Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [98,12,Mod(1,98)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(98, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0]))
N = Newforms(chi, 12, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("98.1");
S:= CuspForms(chi, 12);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 98 = 2 \cdot 7^{2} \) |
| Weight: | \( k \) | \(=\) | \( 12 \) |
| Character orbit: | \([\chi]\) | \(=\) | 98.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: | \(75.2976316948\) |
| Analytic rank: | \(0\) |
| Dimension: | \(1\) |
| Coefficient field: | \(\mathbb{Q}\) |
| Coefficient ring: | \(\mathbb{Z}\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 14) |
| 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 |
|
32.0000 | 90.0000 | 1024.00 | 7480.00 | 2880.00 | 0 | 32768.0 | −169047. | 239360. | |||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(7\) | \(-1\) |
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 | 98.12.a.b | 1 | |
| 7.b | odd | 2 | 1 | 14.12.a.b | ✓ | 1 | |
| 7.c | even | 3 | 2 | 98.12.c.a | 2 | ||
| 7.d | odd | 6 | 2 | 98.12.c.b | 2 | ||
| 21.c | even | 2 | 1 | 126.12.a.b | 1 | ||
| 28.d | even | 2 | 1 | 112.12.a.a | 1 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 14.12.a.b | ✓ | 1 | 7.b | odd | 2 | 1 | |
| 98.12.a.b | 1 | 1.a | even | 1 | 1 | trivial | |
| 98.12.c.a | 2 | 7.c | even | 3 | 2 | ||
| 98.12.c.b | 2 | 7.d | odd | 6 | 2 | ||
| 112.12.a.a | 1 | 28.d | even | 2 | 1 | ||
| 126.12.a.b | 1 | 21.c | even | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3} - 90 \)
acting on \(S_{12}^{\mathrm{new}}(\Gamma_0(98))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T - 32 \)
|
| $3$ |
\( T - 90 \)
|
| $5$ |
\( T - 7480 \)
|
| $7$ |
\( T \)
|
| $11$ |
\( T + 294536 \)
|
| $13$ |
\( T - 210588 \)
|
| $17$ |
\( T - 6962906 \)
|
| $19$ |
\( T - 9346390 \)
|
| $23$ |
\( T - 51172000 \)
|
| $29$ |
\( T - 166196354 \)
|
| $31$ |
\( T + 119000988 \)
|
| $37$ |
\( T + 275545510 \)
|
| $41$ |
\( T - 197988378 \)
|
| $43$ |
\( T + 809489728 \)
|
| $47$ |
\( T - 2600196204 \)
|
| $53$ |
\( T - 733631454 \)
|
| $59$ |
\( T - 4657126942 \)
|
| $61$ |
\( T - 5135837424 \)
|
| $67$ |
\( T - 8810564836 \)
|
| $71$ |
\( T + 3849006656 \)
|
| $73$ |
\( T - 18686748254 \)
|
| $79$ |
\( T + 29850061992 \)
|
| $83$ |
\( T - 5875980446 \)
|
| $89$ |
\( T + 83056539450 \)
|
| $97$ |
\( T + 149400800374 \)
|
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