Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [882,2,Mod(37,882)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(882, base_ring=CyclotomicField(42))
chi = DirichletCharacter(H, H._module([0, 32]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("882.37");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 882 = 2 \cdot 3^{2} \cdot 7^{2} \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 882.z (of order \(21\), degree \(12\), 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: | \(7.04280545828\) |
Analytic rank: | \(0\) |
Dimension: | \(36\) |
Relative dimension: | \(3\) over \(\Q(\zeta_{21})\) |
Twist minimal: | no (minimal twist has level 294) |
Sato-Tate group: | $\mathrm{SU}(2)[C_{21}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
37.1 | −0.826239 | + | 0.563320i | 0 | 0.365341 | − | 0.930874i | −3.02490 | − | 0.933059i | 0 | −2.44171 | − | 1.01884i | 0.222521 | + | 0.974928i | 0 | 3.02490 | − | 0.933059i | ||||||
37.2 | −0.826239 | + | 0.563320i | 0 | 0.365341 | − | 0.930874i | 0.409482 | + | 0.126309i | 0 | 2.34610 | + | 1.22304i | 0.222521 | + | 0.974928i | 0 | −0.409482 | + | 0.126309i | ||||||
37.3 | −0.826239 | + | 0.563320i | 0 | 0.365341 | − | 0.930874i | 4.26921 | + | 1.31688i | 0 | −1.15057 | − | 2.38248i | 0.222521 | + | 0.974928i | 0 | −4.26921 | + | 1.31688i | ||||||
109.1 | 0.733052 | − | 0.680173i | 0 | 0.0747301 | − | 0.997204i | −1.26635 | + | 3.22660i | 0 | −1.11625 | + | 2.39875i | −0.623490 | − | 0.781831i | 0 | 1.26635 | + | 3.22660i | ||||||
109.2 | 0.733052 | − | 0.680173i | 0 | 0.0747301 | − | 0.997204i | 0.513031 | − | 1.30718i | 0 | −0.0547842 | − | 2.64518i | −0.623490 | − | 0.781831i | 0 | −0.513031 | − | 1.30718i | ||||||
109.3 | 0.733052 | − | 0.680173i | 0 | 0.0747301 | − | 0.997204i | 1.17326 | − | 2.98942i | 0 | 1.68654 | + | 2.03853i | −0.623490 | − | 0.781831i | 0 | −1.17326 | − | 2.98942i | ||||||
163.1 | −0.365341 | − | 0.930874i | 0 | −0.733052 | + | 0.680173i | −2.54357 | + | 1.73418i | 0 | −0.146091 | − | 2.64171i | 0.900969 | + | 0.433884i | 0 | 2.54357 | + | 1.73418i | ||||||
163.2 | −0.365341 | − | 0.930874i | 0 | −0.733052 | + | 0.680173i | −0.374506 | + | 0.255334i | 0 | 1.59832 | + | 2.10840i | 0.900969 | + | 0.433884i | 0 | 0.374506 | + | 0.255334i | ||||||
163.3 | −0.365341 | − | 0.930874i | 0 | −0.733052 | + | 0.680173i | 2.53296 | − | 1.72694i | 0 | −2.53425 | + | 0.759993i | 0.900969 | + | 0.433884i | 0 | −2.53296 | − | 1.72694i | ||||||
235.1 | 0.988831 | + | 0.149042i | 0 | 0.955573 | + | 0.294755i | −0.0491854 | − | 0.656334i | 0 | 2.17925 | + | 1.50029i | 0.900969 | + | 0.433884i | 0 | 0.0491854 | − | 0.656334i | ||||||
235.2 | 0.988831 | + | 0.149042i | 0 | 0.955573 | + | 0.294755i | −0.0260923 | − | 0.348178i | 0 | −0.245125 | − | 2.63437i | 0.900969 | + | 0.433884i | 0 | 0.0260923 | − | 0.348178i | ||||||
235.3 | 0.988831 | + | 0.149042i | 0 | 0.955573 | + | 0.294755i | 0.292828 | + | 3.90752i | 0 | −2.59908 | + | 0.494735i | 0.900969 | + | 0.433884i | 0 | −0.292828 | + | 3.90752i | ||||||
289.1 | 0.988831 | − | 0.149042i | 0 | 0.955573 | − | 0.294755i | −0.0491854 | + | 0.656334i | 0 | 2.17925 | − | 1.50029i | 0.900969 | − | 0.433884i | 0 | 0.0491854 | + | 0.656334i | ||||||
289.2 | 0.988831 | − | 0.149042i | 0 | 0.955573 | − | 0.294755i | −0.0260923 | + | 0.348178i | 0 | −0.245125 | + | 2.63437i | 0.900969 | − | 0.433884i | 0 | 0.0260923 | + | 0.348178i | ||||||
289.3 | 0.988831 | − | 0.149042i | 0 | 0.955573 | − | 0.294755i | 0.292828 | − | 3.90752i | 0 | −2.59908 | − | 0.494735i | 0.900969 | − | 0.433884i | 0 | −0.292828 | − | 3.90752i | ||||||
415.1 | −0.0747301 | + | 0.997204i | 0 | −0.988831 | − | 0.149042i | −0.794619 | − | 0.737299i | 0 | 2.24297 | − | 1.40324i | 0.222521 | − | 0.974928i | 0 | 0.794619 | − | 0.737299i | ||||||
415.2 | −0.0747301 | + | 0.997204i | 0 | −0.988831 | − | 0.149042i | −0.738585 | − | 0.685307i | 0 | −1.26941 | + | 2.32133i | 0.222521 | − | 0.974928i | 0 | 0.738585 | − | 0.685307i | ||||||
415.3 | −0.0747301 | + | 0.997204i | 0 | −0.988831 | − | 0.149042i | 2.24988 | + | 2.08758i | 0 | 1.57456 | + | 2.12621i | 0.222521 | − | 0.974928i | 0 | −2.24988 | + | 2.08758i | ||||||
487.1 | −0.365341 | + | 0.930874i | 0 | −0.733052 | − | 0.680173i | −2.54357 | − | 1.73418i | 0 | −0.146091 | + | 2.64171i | 0.900969 | − | 0.433884i | 0 | 2.54357 | − | 1.73418i | ||||||
487.2 | −0.365341 | + | 0.930874i | 0 | −0.733052 | − | 0.680173i | −0.374506 | − | 0.255334i | 0 | 1.59832 | − | 2.10840i | 0.900969 | − | 0.433884i | 0 | 0.374506 | − | 0.255334i | ||||||
See all 36 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
49.g | even | 21 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 882.2.z.e | 36 | |
3.b | odd | 2 | 1 | 294.2.m.d | ✓ | 36 | |
49.g | even | 21 | 1 | inner | 882.2.z.e | 36 | |
147.n | odd | 42 | 1 | 294.2.m.d | ✓ | 36 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
294.2.m.d | ✓ | 36 | 3.b | odd | 2 | 1 | |
294.2.m.d | ✓ | 36 | 147.n | odd | 42 | 1 | |
882.2.z.e | 36 | 1.a | even | 1 | 1 | trivial | |
882.2.z.e | 36 | 49.g | even | 21 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{36} - 24 T_{5}^{34} + 18 T_{5}^{33} + 56 T_{5}^{32} - 235 T_{5}^{31} + 4260 T_{5}^{30} + \cdots + 439279681 \) acting on \(S_{2}^{\mathrm{new}}(882, [\chi])\).