Properties

Label 1008.4.b.j
Level $1008$
Weight $4$
Character orbit 1008.b
Analytic conductor $59.474$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1008,4,Mod(559,1008)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1008, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 0, 0, 1]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1008.559");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1008 = 2^{4} \cdot 3^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 1008.b (of order \(2\), degree \(1\), 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: \(59.4739252858\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.77720518656.7
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 12x^{6} + 119x^{4} + 300x^{2} + 625 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{16}\cdot 3^{2} \)
Twist minimal: no (minimal twist has level 112)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 basis \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_1 q^{5} + ( - \beta_{5} + \beta_{4} - \beta_{2}) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_1 q^{5} + ( - \beta_{5} + \beta_{4} - \beta_{2}) q^{7} + ( - 2 \beta_{6} - 2 \beta_{5} - \beta_{2}) q^{11} + ( - 3 \beta_{3} - 2 \beta_1) q^{13} + (\beta_{3} + 9 \beta_1) q^{17} + (3 \beta_{6} - 3 \beta_{5} - 11 \beta_{4}) q^{19} - 5 \beta_{2} q^{23} + (\beta_{7} + 53) q^{25} + ( - 2 \beta_{7} + 42) q^{29} + ( - 5 \beta_{6} + 5 \beta_{5}) q^{31} + ( - 7 \beta_{6} - 3 \beta_{5} + \cdots + 25 \beta_{2}) q^{35}+ \cdots + (21 \beta_{3} - 47 \beta_1) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q + 424 q^{25} + 336 q^{29} - 784 q^{37} + 200 q^{49} - 624 q^{53} + 576 q^{65} - 4656 q^{77} - 4992 q^{85}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 12x^{6} + 119x^{4} + 300x^{2} + 625 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 24\nu^{7} + 238\nu^{5} + 2856\nu^{3} + 13150\nu ) / 2975 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -48\nu^{6} - 476\nu^{4} - 5712\nu^{2} - 8450 ) / 2975 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -56\nu^{7} - 1122\nu^{5} - 10064\nu^{3} - 44850\nu ) / 2125 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -456\nu^{7} - 4522\nu^{5} - 42364\nu^{3} - 23750\nu ) / 14875 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 96\nu^{7} - 1310\nu^{6} + 952\nu^{5} - 15470\nu^{4} - 476\nu^{3} - 126140\nu^{2} + 5000\nu - 199625 ) / 14875 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -96\nu^{7} - 1310\nu^{6} - 952\nu^{5} - 15470\nu^{4} + 476\nu^{3} - 126140\nu^{2} - 5000\nu - 199625 ) / 14875 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -12\nu^{6} + 4968 ) / 119 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{6} + \beta_{5} + 2\beta_{4} + 6\beta_1 ) / 24 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} + 3\beta_{6} + 3\beta_{5} - 39\beta_{2} - 72 ) / 24 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 19\beta_{6} - 19\beta_{5} - 8\beta_{4} ) / 24 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 2\beta_{7} - 6\beta_{6} - 6\beta_{5} + 53\beta_{2} - 94 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -89\beta_{6} + 89\beta_{5} - 2\beta_{4} - 90\beta_{3} - 444\beta_1 ) / 24 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -119\beta_{7} + 4968 ) / 12 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -1661\beta_{6} + 1661\beta_{5} - 248\beta_{4} + 1785\beta_{3} + 8181\beta_1 ) / 48 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1008\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(577\) \(757\) \(785\)
\(\chi(n)\) \(-1\) \(-1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
559.1
1.52616 2.64338i
−1.52616 2.64338i
−0.819051 1.41864i
0.819051 1.41864i
−0.819051 + 1.41864i
0.819051 + 1.41864i
1.52616 + 2.64338i
−1.52616 + 2.64338i
0 0 0 10.5735i 0 −17.4183 + 6.29297i 0 0 0
559.2 0 0 0 10.5735i 0 17.4183 6.29297i 0 0 0
559.3 0 0 0 5.67455i 0 −8.03751 + 16.6853i 0 0 0
559.4 0 0 0 5.67455i 0 8.03751 16.6853i 0 0 0
559.5 0 0 0 5.67455i 0 −8.03751 16.6853i 0 0 0
559.6 0 0 0 5.67455i 0 8.03751 + 16.6853i 0 0 0
559.7 0 0 0 10.5735i 0 −17.4183 6.29297i 0 0 0
559.8 0 0 0 10.5735i 0 17.4183 + 6.29297i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 559.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
7.b odd 2 1 inner
28.d even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1008.4.b.j 8
3.b odd 2 1 112.4.f.b 8
4.b odd 2 1 inner 1008.4.b.j 8
7.b odd 2 1 inner 1008.4.b.j 8
12.b even 2 1 112.4.f.b 8
21.c even 2 1 112.4.f.b 8
24.f even 2 1 448.4.f.c 8
24.h odd 2 1 448.4.f.c 8
28.d even 2 1 inner 1008.4.b.j 8
84.h odd 2 1 112.4.f.b 8
168.e odd 2 1 448.4.f.c 8
168.i even 2 1 448.4.f.c 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
112.4.f.b 8 3.b odd 2 1
112.4.f.b 8 12.b even 2 1
112.4.f.b 8 21.c even 2 1
112.4.f.b 8 84.h odd 2 1
448.4.f.c 8 24.f even 2 1
448.4.f.c 8 24.h odd 2 1
448.4.f.c 8 168.e odd 2 1
448.4.f.c 8 168.i even 2 1
1008.4.b.j 8 1.a even 1 1 trivial
1008.4.b.j 8 4.b odd 2 1 inner
1008.4.b.j 8 7.b odd 2 1 inner
1008.4.b.j 8 28.d even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(1008, [\chi])\):

\( T_{5}^{4} + 144T_{5}^{2} + 3600 \) Copy content Toggle raw display
\( T_{19}^{4} - 23312T_{19}^{2} + 135024400 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( (T^{4} + 144 T^{2} + 3600)^{2} \) Copy content Toggle raw display
$7$ \( T^{8} + \cdots + 13841287201 \) Copy content Toggle raw display
$11$ \( (T^{4} + 4440 T^{2} + 4016016)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 6480 T^{2} + 9659664)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 11520 T^{2} + 7225344)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 23312 T^{2} + 135024400)^{2} \) Copy content Toggle raw display
$23$ \( (T^{2} + 300)^{4} \) Copy content Toggle raw display
$29$ \( (T^{2} - 84 T - 4572)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} - 32000 T^{2} + 2560000)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 196 T - 47420)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} + 211776 T^{2} + 7177478400)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 182232 T^{2} + 5508608400)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} - 357120 T^{2} + 23475142656)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} + 156 T - 19260)^{4} \) Copy content Toggle raw display
$59$ \( (T^{4} - 384912 T^{2} + 35381610000)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 287376 T^{2} + 18829328400)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + 914712 T^{2} + 22770810000)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 1467000 T^{2} + 499990410000)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 153024 T^{2} + 5788166400)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} + 565560 T^{2} + 76089912336)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + \cdots + 1021805592336)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + \cdots + 2942185478400)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 730368 T^{2} + 60115193856)^{2} \) Copy content Toggle raw display
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