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gp:[N,k,chi] = [210,10,Mod(1,210)]
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("210.1");
S:= CuspForms(chi, 10);
N := Newforms(S);
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sage:from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(210, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 10, names="a")
Newform invariants
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sage:traces = [2,-32,-162,512,-1250,2592,4802,-8192,13122,20000,23348]
f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(11)] == 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 \(\beta = 2\sqrt{7141}\).
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
|
| \(2\) |
\( +1 \) |
| \(3\) |
\( +1 \) |
| \(5\) |
\( +1 \) |
| \(7\) |
\( -1 \) |
This newform does not admit any (nontrivial) inner twists.
This newform subspace can be constructed as the kernel of the linear operator
\( T_{11}^{2} - 23348T_{11} - 5934167568 \)
acting on \(S_{10}^{\mathrm{new}}(\Gamma_0(210))\).
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| $p$ |
$F_p(T)$ |
| $2$ |
\( (T + 16)^{2} \)
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|
| $3$ |
\( (T + 81)^{2} \)
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|
| $5$ |
\( (T + 625)^{2} \)
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|
| $7$ |
\( (T - 2401)^{2} \)
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|
| $11$ |
\( T^{2} + \cdots - 5934167568 \)
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|
| $13$ |
\( T^{2} + \cdots - 17105208052 \)
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|
| $17$ |
\( T^{2} + \cdots + 22776183108 \)
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|
| $19$ |
\( T^{2} + \cdots - 23966974544 \)
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|
| $23$ |
\( T^{2} + \cdots + 1210726684944 \)
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|
| $29$ |
\( T^{2} + \cdots + 6246785597508 \)
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|
| $31$ |
\( T^{2} + \cdots - 14421396747760 \)
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|
| $37$ |
\( T^{2} + \cdots - 215787295657996 \)
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|
| $41$ |
\( T^{2} + \cdots - 252837291587772 \)
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|
| $43$ |
\( T^{2} + \cdots + 12\!\cdots\!84 \)
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|
| $47$ |
\( T^{2} + \cdots - 204074594068800 \)
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|
| $53$ |
\( T^{2} + \cdots + 51\!\cdots\!40 \)
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|
| $59$ |
\( T^{2} + \cdots - 24\!\cdots\!96 \)
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|
| $61$ |
\( T^{2} + \cdots + 10\!\cdots\!00 \)
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|
| $67$ |
\( T^{2} + \cdots + 11\!\cdots\!84 \)
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|
| $71$ |
\( T^{2} + \cdots + 97\!\cdots\!48 \)
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|
| $73$ |
\( T^{2} + \cdots - 31\!\cdots\!00 \)
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|
| $79$ |
\( T^{2} + \cdots + 69\!\cdots\!88 \)
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|
| $83$ |
\( T^{2} + \cdots + 76\!\cdots\!76 \)
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|
| $89$ |
\( T^{2} + \cdots - 77\!\cdots\!00 \)
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|
| $97$ |
\( T^{2} + \cdots - 39\!\cdots\!00 \)
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