Properties

Label 864.2.a.f
Level $864$
Weight $2$
Character orbit 864.a
Self dual yes
Analytic conductor $6.899$
Analytic rank $0$
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] = [864,2,Mod(1,864)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(864, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([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("864.1");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 864 = 2^{5} \cdot 3^{3} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 864.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: \(6.89907473464\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
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)
 
\(f(q)\) \(=\) \( q - q^{5} + 3 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q - q^{5} + 3 q^{7} - 3 q^{11} + 4 q^{17} + 6 q^{19} + 6 q^{23} - 4 q^{25} - 2 q^{29} + 9 q^{31} - 3 q^{35} - 2 q^{37} - 10 q^{41} + 6 q^{43} + 6 q^{47} + 2 q^{49} + 13 q^{53} + 3 q^{55} - 12 q^{59} + 8 q^{61} + 6 q^{67} + 12 q^{71} + 9 q^{73} - 9 q^{77} - 3 q^{83} - 4 q^{85} + 14 q^{89} - 6 q^{95} - 9 q^{97}+O(q^{100}) \) 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 3.00000 0 0 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

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

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 864.2.a.f yes 1
3.b odd 2 1 864.2.a.h yes 1
4.b odd 2 1 864.2.a.e 1
8.b even 2 1 1728.2.a.t 1
8.d odd 2 1 1728.2.a.q 1
9.c even 3 2 2592.2.i.m 2
9.d odd 6 2 2592.2.i.i 2
12.b even 2 1 864.2.a.g yes 1
24.f even 2 1 1728.2.a.j 1
24.h odd 2 1 1728.2.a.k 1
36.f odd 6 2 2592.2.i.p 2
36.h even 6 2 2592.2.i.l 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
864.2.a.e 1 4.b odd 2 1
864.2.a.f yes 1 1.a even 1 1 trivial
864.2.a.g yes 1 12.b even 2 1
864.2.a.h yes 1 3.b odd 2 1
1728.2.a.j 1 24.f even 2 1
1728.2.a.k 1 24.h odd 2 1
1728.2.a.q 1 8.d odd 2 1
1728.2.a.t 1 8.b even 2 1
2592.2.i.i 2 9.d odd 6 2
2592.2.i.l 2 36.h even 6 2
2592.2.i.m 2 9.c even 3 2
2592.2.i.p 2 36.f odd 6 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(864))\):

\( T_{5} + 1 \) Copy content Toggle raw display
\( T_{7} - 3 \) Copy content Toggle raw display
\( T_{11} + 3 \) 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
$7$ \( T - 3 \) Copy content Toggle raw display
$11$ \( T + 3 \) Copy content Toggle raw display
$13$ \( T \) Copy content Toggle raw display
$17$ \( T - 4 \) Copy content Toggle raw display
$19$ \( T - 6 \) Copy content Toggle raw display
$23$ \( T - 6 \) Copy content Toggle raw display
$29$ \( T + 2 \) Copy content Toggle raw display
$31$ \( T - 9 \) Copy content Toggle raw display
$37$ \( T + 2 \) Copy content Toggle raw display
$41$ \( T + 10 \) Copy content Toggle raw display
$43$ \( T - 6 \) Copy content Toggle raw display
$47$ \( T - 6 \) Copy content Toggle raw display
$53$ \( T - 13 \) Copy content Toggle raw display
$59$ \( T + 12 \) Copy content Toggle raw display
$61$ \( T - 8 \) Copy content Toggle raw display
$67$ \( T - 6 \) Copy content Toggle raw display
$71$ \( T - 12 \) Copy content Toggle raw display
$73$ \( T - 9 \) Copy content Toggle raw display
$79$ \( T \) Copy content Toggle raw display
$83$ \( T + 3 \) Copy content Toggle raw display
$89$ \( T - 14 \) Copy content Toggle raw display
$97$ \( T + 9 \) Copy content Toggle raw display
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