gp:[N,k,chi] = [39710,2,Mod(1,39710)]
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("39710.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(39710, 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,-2,-1,-3,1,-1,0,-3,2,0,1,0,3,0,-1,0,1,0,0,1,3,
0,-2,1,0,-4,-1,0,0,2,-3,0,0,0,1,-12,0,1,-1,3,0,-1,0,-3,-1,0,-3,0,0,1,2,
0,-1,12,0,-11,4,6,1,3,0,14,0,0,-2,7,3,-12,0,0,0,2,0,-10,-1,9,12,3,0,0,
-1,0,1,9,-3,6,0,0,1,0,0,-17,3,3,1]
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
|
| \(2\) |
\( +1 \) |
| \(5\) |
\( +1 \) |
| \(11\) |
\( +1 \) |
| \(19\) |
\( -1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.