Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [5950,2,Mod(1,5950)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(5950, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("5950.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 5950 = 2 \cdot 5^{2} \cdot 7 \cdot 17 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 5950.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: | \(47.5109892027\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | 4.4.10273.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - 2x^{3} - 5x^{2} + x + 2 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 1 \) |
| 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 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
\( x^{4} - 2x^{3} - 5x^{2} + x + 2 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{3} - 2\nu^{2} - 4\nu \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - 3\nu^{2} - 2\nu + 3 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( -\beta_{3} + \beta_{2} + 2\beta _1 + 3 \)
|
| \(\nu^{3}\) | \(=\) |
\( -2\beta_{3} + 3\beta_{2} + 8\beta _1 + 6 \)
|
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 |
|
1.00000 | −2.67708 | 1.00000 | 0 | −2.67708 | −1.00000 | 1.00000 | 4.16678 | 0 | ||||||||||||||||||||||||||||||
| 1.2 | 1.00000 | −2.52331 | 1.00000 | 0 | −2.52331 | −1.00000 | 1.00000 | 3.36711 | 0 | |||||||||||||||||||||||||||||||
| 1.3 | 1.00000 | 0.306978 | 1.00000 | 0 | 0.306978 | −1.00000 | 1.00000 | −2.90576 | 0 | |||||||||||||||||||||||||||||||
| 1.4 | 1.00000 | 2.89342 | 1.00000 | 0 | 2.89342 | −1.00000 | 1.00000 | 5.37188 | 0 | |||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(5\) | \(1\) |
| \(7\) | \(1\) |
| \(17\) | \(1\) |
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 | 5950.2.a.bq | yes | 4 |
| 5.b | even | 2 | 1 | 5950.2.a.bp | ✓ | 4 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 5950.2.a.bp | ✓ | 4 | 5.b | even | 2 | 1 | |
| 5950.2.a.bq | yes | 4 | 1.a | even | 1 | 1 | trivial |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(5950))\):
|
\( T_{3}^{4} + 2T_{3}^{3} - 9T_{3}^{2} - 17T_{3} + 6 \)
|
|
\( T_{11}^{4} - 6T_{11}^{3} + 7T_{11}^{2} + T_{11} - 1 \)
|
|
\( T_{13}^{4} - 3T_{13}^{3} - 24T_{13}^{2} + 55T_{13} + 102 \)
|
|
\( T_{19}^{4} + 4T_{19}^{3} - 55T_{19}^{2} - 137T_{19} + 183 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T - 1)^{4} \)
|
| $3$ |
\( T^{4} + 2 T^{3} + \cdots + 6 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( (T + 1)^{4} \)
|
| $11$ |
\( T^{4} - 6 T^{3} + \cdots - 1 \)
|
| $13$ |
\( T^{4} - 3 T^{3} + \cdots + 102 \)
|
| $17$ |
\( (T + 1)^{4} \)
|
| $19$ |
\( T^{4} + 4 T^{3} + \cdots + 183 \)
|
| $23$ |
\( T^{4} - 8 T^{3} + \cdots + 18 \)
|
| $29$ |
\( T^{4} + 2 T^{3} + \cdots + 1053 \)
|
| $31$ |
\( T^{4} - 7 T^{3} + \cdots + 909 \)
|
| $37$ |
\( T^{4} - 7 T^{3} + \cdots + 482 \)
|
| $41$ |
\( T^{4} - 5 T^{3} + \cdots + 5097 \)
|
| $43$ |
\( T^{4} + 6 T^{3} + \cdots + 162 \)
|
| $47$ |
\( T^{4} + 5 T^{3} + \cdots + 864 \)
|
| $53$ |
\( T^{4} + 13 T^{3} + \cdots - 612 \)
|
| $59$ |
\( T^{4} + 2 T^{3} + \cdots + 1053 \)
|
| $61$ |
\( T^{4} + 14 T^{3} + \cdots - 8 \)
|
| $67$ |
\( T^{4} - 17 T^{3} + \cdots + 136 \)
|
| $71$ |
\( T^{4} - 12 T^{3} + \cdots - 1572 \)
|
| $73$ |
\( T^{4} + 10 T^{3} + \cdots + 453 \)
|
| $79$ |
\( T^{4} - 27 T^{3} + \cdots + 834 \)
|
| $83$ |
\( T^{4} + 19 T^{3} + \cdots - 17361 \)
|
| $89$ |
\( T^{4} - 35 T^{3} + \cdots - 498 \)
|
| $97$ |
\( T^{4} - 2 T^{3} + \cdots + 45387 \)
|
| show more | |
| show less |