gp:[N,k,chi] = [15210,2,Mod(1,15210)]
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("15210.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(15210, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,-1,0,1,1,0,4,-1,0,-1,-6,0,0,-4,0,1,6,0,-2,1,0,6,-6,0,1,0,0,
4,6,0,-2,-1,0,-6,4,0,-2,2,0,-1,-6,0,2,-6,0,6,-12,0,9,-1,0,0,-6,0,-6,-4,
0,-6,6,0,2,2,0,1,0,0,4,6,0,-4,-6,0,10,2,0,-2,-24,0,-4,1,0,6,0,0,6,-2,0,
6,-6,0,0,-6,0,12,-2,0,-2,-9,0,1]
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
|
| \(2\) |
\( +1 \) |
| \(3\) |
\( -1 \) |
| \(5\) |
\( -1 \) |
| \(13\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.