Properties

Label 1260.2.k.e
Level $1260$
Weight $2$
Character orbit 1260.k
Analytic conductor $10.061$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1260,2,Mod(1009,1260)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1260, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 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("1260.1009");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1260 = 2^{2} \cdot 3^{2} \cdot 5 \cdot 7 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1260.k (of order \(2\), degree \(1\), 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: \(10.0611506547\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.49787136.1
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{8} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-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 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.

\(f(q)\) \(=\) \( q - \beta_{7} q^{5} - \beta_1 q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{7} q^{5} - \beta_1 q^{7} + (\beta_{7} + \beta_{5} + \cdots + \beta_{3}) q^{11}+ \cdots + ( - \beta_{2} - 9 \beta_1) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 8 q^{19} + 8 q^{31} - 8 q^{49} - 24 q^{55} - 16 q^{79} + 8 q^{85} + 8 q^{91}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 3x^{6} + 5x^{4} + 12x^{2} + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -3\nu^{7} - 5\nu^{5} + 5\nu^{3} - 16\nu ) / 40 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 7\nu^{7} + 25\nu^{5} + 55\nu^{3} + 184\nu ) / 40 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -5\nu^{7} + 14\nu^{6} - 15\nu^{5} + 10\nu^{4} - 25\nu^{3} + 30\nu^{2} - 20\nu + 88 ) / 40 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 5\nu^{7} - \nu^{6} + 5\nu^{5} + 5\nu^{4} + 15\nu^{3} + 15\nu^{2} + 30\nu + 8 ) / 20 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 5\nu^{7} + \nu^{6} + 5\nu^{5} - 5\nu^{4} + 15\nu^{3} - 15\nu^{2} + 30\nu - 8 ) / 20 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( \nu^{6} + 3\nu^{4} + \nu^{2} + 6 ) / 2 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -5\nu^{7} - 14\nu^{6} - 15\nu^{5} - 10\nu^{4} - 25\nu^{3} - 30\nu^{2} - 20\nu - 88 ) / 40 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + \beta_{3} + \beta_{2} - \beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{7} - \beta_{6} - 2\beta_{5} + 2\beta_{4} + \beta_{3} - 3 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -\beta_{7} + \beta_{5} + \beta_{4} - \beta_{3} + 10\beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 2\beta_{7} + 3\beta_{6} - \beta_{5} + \beta_{4} - 2\beta_{3} - 1 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -6\beta_{7} - 5\beta_{5} - 5\beta_{4} - 6\beta_{3} + \beta_{2} - 11\beta_1 ) / 4 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -5\beta_{7} + 5\beta_{5} - 5\beta_{4} + 5\beta_{3} - 18 ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 3\beta_{7} + 10\beta_{5} + 10\beta_{4} + 3\beta_{3} - 7\beta_{2} - 13\beta_1 ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1260\mathbb{Z}\right)^\times\).

\(n\) \(281\) \(631\) \(757\) \(1081\)
\(\chi(n)\) \(1\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1009.1
1.09445 + 0.895644i
1.09445 0.895644i
0.228425 1.39564i
0.228425 + 1.39564i
−0.228425 + 1.39564i
−0.228425 1.39564i
−1.09445 0.895644i
−1.09445 + 0.895644i
0 0 0 −2.18890 0.456850i 0 1.00000i 0 0 0
1009.2 0 0 0 −2.18890 + 0.456850i 0 1.00000i 0 0 0
1009.3 0 0 0 −0.456850 2.18890i 0 1.00000i 0 0 0
1009.4 0 0 0 −0.456850 + 2.18890i 0 1.00000i 0 0 0
1009.5 0 0 0 0.456850 2.18890i 0 1.00000i 0 0 0
1009.6 0 0 0 0.456850 + 2.18890i 0 1.00000i 0 0 0
1009.7 0 0 0 2.18890 0.456850i 0 1.00000i 0 0 0
1009.8 0 0 0 2.18890 + 0.456850i 0 1.00000i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1009.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
5.b even 2 1 inner
15.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1260.2.k.e 8
3.b odd 2 1 inner 1260.2.k.e 8
4.b odd 2 1 5040.2.t.bb 8
5.b even 2 1 inner 1260.2.k.e 8
5.c odd 4 1 6300.2.a.bk 4
5.c odd 4 1 6300.2.a.bl 4
12.b even 2 1 5040.2.t.bb 8
15.d odd 2 1 inner 1260.2.k.e 8
15.e even 4 1 6300.2.a.bk 4
15.e even 4 1 6300.2.a.bl 4
20.d odd 2 1 5040.2.t.bb 8
60.h even 2 1 5040.2.t.bb 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1260.2.k.e 8 1.a even 1 1 trivial
1260.2.k.e 8 3.b odd 2 1 inner
1260.2.k.e 8 5.b even 2 1 inner
1260.2.k.e 8 15.d odd 2 1 inner
5040.2.t.bb 8 4.b odd 2 1
5040.2.t.bb 8 12.b even 2 1
5040.2.t.bb 8 20.d odd 2 1
5040.2.t.bb 8 60.h even 2 1
6300.2.a.bk 4 5.c odd 4 1
6300.2.a.bk 4 15.e even 4 1
6300.2.a.bl 4 5.c odd 4 1
6300.2.a.bl 4 15.e even 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{11}^{2} - 12 \) acting on \(S_{2}^{\mathrm{new}}(1260, [\chi])\). 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
$5$ \( T^{8} - 34T^{4} + 625 \) Copy content Toggle raw display
$7$ \( (T^{2} + 1)^{4} \) Copy content Toggle raw display
$11$ \( (T^{2} - 12)^{4} \) Copy content Toggle raw display
$13$ \( (T^{4} + 44 T^{2} + 400)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 68 T^{2} + 400)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} + 2 T - 20)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 20 T^{2} + 16)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} - 80 T^{2} + 256)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 2 T - 20)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} + 16)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} - 132 T^{2} + 3600)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} + 176 T^{2} + 6400)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 80 T^{2} + 256)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 132 T^{2} + 3600)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 80 T^{2} + 256)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} - 84)^{4} \) Copy content Toggle raw display
$67$ \( (T^{2} + 64)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} - 12)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} + 44 T^{2} + 400)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 4 T - 80)^{4} \) Copy content Toggle raw display
$83$ \( (T^{2} + 48)^{4} \) Copy content Toggle raw display
$89$ \( (T^{4} - 500 T^{2} + 55696)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 204 T^{2} + 3600)^{2} \) Copy content Toggle raw display
show more
show less