Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [6468,2,Mod(1,6468)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(6468, 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("6468.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 6468 = 2^{2} \cdot 3 \cdot 7^{2} \cdot 11 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 6468.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: | \(51.6472400274\) |
| Analytic rank: | \(0\) |
| Dimension: | \(5\) |
| Coefficient field: | 5.5.81384912.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{5} - 24x^{3} - 4x^{2} + 108x + 96 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{17}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 924) |
| 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
\( x^{5} - 24x^{3} - 4x^{2} + 108x + 96 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{2} - 10 ) / 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( \nu^{4} - 20\nu^{2} + 4\nu + 48 ) / 4 \)
|
| \(\beta_{4}\) | \(=\) |
\( ( \nu^{4} - 2\nu^{3} - 22\nu^{2} + 36\nu + 72 ) / 4 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( 2\beta_{2} + 10 \)
|
| \(\nu^{3}\) | \(=\) |
\( -2\beta_{4} + 2\beta_{3} - 2\beta_{2} + 16\beta _1 + 2 \)
|
| \(\nu^{4}\) | \(=\) |
\( 4\beta_{3} + 40\beta_{2} - 4\beta _1 + 152 \)
|
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 | 1.00000 | 0 | −4.17763 | 0 | 0 | 0 | 1.00000 | 0 | |||||||||||||||||||||||||||||||||
| 1.2 | 0 | 1.00000 | 0 | −2.87222 | 0 | 0 | 0 | 1.00000 | 0 | ||||||||||||||||||||||||||||||||||
| 1.3 | 0 | 1.00000 | 0 | 1.18510 | 0 | 0 | 0 | 1.00000 | 0 | ||||||||||||||||||||||||||||||||||
| 1.4 | 0 | 1.00000 | 0 | 1.57303 | 0 | 0 | 0 | 1.00000 | 0 | ||||||||||||||||||||||||||||||||||
| 1.5 | 0 | 1.00000 | 0 | 4.29172 | 0 | 0 | 0 | 1.00000 | 0 | ||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(3\) | \(-1\) |
| \(7\) | \(1\) |
| \(11\) | \(-1\) |
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 | 6468.2.a.bb | 5 | |
| 7.b | odd | 2 | 1 | 6468.2.a.ba | 5 | ||
| 7.c | even | 3 | 2 | 924.2.q.f | ✓ | 10 | |
| 21.h | odd | 6 | 2 | 2772.2.s.h | 10 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 924.2.q.f | ✓ | 10 | 7.c | even | 3 | 2 | |
| 2772.2.s.h | 10 | 21.h | odd | 6 | 2 | ||
| 6468.2.a.ba | 5 | 7.b | odd | 2 | 1 | ||
| 6468.2.a.bb | 5 | 1.a | even | 1 | 1 | trivial | |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(6468))\):
|
\( T_{5}^{5} - 24T_{5}^{3} + 4T_{5}^{2} + 108T_{5} - 96 \)
|
|
\( T_{13}^{5} - T_{13}^{4} - 38T_{13}^{3} - 4T_{13}^{2} + 364T_{13} + 476 \)
|
|
\( T_{17}^{5} - 66T_{17}^{3} + 80T_{17}^{2} + 1113T_{17} - 2478 \)
|
|
\( T_{23}^{5} - 66T_{23}^{3} - 204T_{23}^{2} + 9T_{23} + 36 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{5} \)
|
| $3$ |
\( (T - 1)^{5} \)
|
| $5$ |
\( T^{5} - 24 T^{3} + \cdots - 96 \)
|
| $7$ |
\( T^{5} \)
|
| $11$ |
\( (T - 1)^{5} \)
|
| $13$ |
\( T^{5} - T^{4} + \cdots + 476 \)
|
| $17$ |
\( T^{5} - 66 T^{3} + \cdots - 2478 \)
|
| $19$ |
\( T^{5} - T^{4} + \cdots - 1233 \)
|
| $23$ |
\( T^{5} - 66 T^{3} + \cdots + 36 \)
|
| $29$ |
\( T^{5} - 6 T^{4} + \cdots - 414 \)
|
| $31$ |
\( T^{5} + 5 T^{4} + \cdots - 652 \)
|
| $37$ |
\( T^{5} + 5 T^{4} + \cdots + 10157 \)
|
| $41$ |
\( T^{5} - 6 T^{4} + \cdots + 48 \)
|
| $43$ |
\( T^{5} + 5 T^{4} + \cdots + 2975 \)
|
| $47$ |
\( T^{5} - 18 T^{4} + \cdots + 6342 \)
|
| $53$ |
\( T^{5} - 30 T^{4} + \cdots - 3288 \)
|
| $59$ |
\( T^{5} - 66 T^{3} + \cdots + 36 \)
|
| $61$ |
\( T^{5} - 4 T^{4} + \cdots - 376 \)
|
| $67$ |
\( T^{5} - 25 T^{4} + \cdots + 588 \)
|
| $71$ |
\( T^{5} - 150 T^{3} + \cdots - 2016 \)
|
| $73$ |
\( T^{5} + 11 T^{4} + \cdots - 12828 \)
|
| $79$ |
\( T^{5} + 11 T^{4} + \cdots + 10892 \)
|
| $83$ |
\( T^{5} - 120 T^{3} + \cdots + 1152 \)
|
| $89$ |
\( T^{5} - 30 T^{4} + \cdots + 672 \)
|
| $97$ |
\( T^{5} - 10 T^{4} + \cdots - 9418 \)
|
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