Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [1100,6,Mod(749,1100)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1100, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 1, 0]))
N = Newforms(chi, 6, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("1100.749");
S:= CuspForms(chi, 6);
N := Newforms(S);
| Level: | \( N \) | \(=\) | \( 1100 = 2^{2} \cdot 5^{2} \cdot 11 \) |
| Weight: | \( k \) | \(=\) | \( 6 \) |
| Character orbit: | \([\chi]\) | \(=\) | 1100.b (of order \(2\), degree \(1\), 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: | \(176.422201794\) |
| Analytic rank: | \(0\) |
| Dimension: | \(4\) |
| Coefficient field: | \(\Q(i, \sqrt{31})\) |
|
comment: defining polynomial
gp: f.mod \\ as an extension of the character field
|
|
| Defining polynomial: |
\( x^{4} - 15x^{2} + 64 \)
|
| Coefficient ring: | \(\Z[a_1, \ldots, a_{7}]\) |
| Coefficient ring index: | \( 2^{6} \) |
| Twist minimal: | no (minimal twist has level 44) |
| Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-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
\( x^{4} - 15x^{2} + 64 \)
:
| \(\beta_{1}\) | \(=\) |
\( ( \nu^{3} - 7\nu ) / 8 \)
|
| \(\beta_{2}\) | \(=\) |
\( ( -\nu^{3} + 23\nu ) / 2 \)
|
| \(\beta_{3}\) | \(=\) |
\( 8\nu^{2} - 60 \)
|
| \(\nu\) | \(=\) |
\( ( \beta_{2} + 4\beta_1 ) / 8 \)
|
| \(\nu^{2}\) | \(=\) |
\( ( \beta_{3} + 60 ) / 8 \)
|
| \(\nu^{3}\) | \(=\) |
\( ( 7\beta_{2} + 92\beta_1 ) / 8 \)
|
Character values
We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1100\mathbb{Z}\right)^\times\).
| \(n\) | \(101\) | \(177\) | \(551\) |
| \(\chi(n)\) | \(1\) | \(-1\) | \(1\) |
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 | \(\iota_m(\nu)\) | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 749.1 |
|
0 | − | 25.2711i | 0 | 0 | 0 | − | 200.813i | 0 | −395.626 | 0 | ||||||||||||||||||||||||||||
| 749.2 | 0 | − | 19.2711i | 0 | 0 | 0 | 67.1868i | 0 | −128.374 | 0 | ||||||||||||||||||||||||||||||
| 749.3 | 0 | 19.2711i | 0 | 0 | 0 | − | 67.1868i | 0 | −128.374 | 0 | ||||||||||||||||||||||||||||||
| 749.4 | 0 | 25.2711i | 0 | 0 | 0 | 200.813i | 0 | −395.626 | 0 | |||||||||||||||||||||||||||||||
Inner twists
| Char | Parity | Ord | Mult | Type |
|---|---|---|---|---|
| 1.a | even | 1 | 1 | trivial |
| 5.b | even | 2 | 1 | inner |
Twists
| By twisting character orbit | |||||||
|---|---|---|---|---|---|---|---|
| Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
| 1.a | even | 1 | 1 | trivial | 1100.6.b.c | 4 | |
| 5.b | even | 2 | 1 | inner | 1100.6.b.c | 4 | |
| 5.c | odd | 4 | 1 | 44.6.a.b | ✓ | 2 | |
| 5.c | odd | 4 | 1 | 1100.6.a.b | 2 | ||
| 15.e | even | 4 | 1 | 396.6.a.f | 2 | ||
| 20.e | even | 4 | 1 | 176.6.a.g | 2 | ||
| 40.i | odd | 4 | 1 | 704.6.a.n | 2 | ||
| 40.k | even | 4 | 1 | 704.6.a.m | 2 | ||
| 55.e | even | 4 | 1 | 484.6.a.d | 2 | ||
| By twisted newform orbit | |||||||
|---|---|---|---|---|---|---|---|
| Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
| 44.6.a.b | ✓ | 2 | 5.c | odd | 4 | 1 | |
| 176.6.a.g | 2 | 20.e | even | 4 | 1 | ||
| 396.6.a.f | 2 | 15.e | even | 4 | 1 | ||
| 484.6.a.d | 2 | 55.e | even | 4 | 1 | ||
| 704.6.a.m | 2 | 40.k | even | 4 | 1 | ||
| 704.6.a.n | 2 | 40.i | odd | 4 | 1 | ||
| 1100.6.a.b | 2 | 5.c | odd | 4 | 1 | ||
| 1100.6.b.c | 4 | 1.a | even | 1 | 1 | trivial | |
| 1100.6.b.c | 4 | 5.b | even | 2 | 1 | inner | |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator
\( T_{3}^{4} + 1010T_{3}^{2} + 237169 \)
acting on \(S_{6}^{\mathrm{new}}(1100, [\chi])\).
Hecke characteristic polynomials
| $p$ | $F_p(T)$ |
|---|---|
| $2$ |
\( T^{4} \)
|
| $3$ |
\( T^{4} + 1010 T^{2} + 237169 \)
|
| $5$ |
\( T^{4} \)
|
| $7$ |
\( T^{4} + 44840 T^{2} + 182034064 \)
|
| $11$ |
\( (T + 121)^{4} \)
|
| $13$ |
\( T^{4} + \cdots + 134730107136 \)
|
| $17$ |
\( T^{4} + \cdots + 1192070912400 \)
|
| $19$ |
\( (T^{2} + 1944 T + 468128)^{2} \)
|
| $23$ |
\( T^{4} + \cdots + 1149940956609 \)
|
| $29$ |
\( (T^{2} - 6576 T + 7793280)^{2} \)
|
| $31$ |
\( (T^{2} - 2498 T - 66709935)^{2} \)
|
| $37$ |
\( T^{4} + \cdots + 24\!\cdots\!69 \)
|
| $41$ |
\( (T^{2} + 6504 T - 102278880)^{2} \)
|
| $43$ |
\( T^{4} + \cdots + 29\!\cdots\!00 \)
|
| $47$ |
\( T^{4} + \cdots + 41\!\cdots\!00 \)
|
| $53$ |
\( T^{4} + \cdots + 42\!\cdots\!56 \)
|
| $59$ |
\( (T^{2} + 12126 T - 132983631)^{2} \)
|
| $61$ |
\( (T^{2} - 73128 T + 1180267472)^{2} \)
|
| $67$ |
\( T^{4} + \cdots + 16\!\cdots\!25 \)
|
| $71$ |
\( (T^{2} + 46122 T + 83226825)^{2} \)
|
| $73$ |
\( T^{4} + \cdots + 89\!\cdots\!16 \)
|
| $79$ |
\( (T^{2} - 14780 T - 305436284)^{2} \)
|
| $83$ |
\( T^{4} + \cdots + 11\!\cdots\!00 \)
|
| $89$ |
\( (T^{2} - 33698 T + 74328801)^{2} \)
|
| $97$ |
\( T^{4} + \cdots + 11\!\cdots\!69 \)
|
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