Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [192,5,Mod(65,192)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(192, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 1]))
N = Newforms(chi, 5, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("192.65");
S:= CuspForms(chi, 5);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 192 = 2^{6} \cdot 3 \) |
| Weight: | \( k \) | \(=\) | \( 5 \) |
| Character orbit: | \([\chi]\) | \(=\) | 192.e (of order \(2\), degree \(1\), not minimal) |
Newform invariants
comment: select newform
sage: f = N[0] # Warning: the index may be different
gp: f = lf[1] \\ Warning: the index may be different
| Self dual: | no |
| Analytic conductor: | \(19.8470329121\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\sqrt{-2}, \sqrt{13})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - 2x^{3} - x^{2} + 2x + 27 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 2^{8}\cdot 3 \) |
| Twist minimal: | no (minimal twist has level 24) |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-expansion
comment: q-expansion
sage: f.q_expansion() # note that sage often uses an isomorphic number field
gp: mfcoefs(f, 20)
Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.
Basis of coefficient ring in terms of a root \(\nu\) of
\( x^{4} - 2x^{3} - x^{2} + 2x + 27 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( -2\nu^{3} - 4\nu^{2} + 28\nu - 4 ) / 7 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( -8\nu^{3} + 40\nu^{2} - 44 ) / 7 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( 32\nu^{3} - 48\nu^{2} + 112\nu - 48 ) / 21 \)
|
| \(\nu\) | \(=\) |
\( ( 3\beta_{3} + 2\beta_{2} + 8\beta _1 + 24 ) / 48 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( 3\beta_{3} + 5\beta_{2} - 4\beta _1 + 36 ) / 24 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( 15\beta_{3} + 4\beta_{2} - 20\beta _1 + 48 ) / 24 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/192\mathbb{Z}\right)^\times\).
| \(n\) | \(65\) | \(127\) | \(133\) |
| \(\chi(n)\) | \(-1\) | \(1\) | \(1\) |
Embeddings
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.
comment: embeddings in the coefficient field
gp: mfembed(f)
| Label | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 65.1 |
|
0 | −6.21110 | − | 6.51323i | 0 | − | 16.4520i | 0 | 49.2666 | 0 | −3.84441 | + | 80.9087i | 0 | |||||||||||||||||||||||||
| 65.2 | 0 | −6.21110 | + | 6.51323i | 0 | 16.4520i | 0 | 49.2666 | 0 | −3.84441 | − | 80.9087i | 0 | |||||||||||||||||||||||||||
| 65.3 | 0 | 8.21110 | − | 3.68481i | 0 | − | 44.7363i | 0 | −37.2666 | 0 | 53.8444 | − | 60.5126i | 0 | ||||||||||||||||||||||||||
| 65.4 | 0 | 8.21110 | + | 3.68481i | 0 | 44.7363i | 0 | −37.2666 | 0 | 53.8444 | + | 60.5126i | 0 | |||||||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 3.b | odd | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 192.5.e.f | 4 | |
| 3.b | odd | 2 | 1 | inner | 192.5.e.f | 4 | |
| 4.b | odd | 2 | 1 | 192.5.e.e | 4 | ||
| 8.b | even | 2 | 1 | 24.5.e.a | ✓ | 4 | |
| 8.d | odd | 2 | 1 | 48.5.e.c | 4 | ||
| 12.b | even | 2 | 1 | 192.5.e.e | 4 | ||
| 24.f | even | 2 | 1 | 48.5.e.c | 4 | ||
| 24.h | odd | 2 | 1 | 24.5.e.a | ✓ | 4 | |
| 40.f | even | 2 | 1 | 600.5.l.a | 4 | ||
| 40.i | odd | 4 | 2 | 600.5.c.a | 8 | ||
| 72.j | odd | 6 | 2 | 648.5.m.e | 8 | ||
| 72.n | even | 6 | 2 | 648.5.m.e | 8 | ||
| 120.i | odd | 2 | 1 | 600.5.l.a | 4 | ||
| 120.w | even | 4 | 2 | 600.5.c.a | 8 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 24.5.e.a | ✓ | 4 | 8.b | even | 2 | 1 | |
| 24.5.e.a | ✓ | 4 | 24.h | odd | 2 | 1 | |
| 48.5.e.c | 4 | 8.d | odd | 2 | 1 | ||
| 48.5.e.c | 4 | 24.f | even | 2 | 1 | ||
| 192.5.e.e | 4 | 4.b | odd | 2 | 1 | ||
| 192.5.e.e | 4 | 12.b | even | 2 | 1 | ||
| 192.5.e.f | 4 | 1.a | even | 1 | 1 | trivial | |
| 192.5.e.f | 4 | 3.b | odd | 2 | 1 | inner | |
| 600.5.c.a | 8 | 40.i | odd | 4 | 2 | ||
| 600.5.c.a | 8 | 120.w | even | 4 | 2 | ||
| 600.5.l.a | 4 | 40.f | even | 2 | 1 | ||
| 600.5.l.a | 4 | 120.i | odd | 2 | 1 | ||
| 648.5.m.e | 8 | 72.j | odd | 6 | 2 | ||
| 648.5.m.e | 8 | 72.n | even | 6 | 2 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{5}^{\mathrm{new}}(192, [\chi])\):
|
\( T_{5}^{4} + 2272T_{5}^{2} + 541696 \)
|
|
\( T_{7}^{2} - 12T_{7} - 1836 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} \)
|
| $3$ |
\( T^{4} - 4 T^{3} + \cdots + 6561 \)
|
| $5$ |
\( T^{4} + 2272 T^{2} + 541696 \)
|
| $7$ |
\( (T^{2} - 12 T - 1836)^{2} \)
|
| $11$ |
\( T^{4} + 43744 T^{2} + 25240576 \)
|
| $13$ |
\( (T^{2} - 124 T - 26108)^{2} \)
|
| $17$ |
\( T^{4} + 122368 T^{2} + 975437824 \)
|
| $19$ |
\( (T^{2} + 412 T + 40564)^{2} \)
|
| $23$ |
\( T^{4} + \cdots + 15447506944 \)
|
| $29$ |
\( T^{4} + \cdots + 12680561664 \)
|
| $31$ |
\( (T^{2} - 1900 T + 675988)^{2} \)
|
| $37$ |
\( (T^{2} - 1404 T - 974844)^{2} \)
|
| $41$ |
\( T^{4} + \cdots + 1432636637184 \)
|
| $43$ |
\( (T^{2} - 484 T - 33164)^{2} \)
|
| $47$ |
\( T^{4} + \cdots + 55228760064 \)
|
| $53$ |
\( T^{4} + \cdots + 22497339114496 \)
|
| $59$ |
\( T^{4} + \cdots + 1354747012096 \)
|
| $61$ |
\( (T^{2} + 4292 T + 981124)^{2} \)
|
| $67$ |
\( (T^{2} - 7556 T + 14226484)^{2} \)
|
| $71$ |
\( T^{4} + \cdots + 23483250786304 \)
|
| $73$ |
\( (T^{2} - 2756 T - 2414204)^{2} \)
|
| $79$ |
\( (T^{2} + 532 T - 36098156)^{2} \)
|
| $83$ |
\( T^{4} + \cdots + 16\!\cdots\!64 \)
|
| $89$ |
\( T^{4} + \cdots + 919970046296064 \)
|
| $97$ |
\( (T^{2} - 16228 T + 47116996)^{2} \)
|
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