Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [648,7,Mod(161,648)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(648, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 1]))
N = Newforms(chi, 7, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("648.161");
S:= CuspForms(chi, 7);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 648 = 2^{3} \cdot 3^{4} \) |
Weight: | \( k \) | \(=\) | \( 7 \) |
Character orbit: | \([\chi]\) | \(=\) | 648.e (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: | \(149.075046186\) |
Analytic rank: | \(0\) |
Dimension: | \(36\) |
Twist minimal: | no (minimal twist has level 72) |
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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
161.1 | 0 | 0 | 0 | − | 244.807i | 0 | 397.030 | 0 | 0 | 0 | |||||||||||||||||
161.2 | 0 | 0 | 0 | − | 208.701i | 0 | −347.432 | 0 | 0 | 0 | |||||||||||||||||
161.3 | 0 | 0 | 0 | − | 201.898i | 0 | 387.828 | 0 | 0 | 0 | |||||||||||||||||
161.4 | 0 | 0 | 0 | − | 183.121i | 0 | −198.208 | 0 | 0 | 0 | |||||||||||||||||
161.5 | 0 | 0 | 0 | − | 182.017i | 0 | −399.532 | 0 | 0 | 0 | |||||||||||||||||
161.6 | 0 | 0 | 0 | − | 176.491i | 0 | −305.068 | 0 | 0 | 0 | |||||||||||||||||
161.7 | 0 | 0 | 0 | − | 143.962i | 0 | −106.579 | 0 | 0 | 0 | |||||||||||||||||
161.8 | 0 | 0 | 0 | − | 130.791i | 0 | 287.184 | 0 | 0 | 0 | |||||||||||||||||
161.9 | 0 | 0 | 0 | − | 107.663i | 0 | 64.9668 | 0 | 0 | 0 | |||||||||||||||||
161.10 | 0 | 0 | 0 | − | 105.872i | 0 | −476.866 | 0 | 0 | 0 | |||||||||||||||||
161.11 | 0 | 0 | 0 | − | 100.993i | 0 | 42.3502 | 0 | 0 | 0 | |||||||||||||||||
161.12 | 0 | 0 | 0 | − | 99.7374i | 0 | 415.322 | 0 | 0 | 0 | |||||||||||||||||
161.13 | 0 | 0 | 0 | − | 87.7969i | 0 | 575.780 | 0 | 0 | 0 | |||||||||||||||||
161.14 | 0 | 0 | 0 | − | 56.6696i | 0 | 452.974 | 0 | 0 | 0 | |||||||||||||||||
161.15 | 0 | 0 | 0 | − | 50.0519i | 0 | −94.5066 | 0 | 0 | 0 | |||||||||||||||||
161.16 | 0 | 0 | 0 | − | 30.2276i | 0 | −602.813 | 0 | 0 | 0 | |||||||||||||||||
161.17 | 0 | 0 | 0 | − | 13.7535i | 0 | −348.446 | 0 | 0 | 0 | |||||||||||||||||
161.18 | 0 | 0 | 0 | − | 11.4688i | 0 | 256.017 | 0 | 0 | 0 | |||||||||||||||||
161.19 | 0 | 0 | 0 | 11.4688i | 0 | 256.017 | 0 | 0 | 0 | ||||||||||||||||||
161.20 | 0 | 0 | 0 | 13.7535i | 0 | −348.446 | 0 | 0 | 0 | ||||||||||||||||||
See all 36 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 648.7.e.c | 36 | |
3.b | odd | 2 | 1 | inner | 648.7.e.c | 36 | |
9.c | even | 3 | 1 | 72.7.m.a | ✓ | 36 | |
9.c | even | 3 | 1 | 216.7.m.a | 36 | ||
9.d | odd | 6 | 1 | 72.7.m.a | ✓ | 36 | |
9.d | odd | 6 | 1 | 216.7.m.a | 36 | ||
36.f | odd | 6 | 1 | 144.7.q.d | 36 | ||
36.f | odd | 6 | 1 | 432.7.q.d | 36 | ||
36.h | even | 6 | 1 | 144.7.q.d | 36 | ||
36.h | even | 6 | 1 | 432.7.q.d | 36 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
72.7.m.a | ✓ | 36 | 9.c | even | 3 | 1 | |
72.7.m.a | ✓ | 36 | 9.d | odd | 6 | 1 | |
144.7.q.d | 36 | 36.f | odd | 6 | 1 | ||
144.7.q.d | 36 | 36.h | even | 6 | 1 | ||
216.7.m.a | 36 | 9.c | even | 3 | 1 | ||
216.7.m.a | 36 | 9.d | odd | 6 | 1 | ||
432.7.q.d | 36 | 36.f | odd | 6 | 1 | ||
432.7.q.d | 36 | 36.h | even | 6 | 1 | ||
648.7.e.c | 36 | 1.a | even | 1 | 1 | trivial | |
648.7.e.c | 36 | 3.b | odd | 2 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{36} + 337500 T_{5}^{34} + 51150720402 T_{5}^{32} + \cdots + 24\!\cdots\!00 \) acting on \(S_{7}^{\mathrm{new}}(648, [\chi])\).