Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [475,2,Mod(107,475)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(475, base_ring=CyclotomicField(12))
chi = DirichletCharacter(H, H._module([3, 10]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("475.107");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 475 = 5^{2} \cdot 19 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 475.p (of order \(12\), degree \(4\), 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: | \(3.79289409601\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\zeta_{12})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - x^{2} + 1 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{9}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{12}]$ |
$q$-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 primitive root of unity \(\zeta_{12}\). We also show the integral \(q\)-expansion of the trace form.
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/475\mathbb{Z}\right)^\times\).
| \(n\) | \(77\) | \(401\) |
| \(\chi(n)\) | \(\zeta_{12}^{3}\) | \(\zeta_{12}^{2}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 107.1 |
|
−1.36603 | − | 0.366025i | −0.732051 | + | 2.73205i | 0 | 0 | 2.00000 | − | 3.46410i | 0 | 2.00000 | + | 2.00000i | −4.33013 | − | 2.50000i | 0 | ||||||||||||||||||||
| 293.1 | −1.36603 | + | 0.366025i | −0.732051 | − | 2.73205i | 0 | 0 | 2.00000 | + | 3.46410i | 0 | 2.00000 | − | 2.00000i | −4.33013 | + | 2.50000i | 0 | |||||||||||||||||||||
| 407.1 | 0.366025 | + | 1.36603i | 2.73205 | − | 0.732051i | 0 | 0 | 2.00000 | + | 3.46410i | 0 | 2.00000 | + | 2.00000i | 4.33013 | − | 2.50000i | 0 | |||||||||||||||||||||
| 468.1 | 0.366025 | − | 1.36603i | 2.73205 | + | 0.732051i | 0 | 0 | 2.00000 | − | 3.46410i | 0 | 2.00000 | − | 2.00000i | 4.33013 | + | 2.50000i | 0 | |||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 5.c | odd | 4 | 1 | inner |
| 95.h | odd | 6 | 1 | inner |
| 95.l | even | 12 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 475.2.p.a | ✓ | 4 |
| 5.b | even | 2 | 1 | 475.2.p.c | yes | 4 | |
| 5.c | odd | 4 | 1 | inner | 475.2.p.a | ✓ | 4 |
| 5.c | odd | 4 | 1 | 475.2.p.c | yes | 4 | |
| 19.d | odd | 6 | 1 | 475.2.p.c | yes | 4 | |
| 95.h | odd | 6 | 1 | inner | 475.2.p.a | ✓ | 4 |
| 95.l | even | 12 | 1 | inner | 475.2.p.a | ✓ | 4 |
| 95.l | even | 12 | 1 | 475.2.p.c | yes | 4 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 475.2.p.a | ✓ | 4 | 1.a | even | 1 | 1 | trivial |
| 475.2.p.a | ✓ | 4 | 5.c | odd | 4 | 1 | inner |
| 475.2.p.a | ✓ | 4 | 95.h | odd | 6 | 1 | inner |
| 475.2.p.a | ✓ | 4 | 95.l | even | 12 | 1 | inner |
| 475.2.p.c | yes | 4 | 5.b | even | 2 | 1 | |
| 475.2.p.c | yes | 4 | 5.c | odd | 4 | 1 | |
| 475.2.p.c | yes | 4 | 19.d | odd | 6 | 1 | |
| 475.2.p.c | yes | 4 | 95.l | even | 12 | 1 | |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(475, [\chi])\):
|
\( T_{2}^{4} + 2T_{2}^{3} + 2T_{2}^{2} + 4T_{2} + 4 \)
|
|
\( T_{3}^{4} - 4T_{3}^{3} + 8T_{3}^{2} - 32T_{3} + 64 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} + 2 T^{3} + \cdots + 4 \)
|
| $3$ |
\( T^{4} - 4 T^{3} + \cdots + 64 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( T^{4} \)
|
| $11$ |
\( (T + 3)^{4} \)
|
| $13$ |
\( T^{4} + 6 T^{3} + \cdots + 324 \)
|
| $17$ |
\( T^{4} + 6 T^{3} + \cdots + 36 \)
|
| $19$ |
\( T^{4} - 37T^{2} + 361 \)
|
| $23$ |
\( T^{4} + 18 T^{3} + \cdots + 2916 \)
|
| $29$ |
\( T^{4} + 27T^{2} + 729 \)
|
| $31$ |
\( (T^{2} + 75)^{2} \)
|
| $37$ |
\( (T^{2} - 6 T + 18)^{2} \)
|
| $41$ |
\( (T^{2} - 18 T + 108)^{2} \)
|
| $43$ |
\( T^{4} + 18 T^{3} + \cdots + 2916 \)
|
| $47$ |
\( T^{4} + 6 T^{3} + \cdots + 36 \)
|
| $53$ |
\( T^{4} - 4 T^{3} + \cdots + 64 \)
|
| $59$ |
\( T^{4} + 27T^{2} + 729 \)
|
| $61$ |
\( (T^{2} - T + 1)^{2} \)
|
| $67$ |
\( T^{4} - 18 T^{3} + \cdots + 26244 \)
|
| $71$ |
\( (T^{2} + 27 T + 243)^{2} \)
|
| $73$ |
\( T^{4} + 18 T^{3} + \cdots + 2916 \)
|
| $79$ |
\( T^{4} + 27T^{2} + 729 \)
|
| $83$ |
\( T^{4} + 22500 \)
|
| $89$ |
\( T^{4} + 27T^{2} + 729 \)
|
| $97$ |
\( T^{4} - 18 T^{3} + \cdots + 26244 \)
|
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