Properties

Label 2160.2.x.e
Level $2160$
Weight $2$
Character orbit 2160.x
Analytic conductor $17.248$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2160,2,Mod(703,2160)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2160, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 0, 0, 3]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2160.703");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2160 = 2^{4} \cdot 3^{3} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2160.x (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: \(17.2476868366\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(8\) over \(\Q(i)\)
Coefficient field: 16.0.68719476736000000000000.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} + 175x^{8} + 625 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{8}\cdot 3^{4} \)
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 \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{3} q^{5} + (\beta_{7} - \beta_{6} - \beta_{2}) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{3} q^{5} + (\beta_{7} - \beta_{6} - \beta_{2}) q^{7} + \beta_{13} q^{11} + (\beta_{5} - \beta_1 - 1) q^{13} + ( - \beta_{12} + \beta_{10} + \cdots + \beta_{3}) q^{17}+ \cdots + (\beta_{8} - \beta_1 + 1) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q+O(q^{10}) \) Copy content Toggle raw display \( 16 q - 16 q^{13} - 16 q^{37} - 16 q^{61} - 32 q^{73} + 80 q^{85} + 16 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} + 175x^{8} + 625 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{12} + 200\nu^{4} ) / 375 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{10} - 275\nu^{2} ) / 125 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{13} - 5\nu^{9} + 200\nu^{5} - 625\nu ) / 375 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 2\nu^{13} + 325\nu^{5} + 375\nu ) / 375 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{10} - 125\nu^{2} ) / 75 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 4\nu^{14} - 15\nu^{12} + 5\nu^{10} + 725\nu^{6} - 2250\nu^{4} + 1375\nu^{2} ) / 1875 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 4\nu^{14} - 5\nu^{10} + 50\nu^{8} + 725\nu^{6} - 1375\nu^{2} + 4375 ) / 1875 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -2\nu^{14} - 325\nu^{6} ) / 375 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( -4\nu^{15} - 10\nu^{13} + 15\nu^{11} - 725\nu^{7} - 1625\nu^{5} + 2250\nu^{3} + 1875\nu ) / 1875 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( 4\nu^{15} + 15\nu^{11} + 725\nu^{7} + 2250\nu^{3} ) / 1875 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -4\nu^{14} - 725\nu^{6} ) / 625 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( -7\nu^{15} + 5\nu^{11} - 1175\nu^{7} + 1375\nu^{3} ) / 1875 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( -7\nu^{15} - 5\nu^{13} - 5\nu^{11} - 25\nu^{9} - 1175\nu^{7} - 1000\nu^{5} - 1375\nu^{3} - 3125\nu ) / 1875 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( 4\nu^{15} - 20\nu^{13} - 15\nu^{11} + 725\nu^{7} - 3250\nu^{5} - 2250\nu^{3} + 3750\nu ) / 1875 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( -7\nu^{15} + 10\nu^{13} - 5\nu^{11} + 50\nu^{9} - 1175\nu^{7} + 2000\nu^{5} - 1375\nu^{3} + 6250\nu ) / 1875 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{14} + \beta_{9} + 3\beta_{4} ) / 6 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 3\beta_{5} - 5\beta_{2} ) / 6 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -3\beta_{15} + \beta_{14} - 6\beta_{13} + 9\beta_{12} - 3\beta_{10} - 2\beta_{9} ) / 6 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 5\beta_{11} + 15\beta_{6} + 5\beta_{2} + 45\beta_1 ) / 6 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 10\beta_{15} + 5\beta_{14} - 10\beta_{13} + 5\beta_{9} - 15\beta_{4} + 30\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -25\beta_{11} + 30\beta_{8} ) / 3 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 20\beta_{15} + 35\beta_{14} + 40\beta_{13} + 60\beta_{12} + 105\beta_{10} - 70\beta_{9} ) / 6 \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( ( 25\beta_{11} + 75\beta_{7} - 25\beta_{2} - 175 ) / 2 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( ( 75\beta_{15} - 125\beta_{14} - 75\beta_{13} - 125\beta_{9} - 375\beta_{4} - 225\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( ( -825\beta_{5} + 625\beta_{2} ) / 6 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( ( 450\beta_{15} - 275\beta_{14} + 900\beta_{13} - 1350\beta_{12} + 825\beta_{10} + 550\beta_{9} ) / 6 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( ( -500\beta_{11} - 1500\beta_{6} - 500\beta_{2} - 3375\beta_1 ) / 3 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( ( -1625\beta_{15} - 1000\beta_{14} + 1625\beta_{13} - 1000\beta_{9} + 3000\beta_{4} - 4875\beta_{3} ) / 6 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( ( 8125\beta_{11} - 10875\beta_{8} ) / 6 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( ( -3625\beta_{15} - 5875\beta_{14} - 7250\beta_{13} - 10875\beta_{12} - 17625\beta_{10} + 11750\beta_{9} ) / 6 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2160\mathbb{Z}\right)^\times\).

