gp:[N,k,chi] = [20096,2,Mod(1,20096)]
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("20096.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(20096, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,0,2,0,0,0,1,0,1,0,-2,0,5,0,0,0,7,0,-6,0,2,0,3,0,-5,0,-4,0,
-6,0,-4,0,-4,0,0,0,-3,0,10,0,-8,0,7,0,0,0,-8,0,-6,0,14,0,0,0,0,0,-12,0,
-5,0,-2,0,1,0,0,0,0,0,6,0,-14,0,4,0,-10,0,-2,0,8,0,-11,0,16,0,0,0,-12,
0,-15,0,5,0,-8,0,0,0,-8,0,-2,0]
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
|
| \(2\) |
\( +1 \) |
| \(157\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.