Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [546,4,Mod(1,546)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(546, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 0]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("546.1");
S:= CuspForms(chi, 4);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 546 = 2 \cdot 3 \cdot 7 \cdot 13 \) |
| Weight: | \( k \) | \(=\) | \( 4 \) |
| Character orbit: | \([\chi]\) | \(=\) | 546.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: | \(32.2150428631\) |
| Analytic rank: | \(0\) |
| Dimension: | \(3\) |
| Coefficient field: | 3.3.7441.1 |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{3} - x^{2} - 22x - 16 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{11}]\) |
| Coefficient ring index: | \( 3^{3} \) |
| 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 \(1,\beta_1,\beta_2\) 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
\( x^{3} - x^{2} - 22x - 16 \)
:
| \(\beta_{1}\) | \(=\) |
\( 3\nu - 1 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( 9\nu^{2} - 21\nu - 128 ) / 2 \)
|
| \(\nu\) | \(=\) |
\( ( \beta _1 + 1 ) / 3 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( 2\beta_{2} + 7\beta _1 + 135 ) / 9 \)
|
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 |
|
−2.00000 | −3.00000 | 4.00000 | −14.2177 | 6.00000 | 7.00000 | −8.00000 | 9.00000 | 28.4354 | |||||||||||||||||||||||||||
| 1.2 | −2.00000 | −3.00000 | 4.00000 | −5.32759 | 6.00000 | 7.00000 | −8.00000 | 9.00000 | 10.6552 | ||||||||||||||||||||||||||||
| 1.3 | −2.00000 | −3.00000 | 4.00000 | 13.5453 | 6.00000 | 7.00000 | −8.00000 | 9.00000 | −27.0905 | ||||||||||||||||||||||||||||
Atkin-Lehner signs
| \( p \) | Sign |
|---|---|
| \(2\) | \(1\) |
| \(3\) | \(1\) |
| \(7\) | \(-1\) |
| \(13\) | \(-1\) |
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 | 546.4.a.l | ✓ | 3 |
| 3.b | odd | 2 | 1 | 1638.4.a.bd | 3 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 546.4.a.l | ✓ | 3 | 1.a | even | 1 | 1 | trivial |
| 1638.4.a.bd | 3 | 3.b | odd | 2 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{5}^{3} + 6T_{5}^{2} - 189T_{5} - 1026 \)
acting on \(S_{4}^{\mathrm{new}}(\Gamma_0(546))\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( (T + 2)^{3} \)
|
| $3$ |
\( (T + 3)^{3} \)
|
| $5$ |
\( T^{3} + 6 T^{2} + \cdots - 1026 \)
|
| $7$ |
\( (T - 7)^{3} \)
|
| $11$ |
\( T^{3} + 15 T^{2} + \cdots + 19224 \)
|
| $13$ |
\( (T - 13)^{3} \)
|
| $17$ |
\( T^{3} - 9 T^{2} + \cdots + 180792 \)
|
| $19$ |
\( T^{3} - 60 T^{2} + \cdots - 143108 \)
|
| $23$ |
\( T^{3} + 162 T^{2} + \cdots - 42336 \)
|
| $29$ |
\( T^{3} + 138 T^{2} + \cdots + 727758 \)
|
| $31$ |
\( T^{3} - 105 T^{2} + \cdots + 1022464 \)
|
| $37$ |
\( T^{3} + 309 T^{2} + \cdots - 2285864 \)
|
| $41$ |
\( T^{3} + 408 T^{2} + \cdots + 1532736 \)
|
| $43$ |
\( T^{3} - 330 T^{2} + \cdots - 2772476 \)
|
| $47$ |
\( T^{3} + 69 T^{2} + \cdots - 2336256 \)
|
| $53$ |
\( T^{3} + 57 T^{2} + \cdots - 5652396 \)
|
| $59$ |
\( T^{3} - 36 T^{2} + \cdots - 90878976 \)
|
| $61$ |
\( T^{3} - 1275 T^{2} + \cdots - 25150076 \)
|
| $67$ |
\( T^{3} - 1392 T^{2} + \cdots + 54716752 \)
|
| $71$ |
\( T^{3} - 1416 T^{2} + \cdots + 9345024 \)
|
| $73$ |
\( T^{3} - 744 T^{2} + \cdots + 1688158 \)
|
| $79$ |
\( T^{3} - 1275 T^{2} + \cdots + 255655216 \)
|
| $83$ |
\( T^{3} - 45 T^{2} + \cdots - 11641752 \)
|
| $89$ |
\( T^{3} - 189 T^{2} + \cdots + 401361156 \)
|
| $97$ |
\( T^{3} - 2409 T^{2} + \cdots + 72101764 \)
|
| show more | |
| show less |