\(n\) \(271\) \(1297\) \(1621\) \(2081\)
\(\chi(n)\) \(-1\) \(-\beta_{1}\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
703.1
−0.727907 + 1.75732i
1.08609 + 0.449871i
−1.75732 0.727907i
−0.449871 + 1.08609i
1.75732 + 0.727907i
0.449871 1.08609i
0.727907 1.75732i
−1.08609 0.449871i
−0.727907 1.75732i
1.08609 0.449871i
−1.75732 + 0.727907i
−0.449871 1.08609i
1.75732 0.727907i
0.449871 + 1.08609i
0.727907 + 1.75732i
−1.08609 + 0.449871i
0 0 0 −2.20719 + 0.358178i 0 −2.94317 2.94317i 0 0 0
703.2 0 0 0 −2.20719 + 0.358178i 0 2.94317 + 2.94317i 0 0 0
703.3 0 0 0 −0.358178 2.20719i 0 −1.52896 1.52896i 0 0 0
703.4 0 0 0 −0.358178 2.20719i 0 1.52896 + 1.52896i 0 0 0
703.5 0 0 0 0.358178 + 2.20719i 0 −1.52896 1.52896i 0 0 0
703.6 0 0 0 0.358178 + 2.20719i 0 1.52896 + 1.52896i 0 0 0
703.7 0 0 0 2.20719 0.358178i 0 −2.94317 2.94317i 0 0 0
703.8 0 0 0 2.20719 0.358178i 0 2.94317 + 2.94317i 0 0 0
1567.1 0 0 0 −2.20719 0.358178i 0 −2.94317 + 2.94317i 0 0 0
1567.2 0 0 0 −2.20719 0.358178i 0 2.94317 2.94317i 0 0 0
1567.3 0 0 0 −0.358178 + 2.20719i 0 −1.52896 + 1.52896i 0 0 0
1567.4 0 0 0 −0.358178 + 2.20719i 0 1.52896 1.52896i 0 0 0
1567.5 0 0 0 0.358178 2.20719i 0 −1.52896 + 1.52896i 0 0 0
1567.6 0 0 0 0.358178 2.20719i 0 1.52896 1.52896i 0 0 0
1567.7 0 0 0 2.20719 + 0.358178i 0 −2.94317 + 2.94317i 0 0 0
1567.8 0 0 0 2.20719 + 0.358178i 0 2.94317 2.94317i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 703.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
4.b odd 2 1 inner
5.c odd 4 1 inner
12.b even 2 1 inner
15.e even 4 1 inner
20.e even 4 1 inner
60.l odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2160.2.x.e 16
3.b odd 2 1 inner 2160.2.x.e 16
4.b odd 2 1 inner 2160.2.x.e 16
5.c odd 4 1 inner 2160.2.x.e 16
12.b even 2 1 inner 2160.2.x.e 16
15.e even 4 1 inner 2160.2.x.e 16
20.e even 4 1 inner 2160.2.x.e 16
60.l odd 4 1 inner 2160.2.x.e 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2160.2.x.e 16 1.a even 1 1 trivial
2160.2.x.e 16 3.b odd 2 1 inner
2160.2.x.e 16 4.b odd 2 1 inner
2160.2.x.e 16 5.c odd 4 1 inner
2160.2.x.e 16 12.b even 2 1 inner
2160.2.x.e 16 15.e even 4 1 inner
2160.2.x.e 16 20.e even 4 1 inner
2160.2.x.e 16 60.l odd 4 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2160, [\chi])\):

\( T_{7}^{8} + 322T_{7}^{4} + 6561 \) Copy content Toggle raw display
\( T_{17}^{8} + 1520T_{17}^{4} + 1600 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} \) Copy content Toggle raw display
$5$ \( (T^{8} - 40 T^{4} + 625)^{2} \) Copy content Toggle raw display
$7$ \( (T^{8} + 322 T^{4} + 6561)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + 20 T^{2} + 90)^{4} \) Copy content Toggle raw display
$13$ \( (T^{4} + 4 T^{3} + 8 T^{2} + \cdots + 9)^{4} \) Copy content Toggle raw display
$17$ \( (T^{8} + 1520 T^{4} + 1600)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 14 T^{2} + 9)^{4} \) Copy content Toggle raw display
$23$ \( (T^{8} + 5500 T^{4} + 5062500)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + 20 T^{2} + 10)^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} + 18)^{8} \) Copy content Toggle raw display
$37$ \( (T^{4} + 4 T^{3} + \cdots + 1849)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} - 100 T^{2} + 810)^{4} \) Copy content Toggle raw display
$43$ \( (T^{8} + 712 T^{4} + 1296)^{2} \) Copy content Toggle raw display
$47$ \( (T^{8} + 14080 T^{4} + 33177600)^{2} \) Copy content Toggle raw display
$53$ \( (T^{8} + 6620 T^{4} + 2856100)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 200 T^{2} + 9000)^{4} \) Copy content Toggle raw display
$61$ \( (T^{2} + 2 T - 39)^{8} \) Copy content Toggle raw display
$67$ \( (T^{8} + 4450 T^{4} + 50625)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + 260 T^{2} + 90)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} + 8 T^{3} + \cdots + 13689)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} - 314 T^{2} + 8649)^{4} \) Copy content Toggle raw display
$83$ \( (T^{8} + 85180 T^{4} + 231344100)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 200 T^{2} + 1000)^{4} \) Copy content Toggle raw display
$97$ \( (T^{4} - 4 T^{3} + 8 T^{2} + \cdots + 9)^{4} \) Copy content Toggle raw display
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