Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [4732,2,Mod(1,4732)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(4732, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([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("4732.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 4732 = 2^{2} \cdot 7 \cdot 13^{2} \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 4732.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: | \(37.7852102365\) |
| Analytic rank: | \(1\) |
| Dimension: | \(4\) |
| Coefficient field: | 4.4.25492.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - 8x^{2} - 2x + 8 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 364) |
| 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 \(1,\beta_1,\beta_2,\beta_3\) 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
\( x^{4} - 8x^{2} - 2x + 8 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{3} - 6\nu - 2 ) / 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( -\nu^{3} + 2\nu^{2} + 6\nu - 6 ) / 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{3} + \beta_{2} + 4 \)
|
| \(\nu^{3}\) | \(=\) |
\( 2\beta_{2} + 6\beta _1 + 2 \)
|
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 | −2.40538 | 0 | −0.257562 | 0 | −1.00000 | 0 | 2.78585 | 0 | ||||||||||||||||||||||||||||||
| 1.2 | 0 | −1.29363 | 0 | −2.79846 | 0 | −1.00000 | 0 | −1.32653 | 0 | |||||||||||||||||||||||||||||||
| 1.3 | 0 | 0.927719 | 0 | 2.38393 | 0 | −1.00000 | 0 | −2.13934 | 0 | |||||||||||||||||||||||||||||||
| 1.4 | 0 | 2.77129 | 0 | −2.32791 | 0 | −1.00000 | 0 | 4.68002 | 0 | |||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \( -1 \) |
| \(7\) | \( +1 \) |
| \(13\) | \( -1 \) |
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 | 4732.2.a.o | 4 | |
| 13.b | even | 2 | 1 | 4732.2.a.p | 4 | ||
| 13.d | odd | 4 | 2 | 364.2.g.a | ✓ | 8 | |
| 39.f | even | 4 | 2 | 3276.2.e.f | 8 | ||
| 52.f | even | 4 | 2 | 1456.2.k.d | 8 | ||
| 91.i | even | 4 | 2 | 2548.2.g.g | 8 | ||
| 91.z | odd | 12 | 4 | 2548.2.y.f | 16 | ||
| 91.bb | even | 12 | 4 | 2548.2.y.e | 16 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 364.2.g.a | ✓ | 8 | 13.d | odd | 4 | 2 | |
| 1456.2.k.d | 8 | 52.f | even | 4 | 2 | ||
| 2548.2.g.g | 8 | 91.i | even | 4 | 2 | ||
| 2548.2.y.e | 16 | 91.bb | even | 12 | 4 | ||
| 2548.2.y.f | 16 | 91.z | odd | 12 | 4 | ||
| 3276.2.e.f | 8 | 39.f | even | 4 | 2 | ||
| 4732.2.a.o | 4 | 1.a | even | 1 | 1 | trivial | |
| 4732.2.a.p | 4 | 13.b | even | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(4732))\):
|
\( T_{3}^{4} - 8T_{3}^{2} - 2T_{3} + 8 \)
|
|
\( T_{5}^{4} + 3T_{5}^{3} - 5T_{5}^{2} - 17T_{5} - 4 \)
|
|
\( T_{11}^{4} - 18T_{11}^{2} - 2T_{11} + 16 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} \)
|
| $3$ |
\( T^{4} - 8 T^{2} + \cdots + 8 \)
|
| $5$ |
\( T^{4} + 3 T^{3} + \cdots - 4 \)
|
| $7$ |
\( (T + 1)^{4} \)
|
| $11$ |
\( T^{4} - 18 T^{2} + \cdots + 16 \)
|
| $13$ |
\( T^{4} \)
|
| $17$ |
\( T^{4} + 2 T^{3} + \cdots + 44 \)
|
| $19$ |
\( T^{4} + 3 T^{3} + \cdots - 176 \)
|
| $23$ |
\( T^{4} - 3 T^{3} + \cdots - 36 \)
|
| $29$ |
\( T^{4} + T^{3} + \cdots + 1182 \)
|
| $31$ |
\( T^{4} + 13 T^{3} + \cdots - 568 \)
|
| $37$ |
\( T^{4} - 106 T^{2} + \cdots - 144 \)
|
| $41$ |
\( T^{4} - 10 T^{3} + \cdots - 352 \)
|
| $43$ |
\( T^{4} - 3 T^{3} + \cdots + 232 \)
|
| $47$ |
\( T^{4} - 3 T^{3} + \cdots + 2008 \)
|
| $53$ |
\( T^{4} - 11 T^{3} + \cdots - 54 \)
|
| $59$ |
\( T^{4} + 22 T^{3} + \cdots + 384 \)
|
| $61$ |
\( T^{4} - 4 T^{3} + \cdots - 16 \)
|
| $67$ |
\( T^{4} - 12 T^{3} + \cdots - 3456 \)
|
| $71$ |
\( T^{4} + 26 T^{3} + \cdots - 1488 \)
|
| $73$ |
\( T^{4} - 13 T^{3} + \cdots + 1556 \)
|
| $79$ |
\( T^{4} + 13 T^{3} + \cdots - 36 \)
|
| $83$ |
\( T^{4} + 19 T^{3} + \cdots - 8688 \)
|
| $89$ |
\( T^{4} + 7 T^{3} + \cdots + 7572 \)
|
| $97$ |
\( T^{4} + 19 T^{3} + \cdots - 8668 \)
|
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