gp: [N,k,chi] = [6728,2,Mod(1,6728)]
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("6728.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
sage: from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(6728, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
Newform invariants
sage: traces = [24,0,4,0,8,0,-2]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(7)] == traces)
gp: f = lf[1] \\ Warning: the index may be different
The algebraic \(q\)-expansion of this newform has not been computed, but we have computed the trace expansion .
For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.
For more information on an embedded modular form you can click on its label.
gp: mfembed(f)
Refresh table
\( p \)
Sign
\(2\)
\( +1 \)
\(29\)
\( -1 \)
This newform does not admit any (nontrivial ) inner twists .
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(6728))\):
\( T_{3}^{24} - 4 T_{3}^{23} - 44 T_{3}^{22} + 178 T_{3}^{21} + 834 T_{3}^{20} - 3382 T_{3}^{19} + \cdots + 64 \)
T3^24 - 4*T3^23 - 44*T3^22 + 178*T3^21 + 834*T3^20 - 3382*T3^19 - 8977*T3^18 + 35882*T3^17 + 60973*T3^16 - 233362*T3^15 - 274457*T3^14 + 960668*T3^13 + 832521*T3^12 - 2493152*T3^11 - 1678468*T3^10 + 3931370*T3^9 + 2137277*T3^8 - 3474430*T3^7 - 1557523*T3^6 + 1448364*T3^5 + 544068*T3^4 - 169136*T3^3 - 64864*T3^2 - 2688*T3 + 64
\( T_{5}^{24} - 8 T_{5}^{23} - 44 T_{5}^{22} + 458 T_{5}^{21} + 704 T_{5}^{20} - 11194 T_{5}^{19} + \cdots + 1248073 \)
T5^24 - 8*T5^23 - 44*T5^22 + 458*T5^21 + 704*T5^20 - 11194*T5^19 - 4474*T5^18 + 154666*T5^17 + 455*T5^16 - 1339408*T5^15 + 98104*T5^14 + 7563612*T5^13 + 131330*T5^12 - 27879650*T5^11 - 5336202*T5^10 + 64847490*T5^9 + 25597540*T5^8 - 87885802*T5^7 - 52418838*T5^6 + 58587180*T5^5 + 46794376*T5^4 - 12083334*T5^3 - 13707210*T5^2 + 470356*T5 + 1248073