + \zeta_{44}^{12} q^{63} + \zeta_{44}^{14} q^{64} + ( - \zeta_{44}^{15} - \zeta_{44}^{6}) q^{67} + (\zeta_{44}^{9} + \zeta_{44}) q^{71} + \zeta_{44}^{10} q^{72} + ( - \zeta_{44}^{18} - \zeta_{44}^{11}) q^{74} + ( - \zeta_{44}^{11} + \zeta_{44}^{8}) q^{77} + (\zeta_{44}^{19} - \zeta_{44}^{7}) q^{79} + \zeta_{44}^{6} q^{81} + (\zeta_{44}^{10} - \zeta_{44}^{5}) q^{86} + ( - \zeta_{44}^{9} + \zeta_{44}^{6}) q^{88} + \zeta_{44}^{20} q^{92} + \zeta_{44}^{13} q^{98} + ( - \zeta_{44}^{5} + \zeta_{44}^{2}) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 20 q + 2 q^{4}+O(q^{10}) \) Copy content Toggle raw display \( 20 q + 2 q^{4} + 2 q^{11} + 2 q^{14} - 2 q^{16} - 2 q^{18} - 2 q^{22} + 2 q^{23} + 2 q^{29} + 2 q^{37} - 2 q^{43} - 2 q^{44} + 2 q^{49} - 20 q^{50} - 2 q^{53} - 2 q^{56} + 2 q^{58} - 2 q^{63} + 2 q^{64} - 2 q^{67} + 2 q^{72} - 2 q^{74} - 2 q^{77} + 2 q^{81} + 2 q^{86} + 2 q^{88} - 2 q^{92} + 2 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2576\mathbb{Z}\right)^\times\).

\(n\) \(645\) \(1473\) \(1569\) \(2255\)
\(\chi(n)\) \(\zeta_{44}^{11}\) \(-1\) \(\zeta_{44}^{16}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
13.1
0.989821 0.142315i
0.755750 0.654861i
0.281733 + 0.959493i
0.540641 + 0.841254i
−0.909632 0.415415i
−0.909632 + 0.415415i
−0.540641 + 0.841254i
−0.755750 0.654861i
0.989821 + 0.142315i
0.281733 0.959493i
−0.989821 + 0.142315i
−0.755750 + 0.654861i
−0.281733 0.959493i
−0.540641 0.841254i
0.909632 + 0.415415i
0.909632 0.415415i
0.540641 0.841254i
0.755750 + 0.654861i
−0.989821 0.142315i
−0.281733 + 0.959493i
0.755750 + 0.654861i 0 0.142315 + 0.989821i 0 0 −0.281733 + 0.959493i −0.540641 + 0.841254i −0.909632 + 0.415415i 0
349.1 −0.909632 0.415415i 0 0.654861 + 0.755750i 0 0 −0.989821 + 0.142315i −0.281733 0.959493i 0.540641 + 0.841254i 0
629.1 0.989821 0.142315i 0 0.959493 0.281733i 0 0 −0.540641 + 0.841254i 0.909632 0.415415i 0.755750 + 0.654861i 0
685.1 0.281733 + 0.959493i 0 −0.841254 + 0.540641i 0 0 0.909632 0.415415i −0.755750 0.654861i 0.989821 0.142315i 0
853.1 0.540641 + 0.841254i 0 −0.415415 + 0.909632i 0 0 −0.755750 0.654861i −0.989821 + 0.142315i 0.281733 + 0.959493i 0
909.1 0.540641 0.841254i 0 −0.415415 0.909632i 0 0 −0.755750 + 0.654861i −0.989821 0.142315i 0.281733 0.959493i 0
1021.1 −0.281733 + 0.959493i 0 −0.841254 0.540641i 0 0 −0.909632 0.415415i 0.755750 0.654861i −0.989821 0.142315i 0
1133.1 0.909632 0.415415i 0 0.654861 0.755750i 0 0 0.989821 + 0.142315i 0.281733 0.959493i −0.540641 + 0.841254i 0
1189.1 0.755750 0.654861i 0 0.142315 0.989821i 0 0 −0.281733 0.959493i −0.540641 0.841254i −0.909632 0.415415i 0
1245.1 0.989821 + 0.142315i 0 0.959493 + 0.281733i 0 0 −0.540641 0.841254i 0.909632 + 0.415415i 0.755750 0.654861i 0
1301.1 −0.755750 0.654861i 0 0.142315 + 0.989821i 0 0 0.281733 0.959493i 0.540641 0.841254i 0.909632 0.415415i 0
1637.1 0.909632 + 0.415415i 0 0.654861 + 0.755750i 0 0 0.989821 0.142315i 0.281733 + 0.959493i −0.540641 0.841254i 0
1917.1 −0.989821 + 0.142315i 0 0.959493 0.281733i 0 0 0.540641 0.841254i −0.909632 + 0.415415i −0.755750 0.654861i 0
1973.1 −0.281733 0.959493i 0 −0.841254 + 0.540641i 0 0 −0.909632 + 0.415415i 0.755750 + 0.654861i −0.989821 + 0.142315i 0
