Properties

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

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1960,2,Mod(361,1960)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1960, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 4]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1960.361");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1960 = 2^{3} \cdot 5 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1960.q (of order \(3\), degree \(2\), not 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: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\Q(\sqrt{-3}, \sqrt{-11})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} - 2x^{2} - 3x + 9 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 3 \)
Twist minimal: no (minimal twist has level 280)
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + \beta_{3} q^{3} + ( - \beta_1 + 1) q^{5} + (\beta_{3} - \beta_{2} + 5 \beta_1 - 6) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{3} q^{3} + ( - \beta_1 + 1) q^{5} + (\beta_{3} - \beta_{2} + 5 \beta_1 - 6) q^{9} + (\beta_{3} - 4 \beta_1) q^{11} + ( - \beta_{2} + 1) q^{13} + (\beta_{2} + 1) q^{15} + ( - \beta_{3} - 2 \beta_1) q^{17} + (2 \beta_{3} - 2 \beta_{2} - 2) q^{19} + (2 \beta_{3} - 2 \beta_{2} - 2) q^{23} - \beta_1 q^{25} + ( - 3 \beta_{2} - 11) q^{27} + (\beta_{2} - 1) q^{29} + 8 \beta_1 q^{31} + ( - 3 \beta_{3} + 3 \beta_{2} + \cdots - 5) q^{33}+ \cdots + ( - 2 \beta_{2} + 10) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + q^{3} + 2 q^{5} - 11 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + q^{3} + 2 q^{5} - 11 q^{9} - 7 q^{11} + 6 q^{13} + 2 q^{15} - 5 q^{17} - 2 q^{19} - 2 q^{23} - 2 q^{25} - 38 q^{27} - 6 q^{29} + 16 q^{31} - 13 q^{33} + 4 q^{37} - 15 q^{39} + 4 q^{41} - 12 q^{43} + 11 q^{45} - 3 q^{47} + 19 q^{51} - 10 q^{53} - 14 q^{55} - 68 q^{57} - 16 q^{59} - 6 q^{61} + 3 q^{65} + 8 q^{67} - 68 q^{69} + 32 q^{71} + 12 q^{73} + q^{75} - 13 q^{79} - 26 q^{81} + 8 q^{83} - 10 q^{85} + 15 q^{87} - 18 q^{89} - 8 q^{93} + 2 q^{95} + 18 q^{97} + 44 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - x^{3} - 2x^{2} - 3x + 9 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{3} + 2\nu^{2} - 2\nu - 3 ) / 6 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{3} + \nu^{2} + 5\nu ) / 3 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 2\nu^{3} + \nu^{2} + 2\nu - 9 ) / 3 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{3} + \beta_{2} - 2\beta _1 + 2 ) / 3 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( -\beta_{3} + 2\beta_{2} + 8\beta _1 + 1 ) / 3 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 4\beta_{3} - 2\beta_{2} - 2\beta _1 + 11 ) / 3 \) Copy content Toggle raw display

