Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [175,4,Mod(118,175)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(175, base_ring=CyclotomicField(4))
chi = DirichletCharacter(H, H._module([3, 2]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("175.118");
S:= CuspForms(chi, 4);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 175 = 5^{2} \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 4 \) |
| Character orbit: | \([\chi]\) | \(=\) | 175.f (of order \(4\), degree \(2\), 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: | \(10.3253342510\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Relative dimension: | \(2\) over \(\Q(i)\) |
| Coefficient field: | \(\Q(i, \sqrt{110})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} + 3025 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{4}]$ |
$q$-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
\( x^{4} + 3025 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{2} ) / 55 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( \nu^{3} ) / 55 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( 55\beta_{2} \)
|
| \(\nu^{3}\) | \(=\) |
\( 55\beta_{3} \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/175\mathbb{Z}\right)^\times\).
| \(n\) | \(101\) | \(127\) |
| \(\chi(n)\) | \(-1\) | \(\beta_{2}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 118.1 |
|
3.00000 | − | 3.00000i | −5.24404 | + | 5.24404i | − | 10.0000i | 0 | 31.4643i | 6.75596 | − | 17.2440i | −6.00000 | − | 6.00000i | − | 28.0000i | 0 | ||||||||||||||||||||
| 118.2 | 3.00000 | − | 3.00000i | 5.24404 | − | 5.24404i | − | 10.0000i | 0 | − | 31.4643i | 17.2440 | − | 6.75596i | −6.00000 | − | 6.00000i | − | 28.0000i | 0 | ||||||||||||||||||||
| 132.1 | 3.00000 | + | 3.00000i | −5.24404 | − | 5.24404i | 10.0000i | 0 | − | 31.4643i | 6.75596 | + | 17.2440i | −6.00000 | + | 6.00000i | 28.0000i | 0 | ||||||||||||||||||||||
| 132.2 | 3.00000 | + | 3.00000i | 5.24404 | + | 5.24404i | 10.0000i | 0 | 31.4643i | 17.2440 | + | 6.75596i | −6.00000 | + | 6.00000i | 28.0000i | 0 | |||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 5.c | odd | 4 | 1 | inner |
| 7.b | odd | 2 | 1 | inner |
| 35.f | even | 4 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 175.4.f.e | yes | 4 |
| 5.b | even | 2 | 1 | 175.4.f.a | ✓ | 4 | |
| 5.c | odd | 4 | 1 | 175.4.f.a | ✓ | 4 | |
| 5.c | odd | 4 | 1 | inner | 175.4.f.e | yes | 4 |
| 7.b | odd | 2 | 1 | inner | 175.4.f.e | yes | 4 |
| 35.c | odd | 2 | 1 | 175.4.f.a | ✓ | 4 | |
| 35.f | even | 4 | 1 | 175.4.f.a | ✓ | 4 | |
| 35.f | even | 4 | 1 | inner | 175.4.f.e | yes | 4 |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 175.4.f.a | ✓ | 4 | 5.b | even | 2 | 1 | |
| 175.4.f.a | ✓ | 4 | 5.c | odd | 4 | 1 | |
| 175.4.f.a | ✓ | 4 | 35.c | odd | 2 | 1 | |
| 175.4.f.a | ✓ | 4 | 35.f | even | 4 | 1 | |
| 175.4.f.e | yes | 4 | 1.a | even | 1 | 1 | trivial |
| 175.4.f.e | yes | 4 | 5.c | odd | 4 | 1 | inner |
| 175.4.f.e | yes | 4 | 7.b | odd | 2 | 1 | inner |
| 175.4.f.e | yes | 4 | 35.f | even | 4 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{2}^{2} - 6T_{2} + 18 \)
acting on \(S_{4}^{\mathrm{new}}(175, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T^{2} - 6 T + 18)^{2} \)
|
| $3$ |
\( T^{4} + 3025 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( T^{4} - 48 T^{3} + \cdots + 117649 \)
|
| $11$ |
\( (T - 9)^{4} \)
|
| $13$ |
\( T^{4} + 44289025 \)
|
| $17$ |
\( T^{4} + 19847025 \)
|
| $19$ |
\( (T^{2} - 15840)^{2} \)
|
| $23$ |
\( (T^{2} + 168 T + 14112)^{2} \)
|
| $29$ |
\( (T^{2} + 23409)^{2} \)
|
| $31$ |
\( (T^{2} + 15840)^{2} \)
|
| $37$ |
\( (T^{2} + 24 T + 288)^{2} \)
|
| $41$ |
\( (T^{2} + 142560)^{2} \)
|
| $43$ |
\( (T^{2} - 552 T + 152352)^{2} \)
|
| $47$ |
\( T^{4} + 1607609025 \)
|
| $53$ |
\( (T^{2} + 864 T + 373248)^{2} \)
|
| $59$ |
\( (T^{2} - 63360)^{2} \)
|
| $61$ |
\( (T^{2} + 142560)^{2} \)
|
| $67$ |
\( (T^{2} + 144 T + 10368)^{2} \)
|
| $71$ |
\( (T - 324)^{4} \)
|
| $73$ |
\( T^{4} + 484000000 \)
|
| $79$ |
\( (T^{2} + 76729)^{2} \)
|
| $83$ |
\( T^{4} + 2083461296400 \)
|
| $89$ |
\( (T^{2} - 776160)^{2} \)
|
| $97$ |
\( T^{4} + 2139525025 \)
|
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