2141.1 −0.540641 0.841254i 0 −0.415415 + 0.909632i 0 0 0.755750 + 0.654861i 0.989821 0.142315i −0.281733 0.959493i 0
2197.1 −0.540641 + 0.841254i 0 −0.415415 0.909632i 0 0 0.755750 0.654861i 0.989821 + 0.142315i −0.281733 + 0.959493i 0
2309.1 0.281733 0.959493i 0 −0.841254 0.540641i 0 0 0.909632 + 0.415415i −0.755750 + 0.654861i 0.989821 + 0.142315i 0
2421.1 −0.909632 + 0.415415i 0 0.654861 0.755750i 0 0 −0.989821 0.142315i −0.281733 + 0.959493i 0.540641 0.841254i 0
2477.1 −0.755750 + 0.654861i 0 0.142315 0.989821i 0 0 0.281733 + 0.959493i 0.540641 + 0.841254i 0.909632 + 0.415415i 0
2533.1 −0.989821 0.142315i 0 0.959493 + 0.281733i 0 0 0.540641 + 0.841254i −0.909632 0.415415i −0.755750 + 0.654861i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 13.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.b odd 2 1 CM by \(\Q(\sqrt{-7}) \)
368.w even 44 1 inner
2576.cq odd 44 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2576.1.cq.b yes 20
7.b odd 2 1 CM 2576.1.cq.b yes 20
16.e even 4 1 2576.1.cq.a 20
23.c even 11 1 2576.1.cq.a 20
112.l odd 4 1 2576.1.cq.a 20
161.l odd 22 1 2576.1.cq.a 20
368.w even 44 1 inner 2576.1.cq.b yes 20
2576.cq odd 44 1 inner 2576.1.cq.b yes 20
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2576.1.cq.a 20 16.e even 4 1
2576.1.cq.a 20 23.c even 11 1
2576.1.cq.a 20 112.l odd 4 1
2576.1.cq.a 20 161.l odd 22 1
2576.1.cq.b yes 20 1.a even 1 1 trivial
2576.1.cq.b yes 20 7.b odd 2 1 CM
2576.1.cq.b yes 20 368.w even 44 1 inner
2576.1.cq.b yes 20 2576.cq odd 44 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{11}^{20} - 2 T_{11}^{19} + 2 T_{11}^{18} - 22 T_{11}^{17} + 40 T_{11}^{16} - 36 T_{11}^{15} + \cdots + 1 \) acting on \(S_{1}^{\mathrm{new}}(2576, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{20} - T^{18} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{20} \) Copy content Toggle raw display
$5$ \( T^{20} \) Copy content Toggle raw display
$7$ \( T^{20} - T^{18} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{20} - 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( T^{20} \) Copy content Toggle raw display
$17$ \( T^{20} \) Copy content Toggle raw display
$19$ \( T^{20} \) Copy content Toggle raw display
$23$ \( (T^{10} - T^{9} + T^{8} + \cdots + 1)^{2} \) Copy content Toggle raw display
$29$ \( T^{20} - 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{20} \) Copy content Toggle raw display
$37$ \( T^{20} - 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$41$ \( T^{20} \) Copy content Toggle raw display
$43$ \( T^{20} + 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$47$ \( T^{20} \) Copy content Toggle raw display
$53$ \( T^{20} + 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$59$ \( T^{20} \) Copy content Toggle raw display
$61$ \( T^{20} \) Copy content Toggle raw display
$67$ \( T^{20} + 2 T^{19} + \cdots + 1 \) Copy content Toggle raw display
$71$ \( T^{20} - 4 T^{18} + \cdots + 1 \) Copy content Toggle raw display
$73$ \( T^{20} \) Copy content Toggle raw display
$79$ \( T^{20} + 55 T^{14} + \cdots + 121 \) Copy content Toggle raw display
$83$ \( T^{20} \) Copy content Toggle raw display
$89$ \( T^{20} \) Copy content Toggle raw display
$97$ \( T^{20} \) Copy content Toggle raw display
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