Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [60,6,Mod(59,60)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(60, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 1, 1]))
N = Newforms(chi, 6, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("60.59");
S:= CuspForms(chi, 6);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 60 = 2^{2} \cdot 3 \cdot 5 \) |
| Weight: | \( k \) | \(=\) | \( 6 \) |
| Character orbit: | \([\chi]\) | \(=\) | 60.h (of order \(2\), degree \(1\), minimal) |
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: | no |
| Analytic conductor: | \(9.62302918878\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(\sqrt{-3}, \sqrt{5})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - x^{3} + 2x^{2} + x + 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 2^{2}\cdot 5^{2} \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{U}(1)[D_{2}]$ |
$q$-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
\( x^{4} - x^{3} + 2x^{2} + x + 1 \)
:
| \(\beta_{1}\) | \(=\) |
\( -\nu^{3} + 2\nu^{2} - 2\nu \)
|
| \(\beta_{2}\) | \(=\) |
\( -2\nu^{3} - \nu^{2} + \nu - 5 \)
|
| \(\beta_{3}\) | \(=\) |
\( 5\nu^{3} - 5\nu^{2} + 15\nu + 3 \)
|
| \(\nu\) | \(=\) |
\( ( \beta_{3} + \beta_{2} + 3\beta _1 + 2 ) / 10 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( \beta_{3} - \beta_{2} + 7\beta _1 - 8 ) / 10 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( -2\beta_{2} - \beta _1 - 10 ) / 5 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/60\mathbb{Z}\right)^\times\).
| \(n\) | \(31\) | \(37\) | \(41\) |
| \(\chi(n)\) | \(-1\) | \(-1\) | \(-1\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 59.1 |
|
−5.59017 | − | 0.866025i | − | 15.5885i | 30.5000 | + | 9.68246i | −55.9017 | −13.5000 | + | 87.1421i | 0 | −162.115 | − | 80.5404i | −243.000 | 312.500 | + | 48.4123i | |||||||||||||||||||
| 59.2 | −5.59017 | + | 0.866025i | 15.5885i | 30.5000 | − | 9.68246i | −55.9017 | −13.5000 | − | 87.1421i | 0 | −162.115 | + | 80.5404i | −243.000 | 312.500 | − | 48.4123i | |||||||||||||||||||||
| 59.3 | 5.59017 | − | 0.866025i | − | 15.5885i | 30.5000 | − | 9.68246i | 55.9017 | −13.5000 | − | 87.1421i | 0 | 162.115 | − | 80.5404i | −243.000 | 312.500 | − | 48.4123i | ||||||||||||||||||||
| 59.4 | 5.59017 | + | 0.866025i | 15.5885i | 30.5000 | + | 9.68246i | 55.9017 | −13.5000 | + | 87.1421i | 0 | 162.115 | + | 80.5404i | −243.000 | 312.500 | + | 48.4123i | |||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 15.d | odd | 2 | 1 | CM by \(\Q(\sqrt{-15}) \) |
| 3.b | odd | 2 | 1 | inner |
| 4.b | odd | 2 | 1 | inner |
| 5.b | even | 2 | 1 | inner |
| 12.b | even | 2 | 1 | inner |
| 20.d | odd | 2 | 1 | inner |
| 60.h | even | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 60.6.h.b | ✓ | 4 |
| 3.b | odd | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| 4.b | odd | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| 5.b | even | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| 12.b | even | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| 15.d | odd | 2 | 1 | CM | 60.6.h.b | ✓ | 4 |
| 20.d | odd | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| 60.h | even | 2 | 1 | inner | 60.6.h.b | ✓ | 4 |
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 60.6.h.b | ✓ | 4 | 1.a | even | 1 | 1 | trivial |
| 60.6.h.b | ✓ | 4 | 3.b | odd | 2 | 1 | inner |
| 60.6.h.b | ✓ | 4 | 4.b | odd | 2 | 1 | inner |
| 60.6.h.b | ✓ | 4 | 5.b | even | 2 | 1 | inner |
| 60.6.h.b | ✓ | 4 | 12.b | even | 2 | 1 | inner |
| 60.6.h.b | ✓ | 4 | 15.d | odd | 2 | 1 | CM |
| 60.6.h.b | ✓ | 4 | 20.d | odd | 2 | 1 | inner |
| 60.6.h.b | ✓ | 4 | 60.h | even | 2 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{7} \)
acting on \(S_{6}^{\mathrm{new}}(60, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} - 61T^{2} + 1024 \)
|
| $3$ |
\( (T^{2} + 243)^{2} \)
|
| $5$ |
\( (T^{2} - 3125)^{2} \)
|
| $7$ |
\( T^{4} \)
|
| $11$ |
\( T^{4} \)
|
| $13$ |
\( T^{4} \)
|
| $17$ |
\( (T^{2} - 420500)^{2} \)
|
| $19$ |
\( (T^{2} + 5221500)^{2} \)
|
| $23$ |
\( (T^{2} + 23823372)^{2} \)
|
| $29$ |
\( T^{4} \)
|
| $31$ |
\( (T^{2} + 48061500)^{2} \)
|
| $37$ |
\( T^{4} \)
|
| $41$ |
\( T^{4} \)
|
| $43$ |
\( T^{4} \)
|
| $47$ |
\( (T^{2} + 770498028)^{2} \)
|
| $53$ |
\( (T^{2} - 1672620500)^{2} \)
|
| $59$ |
\( T^{4} \)
|
| $61$ |
\( (T + 34802)^{4} \)
|
| $67$ |
\( T^{4} \)
|
| $71$ |
\( T^{4} \)
|
| $73$ |
\( T^{4} \)
|
| $79$ |
\( (T^{2} + 7399261500)^{2} \)
|
| $83$ |
\( (T^{2} + 10520314572)^{2} \)
|
| $89$ |
\( T^{4} \)
|
| $97$ |
\( T^{4} \)
|
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