Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [330,2,Mod(7,330)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(330, base_ring=CyclotomicField(20))
chi = DirichletCharacter(H, H._module([0, 5, 14]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("330.7");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 330 = 2 \cdot 3 \cdot 5 \cdot 11 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 330.u (of order \(20\), degree \(8\), 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: | \(2.63506326670\) |
Analytic rank: | \(0\) |
Dimension: | \(48\) |
Relative dimension: | \(6\) over \(\Q(\zeta_{20})\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{20}]$ |
$q$-expansion
The dimension is sufficiently large that we do not compute an algebraic \(q\)-expansion, but we have computed the trace expansion.
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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
7.1 | −0.987688 | + | 0.156434i | −0.453990 | − | 0.891007i | 0.951057 | − | 0.309017i | −1.68341 | − | 1.47177i | 0.587785 | + | 0.809017i | 4.48144 | + | 2.28341i | −0.891007 | + | 0.453990i | −0.587785 | + | 0.809017i | 1.89292 | + | 1.19031i |
7.2 | −0.987688 | + | 0.156434i | −0.453990 | − | 0.891007i | 0.951057 | − | 0.309017i | 1.00148 | − | 1.99926i | 0.587785 | + | 0.809017i | −4.02901 | − | 2.05288i | −0.891007 | + | 0.453990i | −0.587785 | + | 0.809017i | −0.676398 | + | 2.13131i |
7.3 | −0.987688 | + | 0.156434i | −0.453990 | − | 0.891007i | 0.951057 | − | 0.309017i | 2.22967 | − | 0.169023i | 0.587785 | + | 0.809017i | 2.21628 | + | 1.12925i | −0.891007 | + | 0.453990i | −0.587785 | + | 0.809017i | −2.17578 | + | 0.515739i |
7.4 | 0.987688 | − | 0.156434i | 0.453990 | + | 0.891007i | 0.951057 | − | 0.309017i | −1.82626 | + | 1.29026i | 0.587785 | + | 0.809017i | 2.17264 | + | 1.10702i | 0.891007 | − | 0.453990i | −0.587785 | + | 0.809017i | −1.60193 | + | 1.56007i |
7.5 | 0.987688 | − | 0.156434i | 0.453990 | + | 0.891007i | 0.951057 | − | 0.309017i | 1.47176 | + | 1.68342i | 0.587785 | + | 0.809017i | 0.0261104 | + | 0.0133039i | 0.891007 | − | 0.453990i | −0.587785 | + | 0.809017i | 1.71699 | + | 1.43246i |
7.6 | 0.987688 | − | 0.156434i | 0.453990 | + | 0.891007i | 0.951057 | − | 0.309017i | 1.70887 | − | 1.44214i | 0.587785 | + | 0.809017i | −0.631390 | − | 0.321709i | 0.891007 | − | 0.453990i | −0.587785 | + | 0.809017i | 1.46223 | − | 1.69171i |
13.1 | −0.891007 | + | 0.453990i | 0.987688 | + | 0.156434i | 0.587785 | − | 0.809017i | −1.74269 | + | 1.40108i | −0.951057 | + | 0.309017i | −0.171084 | − | 1.08018i | −0.156434 | + | 0.987688i | 0.951057 | + | 0.309017i | 0.916674 | − | 2.03954i |
13.2 | −0.891007 | + | 0.453990i | 0.987688 | + | 0.156434i | 0.587785 | − | 0.809017i | 1.39507 | + | 1.74751i | −0.951057 | + | 0.309017i | 0.526761 | + | 3.32584i | −0.156434 | + | 0.987688i | 0.951057 | + | 0.309017i | −2.03637 | − | 0.923695i |
13.3 | −0.891007 | + | 0.453990i | 0.987688 | + | 0.156434i | 0.587785 | − | 0.809017i | 2.16998 | + | 0.539605i | −0.951057 | + | 0.309017i | −0.726828 | − | 4.58901i | −0.156434 | + | 0.987688i | 0.951057 | + | 0.309017i | −2.17844 | + | 0.504360i |
13.4 | 0.891007 | − | 0.453990i | −0.987688 | − | 0.156434i | 0.587785 | − | 0.809017i | −1.55378 | + | 1.60803i | −0.951057 | + | 0.309017i | −0.802616 | − | 5.06752i | 0.156434 | − | 0.987688i | 0.951057 | + | 0.309017i | −0.654401 | + | 2.13817i |
