Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [9680,2,Mod(1,9680)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(9680, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("9680.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 9680 = 2^{4} \cdot 5 \cdot 11^{2} \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 9680.a (trivial) |
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: | yes |
| Analytic conductor: | \(77.2951891566\) |
| Analytic rank: | \(1\) |
| Dimension: | \(1\) |
| Coefficient field: | \(\mathbb{Q}\) |
| Coefficient ring: | \(\mathbb{Z}\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 40) |
| Fricke sign: | \(1\) |
| Sato-Tate group: | $\mathrm{SU}(2)$ |
$q$-expansion
comment: q-expansion
sage: f.q_expansion() # note that sage often uses an isomorphic number field
gp: mfcoefs(f, 20)
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.1 |
|
0 | 0 | 0 | 1.00000 | 0 | −4.00000 | 0 | −3.00000 | 0 | |||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(1\) |
| \(5\) | \(-1\) |
| \(11\) | \(-1\) |
Inner twists
This newform does not admit any (nontrivial) inner twists.
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 9680.2.a.q | 1 | |
| 4.b | odd | 2 | 1 | 4840.2.a.f | 1 | ||
| 11.b | odd | 2 | 1 | 80.2.a.a | 1 | ||
| 33.d | even | 2 | 1 | 720.2.a.e | 1 | ||
| 44.c | even | 2 | 1 | 40.2.a.a | ✓ | 1 | |
| 55.d | odd | 2 | 1 | 400.2.a.e | 1 | ||
| 55.e | even | 4 | 2 | 400.2.c.d | 2 | ||
| 77.b | even | 2 | 1 | 3920.2.a.s | 1 | ||
| 88.b | odd | 2 | 1 | 320.2.a.d | 1 | ||
| 88.g | even | 2 | 1 | 320.2.a.c | 1 | ||
| 132.d | odd | 2 | 1 | 360.2.a.a | 1 | ||
| 165.d | even | 2 | 1 | 3600.2.a.h | 1 | ||
| 165.l | odd | 4 | 2 | 3600.2.f.t | 2 | ||
| 176.i | even | 4 | 2 | 1280.2.d.j | 2 | ||
| 176.l | odd | 4 | 2 | 1280.2.d.a | 2 | ||
| 220.g | even | 2 | 1 | 200.2.a.c | 1 | ||
| 220.i | odd | 4 | 2 | 200.2.c.b | 2 | ||
| 264.m | even | 2 | 1 | 2880.2.a.bg | 1 | ||
| 264.p | odd | 2 | 1 | 2880.2.a.t | 1 | ||
| 308.g | odd | 2 | 1 | 1960.2.a.g | 1 | ||
| 308.m | odd | 6 | 2 | 1960.2.q.i | 2 | ||
| 308.n | even | 6 | 2 | 1960.2.q.h | 2 | ||
| 396.k | even | 6 | 2 | 3240.2.q.k | 2 | ||
| 396.o | odd | 6 | 2 | 3240.2.q.x | 2 | ||
| 440.c | even | 2 | 1 | 1600.2.a.o | 1 | ||
| 440.o | odd | 2 | 1 | 1600.2.a.k | 1 | ||
| 440.t | even | 4 | 2 | 1600.2.c.m | 2 | ||
| 440.w | odd | 4 | 2 | 1600.2.c.k | 2 | ||
| 572.b | even | 2 | 1 | 6760.2.a.i | 1 | ||
| 660.g | odd | 2 | 1 | 1800.2.a.v | 1 | ||
| 660.q | even | 4 | 2 | 1800.2.f.a | 2 | ||
| 1540.b | odd | 2 | 1 | 9800.2.a.x | 1 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 40.2.a.a | ✓ | 1 | 44.c | even | 2 | 1 | |
| 80.2.a.a | 1 | 11.b | odd | 2 | 1 | ||
| 200.2.a.c | 1 | 220.g | even | 2 | 1 | ||
| 200.2.c.b | 2 | 220.i | odd | 4 | 2 | ||
| 320.2.a.c | 1 | 88.g | even | 2 | 1 | ||
| 320.2.a.d | 1 | 88.b | odd | 2 | 1 | ||
| 360.2.a.a | 1 | 132.d | odd | 2 | 1 | ||
| 400.2.a.e | 1 | 55.d | odd | 2 | 1 | ||
| 400.2.c.d | 2 | 55.e | even | 4 | 2 | ||
| 720.2.a.e | 1 | 33.d | even | 2 | 1 | ||
| 1280.2.d.a | 2 | 176.l | odd | 4 | 2 | ||
| 1280.2.d.j | 2 | 176.i | even | 4 | 2 | ||
| 1600.2.a.k | 1 | 440.o | odd | 2 | 1 | ||
| 1600.2.a.o | 1 | 440.c | even | 2 | 1 | ||
| 1600.2.c.k | 2 | 440.w | odd | 4 | 2 | ||
| 1600.2.c.m | 2 | 440.t | even | 4 | 2 | ||
| 1800.2.a.v | 1 | 660.g | odd | 2 | 1 | ||
| 1800.2.f.a | 2 | 660.q | even | 4 | 2 | ||
| 1960.2.a.g | 1 | 308.g | odd | 2 | 1 | ||
| 1960.2.q.h | 2 | 308.n | even | 6 | 2 | ||
| 1960.2.q.i | 2 | 308.m | odd | 6 | 2 | ||
| 2880.2.a.t | 1 | 264.p | odd | 2 | 1 | ||
| 2880.2.a.bg | 1 | 264.m | even | 2 | 1 | ||
| 3240.2.q.k | 2 | 396.k | even | 6 | 2 | ||
| 3240.2.q.x | 2 | 396.o | odd | 6 | 2 | ||
| 3600.2.a.h | 1 | 165.d | even | 2 | 1 | ||
| 3600.2.f.t | 2 | 165.l | odd | 4 | 2 | ||
| 3920.2.a.s | 1 | 77.b | even | 2 | 1 | ||
| 4840.2.a.f | 1 | 4.b | odd | 2 | 1 | ||
| 6760.2.a.i | 1 | 572.b | even | 2 | 1 | ||
| 9680.2.a.q | 1 | 1.a | even | 1 | 1 | trivial | |
| 9800.2.a.x | 1 | 1540.b | odd | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(9680))\):
|
\( T_{3} \)
|
|
\( T_{7} + 4 \)
|
|
\( T_{13} - 2 \)
|
|
\( T_{17} + 2 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T \)
|
| $3$ |
\( T \)
|
| $5$ |
\( T - 1 \)
|
| $7$ |
\( T + 4 \)
|
| $11$ |
\( T \)
|
| $13$ |
\( T - 2 \)
|
| $17$ |
\( T + 2 \)
|
| $19$ |
\( T - 4 \)
|
| $23$ |
\( T + 4 \)
|
| $29$ |
\( T - 2 \)
|
| $31$ |
\( T - 8 \)
|
| $37$ |
\( T - 6 \)
|
| $41$ |
\( T - 6 \)
|
| $43$ |
\( T + 8 \)
|
| $47$ |
\( T + 4 \)
|
| $53$ |
\( T - 6 \)
|
| $59$ |
\( T - 4 \)
|
| $61$ |
\( T - 2 \)
|
| $67$ |
\( T + 8 \)
|
| $71$ |
\( T \)
|
| $73$ |
\( T - 6 \)
|
| $79$ |
\( T \)
|
| $83$ |
\( T + 16 \)
|
| $89$ |
\( T + 6 \)
|
| $97$ |
\( T + 14 \)
|
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