Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [8624,2,Mod(1,8624)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(8624, 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("8624.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 8624 = 2^{4} \cdot 7^{2} \cdot 11 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 8624.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: | \(68.8629867032\) |
| Analytic rank: | \(1\) |
| Dimension: | \(5\) |
| Coefficient field: | 5.5.559701.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{5} - x^{4} - 7x^{3} + 4x^{2} + 10x - 3 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 2 \) |
| Twist minimal: | no (minimal twist has level 616) |
| 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)
Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\beta_2,\beta_3,\beta_4\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.
Basis of coefficient ring in terms of a root \(\nu\) of
\( x^{5} - x^{4} - 7x^{3} + 4x^{2} + 10x - 3 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 3 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - \nu^{2} - 4\nu + 2 \)
|
| \(\beta_{4}\) | \(=\) |
\( \nu^{4} - \nu^{3} - 6\nu^{2} + 3\nu + 5 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 3 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} + \beta_{2} + 4\beta _1 + 1 \)
|
| \(\nu^{4}\) | \(=\) |
\( \beta_{4} + \beta_{3} + 7\beta_{2} + \beta _1 + 14 \)
|
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 | −2.59735 | 0 | −2.14886 | 0 | 0 | 0 | 3.74621 | 0 | |||||||||||||||||||||||||||||||||
| 1.2 | 0 | −1.49300 | 0 | 1.26396 | 0 | 0 | 0 | −0.770961 | 0 | ||||||||||||||||||||||||||||||||||
| 1.3 | 0 | −0.284226 | 0 | 2.20344 | 0 | 0 | 0 | −2.91922 | 0 | ||||||||||||||||||||||||||||||||||
| 1.4 | 0 | 1.33366 | 0 | −1.11230 | 0 | 0 | 0 | −1.22136 | 0 | ||||||||||||||||||||||||||||||||||
| 1.5 | 0 | 2.04091 | 0 | −4.20624 | 0 | 0 | 0 | 1.16532 | 0 | ||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(1\) |
| \(7\) | \(-1\) |
| \(11\) | \(-1\) |
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 | 8624.2.a.db | 5 | |
| 4.b | odd | 2 | 1 | 4312.2.a.bg | 5 | ||
| 7.b | odd | 2 | 1 | 8624.2.a.dc | 5 | ||
| 7.d | odd | 6 | 2 | 1232.2.q.o | 10 | ||
| 28.d | even | 2 | 1 | 4312.2.a.bf | 5 | ||
| 28.f | even | 6 | 2 | 616.2.q.f | ✓ | 10 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 616.2.q.f | ✓ | 10 | 28.f | even | 6 | 2 | |
| 1232.2.q.o | 10 | 7.d | odd | 6 | 2 | ||
| 4312.2.a.bf | 5 | 28.d | even | 2 | 1 | ||
| 4312.2.a.bg | 5 | 4.b | odd | 2 | 1 | ||
| 8624.2.a.db | 5 | 1.a | even | 1 | 1 | trivial | |
| 8624.2.a.dc | 5 | 7.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 \(S_{2}^{\mathrm{new}}(\Gamma_0(8624))\):
|
\( T_{3}^{5} + T_{3}^{4} - 7T_{3}^{3} - 4T_{3}^{2} + 10T_{3} + 3 \)
|
|
\( T_{5}^{5} + 4T_{5}^{4} - 7T_{5}^{3} - 25T_{5}^{2} + 10T_{5} + 28 \)
|
|
\( T_{13}^{5} + T_{13}^{4} - 39T_{13}^{3} - 10T_{13}^{2} + 12T_{13} - 1 \)
|
|
\( T_{17}^{5} + 9T_{17}^{4} + 2T_{17}^{3} - 127T_{17}^{2} - 144T_{17} + 268 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{5} \)
|
| $3$ |
\( T^{5} + T^{4} - 7 T^{3} + \cdots + 3 \)
|
| $5$ |
\( T^{5} + 4 T^{4} + \cdots + 28 \)
|
| $7$ |
\( T^{5} \)
|
| $11$ |
\( (T - 1)^{5} \)
|
| $13$ |
\( T^{5} + T^{4} - 39 T^{3} + \cdots - 1 \)
|
| $17$ |
\( T^{5} + 9 T^{4} + \cdots + 268 \)
|
| $19$ |
\( T^{5} - T^{4} + \cdots + 172 \)
|
| $23$ |
\( T^{5} - 8 T^{4} + \cdots + 868 \)
|
| $29$ |
\( T^{5} - 9 T^{4} + \cdots + 401 \)
|
| $31$ |
\( T^{5} - 3 T^{4} + \cdots + 16 \)
|
| $37$ |
\( T^{5} - 2 T^{4} + \cdots - 96 \)
|
| $41$ |
\( T^{5} + 15 T^{4} + \cdots + 516 \)
|
| $43$ |
\( T^{5} + 14 T^{4} + \cdots - 5488 \)
|
| $47$ |
\( T^{5} - 11 T^{4} + \cdots - 36 \)
|
| $53$ |
\( T^{5} + 9 T^{4} + \cdots - 2468 \)
|
| $59$ |
\( T^{5} - 4 T^{4} + \cdots + 14353 \)
|
| $61$ |
\( T^{5} - 2 T^{4} + \cdots - 1256 \)
|
| $67$ |
\( T^{5} - 8 T^{4} + \cdots - 4136 \)
|
| $71$ |
\( T^{5} + 15 T^{4} + \cdots - 5348 \)
|
| $73$ |
\( T^{5} + 26 T^{4} + \cdots - 10796 \)
|
| $79$ |
\( T^{5} - 3 T^{4} + \cdots + 6787 \)
|
| $83$ |
\( T^{5} + T^{4} + \cdots + 37116 \)
|
| $89$ |
\( T^{5} + 41 T^{4} + \cdots + 12148 \)
|
| $97$ |
\( T^{5} + 7 T^{4} + \cdots + 709 \)
|
| show more | |
| show less |