Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [798,2,Mod(13,798)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(798, base_ring=CyclotomicField(18))
chi = DirichletCharacter(H, H._module([0, 9, 5]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("798.13");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 798 = 2 \cdot 3 \cdot 7 \cdot 19 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 798.bx (of order \(18\), degree \(6\), 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: | \(6.37206208130\) |
Analytic rank: | \(0\) |
Dimension: | \(84\) |
Relative dimension: | \(14\) over \(\Q(\zeta_{18})\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{18}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
13.1 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −3.30663 | + | 0.583048i | 0.342020 | + | 0.939693i | −0.922948 | − | 2.47955i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | 2.57210 | + | 2.15825i |
13.2 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −1.97053 | + | 0.347457i | 0.342020 | + | 0.939693i | −2.62814 | + | 0.304744i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | 1.53280 | + | 1.28617i |
13.3 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −1.08654 | + | 0.191586i | 0.342020 | + | 0.939693i | 2.31574 | + | 1.27959i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | 0.845177 | + | 0.709187i |
13.4 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −0.181551 | + | 0.0320123i | 0.342020 | + | 0.939693i | −0.838228 | + | 2.50946i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | 0.141222 | + | 0.118499i |
13.5 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 2.14904 | − | 0.378934i | 0.342020 | + | 0.939693i | 0.736406 | − | 2.54120i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | −1.67166 | − | 1.40269i |
13.6 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 2.42151 | − | 0.426977i | 0.342020 | + | 0.939693i | 2.64368 | + | 0.104630i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | −1.88360 | − | 1.58053i |
13.7 | −0.642788 | − | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 3.82553 | − | 0.674544i | 0.342020 | + | 0.939693i | −1.71181 | + | 2.01735i | 0.866025 | − | 0.500000i | 0.766044 | + | 0.642788i | −2.97573 | − | 2.49694i |
13.8 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −3.61793 | + | 0.637938i | −0.342020 | − | 0.939693i | 2.61743 | − | 0.386052i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | −2.81425 | − | 2.36143i |
13.9 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −3.50454 | + | 0.617946i | −0.342020 | − | 0.939693i | −2.63245 | + | 0.264946i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | −2.72605 | − | 2.28743i |
13.10 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −1.40491 | + | 0.247723i | −0.342020 | − | 0.939693i | −0.0972585 | − | 2.64396i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | −1.09282 | − | 0.916987i |
13.11 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | −0.129519 | + | 0.0228377i | −0.342020 | − | 0.939693i | −0.417096 | + | 2.61267i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | −0.100748 | − | 0.0845375i |
13.12 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 0.851173 | − | 0.150085i | −0.342020 | − | 0.939693i | −1.81371 | − | 1.92625i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | 0.662095 | + | 0.555563i |
13.13 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 2.41276 | − | 0.425435i | −0.342020 | − | 0.939693i | 2.16005 | + | 1.52780i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | 1.87680 | + | 1.57482i |
13.14 | 0.642788 | + | 0.766044i | −0.939693 | − | 0.342020i | −0.173648 | + | 0.984808i | 3.54213 | − | 0.624572i | −0.342020 | − | 0.939693i | −2.63836 | − | 0.197689i | −0.866025 | + | 0.500000i | 0.766044 | + | 0.642788i | 2.75528 | + | 2.31196i |
97.1 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | −1.32194 | − | 3.63201i | −0.642788 | − | 0.766044i | −1.91753 | − | 1.82293i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | 0.671168 | + | 3.80638i |
97.2 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | −1.27407 | − | 3.50048i | −0.642788 | − | 0.766044i | 2.30967 | − | 1.29051i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | 0.646862 | + | 3.66854i |
97.3 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | −0.355755 | − | 0.977429i | −0.642788 | − | 0.766044i | −2.58360 | − | 0.570091i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | 0.180621 | + | 1.02436i |
97.4 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | 0.226334 | + | 0.621848i | −0.642788 | − | 0.766044i | −1.98402 | + | 1.75033i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | −0.114913 | − | 0.651703i |
97.5 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | 0.329403 | + | 0.905028i | −0.642788 | − | 0.766044i | 2.27462 | − | 1.35134i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | −0.167242 | − | 0.948479i |
97.6 | −0.984808 | − | 0.173648i | 0.766044 | + | 0.642788i | 0.939693 | + | 0.342020i | 0.720513 | + | 1.97959i | −0.642788 | − | 0.766044i | 0.0696210 | − | 2.64484i | −0.866025 | − | 0.500000i | 0.173648 | + | 0.984808i | −0.365814 | − | 2.07463i |
See all 84 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
133.ba | even | 18 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 798.2.bx.a | ✓ | 84 |
7.b | odd | 2 | 1 | 798.2.bx.b | yes | 84 | |
19.f | odd | 18 | 1 | 798.2.bx.b | yes | 84 | |
133.ba | even | 18 | 1 | inner | 798.2.bx.a | ✓ | 84 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
798.2.bx.a | ✓ | 84 | 1.a | even | 1 | 1 | trivial |
798.2.bx.a | ✓ | 84 | 133.ba | even | 18 | 1 | inner |
798.2.bx.b | yes | 84 | 7.b | odd | 2 | 1 | |
798.2.bx.b | yes | 84 | 19.f | odd | 18 | 1 |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{84} - 3 T_{5}^{82} + 150 T_{5}^{80} + 564 T_{5}^{79} - 7842 T_{5}^{78} - 12168 T_{5}^{77} + \cdots + 21\!\cdots\!21 \) acting on \(S_{2}^{\mathrm{new}}(798, [\chi])\).