Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [725,2,Mod(1,725)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(725, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([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("725.1");
S:= CuspForms(chi, 2);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 725 = 5^{2} \cdot 29 \) |
| Weight: | \( k \) | \(=\) | \( 2 \) |
| Character orbit: | \([\chi]\) | \(=\) | 725.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: | \(5.78915414654\) |
| Analytic rank: | \(1\) |
| Dimension: | \(5\) |
| Coefficient field: | 5.5.240881.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{5} - 2x^{4} - 5x^{3} + 9x^{2} + 5x - 7 \)
|
| Coefficient ring: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| 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
\( x^{5} - 2x^{4} - 5x^{3} + 9x^{2} + 5x - 7 \)
:
| \(\beta_{1}\) | \(=\) |
\( \nu \)
|
| \(\beta_{2}\) | \(=\) |
\( \nu^{2} - 3 \)
|
| \(\beta_{3}\) | \(=\) |
\( \nu^{3} - \nu^{2} - 3\nu + 2 \)
|
| \(\beta_{4}\) | \(=\) |
\( \nu^{4} - \nu^{3} - 5\nu^{2} + 3\nu + 4 \)
|
| \(\nu\) | \(=\) |
\( \beta_1 \)
|
| \(\nu^{2}\) | \(=\) |
\( \beta_{2} + 3 \)
|
| \(\nu^{3}\) | \(=\) |
\( \beta_{3} + \beta_{2} + 3\beta _1 + 1 \)
|
| \(\nu^{4}\) | \(=\) |
\( \beta_{4} + \beta_{3} + 6\beta_{2} + 12 \)
|
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 |
|
−2.33090 | −0.318289 | 3.43308 | 0 | 0.741899 | −1.09271 | −3.34037 | −2.89869 | 0 | |||||||||||||||||||||||||||||||||
| 1.2 | −1.78154 | −3.10566 | 1.17387 | 0 | 5.53284 | −3.64565 | 1.47177 | 6.64510 | 0 | ||||||||||||||||||||||||||||||||||
| 1.3 | −0.838718 | 1.90376 | −1.29655 | 0 | −1.59672 | −2.46832 | 2.76488 | 0.624302 | 0 | ||||||||||||||||||||||||||||||||||
| 1.4 | 1.06634 | −3.37897 | −0.862915 | 0 | −3.60314 | 2.91576 | −3.05285 | 8.41742 | 0 | ||||||||||||||||||||||||||||||||||
| 1.5 | 1.88481 | −1.10085 | 1.55251 | 0 | −2.07489 | −1.70908 | −0.843434 | −1.78814 | 0 | ||||||||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(5\) | \(-1\) |
| \(29\) | \(-1\) |
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 | 725.2.a.h | ✓ | 5 |
| 3.b | odd | 2 | 1 | 6525.2.a.bq | 5 | ||
| 5.b | even | 2 | 1 | 725.2.a.k | yes | 5 | |
| 5.c | odd | 4 | 2 | 725.2.b.f | 10 | ||
| 15.d | odd | 2 | 1 | 6525.2.a.bm | 5 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 725.2.a.h | ✓ | 5 | 1.a | even | 1 | 1 | trivial |
| 725.2.a.k | yes | 5 | 5.b | even | 2 | 1 | |
| 725.2.b.f | 10 | 5.c | odd | 4 | 2 | ||
| 6525.2.a.bm | 5 | 15.d | odd | 2 | 1 | ||
| 6525.2.a.bq | 5 | 3.b | odd | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(725))\):
|
\( T_{2}^{5} + 2T_{2}^{4} - 5T_{2}^{3} - 9T_{2}^{2} + 5T_{2} + 7 \)
|
|
\( T_{3}^{5} + 6T_{3}^{4} + 5T_{3}^{3} - 21T_{3}^{2} - 29T_{3} - 7 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{5} + 2 T^{4} + \cdots + 7 \)
|
| $3$ |
\( T^{5} + 6 T^{4} + \cdots - 7 \)
|
| $5$ |
\( T^{5} \)
|
| $7$ |
\( T^{5} + 6 T^{4} + \cdots - 49 \)
|
| $11$ |
\( T^{5} + 2 T^{4} + \cdots + 307 \)
|
| $13$ |
\( T^{5} + 4 T^{4} + \cdots + 1 \)
|
| $17$ |
\( T^{5} + 9 T^{4} + \cdots + 439 \)
|
| $19$ |
\( T^{5} - 2 T^{4} + \cdots + 5 \)
|
| $23$ |
\( T^{5} + T^{4} + \cdots + 581 \)
|
| $29$ |
\( (T - 1)^{5} \)
|
| $31$ |
\( T^{5} + T^{4} + \cdots - 73 \)
|
| $37$ |
\( T^{5} + 14 T^{4} + \cdots + 63 \)
|
| $41$ |
\( T^{5} - 5 T^{4} + \cdots + 9 \)
|
| $43$ |
\( T^{5} + 28 T^{4} + \cdots - 22833 \)
|
| $47$ |
\( T^{5} + 15 T^{4} + \cdots - 2263 \)
|
| $53$ |
\( T^{5} - 8 T^{4} + \cdots - 863 \)
|
| $59$ |
\( T^{5} + 11 T^{4} + \cdots + 2205 \)
|
| $61$ |
\( T^{5} + 5 T^{4} + \cdots - 16381 \)
|
| $67$ |
\( T^{5} + 23 T^{4} + \cdots + 353 \)
|
| $71$ |
\( T^{5} + 5 T^{4} + \cdots + 2837 \)
|
| $73$ |
\( T^{5} + 16 T^{4} + \cdots - 9 \)
|
| $79$ |
\( T^{5} + 10 T^{4} + \cdots + 10035 \)
|
| $83$ |
\( T^{5} + 9 T^{4} + \cdots + 18113 \)
|
| $89$ |
\( T^{5} + 18 T^{4} + \cdots - 25 \)
|
| $97$ |
\( T^{5} + 23 T^{4} + \cdots + 196403 \)
|
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