Properties

Label 2304.2.d.l
Level $2304$
Weight $2$
Character orbit 2304.d
Analytic conductor $18.398$
Analytic rank $0$
Dimension $2$
CM discriminant -4
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(1153,2304)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2304, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2304.1153");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2304 = 2^{8} \cdot 3^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2304.d (of order \(2\), degree \(1\), not 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: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2 \)
Twist minimal: no (minimal twist has level 288)
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-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 \(\beta = 2i\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + 2 \beta q^{5}+O(q^{10}) \) Copy content Toggle raw display \( q + 2 \beta q^{5} + 3 \beta q^{13} + 8 q^{17} - 11 q^{25} + 2 \beta q^{29} - \beta q^{37} + 8 q^{41} - 7 q^{49} - 2 \beta q^{53} + 5 \beta q^{61} - 24 q^{65} - 6 q^{73} + 16 \beta q^{85} - 16 q^{89} - 18 q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q+O(q^{10}) \) Copy content Toggle raw display \( 2 q + 16 q^{17} - 22 q^{25} + 16 q^{41} - 14 q^{49} - 48 q^{65} - 12 q^{73} - 32 q^{89} - 36 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

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

\(n\) \(1279\) \(1793\) \(2053\)
\(\chi(n)\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1153.1
1.00000i
1.00000i
0 0 0 4.00000i 0 0 0 0 0
1153.2 0 0 0 4.00000i 0 0 0 0 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 CM by \(\Q(\sqrt{-1}) \)
8.b even 2 1 inner
8.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2304.2.d.l 2
3.b odd 2 1 2304.2.d.h 2
4.b odd 2 1 CM 2304.2.d.l 2
8.b even 2 1 inner 2304.2.d.l 2
8.d odd 2 1 inner 2304.2.d.l 2
12.b even 2 1 2304.2.d.h 2
16.e even 4 1 288.2.a.e yes 1
16.e even 4 1 576.2.a.a 1
16.f odd 4 1 288.2.a.e yes 1
16.f odd 4 1 576.2.a.a 1
24.f even 2 1 2304.2.d.h 2
24.h odd 2 1 2304.2.d.h 2
48.i odd 4 1 288.2.a.a 1
48.i odd 4 1 576.2.a.i 1
48.k even 4 1 288.2.a.a 1
48.k even 4 1 576.2.a.i 1
80.i odd 4 1 7200.2.f.q 2
80.j even 4 1 7200.2.f.q 2
80.k odd 4 1 7200.2.a.be 1
80.q even 4 1 7200.2.a.be 1
80.s even 4 1 7200.2.f.q 2
80.t odd 4 1 7200.2.f.q 2
144.u even 12 2 2592.2.i.x 2
144.v odd 12 2 2592.2.i.a 2
144.w odd 12 2 2592.2.i.x 2
144.x even 12 2 2592.2.i.a 2
240.t even 4 1 7200.2.a.bf 1
240.z odd 4 1 7200.2.f.n 2
240.bb even 4 1 7200.2.f.n 2
240.bd odd 4 1 7200.2.f.n 2
240.bf even 4 1 7200.2.f.n 2
240.bm odd 4 1 7200.2.a.bf 1
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
288.2.a.a 1 48.i odd 4 1
288.2.a.a 1 48.k even 4 1
288.2.a.e yes 1 16.e even 4 1
288.2.a.e yes 1 16.f odd 4 1
576.2.a.a 1 16.e even 4 1
576.2.a.a 1 16.f odd 4 1
576.2.a.i 1 48.i odd 4 1
576.2.a.i 1 48.k even 4 1
2304.2.d.h 2 3.b odd 2 1
2304.2.d.h 2 12.b even 2 1
2304.2.d.h 2 24.f even 2 1
2304.2.d.h 2 24.h odd 2 1
2304.2.d.l 2 1.a even 1 1 trivial
2304.2.d.l 2 4.b odd 2 1 CM
2304.2.d.l 2 8.b even 2 1 inner
2304.2.d.l 2 8.d odd 2 1 inner
2592.2.i.a 2 144.v odd 12 2
2592.2.i.a 2 144.x even 12 2
2592.2.i.x 2 144.u even 12 2
2592.2.i.x 2 144.w odd 12 2
7200.2.a.be 1 80.k odd 4 1
7200.2.a.be 1 80.q even 4 1
7200.2.a.bf 1 240.t even 4 1
7200.2.a.bf 1 240.bm odd 4 1
7200.2.f.n 2 240.z odd 4 1
7200.2.f.n 2 240.bb even 4 1
7200.2.f.n 2 240.bd odd 4 1
7200.2.f.n 2 240.bf even 4 1
7200.2.f.q 2 80.i odd 4 1
7200.2.f.q 2 80.j even 4 1
7200.2.f.q 2 80.s even 4 1
7200.2.f.q 2 80.t odd 4 1

Hecke kernels

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

\( T_{5}^{2} + 16 \) Copy content Toggle raw display
\( T_{7} \) Copy content Toggle raw display
\( T_{11} \) Copy content Toggle raw display
\( T_{17} - 8 \) Copy content Toggle raw display
\( T_{23} \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} + 16 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 36 \) Copy content Toggle raw display
$17$ \( (T - 8)^{2} \) Copy content Toggle raw display
$19$ \( T^{2} \) Copy content Toggle raw display
$23$ \( T^{2} \) Copy content Toggle raw display
$29$ \( T^{2} + 16 \) Copy content Toggle raw display
$31$ \( T^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 4 \) Copy content Toggle raw display
$41$ \( (T - 8)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} \) Copy content Toggle raw display
$47$ \( T^{2} \) Copy content Toggle raw display
$53$ \( T^{2} + 16 \) Copy content Toggle raw display
$59$ \( T^{2} \) Copy content Toggle raw display
$61$ \( T^{2} + 100 \) Copy content Toggle raw display
$67$ \( T^{2} \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( (T + 6)^{2} \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( T^{2} \) Copy content Toggle raw display
$89$ \( (T + 16)^{2} \) Copy content Toggle raw display
$97$ \( (T + 18)^{2} \) Copy content Toggle raw display
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