Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [175,10,Mod(99,175)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(175, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 0]))
N = Newforms(chi, 10, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("175.99");
S:= CuspForms(chi, 10);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 175 = 5^{2} \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 10 \) |
| Character orbit: | \([\chi]\) | \(=\) | 175.b (of order \(2\), degree \(1\), not minimal) |
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: | no |
| Analytic conductor: | \(90.1312713287\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\zeta_{8})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} + 1 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{7}]\) |
| Coefficient ring index: | \( 2^{3} \) |
| Twist minimal: | no (minimal twist has level 35) |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-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
| \(\beta_{1}\) | \(=\) |
\( \zeta_{8}^{2} \)
|
| \(\beta_{2}\) | \(=\) |
\( 2\zeta_{8}^{3} + 2\zeta_{8} \)
|
| \(\beta_{3}\) | \(=\) |
\( -2\zeta_{8}^{3} + 2\zeta_{8} \)
|
| \(\zeta_{8}\) | \(=\) |
\( ( \beta_{3} + \beta_{2} ) / 4 \)
|
| \(\zeta_{8}^{2}\) | \(=\) |
\( \beta_1 \)
|
| \(\zeta_{8}^{3}\) | \(=\) |
\( ( -\beta_{3} + \beta_{2} ) / 4 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/175\mathbb{Z}\right)^\times\).
| \(n\) | \(101\) | \(127\) |
| \(\chi(n)\) | \(1\) | \(-1\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 99.1 |
|
− | 14.8284i | 239.735i | 292.118 | 0 | 3554.89 | 2401.00i | − | 11923.8i | −37789.9 | 0 | ||||||||||||||||||||||||||||
| 99.2 | − | 9.17157i | − | 65.7351i | 427.882 | 0 | −602.894 | 2401.00i | − | 8620.20i | 15361.9 | 0 | ||||||||||||||||||||||||||||
| 99.3 | 9.17157i | 65.7351i | 427.882 | 0 | −602.894 | − | 2401.00i | 8620.20i | 15361.9 | 0 | ||||||||||||||||||||||||||||||
| 99.4 | 14.8284i | − | 239.735i | 292.118 | 0 | 3554.89 | − | 2401.00i | 11923.8i | −37789.9 | 0 | |||||||||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 5.b | even | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 175.10.b.c | 4 | |
| 5.b | even | 2 | 1 | inner | 175.10.b.c | 4 | |
| 5.c | odd | 4 | 1 | 35.10.a.b | ✓ | 2 | |
| 5.c | odd | 4 | 1 | 175.10.a.c | 2 | ||
| 15.e | even | 4 | 1 | 315.10.a.b | 2 | ||
| 35.f | even | 4 | 1 | 245.10.a.c | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 35.10.a.b | ✓ | 2 | 5.c | odd | 4 | 1 | |
| 175.10.a.c | 2 | 5.c | odd | 4 | 1 | ||
| 175.10.b.c | 4 | 1.a | even | 1 | 1 | trivial | |
| 175.10.b.c | 4 | 5.b | even | 2 | 1 | inner | |
| 245.10.a.c | 2 | 35.f | even | 4 | 1 | ||
| 315.10.a.b | 2 | 15.e | even | 4 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{2}^{4} + 304T_{2}^{2} + 18496 \)
acting on \(S_{10}^{\mathrm{new}}(175, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} + 304 T^{2} + 18496 \)
|
| $3$ |
\( T^{4} + 61794 T^{2} + 248346081 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( (T^{2} + 5764801)^{2} \)
|
| $11$ |
\( (T^{2} - 18566 T - 579804919)^{2} \)
|
| $13$ |
\( T^{4} + \cdots + 41\!\cdots\!29 \)
|
| $17$ |
\( T^{4} + \cdots + 10\!\cdots\!49 \)
|
| $19$ |
\( (T^{2} - 143276 T - 2624597308)^{2} \)
|
| $23$ |
\( T^{4} + \cdots + 28\!\cdots\!16 \)
|
| $29$ |
\( (T^{2} + \cdots + 32805350195857)^{2} \)
|
| $31$ |
\( (T^{2} + \cdots - 34498247424800)^{2} \)
|
| $37$ |
\( T^{4} + \cdots + 15\!\cdots\!96 \)
|
| $41$ |
\( (T^{2} + \cdots - 857114015266016)^{2} \)
|
| $43$ |
\( T^{4} + \cdots + 48\!\cdots\!84 \)
|
| $47$ |
\( T^{4} + \cdots + 12\!\cdots\!09 \)
|
| $53$ |
\( T^{4} + \cdots + 40\!\cdots\!36 \)
|
| $59$ |
\( (T^{2} + \cdots - 88\!\cdots\!84)^{2} \)
|
| $61$ |
\( (T^{2} + \cdots - 14\!\cdots\!04)^{2} \)
|
| $67$ |
\( T^{4} + \cdots + 18\!\cdots\!96 \)
|
| $71$ |
\( (T^{2} + \cdots - 25\!\cdots\!56)^{2} \)
|
| $73$ |
\( T^{4} + \cdots + 26\!\cdots\!04 \)
|
| $79$ |
\( (T^{2} + \cdots + 11\!\cdots\!81)^{2} \)
|
| $83$ |
\( T^{4} + \cdots + 25\!\cdots\!16 \)
|
| $89$ |
\( (T^{2} + \cdots + 75\!\cdots\!32)^{2} \)
|
| $97$ |
\( T^{4} + \cdots + 31\!\cdots\!81 \)
|
| show more | |
| show less |