gp:[N,k,chi] = [25230,2,Mod(1,25230)]
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("25230.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(25230, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,-1,-1,1,1,1,1,-1,1,-1,4,-1,4,-1,-1,1,5,-1,6,1,-1,-4,1,1,1,
-4,-1,1,0,1,1,-1,-4,-5,1,1,2,-6,-4,-1,2,1,8,4,1,-1,1,-1,-6,-1,-5,4,-12,
1,4,-1,-6,0,12,-1,-4,-1,1,1,4,4,0,5,-1,-1,-5,-1,-3,-2,-1,6,4,4,7,1,1,-2,
14,-1,5,-8,0,-4,3,-1,4,1,-1,-1,6,1,-1,6,4,1]
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
|
| \(2\) |
\( +1 \) |
| \(3\) |
\( +1 \) |
| \(5\) |
\( -1 \) |
| \(29\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.