Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [270,6,Mod(1,270)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(270, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0]))
N = Newforms(chi, 6, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("270.1");
S:= CuspForms(chi, 6);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 270 = 2 \cdot 3^{3} \cdot 5 \) |
| Weight: | \( k \) | \(=\) | \( 6 \) |
| Character orbit: | \([\chi]\) | \(=\) | 270.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: | \(43.3036313495\) |
| Analytic rank: | \(0\) |
| Dimension: | \(2\) |
| Coefficient field: | \(\Q(\sqrt{9681}) \) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{2} - x - 2420 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{7}]\) |
| Coefficient ring index: | \( 3 \) |
| 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 \(\beta = \frac{1}{2}(1 + 3\sqrt{9681})\). We also show the integral \(q\)-expansion of the trace form.
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 |
|
−4.00000 | 0 | 16.0000 | −25.0000 | 0 | −63.0881 | −64.0000 | 0 | 100.000 | ||||||||||||||||||||||||
| 1.2 | −4.00000 | 0 | 16.0000 | −25.0000 | 0 | 232.088 | −64.0000 | 0 | 100.000 | |||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \( +1 \) |
| \(3\) | \( -1 \) |
| \(5\) | \( +1 \) |
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 | 270.6.a.g | ✓ | 2 |
| 3.b | odd | 2 | 1 | 270.6.a.p | yes | 2 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 270.6.a.g | ✓ | 2 | 1.a | even | 1 | 1 | trivial |
| 270.6.a.p | yes | 2 | 3.b | odd | 2 | 1 | |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{6}^{\mathrm{new}}(\Gamma_0(270))\):
|
\( T_{7}^{2} - 169T_{7} - 14642 \)
|
|
\( T_{11}^{2} + 327T_{11} + 4950 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T + 4)^{2} \)
|
| $3$ |
\( T^{2} \)
|
| $5$ |
\( (T + 25)^{2} \)
|
| $7$ |
\( T^{2} - 169T - 14642 \)
|
| $11$ |
\( T^{2} + 327T + 4950 \)
|
| $13$ |
\( T^{2} - 634T - 248027 \)
|
| $17$ |
\( T^{2} - 303 T - 3658248 \)
|
| $19$ |
\( T^{2} + 353 T - 3650048 \)
|
| $23$ |
\( T^{2} + 1041 T + 249138 \)
|
| $29$ |
\( T^{2} + 4005 T + 1374354 \)
|
| $31$ |
\( T^{2} - 2773 T + 1900600 \)
|
| $37$ |
\( T^{2} - 1075T + 92866 \)
|
| $41$ |
\( T^{2} + 3990 T - 34443864 \)
|
| $43$ |
\( T^{2} - 7621 T - 22096052 \)
|
| $47$ |
\( T^{2} + 12801 T + 40421844 \)
|
| $53$ |
\( T^{2} - 7482 T - 729720 \)
|
| $59$ |
\( T^{2} + 29436 T - 369235872 \)
|
| $61$ |
\( T^{2} - 54073 T + 697841530 \)
|
| $67$ |
\( T^{2} + \cdots - 1366172324 \)
|
| $71$ |
\( T^{2} - 71334 T - 930573360 \)
|
| $73$ |
\( T^{2} - 42565 T - 17747834 \)
|
| $79$ |
\( T^{2} + \cdots + 6832014541 \)
|
| $83$ |
\( T^{2} + \cdots + 3844057932 \)
|
| $89$ |
\( T^{2} + \cdots - 2629182240 \)
|
| $97$ |
\( T^{2} + \cdots + 1695148690 \)
|
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