Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [2752,2,Mod(1,2752)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(2752, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("2752.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 2752 = 2^{6} \cdot 43 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 2752.a (trivial) |
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: | yes |
| Analytic conductor: | \(21.9748306363\) |
| Analytic rank: | \(0\) |
| Dimension: | \(5\) |
| Coefficient field: | 5.5.7998268.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{5} - x^{4} - 13x^{3} + 8x^{2} + 42x - 8 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{11}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 344) |
| Fricke sign: | \(-1\) |
| Sato-Tate group: | $\mathrm{SU}(2)$ |
$q$-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 \(1,\beta_1,\beta_2,\beta_3,\beta_4\) 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
\( x^{5} - x^{4} - 13x^{3} + 8x^{2} + 42x - 8 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 5 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( \nu^{4} - \nu^{3} - 7\nu^{2} + 4\nu + 2 ) / 2 \)
|
| \(\beta_{4}\) | \(=\) |
\( \nu^{3} - 7\nu - 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 5 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{4} + 7\beta _1 + 2 \)
|
| \(\nu^{4}\) | \(=\) |
\( \beta_{4} + 2\beta_{3} + 7\beta_{2} + 3\beta _1 + 35 \)
|
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.1 |
|
0 | −2.96951 | 0 | 3.39854 | 0 | −0.580548 | 0 | 5.81799 | 0 | |||||||||||||||||||||||||||||||||
| 1.2 | 0 | −2.59583 | 0 | −2.67923 | 0 | 3.41757 | 0 | 3.73834 | 0 | ||||||||||||||||||||||||||||||||||
| 1.3 | 0 | −0.185905 | 0 | −3.29491 | 0 | −2.67053 | 0 | −2.96544 | 0 | ||||||||||||||||||||||||||||||||||
| 1.4 | 0 | 2.12870 | 0 | 3.25498 | 0 | −4.72362 | 0 | 1.53137 | 0 | ||||||||||||||||||||||||||||||||||
| 1.5 | 0 | 2.62255 | 0 | −1.67938 | 0 | 2.55713 | 0 | 3.87775 | 0 | ||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(43\) | \(1\) |
Inner twists
This newform does not admit any (nontrivial) inner twists.
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 2752.2.a.x | 5 | |
| 4.b | odd | 2 | 1 | 2752.2.a.z | 5 | ||
| 8.b | even | 2 | 1 | 688.2.a.j | 5 | ||
| 8.d | odd | 2 | 1 | 344.2.a.d | ✓ | 5 | |
| 24.f | even | 2 | 1 | 3096.2.a.t | 5 | ||
| 24.h | odd | 2 | 1 | 6192.2.a.ca | 5 | ||
| 40.e | odd | 2 | 1 | 8600.2.a.q | 5 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 344.2.a.d | ✓ | 5 | 8.d | odd | 2 | 1 | |
| 688.2.a.j | 5 | 8.b | even | 2 | 1 | ||
| 2752.2.a.x | 5 | 1.a | even | 1 | 1 | trivial | |
| 2752.2.a.z | 5 | 4.b | odd | 2 | 1 | ||
| 3096.2.a.t | 5 | 24.f | even | 2 | 1 | ||
| 6192.2.a.ca | 5 | 24.h | odd | 2 | 1 | ||
| 8600.2.a.q | 5 | 40.e | odd | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2752))\):
|
\( T_{3}^{5} + T_{3}^{4} - 13T_{3}^{3} - 8T_{3}^{2} + 42T_{3} + 8 \)
|
|
\( T_{5}^{5} + T_{5}^{4} - 21T_{5}^{3} - 26T_{5}^{2} + 110T_{5} + 164 \)
|
|
\( T_{7}^{5} + 2T_{7}^{4} - 22T_{7}^{3} - 24T_{7}^{2} + 104T_{7} + 64 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{5} \)
|
| $3$ |
\( T^{5} + T^{4} - 13 T^{3} + \cdots + 8 \)
|
| $5$ |
\( T^{5} + T^{4} + \cdots + 164 \)
|
| $7$ |
\( T^{5} + 2 T^{4} + \cdots + 64 \)
|
| $11$ |
\( T^{5} - 2 T^{4} + \cdots - 320 \)
|
| $13$ |
\( T^{5} + 8 T^{4} + \cdots + 8 \)
|
| $17$ |
\( T^{5} - 15 T^{4} + \cdots + 122 \)
|
| $19$ |
\( T^{5} - 7 T^{4} + \cdots + 80 \)
|
| $23$ |
\( T^{5} - 3 T^{4} + \cdots - 464 \)
|
| $29$ |
\( T^{5} + T^{4} + \cdots + 4756 \)
|
| $31$ |
\( T^{5} + 7 T^{4} + \cdots - 40 \)
|
| $37$ |
\( T^{5} - 7 T^{4} + \cdots - 496 \)
|
| $41$ |
\( T^{5} - 11 T^{4} + \cdots - 20398 \)
|
| $43$ |
\( (T + 1)^{5} \)
|
| $47$ |
\( T^{5} - 17 T^{4} + \cdots - 32 \)
|
| $53$ |
\( T^{5} - 10 T^{4} + \cdots - 232 \)
|
| $59$ |
\( T^{5} + 16 T^{4} + \cdots + 68416 \)
|
| $61$ |
\( T^{5} - 154 T^{3} + \cdots + 400 \)
|
| $67$ |
\( T^{5} - 14 T^{4} + \cdots + 784 \)
|
| $71$ |
\( T^{5} - 16 T^{4} + \cdots - 119936 \)
|
| $73$ |
\( T^{5} + 4 T^{4} + \cdots + 4624 \)
|
| $79$ |
\( T^{5} - T^{4} + \cdots + 1312 \)
|
| $83$ |
\( T^{5} + 8 T^{4} + \cdots - 67216 \)
|
| $89$ |
\( T^{5} - 18 T^{4} + \cdots + 80 \)
|
| $97$ |
\( T^{5} - 25 T^{4} + \cdots - 68614 \)
|
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