Properties

Label 2304.2.l.a
Level $2304$
Weight $2$
Character orbit 2304.l
Analytic conductor $18.398$
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] = [2304,2,Mod(575,2304)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2304, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 1, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2304.575");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2304 = 2^{8} \cdot 3^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2304.l (of order \(4\), degree \(2\), 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: \(18.3975326257\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(i)\)
Coefficient field: 8.0.157351936.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + x^{4} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{6} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q + ( - \beta_{4} - \beta_1) q^{5} + (\beta_{7} - \beta_1) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{4} - \beta_1) q^{5} + (\beta_{7} - \beta_1) q^{7} + ( - \beta_{6} + \beta_{2} - 1) q^{11} + ( - \beta_{5} - 2 \beta_{2} - 2) q^{13} + ( - \beta_{7} + \beta_{4} + \cdots - \beta_1) q^{17}+ \cdots + (\beta_{6} + \beta_{5} + 8) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 8 q^{11} - 16 q^{13} + 56 q^{35} - 8 q^{37} + 48 q^{47} + 56 q^{49} - 32 q^{59} - 40 q^{61} + 24 q^{83} - 40 q^{85} - 16 q^{95} + 64 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + x^{4} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{6} + 5\nu^{2} ) / 12 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{7} - 4\nu^{5} + 7\nu^{3} + 4\nu ) / 24 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -\nu^{7} + 4\nu^{5} + 7\nu^{3} - 4\nu ) / 24 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -3\nu^{6} + 8\nu^{4} + 9\nu^{2} + 4 ) / 12 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -3\nu^{6} - 8\nu^{4} + 9\nu^{2} - 4 ) / 12 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 5\nu^{7} - 4\nu^{5} + 13\nu^{3} + 4\nu ) / 24 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{6} + \beta_{5} + 6\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( \beta_{7} + 3\beta_{4} + 2\beta_{3} ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -3\beta_{6} + 3\beta_{5} - 2 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 6\beta_{4} - 6\beta_{3} + \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -5\beta_{6} - 5\beta_{5} + 18\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 7\beta_{7} - 3\beta_{4} - 10\beta_{3} ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2304\mathbb{Z}\right)^\times\).

\(n\) \(1279\) \(1793\) \(2053\)
\(\chi(n)\) \(-1\) \(-1\) \(-\beta_{2}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
575.1
1.28897 0.581861i
0.581861 1.28897i
−0.581861 + 1.28897i
−1.28897 + 0.581861i
1.28897 + 0.581861i
0.581861 + 1.28897i
−0.581861 1.28897i
−1.28897 0.581861i
0 0 0 −2.57794 + 2.57794i 0 −3.74166 0 0 0
575.2 0 0 0 −1.16372 + 1.16372i 0 −3.74166 0 0 0
575.3 0 0 0 1.16372 1.16372i 0 3.74166 0 0 0
575.4 0 0 0 2.57794 2.57794i 0 3.74166 0 0 0
1727.1 0 0 0 −2.57794 2.57794i 0 −3.74166 0 0 0
1727.2 0 0 0 −1.16372 1.16372i 0 −3.74166 0 0 0
1727.3 0 0 0 1.16372 + 1.16372i 0 3.74166 0 0 0
1727.4 0 0 0 2.57794 + 2.57794i 0 3.74166 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 575.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
12.b even 2 1 inner
16.e even 4 1 inner
48.k even 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2304.2.l.a 8
3.b odd 2 1 2304.2.l.e yes 8
4.b odd 2 1 2304.2.l.e yes 8
8.b even 2 1 2304.2.l.h yes 8
8.d odd 2 1 2304.2.l.d yes 8
12.b even 2 1 inner 2304.2.l.a 8
16.e even 4 1 inner 2304.2.l.a 8
16.e even 4 1 2304.2.l.h yes 8
16.f odd 4 1 2304.2.l.d yes 8
16.f odd 4 1 2304.2.l.e yes 8
24.f even 2 1 2304.2.l.h yes 8
24.h odd 2 1 2304.2.l.d yes 8
48.i odd 4 1 2304.2.l.d yes 8
48.i odd 4 1 2304.2.l.e yes 8
48.k even 4 1 inner 2304.2.l.a 8
48.k even 4 1 2304.2.l.h yes 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2304.2.l.a 8 1.a even 1 1 trivial
2304.2.l.a 8 12.b even 2 1 inner
2304.2.l.a 8 16.e even 4 1 inner
2304.2.l.a 8 48.k even 4 1 inner
2304.2.l.d yes 8 8.d odd 2 1
2304.2.l.d yes 8 16.f odd 4 1
2304.2.l.d yes 8 24.h odd 2 1
2304.2.l.d yes 8 48.i odd 4 1
2304.2.l.e yes 8 3.b odd 2 1
2304.2.l.e yes 8 4.b odd 2 1
2304.2.l.e yes 8 16.f odd 4 1
2304.2.l.e yes 8 48.i odd 4 1
2304.2.l.h yes 8 8.b even 2 1
2304.2.l.h yes 8 16.e even 4 1
2304.2.l.h yes 8 24.f even 2 1
2304.2.l.h yes 8 48.k even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2304, [\chi])\):

\( T_{5}^{8} + 184T_{5}^{4} + 1296 \) Copy content Toggle raw display
\( T_{11}^{4} + 4T_{11}^{3} + 8T_{11}^{2} - 48T_{11} + 144 \) Copy content Toggle raw display
\( T_{13}^{4} + 8T_{13}^{3} + 32T_{13}^{2} - 48T_{13} + 36 \) Copy content Toggle raw display
\( T_{37}^{2} + 2T_{37} + 2 \) 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
$5$ \( T^{8} + 184T^{4} + 1296 \) Copy content Toggle raw display
$7$ \( (T^{2} - 14)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} + 4 T^{3} + \cdots + 144)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 8 T^{3} + 32 T^{2} + \cdots + 36)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 44 T^{2} + 36)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 16)^{2} \) Copy content Toggle raw display
$23$ \( (T^{2} + 36)^{4} \) Copy content Toggle raw display
$29$ \( T^{8} + 3448 T^{4} + 104976 \) Copy content Toggle raw display
$31$ \( (T^{4} + 44 T^{2} + 36)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 2 T + 2)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} - 44 T^{2} + 36)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 784)^{2} \) Copy content Toggle raw display
$47$ \( (T - 6)^{8} \) Copy content Toggle raw display
$53$ \( T^{8} + 14904 T^{4} + 8503056 \) Copy content Toggle raw display
$59$ \( (T^{4} + 16 T^{3} + \cdots + 576)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 20 T^{3} + \cdots + 36)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} + 55168 T^{4} + 26873856 \) Copy content Toggle raw display
$71$ \( (T^{4} + 184 T^{2} + 1296)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 232 T^{2} + 11664)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} + 268 T^{2} + 13924)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} - 12 T^{3} + \cdots + 11664)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 212 T^{2} + 36)^{2} \) Copy content Toggle raw display
$97$ \( (T^{2} - 16 T + 36)^{4} \) Copy content Toggle raw display
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