Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [126,10,Mod(37,126)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(126, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([0, 2]))
N = Newforms(chi, 10, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("126.37");
S:= CuspForms(chi, 10);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 126 = 2 \cdot 3^{2} \cdot 7 \) |
| Weight: | \( k \) | \(=\) | \( 10 \) |
| Character orbit: | \([\chi]\) | \(=\) | 126.g (of order \(3\), 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: | \(64.8945153566\) |
| 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: | \(\Z[a_1, \ldots, a_{5}]\) |
| Coefficient ring index: | \( 1 \) |
| Twist minimal: | no (minimal twist has level 42) |
| 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 \(\left(\mathbb{Z}/126\mathbb{Z}\right)^\times\).
| \(n\) | \(29\) | \(73\) |
| \(\chi(n)\) | \(1\) | \(-1 + \zeta_{6}\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 37.1 |
|
−8.00000 | + | 13.8564i | 0 | −128.000 | − | 221.703i | 601.500 | − | 1041.83i | 0 | 6002.50 | + | 2079.33i | 4096.00 | 0 | 9624.00 | + | 16669.3i | ||||||||||||||
| 109.1 | −8.00000 | − | 13.8564i | 0 | −128.000 | + | 221.703i | 601.500 | + | 1041.83i | 0 | 6002.50 | − | 2079.33i | 4096.00 | 0 | 9624.00 | − | 16669.3i | |||||||||||||||
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 | 126.10.g.a | 2 | |
| 3.b | odd | 2 | 1 | 42.10.e.a | ✓ | 2 | |
| 7.c | even | 3 | 1 | inner | 126.10.g.a | 2 | |
| 21.g | even | 6 | 1 | 294.10.a.b | 1 | ||
| 21.h | odd | 6 | 1 | 42.10.e.a | ✓ | 2 | |
| 21.h | odd | 6 | 1 | 294.10.a.g | 1 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 42.10.e.a | ✓ | 2 | 3.b | odd | 2 | 1 | |
| 42.10.e.a | ✓ | 2 | 21.h | odd | 6 | 1 | |
| 126.10.g.a | 2 | 1.a | even | 1 | 1 | trivial | |
| 126.10.g.a | 2 | 7.c | even | 3 | 1 | inner | |
| 294.10.a.b | 1 | 21.g | even | 6 | 1 | ||
| 294.10.a.g | 1 | 21.h | odd | 6 | 1 | ||
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{5}^{2} - 1203T_{5} + 1447209 \)
acting on \(S_{10}^{\mathrm{new}}(126, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{2} + 16T + 256 \)
|
| $3$ |
\( T^{2} \)
|
| $5$ |
\( T^{2} - 1203 T + 1447209 \)
|
| $7$ |
\( T^{2} - 12005 T + 40353607 \)
|
| $11$ |
\( T^{2} + 19917 T + 396686889 \)
|
| $13$ |
\( (T - 147836)^{2} \)
|
| $17$ |
\( T^{2} + \cdots + 70458393600 \)
|
| $19$ |
\( T^{2} + \cdots + 11664864016 \)
|
| $23$ |
\( T^{2} + \cdots + 628785561600 \)
|
| $29$ |
\( (T + 3143289)^{2} \)
|
| $31$ |
\( T^{2} + \cdots + 3454241556481 \)
|
| $37$ |
\( T^{2} + \cdots + 283224396049984 \)
|
| $41$ |
\( (T + 20640480)^{2} \)
|
| $43$ |
\( (T - 32158550)^{2} \)
|
| $47$ |
\( T^{2} + \cdots + 14\!\cdots\!76 \)
|
| $53$ |
\( T^{2} + \cdots + 29\!\cdots\!89 \)
|
| $59$ |
\( T^{2} + \cdots + 21\!\cdots\!09 \)
|
| $61$ |
\( T^{2} + \cdots + 29\!\cdots\!00 \)
|
| $67$ |
\( T^{2} + \cdots + 66\!\cdots\!00 \)
|
| $71$ |
\( (T - 172761126)^{2} \)
|
| $73$ |
\( T^{2} + \cdots + 14\!\cdots\!84 \)
|
| $79$ |
\( T^{2} + \cdots + 85\!\cdots\!01 \)
|
| $83$ |
\( (T + 31861191)^{2} \)
|
| $89$ |
\( T^{2} + \cdots + 74\!\cdots\!56 \)
|
| $97$ |
\( (T - 1482720959)^{2} \)
|
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