![Copy content]()
gp:[N,k,chi] = [85,4,Mod(1,85)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
![Copy content]()
magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("85.1");
S:= CuspForms(chi, 4);
N := Newforms(S);
![Copy content]()
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(85, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0]))
N = Newforms(chi, 4, names="a")
Newform invariants
![Copy content]()
sage:traces = [2,-4,-2]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(3)] == traces)
![Copy content]()
gp:f = lf[1] \\ Warning: the index may be different
![Copy content]()
sage:f.q_expansion() # note that sage often uses an isomorphic number field
![Copy content]()
gp:mfcoefs(f, 20)
Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = \sqrt{3}\).
We also show the integral \(q\)-expansion of the trace form.
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.
![Copy content]()
gp:mfembed(f)
| \( p \) |
Sign
|
| \(5\) |
\( -1 \) |
| \(17\) |
\( +1 \) |
This newform does not admit any (nontrivial) inner twists.
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(85))\):
\( T_{2}^{2} + 4T_{2} + 1 \)
![Copy content]()
![Toggle raw display]()
|
\( T_{3}^{2} + 2T_{3} - 2 \)
![Copy content]()
![Toggle raw display]()
|
| $p$ |
$F_p(T)$ |
| $2$ |
\( T^{2} + 4T + 1 \)
![Copy content]()
![Toggle raw display]()
|
| $3$ |
\( T^{2} + 2T - 2 \)
![Copy content]()
![Toggle raw display]()
|
| $5$ |
\( (T - 5)^{2} \)
![Copy content]()
![Toggle raw display]()
|
| $7$ |
\( T^{2} - 2T - 242 \)
![Copy content]()
![Toggle raw display]()
|
| $11$ |
\( T^{2} + 38T - 146 \)
![Copy content]()
![Toggle raw display]()
|
| $13$ |
\( T^{2} + 80T - 752 \)
![Copy content]()
![Toggle raw display]()
|
| $17$ |
\( (T + 17)^{2} \)
![Copy content]()
![Toggle raw display]()
|
| $19$ |
\( T^{2} + 180T + 7992 \)
![Copy content]()
![Toggle raw display]()
|
| $23$ |
\( T^{2} + 42T - 30162 \)
![Copy content]()
![Toggle raw display]()
|
| $29$ |
\( T^{2} + 216T + 5316 \)
![Copy content]()
![Toggle raw display]()
|
| $31$ |
\( T^{2} - 70T - 58418 \)
![Copy content]()
![Toggle raw display]()
|
| $37$ |
\( T^{2} - 352T - 2732 \)
![Copy content]()
![Toggle raw display]()
|
| $41$ |
\( T^{2} - 344T - 30908 \)
![Copy content]()
![Toggle raw display]()
|
| $43$ |
\( T^{2} + 88T - 80732 \)
![Copy content]()
![Toggle raw display]()
|
| $47$ |
\( T^{2} + 348T + 30084 \)
![Copy content]()
![Toggle raw display]()
|
| $53$ |
\( T^{2} + 164T - 5564 \)
![Copy content]()
![Toggle raw display]()
|
| $59$ |
\( T^{2} + 1436 T + 502456 \)
![Copy content]()
![Toggle raw display]()
|
| $61$ |
\( T^{2} + 76T - 214028 \)
![Copy content]()
![Toggle raw display]()
|
| $67$ |
\( T^{2} + 44T - 284108 \)
![Copy content]()
![Toggle raw display]()
|
| $71$ |
\( T^{2} + 1510 T + 527542 \)
![Copy content]()
![Toggle raw display]()
|
| $73$ |
\( T^{2} - 1088 T + 294964 \)
![Copy content]()
![Toggle raw display]()
|
| $79$ |
\( T^{2} + 958T - 343466 \)
![Copy content]()
![Toggle raw display]()
|
| $83$ |
\( T^{2} - 248T - 154556 \)
![Copy content]()
![Toggle raw display]()
|
| $89$ |
\( T^{2} + 204 T - 1641288 \)
![Copy content]()
![Toggle raw display]()
|
| $97$ |
\( T^{2} - 1012 T - 314252 \)
![Copy content]()
![Toggle raw display]()
|
|
show more
|
|
show less
|
