Properties

Label 8640.2.a.bf
Level $8640$
Weight $2$
Character orbit 8640.a
Self dual yes
Analytic conductor $68.991$
Analytic rank $1$
Dimension $1$
CM no
Inner twists $1$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [8640,2,Mod(1,8640)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(8640, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("8640.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 8640 = 2^{6} \cdot 3^{3} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 8640.a (trivial)

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: yes
Analytic conductor: \(68.9907473464\)
Analytic rank: \(1\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 1080)
Fricke sign: \(+1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 
\(f(q)\) \(=\) \( q + q^{5} - 4 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + q^{5} - 4 q^{7} - 2 q^{11} - 4 q^{13} + q^{17} + 5 q^{19} + 5 q^{23} + q^{25} - 8 q^{29} + 7 q^{31} - 4 q^{35} + 6 q^{37} + 6 q^{41} + 2 q^{43} + 8 q^{47} + 9 q^{49} - 9 q^{53} - 2 q^{55} - 4 q^{59} - 13 q^{61} - 4 q^{65} + 10 q^{67} - 6 q^{71} - 6 q^{73} + 8 q^{77} + 9 q^{79} + 17 q^{83} + q^{85} - 6 q^{89} + 16 q^{91} + 5 q^{95} - 8 q^{97}+O(q^{100}) \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0
0 0 0 1.00000 0 −4.00000 0 0 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( +1 \)
\(3\) \( -1 \)
\(5\) \( -1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 8640.2.a.bf 1
3.b odd 2 1 8640.2.a.a 1
4.b odd 2 1 8640.2.a.cg 1
8.b even 2 1 1080.2.a.a 1
8.d odd 2 1 2160.2.a.l 1
12.b even 2 1 8640.2.a.bd 1
24.f even 2 1 2160.2.a.w 1
24.h odd 2 1 1080.2.a.g yes 1
40.f even 2 1 5400.2.a.bu 1
40.i odd 4 2 5400.2.f.s 2
72.j odd 6 2 3240.2.q.l 2
72.n even 6 2 3240.2.q.w 2
120.i odd 2 1 5400.2.a.br 1
120.w even 4 2 5400.2.f.l 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1080.2.a.a 1 8.b even 2 1
1080.2.a.g yes 1 24.h odd 2 1
2160.2.a.l 1 8.d odd 2 1
2160.2.a.w 1 24.f even 2 1
3240.2.q.l 2 72.j odd 6 2
3240.2.q.w 2 72.n even 6 2
5400.2.a.br 1 120.i odd 2 1
5400.2.a.bu 1 40.f even 2 1
5400.2.f.l 2 120.w even 4 2
5400.2.f.s 2 40.i odd 4 2
8640.2.a.a 1 3.b odd 2 1
8640.2.a.bd 1 12.b even 2 1
8640.2.a.bf 1 1.a even 1 1 trivial
8640.2.a.cg 1 4.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(8640))\):

\( T_{7} + 4 \) Copy content Toggle raw display
\( T_{11} + 2 \) Copy content Toggle raw display
\( T_{13} + 4 \) Copy content Toggle raw display
\( T_{17} - 1 \) Copy content Toggle raw display
\( T_{19} - 5 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T \) Copy content Toggle raw display
$5$ \( T - 1 \) Copy content Toggle raw display
$7$ \( T + 4 \) Copy content Toggle raw display
$11$ \( T + 2 \) Copy content Toggle raw display
$13$ \( T + 4 \) Copy content Toggle raw display
$17$ \( T - 1 \) Copy content Toggle raw display
$19$ \( T - 5 \) Copy content Toggle raw display
$23$ \( T - 5 \) Copy content Toggle raw display
$29$ \( T + 8 \) Copy content Toggle raw display
$31$ \( T - 7 \) Copy content Toggle raw display
$37$ \( T - 6 \) Copy content Toggle raw display
$41$ \( T - 6 \) Copy content Toggle raw display
$43$ \( T - 2 \) Copy content Toggle raw display
$47$ \( T - 8 \) Copy content Toggle raw display
$53$ \( T + 9 \) Copy content Toggle raw display
$59$ \( T + 4 \) Copy content Toggle raw display
$61$ \( T + 13 \) Copy content Toggle raw display
$67$ \( T - 10 \) Copy content Toggle raw display
$71$ \( T + 6 \) Copy content Toggle raw display
$73$ \( T + 6 \) Copy content Toggle raw display
$79$ \( T - 9 \) Copy content Toggle raw display
$83$ \( T - 17 \) Copy content Toggle raw display
$89$ \( T + 6 \) Copy content Toggle raw display
$97$ \( T + 8 \) Copy content Toggle raw display
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