gp:[N,k,chi] = [45486,2,Mod(1,45486)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("45486.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(45486, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,1,0,1,3,0,1,1,0,3,6,0,5,1,0,1,6,0,0,3,0,6,3,0,4,5,0,1,-6,0,
-4,1,0,6,3,0,8,0,0,3,-6,0,-4,6,0,3,-6,0,1,4,0,5,-12,0,18,1,0,-6,9,0,-13,
-4,0,1,15,0,14,6,0,3,3,0,-4,8,0,0,6,0,8,3,0,-6,-15,0,18,-4,0,6,6,0,5,3,
0,-6,0,0,8,1,0,4]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(None)] == traces)
gp:f = lf[1] \\ Warning: the index may be different
sage:f.q_expansion() # note that sage often uses an isomorphic number field
gp:mfcoefs(f, 20)
| \( p \) |
Sign
|
| \(2\) |
\( -1 \) |
| \(3\) |
\( -1 \) |
| \(7\) |
\( -1 \) |
| \(19\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.