Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [2475,4,Mod(1,2475)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(2475, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("2475.1");
S:= CuspForms(chi, 4);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 2475 = 3^{2} \cdot 5^{2} \cdot 11 \) |
| Weight: | \( k \) | \(=\) | \( 4 \) |
| Character orbit: | \([\chi]\) | \(=\) | 2475.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: | \(146.029727264\) |
| Analytic rank: | \(0\) |
| Dimension: | \(5\) |
| Coefficient field: | \(\mathbb{Q}[x]/(x^{5} - \cdots)\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{5} - 2x^{4} - 24x^{3} + 31x^{2} + 108x - 84 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{7}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 275) |
| 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
\( x^{5} - 2x^{4} - 24x^{3} + 31x^{2} + 108x - 84 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - \nu - 10 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( \nu^{4} - 24\nu^{2} - 9\nu + 82 ) / 8 \)
|
| \(\beta_{4}\) | \(=\) |
\( ( -\nu^{4} + 4\nu^{3} + 16\nu^{2} - 51\nu - 18 ) / 4 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + \beta _1 + 10 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{4} + 2\beta_{3} + 2\beta_{2} + 17\beta _1 + 4 \)
|
| \(\nu^{4}\) | \(=\) |
\( 8\beta_{3} + 24\beta_{2} + 33\beta _1 + 158 \)
|
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 |
|
−4.83592 | 0 | 15.3861 | 0 | 0 | 11.6188 | −35.7185 | 0 | 0 | |||||||||||||||||||||||||||||||||
| 1.2 | −2.68861 | 0 | −0.771363 | 0 | 0 | 13.6511 | 23.5828 | 0 | 0 | ||||||||||||||||||||||||||||||||||
| 1.3 | −0.715355 | 0 | −7.48827 | 0 | 0 | −1.15778 | 11.0796 | 0 | 0 | ||||||||||||||||||||||||||||||||||
| 1.4 | 2.28165 | 0 | −2.79408 | 0 | 0 | −27.1421 | −24.6283 | 0 | 0 | ||||||||||||||||||||||||||||||||||
| 1.5 | 3.95823 | 0 | 7.66762 | 0 | 0 | 27.0299 | −1.31563 | 0 | 0 | ||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(3\) | \(-1\) |
| \(5\) | \(-1\) |
| \(11\) | \(1\) |
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 | 2475.4.a.bg | 5 | |
| 3.b | odd | 2 | 1 | 275.4.a.i | yes | 5 | |
| 5.b | even | 2 | 1 | 2475.4.a.bk | 5 | ||
| 15.d | odd | 2 | 1 | 275.4.a.f | ✓ | 5 | |
| 15.e | even | 4 | 2 | 275.4.b.g | 10 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 275.4.a.f | ✓ | 5 | 15.d | odd | 2 | 1 | |
| 275.4.a.i | yes | 5 | 3.b | odd | 2 | 1 | |
| 275.4.b.g | 10 | 15.e | even | 4 | 2 | ||
| 2475.4.a.bg | 5 | 1.a | even | 1 | 1 | trivial | |
| 2475.4.a.bk | 5 | 5.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 \(S_{4}^{\mathrm{new}}(\Gamma_0(2475))\):
|
\( T_{2}^{5} + 2T_{2}^{4} - 24T_{2}^{3} - 31T_{2}^{2} + 108T_{2} + 84 \)
|
|
\( T_{7}^{5} - 24T_{7}^{4} - 607T_{7}^{3} + 17888T_{7}^{2} - 94879T_{7} - 134724 \)
|
|
\( T_{29}^{5} + 251T_{29}^{4} - 28633T_{29}^{3} - 4187745T_{29}^{2} + 294904245T_{29} + 5895839025 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{5} + 2 T^{4} + \cdots + 84 \)
|
| $3$ |
\( T^{5} \)
|
| $5$ |
\( T^{5} \)
|
| $7$ |
\( T^{5} - 24 T^{4} + \cdots - 134724 \)
|
| $11$ |
\( (T + 11)^{5} \)
|
| $13$ |
\( T^{5} - 111 T^{4} + \cdots + 3550561 \)
|
| $17$ |
\( T^{5} + \cdots + 1635498648 \)
|
| $19$ |
\( T^{5} + \cdots + 1257816875 \)
|
| $23$ |
\( T^{5} + \cdots - 10940490939 \)
|
| $29$ |
\( T^{5} + \cdots + 5895839025 \)
|
| $31$ |
\( T^{5} + \cdots + 1327232025 \)
|
| $37$ |
\( T^{5} + \cdots + 8709104588 \)
|
| $41$ |
\( T^{5} - 462 T^{4} + \cdots - 932789172 \)
|
| $43$ |
\( T^{5} + \cdots + 773004257072 \)
|
| $47$ |
\( T^{5} + \cdots + 9032023076832 \)
|
| $53$ |
\( T^{5} + \cdots + 7227253571502 \)
|
| $59$ |
\( T^{5} + \cdots - 178871706300 \)
|
| $61$ |
\( T^{5} + \cdots - 1242903344018 \)
|
| $67$ |
\( T^{5} + \cdots + 2110237935616 \)
|
| $71$ |
\( T^{5} + \cdots + 32394319745136 \)
|
| $73$ |
\( T^{5} + \cdots + 410382177016 \)
|
| $79$ |
\( T^{5} + \cdots + 426963412494900 \)
|
| $83$ |
\( T^{5} + \cdots + 2375288492493 \)
|
| $89$ |
\( T^{5} + \cdots + 26515175239875 \)
|
| $97$ |
\( T^{5} + \cdots + 109372688175233 \)
|
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