Properties

Label 1098.2.x.a
Level $1098$
Weight $2$
Character orbit 1098.x
Analytic conductor $8.768$
Analytic rank $0$
Dimension $8$
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1098,2,Mod(163,1098)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1098, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([0, 9]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1098.163");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1098 = 2 \cdot 3^{2} \cdot 61 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1098.x (of order \(10\), degree \(4\), 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: \(8.76757414194\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(2\) over \(\Q(\zeta_{10})\)
Coefficient field: \(\Q(\zeta_{20})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{6} + x^{4} - x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 366)
Sato-Tate group: $\mathrm{SU}(2)[C_{10}]$

$q$-expansion

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

Coefficients of the \(q\)-expansion are expressed in terms of a primitive root of unity \(\zeta_{20}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \zeta_{20}^{7} + \zeta_{20}^{5} + \cdots + \zeta_{20}) q^{2}+ \cdots - \zeta_{20}^{7} q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{20}^{7} + \zeta_{20}^{5} + \cdots + \zeta_{20}) q^{2}+ \cdots + ( - 5 \zeta_{20}^{7} - 2 \zeta_{20}^{6} + \cdots + 6) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 2 q^{4} + 2 q^{5} + 10 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 2 q^{4} + 2 q^{5} + 10 q^{7} - 28 q^{13} + 4 q^{14} - 2 q^{16} - 10 q^{19} + 8 q^{20} - 10 q^{23} - 12 q^{25} + 10 q^{26} + 10 q^{28} - 20 q^{31} + 16 q^{34} + 10 q^{35} - 10 q^{37} + 14 q^{41} + 10 q^{43} - 10 q^{44} - 8 q^{46} + 16 q^{47} + 24 q^{49} - 2 q^{52} + 30 q^{55} + 6 q^{56} - 22 q^{58} - 30 q^{59} - 12 q^{61} - 20 q^{62} + 2 q^{64} - 2 q^{65} - 60 q^{67} + 16 q^{70} - 30 q^{71} + 2 q^{73} + 24 q^{74} - 10 q^{77} + 40 q^{79} - 8 q^{80} - 12 q^{83} - 32 q^{86} - 30 q^{89} - 10 q^{91} - 20 q^{92} + 30 q^{95} + 4 q^{97} + 40 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1098\mathbb{Z}\right)^\times\).

\(n\) \(245\) \(307\)
\(\chi(n)\) \(1\) \(1 - \zeta_{20}^{2} + \zeta_{20}^{4} - \zeta_{20}^{6}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
163.1
−0.951057 0.309017i
0.951057 + 0.309017i
−0.587785 0.809017i
0.587785 + 0.809017i
−0.587785 + 0.809017i
0.587785 0.809017i
−0.951057 + 0.309017i
0.951057 0.309017i
−0.951057 + 0.309017i 0 0.809017 0.587785i −1.84786 + 1.34255i 0 1.38821 + 0.451057i −0.587785 + 0.809017i 0 1.34255 1.84786i
163.2 0.951057 0.309017i 0 0.809017 0.587785i 1.22982 0.893520i 0 4.46589 + 1.45106i 0.587785 0.809017i 0 0.893520 1.22982i
235.1 −0.587785 + 0.809017i 0 −0.309017 0.951057i 1.17229 + 3.60793i 0 −0.0637797 0.0877853i 0.951057 + 0.309017i 0 −3.60793 1.17229i
235.2 0.587785 0.809017i 0 −0.309017 0.951057i 0.445746 + 1.37186i 0 −0.790322 1.08779i −0.951057 0.309017i 0 1.37186 + 0.445746i
271.1 −0.587785 0.809017i 0 −0.309017 + 0.951057i 1.17229 3.60793i 0 −0.0637797 + 0.0877853i 0.951057 0.309017i 0 −3.60793 + 1.17229i
271.2 0.587785 + 0.809017i 0 −0.309017 + 0.951057i 0.445746 1.37186i 0 −0.790322 + 1.08779i −0.951057 + 0.309017i 0 1.37186 0.445746i
613.1 −0.951057 0.309017i 0 0.809017 + 0.587785i −1.84786 1.34255i 0 1.38821 0.451057i −0.587785 0.809017i 0 1.34255 + 1.84786i
613.2 0.951057 + 0.309017i 0 0.809017 + 0.587785i 1.22982 + 0.893520i 0 4.46589 1.45106i 0.587785 + 0.809017i 0 0.893520 + 1.22982i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 163.2
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
61.g even 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1098.2.x.a 8
3.b odd 2 1 366.2.l.a 8
61.g even 10 1 inner 1098.2.x.a 8
183.l odd 10 1 366.2.l.a 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
366.2.l.a 8 3.b odd 2 1
366.2.l.a 8 183.l odd 10 1
1098.2.x.a 8 1.a even 1 1 trivial
1098.2.x.a 8 61.g even 10 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{8} - 2T_{5}^{7} + 13T_{5}^{6} + 6T_{5}^{5} + 5T_{5}^{4} - 54T_{5}^{3} + 253T_{5}^{2} - 342T_{5} + 361 \) acting on \(S_{2}^{\mathrm{new}}(1098, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} - T^{6} + T^{4} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( T^{8} - 2 T^{7} + \cdots + 361 \) Copy content Toggle raw display
$7$ \( T^{8} - 10 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( (T^{4} + 10 T^{2} + 5)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 14 T^{3} + \cdots + 41)^{2} \) Copy content Toggle raw display
$17$ \( T^{8} - 64 T^{6} + \cdots + 65536 \) Copy content Toggle raw display
$19$ \( T^{8} + 10 T^{7} + \cdots + 9025 \) Copy content Toggle raw display
$23$ \( T^{8} + 10 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( T^{8} + 104 T^{6} + \cdots + 3481 \) Copy content Toggle raw display
$31$ \( T^{8} + 20 T^{7} + \cdots + 4818025 \) Copy content Toggle raw display
$37$ \( T^{8} + 10 T^{7} + \cdots + 361 \) Copy content Toggle raw display
$41$ \( (T^{4} - 7 T^{3} + \cdots + 121)^{2} \) Copy content Toggle raw display
$43$ \( T^{8} - 10 T^{7} + \cdots + 10201 \) Copy content Toggle raw display
$47$ \( (T^{4} - 8 T^{3} + \cdots + 181)^{2} \) Copy content Toggle raw display
$53$ \( T^{8} - T^{6} + \cdots + 78961 \) Copy content Toggle raw display
$59$ \( T^{8} + 30 T^{7} + \cdots + 32041 \) Copy content Toggle raw display
$61$ \( T^{8} + 12 T^{7} + \cdots + 13845841 \) Copy content Toggle raw display
$67$ \( T^{8} + 60 T^{7} + \cdots + 85396081 \) Copy content Toggle raw display
$71$ \( T^{8} + 30 T^{7} + \cdots + 1050625 \) Copy content Toggle raw display
$73$ \( T^{8} - 2 T^{7} + \cdots + 39702601 \) Copy content Toggle raw display
$79$ \( T^{8} - 40 T^{7} + \cdots + 1478656 \) Copy content Toggle raw display
$83$ \( T^{8} + 12 T^{7} + \cdots + 430336 \) Copy content Toggle raw display
$89$ \( T^{8} + 30 T^{7} + \cdots + 130321 \) Copy content Toggle raw display
$97$ \( T^{8} - 4 T^{7} + \cdots + 576768256 \) Copy content Toggle raw display
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