Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [4030,2,Mod(1,4030)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(4030, 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("4030.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 4030 = 2 \cdot 5 \cdot 13 \cdot 31 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 4030.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: | \(32.1797120146\) |
| Analytic rank: | \(1\) |
| Dimension: | \(6\) |
| Coefficient field: | 6.6.4418197.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{6} - 7x^{4} - x^{3} + 12x^{2} + 3x - 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| 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)
Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{5}\) 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
\( x^{6} - 7x^{4} - x^{3} + 12x^{2} + 3x - 1 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - 4\nu \)
|
| \(\beta_{4}\) | \(=\) |
\( \nu^{4} - \nu^{3} - 4\nu^{2} + 3\nu + 1 \)
|
| \(\beta_{5}\) | \(=\) |
\( \nu^{5} - 6\nu^{3} - \nu^{2} + 8\nu + 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 2 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} + 4\beta_1 \)
|
| \(\nu^{4}\) | \(=\) |
\( \beta_{4} + \beta_{3} + 4\beta_{2} + \beta _1 + 7 \)
|
| \(\nu^{5}\) | \(=\) |
\( \beta_{5} + 6\beta_{3} + \beta_{2} + 16\beta_1 \)
|
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 |
|
1.00000 | −2.58368 | 1.00000 | −1.00000 | −2.58368 | −0.667536 | 1.00000 | 3.67538 | −1.00000 | ||||||||||||||||||||||||||||||||||||
| 1.2 | 1.00000 | −1.56820 | 1.00000 | −1.00000 | −1.56820 | −1.49195 | 1.00000 | −0.540753 | −1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.3 | 1.00000 | −1.33263 | 1.00000 | −1.00000 | −1.33263 | 1.60759 | 1.00000 | −1.22409 | −1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.4 | 1.00000 | −0.252625 | 1.00000 | −1.00000 | −0.252625 | −1.23948 | 1.00000 | −2.93618 | −1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.5 | 1.00000 | 0.300926 | 1.00000 | −1.00000 | 0.300926 | 3.15038 | 1.00000 | −2.90944 | −1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.6 | 1.00000 | 2.43620 | 1.00000 | −1.00000 | 2.43620 | −3.35900 | 1.00000 | 2.93509 | −1.00000 | |||||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(5\) | \(1\) |
| \(13\) | \(-1\) |
| \(31\) | \(1\) |
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 | 4030.2.a.f | ✓ | 6 |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 4030.2.a.f | ✓ | 6 | 1.a | even | 1 | 1 | trivial |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3}^{6} + 3T_{3}^{5} - 4T_{3}^{4} - 18T_{3}^{3} - 12T_{3}^{2} + 2T_{3} + 1 \)
acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(4030))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T - 1)^{6} \)
|
| $3$ |
\( T^{6} + 3 T^{5} + \cdots + 1 \)
|
| $5$ |
\( (T + 1)^{6} \)
|
| $7$ |
\( T^{6} + 2 T^{5} + \cdots + 21 \)
|
| $11$ |
\( T^{6} + 4 T^{5} + \cdots + 679 \)
|
| $13$ |
\( (T - 1)^{6} \)
|
| $17$ |
\( T^{6} + 8 T^{5} + \cdots - 123 \)
|
| $19$ |
\( T^{6} + 9 T^{5} + \cdots - 563 \)
|
| $23$ |
\( T^{6} + 7 T^{5} + \cdots + 269 \)
|
| $29$ |
\( T^{6} + 14 T^{5} + \cdots + 7479 \)
|
| $31$ |
\( (T + 1)^{6} \)
|
| $37$ |
\( T^{6} - 97 T^{4} + \cdots + 2821 \)
|
| $41$ |
\( T^{6} - 2 T^{5} + \cdots - 1541 \)
|
| $43$ |
\( T^{6} + 7 T^{5} + \cdots + 10987 \)
|
| $47$ |
\( T^{6} + 8 T^{5} + \cdots - 511 \)
|
| $53$ |
\( T^{6} + 24 T^{5} + \cdots + 151837 \)
|
| $59$ |
\( T^{6} + 5 T^{5} + \cdots + 7861 \)
|
| $61$ |
\( T^{6} + 5 T^{5} + \cdots - 1127 \)
|
| $67$ |
\( T^{6} + 12 T^{5} + \cdots + 88351 \)
|
| $71$ |
\( T^{6} + 10 T^{5} + \cdots + 5341 \)
|
| $73$ |
\( T^{6} - 5 T^{5} + \cdots + 14119 \)
|
| $79$ |
\( T^{6} + 16 T^{5} + \cdots + 10123 \)
|
| $83$ |
\( T^{6} + 22 T^{5} + \cdots - 1407 \)
|
| $89$ |
\( T^{6} - 14 T^{5} + \cdots + 18497 \)
|
| $97$ |
\( T^{6} + 9 T^{5} + \cdots - 18983 \)
|
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