Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [10,14,Mod(1,10)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(10, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0]))
N = Newforms(chi, 14, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("10.1");
S:= CuspForms(chi, 14);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 10 = 2 \cdot 5 \) |
| Weight: | \( k \) | \(=\) | \( 14 \) |
| Character orbit: | \([\chi]\) | \(=\) | 10.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: | \(10.7230928952\) |
| Analytic rank: | \(0\) |
| Dimension: | \(1\) |
| Coefficient field: | \(\mathbb{Q}\) |
| Coefficient ring: | \(\mathbb{Z}\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| 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 |
|
−64.0000 | 1224.00 | 4096.00 | 15625.0 | −78336.0 | −65212.0 | −262144. | −96147.0 | −1.00000e6 | |||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(1\) |
| \(5\) | \(-1\) |
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 | 10.14.a.b | ✓ | 1 |
| 3.b | odd | 2 | 1 | 90.14.a.e | 1 | ||
| 4.b | odd | 2 | 1 | 80.14.a.a | 1 | ||
| 5.b | even | 2 | 1 | 50.14.a.c | 1 | ||
| 5.c | odd | 4 | 2 | 50.14.b.b | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 10.14.a.b | ✓ | 1 | 1.a | even | 1 | 1 | trivial |
| 50.14.a.c | 1 | 5.b | even | 2 | 1 | ||
| 50.14.b.b | 2 | 5.c | odd | 4 | 2 | ||
| 80.14.a.a | 1 | 4.b | odd | 2 | 1 | ||
| 90.14.a.e | 1 | 3.b | odd | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3} - 1224 \)
acting on \(S_{14}^{\mathrm{new}}(\Gamma_0(10))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T + 64 \)
|
| $3$ |
\( T - 1224 \)
|
| $5$ |
\( T - 15625 \)
|
| $7$ |
\( T + 65212 \)
|
| $11$ |
\( T - 7427652 \)
|
| $13$ |
\( T - 32243054 \)
|
| $17$ |
\( T + 20088222 \)
|
| $19$ |
\( T - 77070740 \)
|
| $23$ |
\( T - 664071804 \)
|
| $29$ |
\( T - 1558250670 \)
|
| $31$ |
\( T + 303290968 \)
|
| $37$ |
\( T + 775029322 \)
|
| $41$ |
\( T - 43696205082 \)
|
| $43$ |
\( T + 68680553536 \)
|
| $47$ |
\( T + 138979393812 \)
|
| $53$ |
\( T + 103656826986 \)
|
| $59$ |
\( T - 394887188940 \)
|
| $61$ |
\( T + 488570895538 \)
|
| $67$ |
\( T - 368381730848 \)
|
| $71$ |
\( T - 325473704592 \)
|
| $73$ |
\( T + 2262556998406 \)
|
| $79$ |
\( T - 2032917332000 \)
|
| $83$ |
\( T + 854518199496 \)
|
| $89$ |
\( T - 8906829484890 \)
|
| $97$ |
\( T + 9873550533742 \)
|
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