Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [147,6,Mod(67,147)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(147, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([0, 4]))
N = Newforms(chi, 6, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("147.67");
S:= CuspForms(chi, 6);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 147 = 3 \cdot 7^{2} \) |
| Weight: | \( k \) | \(=\) | \( 6 \) |
| Character orbit: | \([\chi]\) | \(=\) | 147.e (of order \(3\), degree \(2\), not 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: | \(23.5764215125\) |
| 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: | \(\Z[a_1, a_2]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 21) |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{3}]$ |
$q$-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 \(\left(\mathbb{Z}/147\mathbb{Z}\right)^\times\).
| \(n\) | \(50\) | \(52\) |
| \(\chi(n)\) | \(1\) | \(-\zeta_{6}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 67.1 |
|
−0.500000 | − | 0.866025i | −4.50000 | + | 7.79423i | 15.5000 | − | 26.8468i | −17.0000 | − | 29.4449i | 9.00000 | 0 | −63.0000 | −40.5000 | − | 70.1481i | −17.0000 | + | 29.4449i | ||||||||||||
| 79.1 | −0.500000 | + | 0.866025i | −4.50000 | − | 7.79423i | 15.5000 | + | 26.8468i | −17.0000 | + | 29.4449i | 9.00000 | 0 | −63.0000 | −40.5000 | + | 70.1481i | −17.0000 | − | 29.4449i | |||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 7.c | even | 3 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 147.6.e.e | 2 | |
| 7.b | odd | 2 | 1 | 147.6.e.f | 2 | ||
| 7.c | even | 3 | 1 | 147.6.a.e | 1 | ||
| 7.c | even | 3 | 1 | inner | 147.6.e.e | 2 | |
| 7.d | odd | 6 | 1 | 21.6.a.b | ✓ | 1 | |
| 7.d | odd | 6 | 1 | 147.6.e.f | 2 | ||
| 21.g | even | 6 | 1 | 63.6.a.c | 1 | ||
| 21.h | odd | 6 | 1 | 441.6.a.d | 1 | ||
| 28.f | even | 6 | 1 | 336.6.a.l | 1 | ||
| 35.i | odd | 6 | 1 | 525.6.a.c | 1 | ||
| 35.k | even | 12 | 2 | 525.6.d.d | 2 | ||
| 84.j | odd | 6 | 1 | 1008.6.a.t | 1 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 21.6.a.b | ✓ | 1 | 7.d | odd | 6 | 1 | |
| 63.6.a.c | 1 | 21.g | even | 6 | 1 | ||
| 147.6.a.e | 1 | 7.c | even | 3 | 1 | ||
| 147.6.e.e | 2 | 1.a | even | 1 | 1 | trivial | |
| 147.6.e.e | 2 | 7.c | even | 3 | 1 | inner | |
| 147.6.e.f | 2 | 7.b | odd | 2 | 1 | ||
| 147.6.e.f | 2 | 7.d | odd | 6 | 1 | ||
| 336.6.a.l | 1 | 28.f | even | 6 | 1 | ||
| 441.6.a.d | 1 | 21.h | odd | 6 | 1 | ||
| 525.6.a.c | 1 | 35.i | odd | 6 | 1 | ||
| 525.6.d.d | 2 | 35.k | even | 12 | 2 | ||
| 1008.6.a.t | 1 | 84.j | odd | 6 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{6}^{\mathrm{new}}(147, [\chi])\):
|
\( T_{2}^{2} + T_{2} + 1 \)
|
|
\( T_{5}^{2} + 34T_{5} + 1156 \)
|
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{2} + T + 1 \)
|
| $3$ |
\( T^{2} + 9T + 81 \)
|
| $5$ |
\( T^{2} + 34T + 1156 \)
|
| $7$ |
\( T^{2} \)
|
| $11$ |
\( T^{2} - 340T + 115600 \)
|
| $13$ |
\( (T + 454)^{2} \)
|
| $17$ |
\( T^{2} + 798T + 636804 \)
|
| $19$ |
\( T^{2} - 892T + 795664 \)
|
| $23$ |
\( T^{2} - 3192 T + 10188864 \)
|
| $29$ |
\( (T + 8242)^{2} \)
|
| $31$ |
\( T^{2} + 2496 T + 6230016 \)
|
| $37$ |
\( T^{2} + 9798 T + 96000804 \)
|
| $41$ |
\( (T + 19834)^{2} \)
|
| $43$ |
\( (T + 17236)^{2} \)
|
| $47$ |
\( T^{2} - 8928 T + 79709184 \)
|
| $53$ |
\( T^{2} + 150T + 22500 \)
|
| $59$ |
\( T^{2} + \cdots + 1797420816 \)
|
| $61$ |
\( T^{2} - 14758 T + 217798564 \)
|
| $67$ |
\( T^{2} - 1676 T + 2808976 \)
|
| $71$ |
\( (T - 14568)^{2} \)
|
| $73$ |
\( T^{2} + \cdots + 6143110884 \)
|
| $79$ |
\( T^{2} - 2272 T + 5161984 \)
|
| $83$ |
\( (T - 37764)^{2} \)
|
| $89$ |
\( T^{2} + \cdots + 13756005796 \)
|
| $97$ |
\( (T + 10002)^{2} \)
|
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