gp:[N,k,chi] = [39326,2,Mod(1,39326)]
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("39326.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(39326, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage:traces = [1,1,-3,1,0,-3,1,1,6,0,0,-3,1,1,0,1,1,6,3,0,-3,0,-5,-3,-5,1,-9,
1,9,0,4,1,0,1,0,6,-3,3,-3,0,-6,-3,-2,0,0,-5,-2,-3,1,-5,-3,1,0,-9,0,1,-9,
9,-6,0,12,4,6,1,0,0,4,1,15,0,5,6,8,-3,15,3,0,-3,-13,0,9,-6,-9,-3,0,-2,
-27,0,-6,0,1,-5,-12,-2,0,-3,5,1,0,-5]
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
|
| \(2\) |
\( -1 \) |
| \(7\) |
\( -1 \) |
| \(53\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.