Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [786,2,Mod(785,786)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(786, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([1, 1]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("786.785");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 786 = 2 \cdot 3 \cdot 131 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 786.c (of order \(2\), degree \(1\), 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: | \(6.27624159887\) |
Analytic rank: | \(0\) |
Dimension: | \(22\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{2}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
785.1 | −1.00000 | −1.73135 | − | 0.0491919i | 1.00000 | − | 2.94334i | 1.73135 | + | 0.0491919i | −1.34901 | −1.00000 | 2.99516 | + | 0.170337i | 2.94334i | |||||||||||
785.2 | −1.00000 | −1.73135 | + | 0.0491919i | 1.00000 | 2.94334i | 1.73135 | − | 0.0491919i | −1.34901 | −1.00000 | 2.99516 | − | 0.170337i | − | 2.94334i | |||||||||||
785.3 | −1.00000 | −1.64178 | − | 0.551867i | 1.00000 | − | 1.95151i | 1.64178 | + | 0.551867i | 3.22239 | −1.00000 | 2.39089 | + | 1.81209i | 1.95151i | |||||||||||
785.4 | −1.00000 | −1.64178 | + | 0.551867i | 1.00000 | 1.95151i | 1.64178 | − | 0.551867i | 3.22239 | −1.00000 | 2.39089 | − | 1.81209i | − | 1.95151i | |||||||||||
785.5 | −1.00000 | −1.40604 | − | 1.01146i | 1.00000 | 0.821228i | 1.40604 | + | 1.01146i | −3.12036 | −1.00000 | 0.953902 | + | 2.84431i | − | 0.821228i | |||||||||||
785.6 | −1.00000 | −1.40604 | + | 1.01146i | 1.00000 | − | 0.821228i | 1.40604 | − | 1.01146i | −3.12036 | −1.00000 | 0.953902 | − | 2.84431i | 0.821228i | |||||||||||
785.7 | −1.00000 | −0.546763 | − | 1.64349i | 1.00000 | 2.07196i | 0.546763 | + | 1.64349i | −3.72685 | −1.00000 | −2.40210 | + | 1.79720i | − | 2.07196i | |||||||||||
785.8 | −1.00000 | −0.546763 | + | 1.64349i | 1.00000 | − | 2.07196i | 0.546763 | − | 1.64349i | −3.72685 | −1.00000 | −2.40210 | − | 1.79720i | 2.07196i | |||||||||||
785.9 | −1.00000 | −0.535808 | − | 1.64709i | 1.00000 | 0.0777980i | 0.535808 | + | 1.64709i | 3.16036 | −1.00000 | −2.42582 | + | 1.76505i | − | 0.0777980i | |||||||||||
785.10 | −1.00000 | −0.535808 | + | 1.64709i | 1.00000 | − | 0.0777980i | 0.535808 | − | 1.64709i | 3.16036 | −1.00000 | −2.42582 | − | 1.76505i | 0.0777980i | |||||||||||
785.11 | −1.00000 | 0.216821 | − | 1.71843i | 1.00000 | 3.92465i | −0.216821 | + | 1.71843i | 0.0863337 | −1.00000 | −2.90598 | − | 0.745183i | − | 3.92465i | |||||||||||
785.12 | −1.00000 | 0.216821 | + | 1.71843i | 1.00000 | − | 3.92465i | −0.216821 | − | 1.71843i | 0.0863337 | −1.00000 | −2.90598 | + | 0.745183i | 3.92465i | |||||||||||
785.13 | −1.00000 | 0.622365 | − | 1.61637i | 1.00000 | − | 3.59080i | −0.622365 | + | 1.61637i | 1.80489 | −1.00000 | −2.22532 | − | 2.01195i | 3.59080i | |||||||||||
785.14 | −1.00000 | 0.622365 | + | 1.61637i | 1.00000 | 3.59080i | −0.622365 | − | 1.61637i | 1.80489 | −1.00000 | −2.22532 | + | 2.01195i | − | 3.59080i | |||||||||||
785.15 | −1.00000 | 0.841374 | − | 1.51396i | 1.00000 | − | 1.03393i | −0.841374 | + | 1.51396i | 1.51546 | −1.00000 | −1.58418 | − | 2.54762i | 1.03393i | |||||||||||
785.16 | −1.00000 | 0.841374 | + | 1.51396i | 1.00000 | 1.03393i | −0.841374 | − | 1.51396i | 1.51546 | −1.00000 | −1.58418 | + | 2.54762i | − | 1.03393i | |||||||||||
785.17 | −1.00000 | 1.38518 | − | 1.03984i | 1.00000 | − | 2.51864i | −1.38518 | + | 1.03984i | −4.47400 | −1.00000 | 0.837445 | − | 2.88074i | 2.51864i | |||||||||||
785.18 | −1.00000 | 1.38518 | + | 1.03984i | 1.00000 | 2.51864i | −1.38518 | − | 1.03984i | −4.47400 | −1.00000 | 0.837445 | + | 2.88074i | − | 2.51864i | |||||||||||
785.19 | −1.00000 | 1.62370 | − | 0.603002i | 1.00000 | 3.09367i | −1.62370 | + | 0.603002i | 2.91971 | −1.00000 | 2.27278 | − | 1.95818i | − | 3.09367i | |||||||||||
785.20 | −1.00000 | 1.62370 | + | 0.603002i | 1.00000 | − | 3.09367i | −1.62370 | − | 0.603002i | 2.91971 | −1.00000 | 2.27278 | + | 1.95818i | 3.09367i | |||||||||||
See all 22 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
393.d | even | 2 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 786.2.c.a | ✓ | 22 |
3.b | odd | 2 | 1 | 786.2.c.b | yes | 22 | |
131.b | odd | 2 | 1 | 786.2.c.b | yes | 22 | |
393.d | even | 2 | 1 | inner | 786.2.c.a | ✓ | 22 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
786.2.c.a | ✓ | 22 | 1.a | even | 1 | 1 | trivial |
786.2.c.a | ✓ | 22 | 393.d | even | 2 | 1 | inner |
786.2.c.b | yes | 22 | 3.b | odd | 2 | 1 | |
786.2.c.b | yes | 22 | 131.b | odd | 2 | 1 |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{17}^{11} - 5 T_{17}^{10} - 97 T_{17}^{9} + 497 T_{17}^{8} + 2996 T_{17}^{7} - 16318 T_{17}^{6} + \cdots + 1084752 \) acting on \(S_{2}^{\mathrm{new}}(786, [\chi])\).