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gp:[N,k,chi] = [25410,2,Mod(1,25410)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
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magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("25410.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
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sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(25410, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
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sage:traces = [1,-1,-1,1,1,1,1,-1,1,-1,0,-1,2,-1,-1,1,2,-1,2,1,-1,0,-4,1,1,
-2,-1,1,-2,1,-4,-1,0,-2,1,1,8,-2,-2,-1,-6,1,-12,0,1,4,-2,-1,1,-1,-2,2,
4,1,0,-1,-2,2,-12,-1,12,4,1,1,2,0,2,2,4,-1,8,-1,14,-8,-1,2,0,2,-2,1,1,
6,-8,-1,2,12,2,0,6,-1,2,-4,4,2,2,1,-8,-1,0,1]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(None)] == traces)
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gp:f = lf[1] \\ Warning: the index may be different
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sage:f.q_expansion() # note that sage often uses an isomorphic number field
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gp:mfcoefs(f, 20)
| \( p \) |
Sign
|
| \(2\) |
\( +1 \) |
| \(3\) |
\( +1 \) |
| \(5\) |
\( -1 \) |
| \(7\) |
\( -1 \) |
| \(11\) |
\( +1 \) |
Inner twists of this newform have not been computed.
Twists of this newform have not been computed.
