Properties

Label 1960.2.g.d
Level $1960$
Weight $2$
Character orbit 1960.g
Analytic conductor $15.651$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1960,2,Mod(1569,1960)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1960, 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("1960.1569");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1960 = 2^{3} \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1960.g (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: \(15.6506787962\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.11574317056.3
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 45x^{4} + 4 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{6} \)
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.

\(f(q)\) \(=\) \( q + \beta_{5} q^{3} - \beta_{6} q^{5} - \beta_{2} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{5} q^{3} - \beta_{6} q^{5} - \beta_{2} q^{9} + (\beta_{2} + 1) q^{11} - \beta_{5} q^{13} + (\beta_{3} + \beta_1 + 1) q^{15} + ( - \beta_{6} + \beta_{5} + \beta_{4}) q^{17} + (\beta_{7} + \beta_{4}) q^{19} + (\beta_{3} + 2 \beta_1) q^{23} + (\beta_{2} - \beta_1 + 1) q^{25} + (\beta_{6} - \beta_{5} - \beta_{4}) q^{27} + (\beta_{2} + 3) q^{29} + (\beta_{7} - \beta_{6}) q^{31} + ( - \beta_{6} + 5 \beta_{5} + \beta_{4}) q^{33} + ( - \beta_{3} - 2 \beta_1) q^{37} + (\beta_{2} + 3) q^{39} + ( - \beta_{7} + \beta_{6}) q^{41} + \beta_{3} q^{43} + (\beta_{7} - \beta_{6} + \cdots + 3 \beta_{4}) q^{45}+ \cdots + ( - 2 \beta_{2} - 10) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 4 q^{9} + 12 q^{11} + 8 q^{15} + 12 q^{25} + 28 q^{29} + 28 q^{39} - 12 q^{51} - 8 q^{65} + 8 q^{71} - 12 q^{79} - 20 q^{85} - 28 q^{95} - 88 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 45x^{4} + 4 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{6} + 40\nu^{2} ) / 7 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{4} + 26 ) / 7 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 2\nu^{6} + 94\nu^{2} ) / 7 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -5\nu^{7} + 2\nu^{5} - 221\nu^{3} + 94\nu ) / 28 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -7\nu^{7} - 2\nu^{5} - 315\nu^{3} - 94\nu ) / 28 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -7\nu^{7} + 2\nu^{5} - 315\nu^{3} + 66\nu ) / 28 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -11\nu^{7} + 2\nu^{5} - 503\nu^{3} + 122\nu ) / 28 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} - 3\beta_{6} + 2\beta_{4} ) / 4 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} - 2\beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -3\beta_{7} - 3\beta_{6} + 2\beta_{5} + 8\beta_{4} ) / 2 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 7\beta_{2} - 26 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( -10\beta_{7} + 37\beta_{6} - 7\beta_{5} - 20\beta_{4} \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -20\beta_{3} + 47\beta_1 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 67\beta_{7} + 67\beta_{6} - 47\beta_{5} - 181\beta_{4} \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1960\mathbb{Z}\right)^\times\).

\(n\) \(981\) \(1081\) \(1177\) \(1471\)
\(\chi(n)\) \(1\) \(1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1569.1
0.386289 + 0.386289i
−0.386289 + 0.386289i
−1.83051 + 1.83051i
1.83051 + 1.83051i
−1.83051 1.83051i
1.83051 1.83051i
0.386289 0.386289i
−0.386289 0.386289i
0 2.58874i 0 −2.20245 + 0.386289i 0 0 0 −3.70156 0
1569.2 0 2.58874i 0 2.20245 + 0.386289i 0 0 0 −3.70156 0
1569.3 0 0.546295i 0 −1.28422 + 1.83051i 0 0 0 2.70156 0
1569.4 0 0.546295i 0 1.28422 + 1.83051i 0 0 0 2.70156 0
1569.5 0 0.546295i 0 −1.28422 1.83051i 0 0 0 2.70156 0
1569.6 0 0.546295i 0 1.28422 1.83051i 0 0 0 2.70156 0
1569.7 0 2.58874i 0 −2.20245 0.386289i 0 0 0 −3.70156 0
1569.8 0 2.58874i 0 2.20245 0.386289i 0 0 0 −3.70156 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1569.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
5.b even 2 1 inner
7.b odd 2 1 inner
35.c odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1960.2.g.d 8
5.b even 2 1 inner 1960.2.g.d 8
5.c odd 4 1 9800.2.a.co 4
5.c odd 4 1 9800.2.a.cp 4
7.b odd 2 1 inner 1960.2.g.d 8
35.c odd 2 1 inner 1960.2.g.d 8
35.f even 4 1 9800.2.a.co 4
35.f even 4 1 9800.2.a.cp 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1960.2.g.d 8 1.a even 1 1 trivial
1960.2.g.d 8 5.b even 2 1 inner
1960.2.g.d 8 7.b odd 2 1 inner
1960.2.g.d 8 35.c odd 2 1 inner
9800.2.a.co 4 5.c odd 4 1
9800.2.a.co 4 35.f even 4 1
9800.2.a.cp 4 5.c odd 4 1
9800.2.a.cp 4 35.f even 4 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1960, [\chi])\):

\( T_{3}^{4} + 7T_{3}^{2} + 2 \) Copy content Toggle raw display
\( T_{19}^{4} - 58T_{19}^{2} + 800 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} + 7 T^{2} + 2)^{2} \) Copy content Toggle raw display
$5$ \( T^{8} - 6 T^{6} + \cdots + 625 \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( (T^{2} - 3 T - 8)^{4} \) Copy content Toggle raw display
$13$ \( (T^{4} + 7 T^{2} + 2)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 13 T^{2} + 32)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} - 58 T^{2} + 800)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} + 84 T^{2} + 1600)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} - 7 T + 2)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} - 56 T^{2} + 128)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 84 T^{2} + 1600)^{2} \) Copy content Toggle raw display
$41$ \( (T^{4} - 56 T^{2} + 128)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 16)^{4} \) Copy content Toggle raw display
$47$ \( (T^{4} + 181 T^{2} + 7688)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 132 T^{2} + 256)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 234 T^{2} + 10368)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} - 106 T^{2} + 800)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} + 64)^{4} \) Copy content Toggle raw display
$71$ \( (T^{2} - 2 T - 40)^{4} \) Copy content Toggle raw display
$73$ \( (T^{4} + 284 T^{2} + 20000)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 3 T - 90)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} + 106 T^{2} + 800)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} - 464 T^{2} + 51200)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 101 T^{2} + 2048)^{2} \) Copy content Toggle raw display
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