Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [8470,2,Mod(1,8470)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(8470, 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("8470.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 8470 = 2 \cdot 5 \cdot 7 \cdot 11^{2} \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 8470.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: | \(67.6332905120\) |
| Analytic rank: | \(0\) |
| Dimension: | \(6\) |
| Coefficient field: | 6.6.19898000.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{6} - x^{5} - 10x^{4} + 7x^{3} + 24x^{2} - 15x - 5 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{13}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 770) |
| 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 \(1,\beta_1,\ldots,\beta_{5}\) 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
\( x^{6} - x^{5} - 10x^{4} + 7x^{3} + 24x^{2} - 15x - 5 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( ( \nu^{4} - 2\nu^{3} - 5\nu^{2} + 8\nu - 1 ) / 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( ( -\nu^{4} + 2\nu^{3} + 7\nu^{2} - 8\nu - 7 ) / 2 \)
|
| \(\beta_{4}\) | \(=\) |
\( ( \nu^{5} - 2\nu^{4} - 5\nu^{3} + 8\nu^{2} - \nu ) / 2 \)
|
| \(\beta_{5}\) | \(=\) |
\( ( -\nu^{5} + 2\nu^{4} + 7\nu^{3} - 10\nu^{2} - 9\nu + 6 ) / 2 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{3} + \beta_{2} + 4 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{5} + \beta_{4} + \beta_{3} + \beta_{2} + 5\beta _1 + 1 \)
|
| \(\nu^{4}\) | \(=\) |
\( 2\beta_{5} + 2\beta_{4} + 7\beta_{3} + 9\beta_{2} + 2\beta _1 + 23 \)
|
| \(\nu^{5}\) | \(=\) |
\( 9\beta_{5} + 11\beta_{4} + 11\beta_{3} + 15\beta_{2} + 30\beta _1 + 19 \)
|
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 |
|
1.00000 | −2.86564 | 1.00000 | 1.00000 | −2.86564 | −1.00000 | 1.00000 | 5.21187 | 1.00000 | ||||||||||||||||||||||||||||||||||||
| 1.2 | 1.00000 | −1.68692 | 1.00000 | 1.00000 | −1.68692 | −1.00000 | 1.00000 | −0.154300 | 1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.3 | 1.00000 | −0.935683 | 1.00000 | 1.00000 | −0.935683 | −1.00000 | 1.00000 | −2.12450 | 1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.4 | 1.00000 | 0.245893 | 1.00000 | 1.00000 | 0.245893 | −1.00000 | 1.00000 | −2.93954 | 1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.5 | 1.00000 | 2.05906 | 1.00000 | 1.00000 | 2.05906 | −1.00000 | 1.00000 | 1.23973 | 1.00000 | |||||||||||||||||||||||||||||||||||||
| 1.6 | 1.00000 | 2.18328 | 1.00000 | 1.00000 | 2.18328 | −1.00000 | 1.00000 | 1.76673 | 1.00000 | |||||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(-1\) |
| \(5\) | \(-1\) |
| \(7\) | \(1\) |
| \(11\) | \(-1\) |
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 | 8470.2.a.dc | 6 | |
| 11.b | odd | 2 | 1 | 8470.2.a.cw | 6 | ||
| 11.d | odd | 10 | 2 | 770.2.n.j | ✓ | 12 | |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 770.2.n.j | ✓ | 12 | 11.d | odd | 10 | 2 | |
| 8470.2.a.cw | 6 | 11.b | odd | 2 | 1 | ||
| 8470.2.a.dc | 6 | 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 \(S_{2}^{\mathrm{new}}(\Gamma_0(8470))\):
|
\( T_{3}^{6} + T_{3}^{5} - 10T_{3}^{4} - 7T_{3}^{3} + 24T_{3}^{2} + 15T_{3} - 5 \)
|
|
\( T_{13}^{6} - 9T_{13}^{5} + 15T_{13}^{4} + 44T_{13}^{3} - 138T_{13}^{2} + 88T_{13} + 4 \)
|
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\( T_{17}^{6} - 9T_{17}^{5} - 50T_{17}^{4} + 581T_{17}^{3} - 42T_{17}^{2} - 8421T_{17} + 14431 \)
|
|
\( T_{19}^{6} - 12T_{19}^{5} + 23T_{19}^{4} + 144T_{19}^{3} - 635T_{19}^{2} + 846T_{19} - 356 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T - 1)^{6} \)
|
| $3$ |
\( T^{6} + T^{5} - 10 T^{4} + \cdots - 5 \)
|
| $5$ |
\( (T - 1)^{6} \)
|
| $7$ |
\( (T + 1)^{6} \)
|
| $11$ |
\( T^{6} \)
|
| $13$ |
\( T^{6} - 9 T^{5} + \cdots + 4 \)
|
| $17$ |
\( T^{6} - 9 T^{5} + \cdots + 14431 \)
|
| $19$ |
\( T^{6} - 12 T^{5} + \cdots - 356 \)
|
| $23$ |
\( T^{6} - 4 T^{5} + \cdots - 2624 \)
|
| $29$ |
\( T^{6} - 15 T^{5} + \cdots + 1796 \)
|
| $31$ |
\( T^{6} - 8 T^{5} + \cdots + 80 \)
|
| $37$ |
\( T^{6} + 4 T^{5} + \cdots + 2416 \)
|
| $41$ |
\( T^{6} - 4 T^{5} + \cdots + 23056 \)
|
| $43$ |
\( T^{6} - 30 T^{5} + \cdots - 45004 \)
|
| $47$ |
\( T^{6} + 7 T^{5} + \cdots - 4400 \)
|
| $53$ |
\( T^{6} + 6 T^{5} + \cdots - 1216 \)
|
| $59$ |
\( T^{6} - 4 T^{5} + \cdots - 284 \)
|
| $61$ |
\( T^{6} + 14 T^{5} + \cdots - 6416 \)
|
| $67$ |
\( T^{6} - 18 T^{5} + \cdots - 44 \)
|
| $71$ |
\( T^{6} - 23 T^{5} + \cdots + 12724 \)
|
| $73$ |
\( T^{6} - 23 T^{5} + \cdots + 55 \)
|
| $79$ |
\( T^{6} - 21 T^{5} + \cdots + 26356 \)
|
| $83$ |
\( T^{6} - 25 T^{5} + \cdots + 80351 \)
|
| $89$ |
\( T^{6} + 18 T^{5} + \cdots - 2420 \)
|
| $97$ |
\( T^{6} - 7 T^{5} + \cdots - 89129 \)
|
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