13.5 | 0.891007 | − | 0.453990i | −0.987688 | − | 0.156434i | 0.587785 | − | 0.809017i | −0.169260 | + | 2.22965i | −0.951057 | + | 0.309017i | 0.617156 | + | 3.89657i | 0.156434 | − | 0.987688i | 0.951057 | + | 0.309017i | 0.861430 | + | 2.06348i |
13.6 | 0.891007 | − | 0.453990i | −0.987688 | − | 0.156434i | 0.587785 | − | 0.809017i | 2.07626 | − | 0.830158i | −0.951057 | + | 0.309017i | 0.320542 | + | 2.02382i | 0.156434 | − | 0.987688i | 0.951057 | + | 0.309017i | 1.47307 | − | 1.68228i |
73.1 | −0.156434 | − | 0.987688i | 0.891007 | − | 0.453990i | −0.951057 | + | 0.309017i | −2.23336 | + | 0.109924i | −0.587785 | − | 0.809017i | 1.66666 | − | 3.27101i | 0.453990 | + | 0.891007i | 0.587785 | − | 0.809017i | 0.457946 | + | 2.18867i |
73.2 | −0.156434 | − | 0.987688i | 0.891007 | − | 0.453990i | −0.951057 | + | 0.309017i | 0.723916 | + | 2.11564i | −0.587785 | − | 0.809017i | −0.778803 | + | 1.52849i | 0.453990 | + | 0.891007i | 0.587785 | − | 0.809017i | 1.97635 | − | 1.04596i |
73.3 | −0.156434 | − | 0.987688i | 0.891007 | − | 0.453990i | −0.951057 | + | 0.309017i | 1.66882 | − | 1.48830i | −0.587785 | − | 0.809017i | 0.949592 | − | 1.86368i | 0.453990 | + | 0.891007i | 0.587785 | − | 0.809017i | −1.73104 | − | 1.41545i |
73.4 | 0.156434 | + | 0.987688i | −0.891007 | + | 0.453990i | −0.951057 | + | 0.309017i | −2.21854 | − | 0.279466i | −0.587785 | − | 0.809017i | 1.87801 | − | 3.68580i | −0.453990 | − | 0.891007i | 0.587785 | − | 0.809017i | −0.0710300 | − | 2.23494i |
73.5 | 0.156434 | + | 0.987688i | −0.891007 | + | 0.453990i | −0.951057 | + | 0.309017i | 0.215253 | + | 2.22568i | −0.587785 | − | 0.809017i | 0.0152534 | − | 0.0299364i | −0.453990 | − | 0.891007i | 0.587785 | − | 0.809017i | −2.16461 | + | 0.560777i |
73.6 | 0.156434 | + | 0.987688i | −0.891007 | + | 0.453990i | −0.951057 | + | 0.309017i | 0.941800 | − | 2.02806i | −0.587785 | − | 0.809017i | 0.505353 | − | 0.991810i | −0.453990 | − | 0.891007i | 0.587785 | − | 0.809017i | 2.15042 | + | 0.612947i |
127.1 | −0.891007 | − | 0.453990i | 0.987688 | − | 0.156434i | 0.587785 | + | 0.809017i | −1.74269 | − | 1.40108i | −0.951057 | − | 0.309017i | −0.171084 | + | 1.08018i | −0.156434 | − | 0.987688i | 0.951057 | − | 0.309017i | 0.916674 | + | 2.03954i |
127.2 | −0.891007 | − | 0.453990i | 0.987688 | − | 0.156434i | 0.587785 | + | 0.809017i | 1.39507 | − | 1.74751i | −0.951057 | − | 0.309017i | 0.526761 | − | 3.32584i | −0.156434 | − | 0.987688i | 0.951057 | − | 0.309017i | −2.03637 | + | 0.923695i |
See all 48 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
55.l | even | 20 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 330.2.u.a | ✓ | 48 |
3.b | odd | 2 | 1 | 990.2.bh.a | 48 | ||
5.c | odd | 4 | 1 | 330.2.u.b | yes | 48 | |
11.d | odd | 10 | 1 | 330.2.u.b | yes | 48 | |
15.e | even | 4 | 1 | 990.2.bh.b | 48 | ||
33.f | even | 10 | 1 | 990.2.bh.b | 48 | ||
55.l | even | 20 | 1 | inner | 330.2.u.a | ✓ | 48 |
165.u | odd | 20 | 1 | 990.2.bh.a | 48 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
330.2.u.a | ✓ | 48 | 1.a | even | 1 | 1 | trivial |
330.2.u.a | ✓ | 48 | 55.l | even | 20 | 1 | inner |
330.2.u.b | yes | 48 | 5.c | odd | 4 | 1 | |
330.2.u.b | yes | 48 | 11.d | odd | 10 | 1 | |
990.2.bh.a | 48 | 3.b | odd | 2 | 1 | ||
990.2.bh.a | 48 | 165.u | odd | 20 | 1 | ||
990.2.bh.b | 48 | 15.e | even | 4 | 1 | ||
990.2.bh.b | 48 | 33.f | even | 10 | 1 |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{48} - 16 T_{7}^{47} + 168 T_{7}^{46} - 1248 T_{7}^{45} + 6953 T_{7}^{44} - 26804 T_{7}^{43} + \cdots + 2823434496 \) acting on \(S_{2}^{\mathrm{new}}(330, [\chi])\).