Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [134,2,Mod(29,134)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(134, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([4]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("134.29");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 134 = 2 \cdot 67 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 134.c (of order \(3\), degree \(2\), 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: | \(1.06999538709\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Relative dimension: | \(2\) over \(\Q(\zeta_{3})\) |
| Coefficient field: | \(\Q(\sqrt{-3}, \sqrt{-7})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - x^{3} - x^{2} - 2x + 4 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 3 \) |
| 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
\( x^{4} - x^{3} - x^{2} - 2x + 4 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( \nu^{3} + \nu^{2} - \nu - 4 ) / 2 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( -\nu^{3} + \nu^{2} + 3\nu + 2 ) / 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( 3\nu^{3} + \nu^{2} + \nu - 8 ) / 2 \)
|
| \(\nu\) | \(=\) |
\( ( \beta_{3} + \beta_{2} - 2\beta _1 - 1 ) / 3 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( -\beta_{3} + 2\beta_{2} + 5\beta _1 + 4 ) / 3 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( 2\beta_{3} - \beta_{2} - \beta _1 + 7 ) / 3 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/134\mathbb{Z}\right)^\times\).
| \(n\) | \(69\) |
| \(\chi(n)\) | \(-1 - \beta_{1}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.1 |
|
−0.500000 | + | 0.866025i | −1.79129 | −0.500000 | − | 0.866025i | −1.00000 | 0.895644 | − | 1.55130i | −1.39564 | − | 2.41733i | 1.00000 | 0.208712 | 0.500000 | − | 0.866025i | ||||||||||||||||||||
| 29.2 | −0.500000 | + | 0.866025i | 2.79129 | −0.500000 | − | 0.866025i | −1.00000 | −1.39564 | + | 2.41733i | 0.895644 | + | 1.55130i | 1.00000 | 4.79129 | 0.500000 | − | 0.866025i | |||||||||||||||||||||
| 37.1 | −0.500000 | − | 0.866025i | −1.79129 | −0.500000 | + | 0.866025i | −1.00000 | 0.895644 | + | 1.55130i | −1.39564 | + | 2.41733i | 1.00000 | 0.208712 | 0.500000 | + | 0.866025i | |||||||||||||||||||||
| 37.2 | −0.500000 | − | 0.866025i | 2.79129 | −0.500000 | + | 0.866025i | −1.00000 | −1.39564 | − | 2.41733i | 0.895644 | − | 1.55130i | 1.00000 | 4.79129 | 0.500000 | + | 0.866025i | |||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 67.c | even | 3 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 134.2.c.b | ✓ | 4 |
| 3.b | odd | 2 | 1 | 1206.2.h.c | 4 | ||
| 4.b | odd | 2 | 1 | 1072.2.i.c | 4 | ||
| 67.c | even | 3 | 1 | inner | 134.2.c.b | ✓ | 4 |
| 67.c | even | 3 | 1 | 8978.2.a.f | 2 | ||
| 67.d | odd | 6 | 1 | 8978.2.a.c | 2 | ||
| 201.g | odd | 6 | 1 | 1206.2.h.c | 4 | ||
| 268.g | odd | 6 | 1 | 1072.2.i.c | 4 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 134.2.c.b | ✓ | 4 | 1.a | even | 1 | 1 | trivial |
| 134.2.c.b | ✓ | 4 | 67.c | even | 3 | 1 | inner |
| 1072.2.i.c | 4 | 4.b | odd | 2 | 1 | ||
| 1072.2.i.c | 4 | 268.g | odd | 6 | 1 | ||
| 1206.2.h.c | 4 | 3.b | odd | 2 | 1 | ||
| 1206.2.h.c | 4 | 201.g | odd | 6 | 1 | ||
| 8978.2.a.c | 2 | 67.d | odd | 6 | 1 | ||
| 8978.2.a.f | 2 | 67.c | even | 3 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3}^{2} - T_{3} - 5 \)
acting on \(S_{2}^{\mathrm{new}}(134, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T^{2} + T + 1)^{2} \)
|
| $3$ |
\( (T^{2} - T - 5)^{2} \)
|
| $5$ |
\( (T + 1)^{4} \)
|
| $7$ |
\( T^{4} + T^{3} + \cdots + 25 \)
|
| $11$ |
\( (T^{2} + 5 T + 25)^{2} \)
|
| $13$ |
\( T^{4} + 3 T^{3} + \cdots + 9 \)
|
| $17$ |
\( T^{4} + 21T^{2} + 441 \)
|
| $19$ |
\( T^{4} + 2 T^{3} + \cdots + 400 \)
|
| $23$ |
\( T^{4} + 6 T^{3} + \cdots + 144 \)
|
| $29$ |
\( (T^{2} - T + 1)^{2} \)
|
| $31$ |
\( T^{4} + 13 T^{3} + \cdots + 1369 \)
|
| $37$ |
\( T^{4} - T^{3} + \cdots + 25 \)
|
| $41$ |
\( T^{4} + 4 T^{3} + \cdots + 289 \)
|
| $43$ |
\( (T^{2} - 11 T - 17)^{2} \)
|
| $47$ |
\( T^{4} + 84T^{2} + 7056 \)
|
| $53$ |
\( (T^{2} - 3 T - 45)^{2} \)
|
| $59$ |
\( (T^{2} - 8 T - 5)^{2} \)
|
| $61$ |
\( T^{4} - 5 T^{3} + \cdots + 1681 \)
|
| $67$ |
\( T^{4} + 4 T^{3} + \cdots + 4489 \)
|
| $71$ |
\( T^{4} + 5 T^{3} + \cdots + 15625 \)
|
| $73$ |
\( T^{4} \)
|
| $79$ |
\( T^{4} - 19 T^{3} + \cdots + 1849 \)
|
| $83$ |
\( (T^{2} + 12 T + 144)^{2} \)
|
| $89$ |
\( (T^{2} + 9 T + 15)^{2} \)
|
| $97$ |
\( T^{4} - 25 T^{3} + \cdots + 22801 \)
|
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