Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [8619,2,Mod(1,8619)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(8619, 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("8619.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 8619 = 3 \cdot 13^{2} \cdot 17 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 8619.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: | \(68.8230615021\) |
| Analytic rank: | \(0\) |
| Dimension: | \(6\) |
| Coefficient field: | 6.6.83831632.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{6} - 2x^{5} - 9x^{4} + 12x^{3} + 23x^{2} - 8x - 5 \)
|
| Coefficient ring: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 2 \) |
| Twist minimal: | no (minimal twist has level 663) |
| 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
\( x^{6} - 2x^{5} - 9x^{4} + 12x^{3} + 23x^{2} - 8x - 5 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - \nu - 3 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - \nu^{2} - 5\nu + 1 \)
|
| \(\beta_{4}\) | \(=\) |
\( \nu^{4} - 7\nu^{2} - 3\nu + 4 \)
|
| \(\beta_{5}\) | \(=\) |
\( \nu^{5} - \nu^{4} - 7\nu^{3} + 4\nu^{2} + 8\nu - 3 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + \beta _1 + 3 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} + \beta_{2} + 6\beta _1 + 2 \)
|
| \(\nu^{4}\) | \(=\) |
\( \beta_{4} + 7\beta_{2} + 10\beta _1 + 17 \)
|
| \(\nu^{5}\) | \(=\) |
\( \beta_{5} + \beta_{4} + 7\beta_{3} + 10\beta_{2} + 40\beta _1 + 22 \)
|
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 |
|
−2.76621 | −1.00000 | 5.65190 | 2.57534 | 2.76621 | −4.98427 | −10.1019 | 1.00000 | −7.12393 | ||||||||||||||||||||||||||||||||||||
| 1.2 | −2.63163 | −1.00000 | 4.92548 | −3.11716 | 2.63163 | 3.56550 | −7.69877 | 1.00000 | 8.20321 | |||||||||||||||||||||||||||||||||||||
| 1.3 | −0.608418 | −1.00000 | −1.62983 | −3.51768 | 0.608418 | −1.71784 | 2.20845 | 1.00000 | 2.14022 | |||||||||||||||||||||||||||||||||||||
| 1.4 | 0.351075 | −1.00000 | −1.87675 | 1.67997 | −0.351075 | 5.03321 | −1.36103 | 1.00000 | 0.589796 | |||||||||||||||||||||||||||||||||||||
| 1.5 | 1.47472 | −1.00000 | 0.174811 | −1.42017 | −1.47472 | −4.64722 | −2.69165 | 1.00000 | −2.09435 | |||||||||||||||||||||||||||||||||||||
| 1.6 | 2.18046 | −1.00000 | 2.75439 | 3.79969 | −2.18046 | 0.750623 | 1.64491 | 1.00000 | 8.28506 | |||||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(3\) | \(1\) |
| \(13\) | \(1\) |
| \(17\) | \(-1\) |
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 | 8619.2.a.z | 6 | |
| 13.b | even | 2 | 1 | 663.2.a.h | ✓ | 6 | |
| 39.d | odd | 2 | 1 | 1989.2.a.o | 6 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 663.2.a.h | ✓ | 6 | 13.b | even | 2 | 1 | |
| 1989.2.a.o | 6 | 39.d | odd | 2 | 1 | ||
| 8619.2.a.z | 6 | 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 \(S_{2}^{\mathrm{new}}(\Gamma_0(8619))\):
|
\( T_{2}^{6} + 2T_{2}^{5} - 9T_{2}^{4} - 12T_{2}^{3} + 23T_{2}^{2} + 8T_{2} - 5 \)
|
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\( T_{5}^{6} - 24T_{5}^{4} + 160T_{5}^{2} - 16T_{5} - 256 \)
|
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\( T_{7}^{6} + 2T_{7}^{5} - 42T_{7}^{4} - 68T_{7}^{3} + 444T_{7}^{2} + 436T_{7} - 536 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{6} + 2 T^{5} + \cdots - 5 \)
|
| $3$ |
\( (T + 1)^{6} \)
|
| $5$ |
\( T^{6} - 24 T^{4} + \cdots - 256 \)
|
| $7$ |
\( T^{6} + 2 T^{5} + \cdots - 536 \)
|
| $11$ |
\( T^{6} - 12 T^{5} + \cdots + 96 \)
|
| $13$ |
\( T^{6} \)
|
| $17$ |
\( (T - 1)^{6} \)
|
| $19$ |
\( T^{6} - 64 T^{4} + \cdots - 2048 \)
|
| $23$ |
\( T^{6} - 88 T^{4} + \cdots - 2304 \)
|
| $29$ |
\( T^{6} - 12 T^{5} + \cdots - 7584 \)
|
| $31$ |
\( T^{6} - 14 T^{5} + \cdots + 2360 \)
|
| $37$ |
\( T^{6} + 6 T^{5} + \cdots - 10000 \)
|
| $41$ |
\( T^{6} - 8 T^{5} + \cdots - 45120 \)
|
| $43$ |
\( T^{6} - 8 T^{5} + \cdots - 192 \)
|
| $47$ |
\( T^{6} + 2 T^{5} + \cdots - 336032 \)
|
| $53$ |
\( T^{6} - 204 T^{4} + \cdots - 224320 \)
|
| $59$ |
\( T^{6} - 18 T^{5} + \cdots + 85984 \)
|
| $61$ |
\( T^{6} - 20 T^{5} + \cdots + 1472 \)
|
| $67$ |
\( T^{6} + 20 T^{5} + \cdots + 15360 \)
|
| $71$ |
\( T^{6} - 8 T^{5} + \cdots - 1957664 \)
|
| $73$ |
\( T^{6} + 10 T^{5} + \cdots + 17872 \)
|
| $79$ |
\( T^{6} + 24 T^{5} + \cdots + 512 \)
|
| $83$ |
\( T^{6} - 10 T^{5} + \cdots - 6288 \)
|
| $89$ |
\( T^{6} + 6 T^{5} + \cdots - 58104 \)
|
| $97$ |
\( T^{6} + 14 T^{5} + \cdots + 295168 \)
|
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