gp:[N,k,chi] = [29640,2,Mod(1,29640)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(29640, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("29640.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
Newform invariants
sage:traces = [1,0,-1,0,1,0,-4,0,1,0,4,0,-1,0,-1,0,-6,0,1,0,4,0,4,0,1,0,-1,
0,-2,0,-8,0,-4,0,-4,0,10,0,1,0,-6,0,8,0,1,0,-4,0,9,0,6,0,10,0,4,0,-1,0,
4,0,-2,0,-4,0,-1,0,-4,0,-4,0,-16,0,2,0,-1,0,-16,0,8,0,1,0,0,0,-6,0,2,0,
-6,0,4,0,8,0,1,0,-2,0,4,0]
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
|
\(2\) |
\( +1 \) |
\(3\) |
\( +1 \) |
\(5\) |
\( -1 \) |
\(13\) |
\( +1 \) |
\(19\) |
\( -1 \) |
This newform does not admit any (nontrivial) inner twists.
Twists of this newform have not been computed.