gp:[N,k,chi] = [10230,2,Mod(1,10230)]
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("10230.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(10230, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,1,1,1,-1,1,2,1,1,-1,-1,1,2,2,-1,1,0,1,-4,-1,2,-1,0,1,1,2,1,
2,6,-1,1,1,-1,0,-2,1,-10,-4,2,-1,12,2,8,-1,-1,0,0,1,-3,1,0,2,6,1,1,2,-4,
6,0,-1,8,1,2,1,-2,-1,-4,0,0,-2,-12,1,14,-10,1,-4,-2,2,14,-1,1,12,6,2,0,
8,6,-1,-6,-1,4,0,1,0,4,1,-10,-3,-1,1]
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
|
| \(2\) |
\( -1 \) |
| \(3\) |
\( -1 \) |
| \(5\) |
\( +1 \) |
| \(11\) |
\( +1 \) |
| \(31\) |
\( -1 \) |
This newform does not admit any (nontrivial) inner twists.
Twists of this newform have not been computed.