Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [1210,4,Mod(1,1210)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1210, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("1210.1");
S:= CuspForms(chi, 4);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 1210 = 2 \cdot 5 \cdot 11^{2} \) |
| Weight: | \( k \) | \(=\) | \( 4 \) |
| Character orbit: | \([\chi]\) | \(=\) | 1210.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: | \(71.3923111069\) |
| Analytic rank: | \(0\) |
| Dimension: | \(2\) |
| Coefficient field: | \(\Q(\sqrt{31}) \) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{2} - 31 \)
|
| 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 \(\beta = \sqrt{31}\). 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 |
|
−2.00000 | −5.56776 | 4.00000 | 5.00000 | 11.1355 | 23.5678 | −8.00000 | 4.00000 | −10.0000 | ||||||||||||||||||||||||
| 1.2 | −2.00000 | 5.56776 | 4.00000 | 5.00000 | −11.1355 | 12.4322 | −8.00000 | 4.00000 | −10.0000 | |||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \( +1 \) |
| \(5\) | \( -1 \) |
| \(11\) | \( -1 \) |
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 | 1210.4.a.o | ✓ | 2 |
| 11.b | odd | 2 | 1 | 1210.4.a.q | yes | 2 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 1210.4.a.o | ✓ | 2 | 1.a | even | 1 | 1 | trivial |
| 1210.4.a.q | yes | 2 | 11.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 \(S_{4}^{\mathrm{new}}(\Gamma_0(1210))\):
|
\( T_{3}^{2} - 31 \)
|
|
\( T_{7}^{2} - 36T_{7} + 293 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T + 2)^{2} \)
|
| $3$ |
\( T^{2} - 31 \)
|
| $5$ |
\( (T - 5)^{2} \)
|
| $7$ |
\( T^{2} - 36T + 293 \)
|
| $11$ |
\( T^{2} \)
|
| $13$ |
\( T^{2} + 8T - 1100 \)
|
| $17$ |
\( T^{2} - 128T + 2112 \)
|
| $19$ |
\( T^{2} - 36T - 12076 \)
|
| $23$ |
\( T^{2} + 88T - 13068 \)
|
| $29$ |
\( T^{2} - 252T + 11412 \)
|
| $31$ |
\( T^{2} - 140T + 4776 \)
|
| $37$ |
\( T^{2} + 56T - 17072 \)
|
| $41$ |
\( T^{2} - 222T + 7857 \)
|
| $43$ |
\( T^{2} + 64T - 2727 \)
|
| $47$ |
\( T^{2} + 76T - 278331 \)
|
| $53$ |
\( T^{2} - 96T - 320220 \)
|
| $59$ |
\( T^{2} + 676T - 4920 \)
|
| $61$ |
\( T^{2} + 570T - 70675 \)
|
| $67$ |
\( T^{2} - 1400 T + 359025 \)
|
| $71$ |
\( T^{2} - 692T + 113640 \)
|
| $73$ |
\( T^{2} + 96T - 10096 \)
|
| $79$ |
\( T^{2} - 360T - 71884 \)
|
| $83$ |
\( T^{2} - 88T - 521964 \)
|
| $89$ |
\( T^{2} + 446T - 212655 \)
|
| $97$ |
\( T^{2} - 1808 T + 608772 \)
|
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