Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [294,8,Mod(67,294)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(294, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([0, 4]))
N = Newforms(chi, 8, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("294.67");
S:= CuspForms(chi, 8);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 294 = 2 \cdot 3 \cdot 7^{2} \) |
| Weight: | \( k \) | \(=\) | \( 8 \) |
| Character orbit: | \([\chi]\) | \(=\) | 294.e (of order \(3\), degree \(2\), not minimal) |
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: | no |
| Analytic conductor: | \(91.8411974923\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Relative dimension: | \(2\) over \(\Q(\zeta_{3})\) |
| Coefficient field: | \(\Q(\sqrt{-3}, \sqrt{6001})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - x^{3} + 1501x^{2} + 1500x + 2250000 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 2^{6} \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{3}]$ |
$q$-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
\( x^{4} - x^{3} + 1501x^{2} + 1500x + 2250000 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( -\nu^{3} + 1501\nu^{2} - 1501\nu + 2250000 ) / 2251500 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{3} - 1501\nu^{2} + 4504501\nu - 2250000 ) / 562875 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( 8\nu^{3} + 18004 ) / 1501 \)
|
| \(\nu\) | \(=\) |
\( ( \beta_{2} + 4\beta_1 ) / 8 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( \beta_{3} + \beta_{2} + 12004\beta _1 - 12004 ) / 8 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( 1501\beta_{3} - 18004 ) / 8 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/294\mathbb{Z}\right)^\times\).
| \(n\) | \(197\) | \(199\) |
| \(\chi(n)\) | \(1\) | \(-\beta_{1}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 67.1 |
|
−4.00000 | − | 6.92820i | 13.5000 | − | 23.3827i | −32.0000 | + | 55.4256i | −226.932 | − | 393.058i | −216.000 | 0 | 512.000 | −364.500 | − | 631.333i | −1815.46 | + | 3144.47i | ||||||||||||||||||
| 67.2 | −4.00000 | − | 6.92820i | 13.5000 | − | 23.3827i | −32.0000 | + | 55.4256i | 82.9322 | + | 143.643i | −216.000 | 0 | 512.000 | −364.500 | − | 631.333i | 663.458 | − | 1149.14i | |||||||||||||||||||
| 79.1 | −4.00000 | + | 6.92820i | 13.5000 | + | 23.3827i | −32.0000 | − | 55.4256i | −226.932 | + | 393.058i | −216.000 | 0 | 512.000 | −364.500 | + | 631.333i | −1815.46 | − | 3144.47i | |||||||||||||||||||
| 79.2 | −4.00000 | + | 6.92820i | 13.5000 | + | 23.3827i | −32.0000 | − | 55.4256i | 82.9322 | − | 143.643i | −216.000 | 0 | 512.000 | −364.500 | + | 631.333i | 663.458 | + | 1149.14i | |||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 7.c | even | 3 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 294.8.e.u | 4 | |
| 7.b | odd | 2 | 1 | 294.8.e.s | 4 | ||
| 7.c | even | 3 | 1 | 294.8.a.r | ✓ | 2 | |
| 7.c | even | 3 | 1 | inner | 294.8.e.u | 4 | |
| 7.d | odd | 6 | 1 | 294.8.a.u | yes | 2 | |
| 7.d | odd | 6 | 1 | 294.8.e.s | 4 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 294.8.a.r | ✓ | 2 | 7.c | even | 3 | 1 | |
| 294.8.a.u | yes | 2 | 7.d | odd | 6 | 1 | |
| 294.8.e.s | 4 | 7.b | odd | 2 | 1 | ||
| 294.8.e.s | 4 | 7.d | odd | 6 | 1 | ||
| 294.8.e.u | 4 | 1.a | even | 1 | 1 | trivial | |
| 294.8.e.u | 4 | 7.c | even | 3 | 1 | inner | |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{5}^{4} + 288T_{5}^{3} + 158224T_{5}^{2} - 21680640T_{5} + 5667078400 \)
acting on \(S_{8}^{\mathrm{new}}(294, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T^{2} + 8 T + 64)^{2} \)
|
| $3$ |
\( (T^{2} - 27 T + 729)^{2} \)
|
| $5$ |
\( T^{4} + \cdots + 5667078400 \)
|
| $7$ |
\( T^{4} \)
|
| $11$ |
\( T^{4} + \cdots + 967613097990400 \)
|
| $13$ |
\( (T^{2} - 8352 T - 33353488)^{2} \)
|
| $17$ |
\( T^{4} + \cdots + 212030875238400 \)
|
| $19$ |
\( T^{4} + \cdots + 27\!\cdots\!44 \)
|
| $23$ |
\( T^{4} + \cdots + 22\!\cdots\!00 \)
|
| $29$ |
\( (T^{2} - 92596 T - 25854760796)^{2} \)
|
| $31$ |
\( T^{4} + \cdots + 20\!\cdots\!24 \)
|
| $37$ |
\( T^{4} + \cdots + 31\!\cdots\!36 \)
|
| $41$ |
\( (T^{2} + 256320 T - 18140774400)^{2} \)
|
| $43$ |
\( (T^{2} - 459128 T - 117654261488)^{2} \)
|
| $47$ |
\( T^{4} + \cdots + 71\!\cdots\!24 \)
|
| $53$ |
\( T^{4} + \cdots + 38\!\cdots\!00 \)
|
| $59$ |
\( T^{4} + \cdots + 64\!\cdots\!24 \)
|
| $61$ |
\( T^{4} + \cdots + 66\!\cdots\!64 \)
|
| $67$ |
\( T^{4} + \cdots + 14\!\cdots\!36 \)
|
| $71$ |
\( (T^{2} + \cdots - 15313938458432)^{2} \)
|
| $73$ |
\( T^{4} + \cdots + 37\!\cdots\!00 \)
|
| $79$ |
\( T^{4} + \cdots + 49\!\cdots\!84 \)
|
| $83$ |
\( (T^{2} + \cdots + 55241882324496)^{2} \)
|
| $89$ |
\( T^{4} + \cdots + 10\!\cdots\!04 \)
|
| $97$ |
\( (T^{2} + \cdots + 50036156687552)^{2} \)
|
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