Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [2800,1,Mod(2001,2800)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(2800, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 1]))
N = Newforms(chi, 1, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("2800.2001");
S:= CuspForms(chi, 1);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 2800 = 2^{4} \cdot 5^{2} \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 1 \) |
| Character orbit: | \([\chi]\) | \(=\) | 2800.f (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: | yes |
| Analytic conductor: | \(1.39738203537\) |
| Analytic rank: | \(0\) |
| Dimension: | \(1\) |
| Coefficient field: | \(\mathbb{Q}\) |
| Coefficient ring: | \(\mathbb{Z}\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 175) |
| Projective image: | \(D_{3}\) |
| Projective field: | Galois closure of 3.1.175.1 |
| Artin image: | $D_6$ |
| Artin field: | Galois closure of 6.0.9800000.1 |
$q$-expansion
comment: q-expansion
sage: f.q_expansion() # note that sage often uses an isomorphic number field
gp: mfcoefs(f, 20)
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2800\mathbb{Z}\right)^\times\).
| \(n\) | \(351\) | \(801\) | \(2101\) | \(2577\) |
| \(\chi(n)\) | \(1\) | \(-1\) | \(1\) | \(1\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2001.1 |
|
0 | 0 | 0 | 0 | 0 | 1.00000 | 0 | 1.00000 | 0 | |||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 7.b | odd | 2 | 1 | CM by \(\Q(\sqrt{-7}) \) |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 2800.1.f.b | 1 | |
| 4.b | odd | 2 | 1 | 175.1.d.b | yes | 1 | |
| 5.b | even | 2 | 1 | 2800.1.f.a | 1 | ||
| 5.c | odd | 4 | 2 | 2800.1.p.a | 2 | ||
| 7.b | odd | 2 | 1 | CM | 2800.1.f.b | 1 | |
| 12.b | even | 2 | 1 | 1575.1.h.a | 1 | ||
| 20.d | odd | 2 | 1 | 175.1.d.a | ✓ | 1 | |
| 20.e | even | 4 | 2 | 175.1.c.a | 2 | ||
| 28.d | even | 2 | 1 | 175.1.d.b | yes | 1 | |
| 28.f | even | 6 | 2 | 1225.1.i.a | 2 | ||
| 28.g | odd | 6 | 2 | 1225.1.i.a | 2 | ||
| 35.c | odd | 2 | 1 | 2800.1.f.a | 1 | ||
| 35.f | even | 4 | 2 | 2800.1.p.a | 2 | ||
| 60.h | even | 2 | 1 | 1575.1.h.c | 1 | ||
| 60.l | odd | 4 | 2 | 1575.1.e.a | 2 | ||
| 84.h | odd | 2 | 1 | 1575.1.h.a | 1 | ||
| 140.c | even | 2 | 1 | 175.1.d.a | ✓ | 1 | |
| 140.j | odd | 4 | 2 | 175.1.c.a | 2 | ||
| 140.p | odd | 6 | 2 | 1225.1.i.b | 2 | ||
| 140.s | even | 6 | 2 | 1225.1.i.b | 2 | ||
| 140.w | even | 12 | 4 | 1225.1.j.a | 4 | ||
| 140.x | odd | 12 | 4 | 1225.1.j.a | 4 | ||
| 420.o | odd | 2 | 1 | 1575.1.h.c | 1 | ||
| 420.w | even | 4 | 2 | 1575.1.e.a | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 175.1.c.a | 2 | 20.e | even | 4 | 2 | ||
| 175.1.c.a | 2 | 140.j | odd | 4 | 2 | ||
| 175.1.d.a | ✓ | 1 | 20.d | odd | 2 | 1 | |
| 175.1.d.a | ✓ | 1 | 140.c | even | 2 | 1 | |
| 175.1.d.b | yes | 1 | 4.b | odd | 2 | 1 | |
| 175.1.d.b | yes | 1 | 28.d | even | 2 | 1 | |
| 1225.1.i.a | 2 | 28.f | even | 6 | 2 | ||
| 1225.1.i.a | 2 | 28.g | odd | 6 | 2 | ||
| 1225.1.i.b | 2 | 140.p | odd | 6 | 2 | ||
| 1225.1.i.b | 2 | 140.s | even | 6 | 2 | ||
| 1225.1.j.a | 4 | 140.w | even | 12 | 4 | ||
| 1225.1.j.a | 4 | 140.x | odd | 12 | 4 | ||
| 1575.1.e.a | 2 | 60.l | odd | 4 | 2 | ||
| 1575.1.e.a | 2 | 420.w | even | 4 | 2 | ||
| 1575.1.h.a | 1 | 12.b | even | 2 | 1 | ||
| 1575.1.h.a | 1 | 84.h | odd | 2 | 1 | ||
| 1575.1.h.c | 1 | 60.h | even | 2 | 1 | ||
| 1575.1.h.c | 1 | 420.o | odd | 2 | 1 | ||
| 2800.1.f.a | 1 | 5.b | even | 2 | 1 | ||
| 2800.1.f.a | 1 | 35.c | odd | 2 | 1 | ||
| 2800.1.f.b | 1 | 1.a | even | 1 | 1 | trivial | |
| 2800.1.f.b | 1 | 7.b | odd | 2 | 1 | CM | |
| 2800.1.p.a | 2 | 5.c | odd | 4 | 2 | ||
| 2800.1.p.a | 2 | 35.f | even | 4 | 2 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(2800, [\chi])\):
|
\( T_{3} \)
|
|
\( T_{23} + 1 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T \)
|
| $3$ |
\( T \)
|
| $5$ |
\( T \)
|
| $7$ |
\( T - 1 \)
|
| $11$ |
\( T - 1 \)
|
| $13$ |
\( T \)
|
| $17$ |
\( T \)
|
| $19$ |
\( T \)
|
| $23$ |
\( T + 1 \)
|
| $29$ |
\( T + 1 \)
|
| $31$ |
\( T \)
|
| $37$ |
\( T - 1 \)
|
| $41$ |
\( T \)
|
| $43$ |
\( T + 1 \)
|
| $47$ |
\( T \)
|
| $53$ |
\( T + 2 \)
|
| $59$ |
\( T \)
|
| $61$ |
\( T \)
|
| $67$ |
\( T + 1 \)
|
| $71$ |
\( T - 1 \)
|
| $73$ |
\( T \)
|
| $79$ |
\( T - 1 \)
|
| $83$ |
\( T \)
|
| $89$ |
\( T \)
|
| $97$ |
\( T \)
|
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