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gp:[N,k,chi] = [54,14,Mod(1,54)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
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sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(54, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0]))
N = Newforms(chi, 14, names="a")
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magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("54.1");
S:= CuspForms(chi, 14);
N := Newforms(S);
Newform invariants
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sage:traces = [2,128,0,8192,-18924]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(5)] == 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)
Coefficients of the \(q\)-expansion are expressed in terms of \(\beta = 54\sqrt{13729}\).
We also show the integral \(q\)-expansion of the trace form.
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.
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gp:mfembed(f)
| \( p \) |
Sign
|
| \(2\) |
\( -1 \) |
| \(3\) |
\( -1 \) |
This newform does not admit any (nontrivial) inner twists.
This newform subspace can be constructed as the kernel of the linear operator
\( T_{5}^{2} + 18924T_{5} + 49495680 \)
acting on \(S_{14}^{\mathrm{new}}(\Gamma_0(54))\).
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| $p$ |
$F_p(T)$ |
| $2$ |
\( (T - 64)^{2} \)
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|
| $3$ |
\( T^{2} \)
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|
| $5$ |
\( T^{2} + 18924 T + 49495680 \)
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|
| $7$ |
\( T^{2} + \cdots - 77401023623 \)
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|
| $11$ |
\( T^{2} + \cdots - 89143214371200 \)
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|
| $13$ |
\( T^{2} + \cdots - 277250687742575 \)
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|
| $17$ |
\( T^{2} + \cdots + 28\!\cdots\!32 \)
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|
| $19$ |
\( T^{2} + \cdots - 53\!\cdots\!11 \)
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|
| $23$ |
\( T^{2} + \cdots - 32\!\cdots\!24 \)
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|
| $29$ |
\( T^{2} + \cdots - 10\!\cdots\!48 \)
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|
| $31$ |
\( T^{2} + \cdots - 26\!\cdots\!00 \)
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|
| $37$ |
\( T^{2} + \cdots - 24\!\cdots\!15 \)
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|
| $41$ |
\( T^{2} + \cdots - 90\!\cdots\!20 \)
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|
| $43$ |
\( T^{2} + \cdots + 68\!\cdots\!16 \)
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| $47$ |
\( T^{2} + \cdots - 37\!\cdots\!52 \)
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| $53$ |
\( T^{2} + \cdots - 64\!\cdots\!20 \)
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|
| $59$ |
\( T^{2} + \cdots + 25\!\cdots\!72 \)
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| $61$ |
\( T^{2} + \cdots - 21\!\cdots\!39 \)
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| $67$ |
\( T^{2} + \cdots + 45\!\cdots\!29 \)
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| $71$ |
\( T^{2} + \cdots + 74\!\cdots\!28 \)
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| $73$ |
\( T^{2} + \cdots - 94\!\cdots\!35 \)
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| $79$ |
\( T^{2} + \cdots - 46\!\cdots\!87 \)
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| $83$ |
\( T^{2} + \cdots + 16\!\cdots\!64 \)
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|
| $89$ |
\( T^{2} + \cdots + 21\!\cdots\!88 \)
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| $97$ |
\( T^{2} + \cdots + 20\!\cdots\!25 \)
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