Character values

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

\(n\) \(981\) \(1081\) \(1177\) \(1471\)
\(\chi(n)\) \(1\) \(-1 + \beta_{1}\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
361.1
−1.18614 + 1.26217i
1.68614 0.396143i
−1.18614 1.26217i
1.68614 + 0.396143i
0 −1.18614 + 2.05446i 0 0.500000 + 0.866025i 0 0 0 −1.31386 2.27567i 0
361.2 0 1.68614 2.92048i 0 0.500000 + 0.866025i 0 0 0 −4.18614 7.25061i 0
961.1 0 −1.18614 2.05446i 0 0.500000 0.866025i 0 0 0 −1.31386 + 2.27567i 0
961.2 0 1.68614 + 2.92048i 0 0.500000 0.866025i 0 0 0 −4.18614 + 7.25061i 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
7.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1960.2.q.t 4
7.b odd 2 1 1960.2.q.r 4
7.c even 3 1 280.2.a.c 2
7.c even 3 1 inner 1960.2.q.t 4
7.d odd 6 1 1960.2.a.s 2
7.d odd 6 1 1960.2.q.r 4
21.h odd 6 1 2520.2.a.x 2
28.f even 6 1 3920.2.a.bt 2
28.g odd 6 1 560.2.a.h 2
35.i odd 6 1 9800.2.a.bu 2
35.j even 6 1 1400.2.a.r 2
35.l odd 12 2 1400.2.g.i 4
56.k odd 6 1 2240.2.a.bg 2
56.p even 6 1 2240.2.a.bk 2
84.n even 6 1 5040.2.a.by 2
140.p odd 6 1 2800.2.a.bk 2
140.w even 12 2 2800.2.g.r 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
280.2.a.c 2 7.c even 3 1
560.2.a.h 2 28.g odd 6 1
1400.2.a.r 2 35.j even 6 1
1400.2.g.i 4 35.l odd 12 2
1960.2.a.s 2 7.d odd 6 1
1960.2.q.r 4 7.b odd 2 1
1960.2.q.r 4 7.d odd 6 1
1960.2.q.t 4 1.a even 1 1 trivial
1960.2.q.t 4 7.c even 3 1 inner
2240.2.a.bg 2 56.k odd 6 1
2240.2.a.bk 2 56.p even 6 1
2520.2.a.x 2 21.h odd 6 1
2800.2.a.bk 2 140.p odd 6 1
2800.2.g.r 4 140.w even 12 2
3920.2.a.bt 2 28.f even 6 1
5040.2.a.by 2 84.n even 6 1
9800.2.a.bu 2 35.i odd 6 1

Hecke kernels

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

\( T_{3}^{4} - T_{3}^{3} + 9T_{3}^{2} + 8T_{3} + 64 \) Copy content Toggle raw display
\( T_{11}^{4} + 7T_{11}^{3} + 45T_{11}^{2} + 28T_{11} + 16 \) Copy content Toggle raw display
\( T_{13}^{2} - 3T_{13} - 6 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} - T^{3} + \cdots + 64 \) Copy content Toggle raw display
$5$ \( (T^{2} - T + 1)^{2} \) Copy content Toggle raw display
$7$ \( T^{4} \) Copy content Toggle raw display
$11$ \( T^{4} + 7 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$13$ \( (T^{2} - 3 T - 6)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} + 5 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$19$ \( T^{4} + 2 T^{3} + \cdots + 1024 \) Copy content Toggle raw display
$23$ \( T^{4} + 2 T^{3} + \cdots + 1024 \) Copy content Toggle raw display
$29$ \( (T^{2} + 3 T - 6)^{2} \) Copy content Toggle raw display
$31$ \( (T^{2} - 8 T + 64)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} - 2 T + 4)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} - 2 T - 32)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 6 T - 24)^{2} \) Copy content Toggle raw display
$47$ \( T^{4} + 3 T^{3} + \cdots + 5184 \) Copy content Toggle raw display
$53$ \( T^{4} + 10 T^{3} + \cdots + 64 \) Copy content Toggle raw display
$59$ \( (T^{2} + 8 T + 64)^{2} \) Copy content Toggle raw display
$61$ \( T^{4} + 6 T^{3} + \cdots + 576 \) Copy content Toggle raw display
$67$ \( (T^{2} - 4 T + 16)^{2} \) Copy content Toggle raw display
$71$ \( (T - 8)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} - 6 T + 36)^{2} \) Copy content Toggle raw display
$79$ \( T^{4} + 13 T^{3} + \cdots + 1024 \) Copy content Toggle raw display
$83$ \( (T^{2} - 4 T - 128)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} + 18 T^{3} + \cdots + 2304 \) Copy content Toggle raw display
$97$ \( (T^{2} - 9 T - 186)^{2} \) Copy content Toggle raw display
show more
show less