Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [7007,2,Mod(1,7007)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(7007, 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("7007.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 7007 = 7^{2} \cdot 11 \cdot 13 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 7007.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: | \(55.9511766963\) |
| Analytic rank: | \(1\) |
| Dimension: | \(4\) |
| Coefficient field: | 4.4.7053.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - 2x^{3} - 4x^{2} + 3x + 3 \)
|
| Coefficient ring: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 1001) |
| 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 \(1,\beta_1,\beta_2,\beta_3\) 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
\( x^{4} - 2x^{3} - 4x^{2} + 3x + 3 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 2\nu - 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - 2\nu^{2} - 3\nu + 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 2\beta _1 + 2 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} + 2\beta_{2} + 7\beta _1 + 2 \)
|
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 |
|
−1.89962 | 0.865008 | 1.60857 | −0.865008 | −1.64319 | 0 | 0.743565 | −2.25176 | 1.64319 | ||||||||||||||||||||||||||||||
| 1.2 | −0.133410 | −2.51347 | −1.98220 | 2.51347 | 0.335323 | 0 | 0.531267 | 3.31752 | −0.335323 | |||||||||||||||||||||||||||||||
| 1.3 | 1.66943 | 2.81202 | 0.786983 | −2.81202 | 4.69447 | 0 | −2.02504 | 4.90748 | −4.69447 | |||||||||||||||||||||||||||||||
| 1.4 | 2.36361 | −0.163564 | 3.58665 | 0.163564 | −0.386601 | 0 | 3.75021 | −2.97325 | 0.386601 | |||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(7\) | \( +1 \) |
| \(11\) | \( +1 \) |
| \(13\) | \( +1 \) |
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 | 7007.2.a.m | 4 | |
| 7.b | odd | 2 | 1 | 7007.2.a.l | 4 | ||
| 7.c | even | 3 | 2 | 1001.2.i.a | ✓ | 8 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 1001.2.i.a | ✓ | 8 | 7.c | even | 3 | 2 | |
| 7007.2.a.l | 4 | 7.b | odd | 2 | 1 | ||
| 7007.2.a.m | 4 | 1.a | even | 1 | 1 | trivial | |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(7007))\):
|
\( T_{2}^{4} - 2T_{2}^{3} - 4T_{2}^{2} + 7T_{2} + 1 \)
|
|
\( T_{3}^{4} - T_{3}^{3} - 7T_{3}^{2} + 5T_{3} + 1 \)
|
|
\( T_{5}^{4} + T_{5}^{3} - 7T_{5}^{2} - 5T_{5} + 1 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} - 2 T^{3} + \cdots + 1 \)
|
| $3$ |
\( T^{4} - T^{3} - 7 T^{2} + \cdots + 1 \)
|
| $5$ |
\( T^{4} + T^{3} - 7 T^{2} + \cdots + 1 \)
|
| $7$ |
\( T^{4} \)
|
| $11$ |
\( (T + 1)^{4} \)
|
| $13$ |
\( (T + 1)^{4} \)
|
| $17$ |
\( T^{4} - 9 T^{3} + \cdots - 21 \)
|
| $19$ |
\( T^{4} + 4 T^{3} + \cdots - 261 \)
|
| $23$ |
\( T^{4} - 6 T^{3} + \cdots - 27 \)
|
| $29$ |
\( T^{4} + 15 T^{3} + \cdots + 87 \)
|
| $31$ |
\( T^{4} + 10 T^{3} + \cdots - 1013 \)
|
| $37$ |
\( T^{4} - 9 T^{3} + \cdots - 311 \)
|
| $41$ |
\( T^{4} + 5 T^{3} + \cdots + 1 \)
|
| $43$ |
\( T^{4} - 7 T^{3} + \cdots - 1391 \)
|
| $47$ |
\( T^{4} + 2 T^{3} + \cdots + 7 \)
|
| $53$ |
\( T^{4} + 27 T^{3} + \cdots - 4431 \)
|
| $59$ |
\( T^{4} - 4 T^{3} + \cdots + 112 \)
|
| $61$ |
\( T^{4} - 19 T^{3} + \cdots - 423 \)
|
| $67$ |
\( T^{4} + T^{3} + \cdots + 279 \)
|
| $71$ |
\( T^{4} + 5 T^{3} + \cdots + 625 \)
|
| $73$ |
\( T^{4} - 2 T^{3} + \cdots - 309 \)
|
| $79$ |
\( T^{4} + 32 T^{3} + \cdots + 2293 \)
|
| $83$ |
\( T^{4} - 246 T^{2} + \cdots + 11421 \)
|
| $89$ |
\( T^{4} + 3 T^{3} + \cdots - 741 \)
|
| $97$ |
\( T^{4} - 3 T^{3} + \cdots + 13 \)
|
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