Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [1344,2,Mod(239,1344)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1344, base_ring=CyclotomicField(4))
chi = DirichletCharacter(H, H._module([2, 3, 2, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("1344.239");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 1344 = 2^{6} \cdot 3 \cdot 7 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 1344.s (of order \(4\), degree \(2\), 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: | \(10.7318940317\) |
Analytic rank: | \(0\) |
Dimension: | \(40\) |
Relative dimension: | \(20\) over \(\Q(i)\) |
Twist minimal: | no (minimal twist has level 336) |
Sato-Tate group: | $\mathrm{SU}(2)[C_{4}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
239.1 | 0 | −1.73158 | − | 0.0404130i | 0 | 0.0573500 | + | 0.0573500i | 0 | 1.00000 | 0 | 2.99673 | + | 0.139957i | 0 | ||||||||||||
239.2 | 0 | −1.72790 | − | 0.119805i | 0 | 0.793669 | + | 0.793669i | 0 | 1.00000 | 0 | 2.97129 | + | 0.414021i | 0 | ||||||||||||
239.3 | 0 | −1.61364 | − | 0.629429i | 0 | −3.08691 | − | 3.08691i | 0 | 1.00000 | 0 | 2.20764 | + | 2.03134i | 0 | ||||||||||||
239.4 | 0 | −1.42461 | + | 0.985133i | 0 | −0.766553 | − | 0.766553i | 0 | 1.00000 | 0 | 1.05903 | − | 2.80686i | 0 | ||||||||||||
239.5 | 0 | −1.26429 | + | 1.18388i | 0 | −2.84277 | − | 2.84277i | 0 | 1.00000 | 0 | 0.196841 | − | 2.99354i | 0 | ||||||||||||
239.6 | 0 | −1.18388 | + | 1.26429i | 0 | 2.84277 | + | 2.84277i | 0 | 1.00000 | 0 | −0.196841 | − | 2.99354i | 0 | ||||||||||||
239.7 | 0 | −0.985133 | + | 1.42461i | 0 | 0.766553 | + | 0.766553i | 0 | 1.00000 | 0 | −1.05903 | − | 2.80686i | 0 | ||||||||||||
239.8 | 0 | −0.827739 | − | 1.52146i | 0 | −1.23935 | − | 1.23935i | 0 | 1.00000 | 0 | −1.62970 | + | 2.51875i | 0 | ||||||||||||
239.9 | 0 | −0.567369 | − | 1.63649i | 0 | −0.132854 | − | 0.132854i | 0 | 1.00000 | 0 | −2.35619 | + | 1.85698i | 0 | ||||||||||||
239.10 | 0 | −0.408017 | − | 1.68331i | 0 | 2.26080 | + | 2.26080i | 0 | 1.00000 | 0 | −2.66704 | + | 1.37363i | 0 | ||||||||||||
239.11 | 0 | 0.0404130 | + | 1.73158i | 0 | −0.0573500 | − | 0.0573500i | 0 | 1.00000 | 0 | −2.99673 | + | 0.139957i | 0 | ||||||||||||
239.12 | 0 | 0.0806676 | − | 1.73017i | 0 | −1.66193 | − | 1.66193i | 0 | 1.00000 | 0 | −2.98699 | − | 0.279137i | 0 | ||||||||||||
239.13 | 0 | 0.119805 | + | 1.72790i | 0 | −0.793669 | − | 0.793669i | 0 | 1.00000 | 0 | −2.97129 | + | 0.414021i | 0 | ||||||||||||
239.14 | 0 | 0.629429 | + | 1.61364i | 0 | 3.08691 | + | 3.08691i | 0 | 1.00000 | 0 | −2.20764 | + | 2.03134i | 0 | ||||||||||||
239.15 | 0 | 0.714681 | − | 1.57773i | 0 | 1.31983 | + | 1.31983i | 0 | 1.00000 | 0 | −1.97846 | − | 2.25515i | 0 | ||||||||||||
239.16 | 0 | 1.52146 | + | 0.827739i | 0 | 1.23935 | + | 1.23935i | 0 | 1.00000 | 0 | 1.62970 | + | 2.51875i | 0 | ||||||||||||
239.17 | 0 | 1.57773 | − | 0.714681i | 0 | −1.31983 | − | 1.31983i | 0 | 1.00000 | 0 | 1.97846 | − | 2.25515i | 0 | ||||||||||||
239.18 | 0 | 1.63649 | + | 0.567369i | 0 | 0.132854 | + | 0.132854i | 0 | 1.00000 | 0 | 2.35619 | + | 1.85698i | 0 | ||||||||||||
239.19 | 0 | 1.68331 | + | 0.408017i | 0 | −2.26080 | − | 2.26080i | 0 | 1.00000 | 0 | 2.66704 | + | 1.37363i | 0 | ||||||||||||
239.20 | 0 | 1.73017 | − | 0.0806676i | 0 | 1.66193 | + | 1.66193i | 0 | 1.00000 | 0 | 2.98699 | − | 0.279137i | 0 | ||||||||||||
See all 40 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
16.f | odd | 4 | 1 | inner |
48.k | even | 4 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 1344.2.s.c | 40 | |
3.b | odd | 2 | 1 | inner | 1344.2.s.c | 40 | |
4.b | odd | 2 | 1 | 336.2.s.c | ✓ | 40 | |
12.b | even | 2 | 1 | 336.2.s.c | ✓ | 40 | |
16.e | even | 4 | 1 | 336.2.s.c | ✓ | 40 | |
16.f | odd | 4 | 1 | inner | 1344.2.s.c | 40 | |
48.i | odd | 4 | 1 | 336.2.s.c | ✓ | 40 | |
48.k | even | 4 | 1 | inner | 1344.2.s.c | 40 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
336.2.s.c | ✓ | 40 | 4.b | odd | 2 | 1 | |
336.2.s.c | ✓ | 40 | 12.b | even | 2 | 1 | |
336.2.s.c | ✓ | 40 | 16.e | even | 4 | 1 | |
336.2.s.c | ✓ | 40 | 48.i | odd | 4 | 1 | |
1344.2.s.c | 40 | 1.a | even | 1 | 1 | trivial | |
1344.2.s.c | 40 | 3.b | odd | 2 | 1 | inner | |
1344.2.s.c | 40 | 16.f | odd | 4 | 1 | inner | |
1344.2.s.c | 40 | 48.k | even | 4 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{40} + 784 T_{5}^{36} + 201200 T_{5}^{32} + 19415584 T_{5}^{28} + 699116768 T_{5}^{24} + \cdots + 4096 \) acting on \(S_{2}^{\mathrm{new}}(1344, [\chi])\).