Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [230,6,Mod(1,230)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(230, 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("230.1");
S:= CuspForms(chi, 6);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 230 = 2 \cdot 5 \cdot 23 \) |
| Weight: | \( k \) | \(=\) | \( 6 \) |
| Character orbit: | \([\chi]\) | \(=\) | 230.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: | \(36.8882785570\) |
| Analytic rank: | \(1\) |
| Dimension: | \(2\) |
| Coefficient field: | \(\Q(\sqrt{2}) \) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{2} - 2 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{7}]\) |
| Coefficient ring index: | \( 2 \) |
| 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 \(\beta = 2\sqrt{2}\). 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 | −13.9706 | 16.0000 | −25.0000 | 55.8823 | 5.68124 | −64.0000 | −47.8234 | 100.000 | ||||||||||||||||||||||||
| 1.2 | −4.00000 | 19.9706 | 16.0000 | −25.0000 | −79.8823 | −169.681 | −64.0000 | 155.823 | 100.000 | |||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \( +1 \) |
| \(5\) | \( +1 \) |
| \(23\) | \( +1 \) |
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 | 230.6.a.b | ✓ | 2 |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 230.6.a.b | ✓ | 2 | 1.a | even | 1 | 1 | trivial |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3}^{2} - 6T_{3} - 279 \)
acting on \(S_{6}^{\mathrm{new}}(\Gamma_0(230))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T + 4)^{2} \)
|
| $3$ |
\( T^{2} - 6T - 279 \)
|
| $5$ |
\( (T + 25)^{2} \)
|
| $7$ |
\( T^{2} + 164T - 964 \)
|
| $11$ |
\( T^{2} - 488T + 43336 \)
|
| $13$ |
\( T^{2} - 738T + 106393 \)
|
| $17$ |
\( T^{2} - 1112T - 30352 \)
|
| $19$ |
\( T^{2} + 1584 T + 481464 \)
|
| $23$ |
\( (T + 529)^{2} \)
|
| $29$ |
\( T^{2} + 2158 T - 33247567 \)
|
| $31$ |
\( T^{2} - 3418 T - 48408031 \)
|
| $37$ |
\( T^{2} + 152T + 3464 \)
|
| $41$ |
\( T^{2} + 31482 T + 237235849 \)
|
| $43$ |
\( T^{2} - 468T - 308196 \)
|
| $47$ |
\( T^{2} - 10062 T - 33009039 \)
|
| $53$ |
\( T^{2} - 3380 T - 256334812 \)
|
| $59$ |
\( T^{2} + 42512 T - 375613664 \)
|
| $61$ |
\( T^{2} + 44472 T + 264688648 \)
|
| $67$ |
\( T^{2} + \cdots + 3527283128 \)
|
| $71$ |
\( T^{2} + 36126 T + 277583257 \)
|
| $73$ |
\( T^{2} + 39514 T - 556133983 \)
|
| $79$ |
\( T^{2} + \cdots - 4014464456 \)
|
| $83$ |
\( T^{2} + \cdots + 3075302432 \)
|
| $89$ |
\( T^{2} + 4356 T - 440349764 \)
|
| $97$ |
\( T^{2} + \cdots + 4764185692 \)
|
| show more | |
| show less |