Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [112,10,Mod(1,112)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(112, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 10, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("112.1");
S:= CuspForms(chi, 10);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 112 = 2^{4} \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 10 \) |
| Character orbit: | \([\chi]\) | \(=\) | 112.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: | \(57.6840136504\) |
| Analytic rank: | \(0\) |
| Dimension: | \(3\) |
| Coefficient field: | \(\mathbb{Q}[x]/(x^{3} - \cdots)\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{3} - 823x - 4578 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 2^{6}\cdot 3 \) |
| Twist minimal: | no (minimal twist has level 56) |
| 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 \(1,\beta_1,\beta_2\) 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
\( x^{3} - 823x - 4578 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( 2\nu^{2} + 12\nu - 1099 ) / 5 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( -8\nu^{2} + 192\nu + 4391 ) / 5 \)
|
| \(\nu\) | \(=\) |
\( ( \beta_{2} + 4\beta _1 + 1 ) / 48 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( -\beta_{2} + 16\beta _1 + 4395 ) / 8 \)
|
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 | −189.265 | 0 | −729.944 | 0 | 2401.00 | 0 | 16138.2 | 0 | |||||||||||||||||||||||||||
| 1.2 | 0 | 7.32110 | 0 | 1191.17 | 0 | 2401.00 | 0 | −19629.4 | 0 | ||||||||||||||||||||||||||||
| 1.3 | 0 | 273.944 | 0 | −187.226 | 0 | 2401.00 | 0 | 55362.2 | 0 | ||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \( +1 \) |
| \(7\) | \( -1 \) |
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 | 112.10.a.i | 3 | |
| 4.b | odd | 2 | 1 | 56.10.a.a | ✓ | 3 | |
| 28.d | even | 2 | 1 | 392.10.a.d | 3 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 56.10.a.a | ✓ | 3 | 4.b | odd | 2 | 1 | |
| 112.10.a.i | 3 | 1.a | even | 1 | 1 | trivial | |
| 392.10.a.d | 3 | 28.d | even | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3}^{3} - 92T_{3}^{2} - 51228T_{3} + 379584 \)
acting on \(S_{10}^{\mathrm{new}}(\Gamma_0(112))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{3} \)
|
| $3$ |
\( T^{3} - 92 T^{2} + \cdots + 379584 \)
|
| $5$ |
\( T^{3} - 274 T^{2} + \cdots - 162790400 \)
|
| $7$ |
\( (T - 2401)^{3} \)
|
| $11$ |
\( T^{3} + \cdots + 3858186796800 \)
|
| $13$ |
\( T^{3} + \cdots + 467510359287776 \)
|
| $17$ |
\( T^{3} + \cdots + 23\!\cdots\!32 \)
|
| $19$ |
\( T^{3} + \cdots - 36\!\cdots\!88 \)
|
| $23$ |
\( T^{3} + \cdots + 83\!\cdots\!52 \)
|
| $29$ |
\( T^{3} + \cdots + 28\!\cdots\!24 \)
|
| $31$ |
\( T^{3} + \cdots + 35\!\cdots\!40 \)
|
| $37$ |
\( T^{3} + \cdots - 33\!\cdots\!76 \)
|
| $41$ |
\( T^{3} + \cdots - 99\!\cdots\!68 \)
|
| $43$ |
\( T^{3} + \cdots + 45\!\cdots\!16 \)
|
| $47$ |
\( T^{3} + \cdots + 24\!\cdots\!16 \)
|
| $53$ |
\( T^{3} + \cdots + 17\!\cdots\!84 \)
|
| $59$ |
\( T^{3} + \cdots - 98\!\cdots\!56 \)
|
| $61$ |
\( T^{3} + \cdots - 17\!\cdots\!52 \)
|
| $67$ |
\( T^{3} + \cdots + 82\!\cdots\!92 \)
|
| $71$ |
\( T^{3} + \cdots + 54\!\cdots\!36 \)
|
| $73$ |
\( T^{3} + \cdots - 11\!\cdots\!60 \)
|
| $79$ |
\( T^{3} + \cdots + 15\!\cdots\!44 \)
|
| $83$ |
\( T^{3} + \cdots - 27\!\cdots\!16 \)
|
| $89$ |
\( T^{3} + \cdots + 18\!\cdots\!04 \)
|
| $97$ |
\( T^{3} + \cdots + 92\!\cdots\!28 \)
|
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