Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [104,3,Mod(43,104)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(104, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([3, 3, 1]))
N = Newforms(chi, 3, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("104.43");
S:= CuspForms(chi, 3);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 104 = 2^{3} \cdot 13 \) |
| Weight: | \( k \) | \(=\) | \( 3 \) |
| Character orbit: | \([\chi]\) | \(=\) | 104.p (of order \(6\), degree \(2\), 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: | \(2.83379474935\) |
| Analytic rank: | \(0\) |
| Dimension: | \(2\) |
| Coefficient field: | \(\Q(\sqrt{-3}) \) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{2} - x + 1 \)
|
| Coefficient ring: | \(\Z[a_1, a_2, a_3]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | yes |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{6}]$ |
$q$-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 primitive root of unity \(\zeta_{6}\). We also show the integral \(q\)-expansion of the trace form.
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/104\mathbb{Z}\right)^\times\).
| \(n\) | \(41\) | \(53\) | \(79\) |
| \(\chi(n)\) | \(\zeta_{6}\) | \(-1\) | \(-1\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 43.1 |
|
−1.00000 | − | 1.73205i | −0.500000 | + | 0.866025i | −2.00000 | + | 3.46410i | −2.00000 | 2.00000 | 2.50000 | + | 4.33013i | 8.00000 | 4.00000 | + | 6.92820i | 2.00000 | + | 3.46410i | ||||||||||||
| 75.1 | −1.00000 | + | 1.73205i | −0.500000 | − | 0.866025i | −2.00000 | − | 3.46410i | −2.00000 | 2.00000 | 2.50000 | − | 4.33013i | 8.00000 | 4.00000 | − | 6.92820i | 2.00000 | − | 3.46410i | |||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 104.p | odd | 6 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 104.3.p.b | yes | 2 |
| 4.b | odd | 2 | 1 | 416.3.x.a | 2 | ||
| 8.b | even | 2 | 1 | 416.3.x.b | 2 | ||
| 8.d | odd | 2 | 1 | 104.3.p.a | ✓ | 2 | |
| 13.e | even | 6 | 1 | 104.3.p.a | ✓ | 2 | |
| 52.i | odd | 6 | 1 | 416.3.x.b | 2 | ||
| 104.p | odd | 6 | 1 | inner | 104.3.p.b | yes | 2 |
| 104.s | even | 6 | 1 | 416.3.x.a | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 104.3.p.a | ✓ | 2 | 8.d | odd | 2 | 1 | |
| 104.3.p.a | ✓ | 2 | 13.e | even | 6 | 1 | |
| 104.3.p.b | yes | 2 | 1.a | even | 1 | 1 | trivial |
| 104.3.p.b | yes | 2 | 104.p | odd | 6 | 1 | inner |
| 416.3.x.a | 2 | 4.b | odd | 2 | 1 | ||
| 416.3.x.a | 2 | 104.s | even | 6 | 1 | ||
| 416.3.x.b | 2 | 8.b | even | 2 | 1 | ||
| 416.3.x.b | 2 | 52.i | odd | 6 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{3}^{\mathrm{new}}(104, [\chi])\):
|
\( T_{3}^{2} + T_{3} + 1 \)
|
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\( T_{5} + 2 \)
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Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{2} + 2T + 4 \)
|
| $3$ |
\( T^{2} + T + 1 \)
|
| $5$ |
\( (T + 2)^{2} \)
|
| $7$ |
\( T^{2} - 5T + 25 \)
|
| $11$ |
\( T^{2} - 21T + 147 \)
|
| $13$ |
\( (T + 13)^{2} \)
|
| $17$ |
\( T^{2} - 25T + 625 \)
|
| $19$ |
\( T^{2} - 21T + 147 \)
|
| $23$ |
\( T^{2} - 15T + 75 \)
|
| $29$ |
\( T^{2} + 39T + 507 \)
|
| $31$ |
\( (T - 10)^{2} \)
|
| $37$ |
\( T^{2} + 61T + 3721 \)
|
| $41$ |
\( T^{2} - 3T + 3 \)
|
| $43$ |
\( T^{2} + 41T + 1681 \)
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| $47$ |
\( (T - 82)^{2} \)
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| $53$ |
\( T^{2} + 1728 \)
|
| $59$ |
\( T^{2} - 93T + 2883 \)
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| $61$ |
\( T^{2} - 105T + 3675 \)
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| $67$ |
\( T^{2} - 21T + 147 \)
|
| $71$ |
\( T^{2} - 29T + 841 \)
|
| $73$ |
\( T^{2} + 1728 \)
|
| $79$ |
\( T^{2} + 15552 \)
|
| $83$ |
\( T^{2} \)
|
| $89$ |
\( T^{2} + 69T + 1587 \)
|
| $97$ |
\( T^{2} - 3T + 3 \)
|
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