gp:[N,k,chi] = [45570,2,Mod(1,45570)]
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("45570.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(45570, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,1,1,1,1,1,0,1,1,1,5,1,6,0,1,1,4,1,-5,1,0,5,5,1,1,6,1,0,8,1,
1,1,5,4,0,1,4,-5,6,1,0,0,-7,5,1,5,-6,1,0,1,4,6,11,1,5,0,-5,8,-14,1,6,1,
0,1,6,5,10,4,5,0,-9,1,3,4,1,-5,0,6,-7,1,1,0,12,0,4,-7,8,5,9,1,0,5,1,-6,
-5,1,-10,0,5,1]
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
|
| \(2\) |
\( -1 \) |
| \(3\) |
\( -1 \) |
| \(5\) |
\( -1 \) |
| \(7\) |
\( -1 \) |
| \(31\) |
\( -1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.