Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [384,8,Mod(1,384)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(384, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 8, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("384.1");
S:= CuspForms(chi, 8);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 384 = 2^{7} \cdot 3 \) |
| Weight: | \( k \) | \(=\) | \( 8 \) |
| Character orbit: | \([\chi]\) | \(=\) | 384.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: | \(119.955849786\) |
| Analytic rank: | \(1\) |
| Dimension: | \(2\) |
| Coefficient field: | \(\Q(\sqrt{366}) \) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{2} - 366 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 2^{3} \) |
| 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 \(\beta = 8\sqrt{366}\). 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 |
|
0 | −27.0000 | 0 | −65.0490 | 0 | 275.245 | 0 | 729.000 | 0 | ||||||||||||||||||||||||
| 1.2 | 0 | −27.0000 | 0 | 241.049 | 0 | −1255.25 | 0 | 729.000 | 0 | |||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(3\) | \(1\) |
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 | 384.8.a.f | yes | 2 |
| 4.b | odd | 2 | 1 | 384.8.a.h | yes | 2 | |
| 8.b | even | 2 | 1 | 384.8.a.g | yes | 2 | |
| 8.d | odd | 2 | 1 | 384.8.a.e | ✓ | 2 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 384.8.a.e | ✓ | 2 | 8.d | odd | 2 | 1 | |
| 384.8.a.f | yes | 2 | 1.a | even | 1 | 1 | trivial |
| 384.8.a.g | yes | 2 | 8.b | even | 2 | 1 | |
| 384.8.a.h | yes | 2 | 4.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 \(S_{8}^{\mathrm{new}}(\Gamma_0(384))\):
|
\( T_{5}^{2} - 176T_{5} - 15680 \)
|
|
\( T_{7}^{2} + 980T_{7} - 345500 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{2} \)
|
| $3$ |
\( (T + 27)^{2} \)
|
| $5$ |
\( T^{2} - 176T - 15680 \)
|
| $7$ |
\( T^{2} + 980T - 345500 \)
|
| $11$ |
\( T^{2} + 3128 T - 13388528 \)
|
| $13$ |
\( T^{2} + 8452 T - 66467324 \)
|
| $17$ |
\( T^{2} - 5228 T - 520207004 \)
|
| $19$ |
\( T^{2} + \cdots + 1907514112 \)
|
| $23$ |
\( T^{2} + \cdots + 2737751440 \)
|
| $29$ |
\( T^{2} + \cdots - 30676616304 \)
|
| $31$ |
\( T^{2} + \cdots - 61397210364 \)
|
| $37$ |
\( T^{2} + \cdots + 47078447716 \)
|
| $41$ |
\( T^{2} + \cdots - 253607336700 \)
|
| $43$ |
\( T^{2} + \cdots - 160477844928 \)
|
| $47$ |
\( T^{2} + \cdots - 316723044848 \)
|
| $53$ |
\( T^{2} + \cdots + 1495948838160 \)
|
| $59$ |
\( T^{2} + \cdots - 257899165040 \)
|
| $61$ |
\( T^{2} + \cdots + 1272521461540 \)
|
| $67$ |
\( T^{2} + \cdots - 1646886470768 \)
|
| $71$ |
\( T^{2} + \cdots + 540610016400 \)
|
| $73$ |
\( T^{2} + \cdots - 446446535516 \)
|
| $79$ |
\( T^{2} + \cdots - 13803646540220 \)
|
| $83$ |
\( T^{2} + \cdots - 15941282454384 \)
|
| $89$ |
\( T^{2} + \cdots + 10139019891652 \)
|
| $97$ |
\( T^{2} + \cdots - 76333350144092 \)
|
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