Properties

Label 3960.1.x.e
Level $3960$
Weight $1$
Character orbit 3960.x
Analytic conductor $1.976$
Analytic rank $0$
Dimension $2$
Projective image $D_{2}$
CM/RM discs -55, -120, 264
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [3960,1,Mod(109,3960)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3960, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1, 0, 1, 1]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("3960.109");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 3960 = 2^{3} \cdot 3^{2} \cdot 5 \cdot 11 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 3960.x (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: \(1.97629745003\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(i)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{2}\)
Projective field: Galois closure of \(\Q(\sqrt{-30}, \sqrt{-55})\)
Artin image: $D_4:C_2$
Artin field: Galois closure of 8.0.225815040000.2

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q - q^{2} + q^{4} - i q^{5} - q^{8} +O(q^{10}) \) Copy content Toggle raw display \( q - q^{2} + q^{4} - i q^{5} - q^{8} + i q^{10} + i q^{11} - 2 i q^{13} + q^{16} - 2 q^{17} - i q^{20} - i q^{22} - q^{25} + 2 i q^{26} - 2 q^{31} - q^{32} + 2 q^{34} + i q^{40} + 2 i q^{43} + i q^{44} - q^{49} + q^{50} - 2 i q^{52} + q^{55} - 2 i q^{59} + 2 q^{62} + q^{64} - 2 q^{65} - 2 q^{68} - i q^{80} + 2 i q^{85} - 2 i q^{86} - i q^{88} + q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{2} + 2 q^{4} - 2 q^{8}+O(q^{10}) \) Copy content Toggle raw display \( 2 q - 2 q^{2} + 2 q^{4} - 2 q^{8} + 2 q^{16} - 4 q^{17} - 2 q^{25} - 4 q^{31} - 2 q^{32} + 4 q^{34} - 2 q^{49} + 2 q^{50} + 2 q^{55} + 4 q^{62} + 2 q^{64} - 4 q^{65} - 4 q^{68} + 2 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/3960\mathbb{Z}\right)^\times\).

\(n\) \(991\) \(1981\) \(2377\) \(2521\) \(3521\)
\(\chi(n)\) \(1\) \(-1\) \(-1\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
109.1
1.00000i
1.00000i
−1.00000 0 1.00000 1.00000i 0 0 −1.00000 0 1.00000i
109.2 −1.00000 0 1.00000 1.00000i 0 0 −1.00000 0 1.00000i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
55.d odd 2 1 CM by \(\Q(\sqrt{-55}) \)
120.i odd 2 1 CM by \(\Q(\sqrt{-30}) \)
264.m even 2 1 RM by \(\Q(\sqrt{66}) \)
8.b even 2 1 inner
15.d odd 2 1 inner
33.d even 2 1 inner
440.o odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 3960.1.x.e 2
3.b odd 2 1 3960.1.x.h yes 2
5.b even 2 1 3960.1.x.h yes 2
8.b even 2 1 inner 3960.1.x.e 2
11.b odd 2 1 3960.1.x.h yes 2
15.d odd 2 1 inner 3960.1.x.e 2
24.h odd 2 1 3960.1.x.h yes 2
33.d even 2 1 inner 3960.1.x.e 2
40.f even 2 1 3960.1.x.h yes 2
55.d odd 2 1 CM 3960.1.x.e 2
88.b odd 2 1 3960.1.x.h yes 2
120.i odd 2 1 CM 3960.1.x.e 2
165.d even 2 1 3960.1.x.h yes 2
264.m even 2 1 RM 3960.1.x.e 2
440.o odd 2 1 inner 3960.1.x.e 2
1320.u even 2 1 3960.1.x.h yes 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3960.1.x.e 2 1.a even 1 1 trivial
3960.1.x.e 2 8.b even 2 1 inner
3960.1.x.e 2 15.d odd 2 1 inner
3960.1.x.e 2 33.d even 2 1 inner
3960.1.x.e 2 55.d odd 2 1 CM
3960.1.x.e 2 120.i odd 2 1 CM
3960.1.x.e 2 264.m even 2 1 RM
3960.1.x.e 2 440.o odd 2 1 inner
3960.1.x.h yes 2 3.b odd 2 1
3960.1.x.h yes 2 5.b even 2 1
3960.1.x.h yes 2 11.b odd 2 1
3960.1.x.h yes 2 24.h odd 2 1
3960.1.x.h yes 2 40.f even 2 1
3960.1.x.h yes 2 88.b odd 2 1
3960.1.x.h yes 2 165.d even 2 1
3960.1.x.h yes 2 1320.u even 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(3960, [\chi])\):

\( T_{7} \) Copy content Toggle raw display
\( T_{17} + 2 \) Copy content Toggle raw display
\( T_{19} \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T + 1)^{2} \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} + 1 \) Copy content Toggle raw display
$7$ \( T^{2} \) Copy content Toggle raw display
$11$ \( T^{2} + 1 \) Copy content Toggle raw display
$13$ \( T^{2} + 4 \) Copy content Toggle raw display
$17$ \( (T + 2)^{2} \) Copy content Toggle raw display
$19$ \( T^{2} \) Copy content Toggle raw display
$23$ \( T^{2} \) Copy content Toggle raw display
$29$ \( T^{2} \) Copy content Toggle raw display
$31$ \( (T + 2)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} \) Copy content Toggle raw display
$41$ \( T^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 4 \) Copy content Toggle raw display
$47$ \( T^{2} \) Copy content Toggle raw display
$53$ \( T^{2} \) Copy content Toggle raw display
$59$ \( T^{2} + 4 \) Copy content Toggle raw display
$61$ \( T^{2} \) Copy content Toggle raw display
$67$ \( T^{2} \) Copy content Toggle raw display
$71$ \( T^{2} \) Copy content Toggle raw display
$73$ \( T^{2} \) Copy content Toggle raw display
$79$ \( T^{2} \) Copy content Toggle raw display
$83$ \( T^{2} \) Copy content Toggle raw display
$89$ \( T^{2} \) Copy content Toggle raw display
$97$ \( T^{2} \) Copy content Toggle raw display
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