Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [243,4,Mod(28,243)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(243, base_ring=CyclotomicField(18))
chi = DirichletCharacter(H, H._module([8]))
N = Newforms(chi, 4, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("243.28");
S:= CuspForms(chi, 4);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 243 = 3^{5} \) |
Weight: | \( k \) | \(=\) | \( 4 \) |
Character orbit: | \([\chi]\) | \(=\) | 243.e (of order \(9\), degree \(6\), 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: | \(14.3374641314\) |
Analytic rank: | \(0\) |
Dimension: | \(48\) |
Relative dimension: | \(8\) over \(\Q(\zeta_{9})\) |
Twist minimal: | no (minimal twist has level 27) |
Sato-Tate group: | $\mathrm{SU}(2)[C_{9}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
28.1 | −0.812863 | − | 4.60998i | 0 | −13.0736 | + | 4.75840i | −2.40097 | − | 2.01465i | 0 | 28.6635 | + | 10.4327i | 13.8388 | + | 23.9695i | 0 | −7.33583 | + | 12.7060i | ||||||
28.2 | −0.723057 | − | 4.10066i | 0 | −8.77506 | + | 3.19386i | 11.4150 | + | 9.57830i | 0 | −4.10372 | − | 1.49363i | 2.78612 | + | 4.82571i | 0 | 31.0237 | − | 53.7346i | ||||||
28.3 | −0.316340 | − | 1.79405i | 0 | 4.39899 | − | 1.60110i | −10.3630 | − | 8.69559i | 0 | −21.4798 | − | 7.81801i | −11.5509 | − | 20.0068i | 0 | −12.3221 | + | 21.3425i | ||||||
28.4 | −0.200319 | − | 1.13606i | 0 | 6.26703 | − | 2.28101i | 5.88313 | + | 4.93653i | 0 | −12.1897 | − | 4.43667i | −8.46114 | − | 14.6551i | 0 | 4.42972 | − | 7.67249i | ||||||
28.5 | 0.146052 | + | 0.828300i | 0 | 6.85279 | − | 2.49421i | −8.28596 | − | 6.95275i | 0 | 25.0820 | + | 9.12911i | 6.43113 | + | 11.1390i | 0 | 4.54878 | − | 7.87873i | ||||||
28.6 | 0.512603 | + | 2.90711i | 0 | −0.671007 | + | 0.244226i | 13.0560 | + | 10.9553i | 0 | 12.0565 | + | 4.38819i | 10.7539 | + | 18.6263i | 0 | −25.1558 | + | 43.5711i | ||||||
28.7 | 0.553542 | + | 3.13930i | 0 | −2.03123 | + | 0.739306i | −5.49264 | − | 4.60887i | 0 | −4.56436 | − | 1.66129i | 9.30563 | + | 16.1178i | 0 | 11.4282 | − | 19.7942i | ||||||
28.8 | 0.921634 | + | 5.22685i | 0 | −18.9530 | + | 6.89831i | 4.22440 | + | 3.54469i | 0 | −23.1381 | − | 8.42157i | −32.2942 | − | 55.9352i | 0 | −14.6342 | + | 25.3472i | ||||||
55.1 | −4.89591 | + | 1.78197i | 0 | 14.6662 | − | 12.3064i | 2.43912 | + | 13.8329i | 0 | −7.89031 | − | 6.62076i | −29.0343 | + | 50.2889i | 0 | −36.5916 | − | 63.3784i | ||||||
55.2 | −3.46620 | + | 1.26159i | 0 | 4.29454 | − | 3.60355i | −0.280549 | − | 1.59107i | 0 | 26.0189 | + | 21.8324i | 4.41508 | − | 7.64714i | 0 | 2.97972 | + | 5.16102i | ||||||
55.3 | −2.99674 | + | 1.09072i | 0 | 1.66242 | − | 1.39493i | −2.48939 | − | 14.1180i | 0 | −24.6679 | − | 20.6988i | 9.29592 | − | 16.1010i | 0 | 22.8590 | + | 39.5929i | ||||||
55.4 | −0.605602 | + | 0.220421i | 0 | −5.81019 | + | 4.87533i | −0.0893021 | − | 0.506458i | 0 | −7.35639 | − | 6.17274i | 5.02191 | − | 8.69820i | 0 | 0.165716 | + | 0.287028i | ||||||
55.5 | 0.280832 | − | 0.102214i | 0 | −6.05994 | + | 5.08489i | 3.48193 | + | 19.7470i | 0 | 16.4627 | + | 13.8138i | −2.37749 | + | 4.11794i | 0 | 2.99626 | + | 5.18968i | ||||||
55.6 | 2.19021 | − | 0.797172i | 0 | −1.96681 | + | 1.65035i | −1.08379 | − | 6.14650i | 0 | −2.07054 | − | 1.73739i | −12.3152 | + | 21.3306i | 0 | −7.27356 | − | 12.5982i | ||||||
55.7 | 3.20688 | − | 1.16721i | 0 | 2.79337 | − | 2.34391i | −1.90706 | − | 10.8155i | 0 | −3.37516 | − | 2.83209i | −7.42861 | + | 12.8667i | 0 | −18.7397 | − | 32.4581i | ||||||
55.8 | 4.73349 | − | 1.72285i | 0 | 13.3094 | − | 11.1679i | 2.70490 | + | 15.3402i | 0 | 4.31842 | + | 3.62358i | 23.6100 | − | 40.8938i | 0 | 39.2325 | + | 67.9527i | ||||||
109.1 | −3.31592 | + | 2.78239i | 0 | 1.86447 | − | 10.5739i | 4.03535 | − | 1.46875i | 0 | −3.54847 | − | 20.1244i | 5.92381 | + | 10.2603i | 0 | −9.29428 | + | 16.0982i | ||||||
109.2 | −2.87878 | + | 2.41559i | 0 | 1.06315 | − | 6.02945i | −5.73755 | + | 2.08830i | 0 | 2.99660 | + | 16.9946i | −3.52788 | − | 6.11047i | 0 | 11.4727 | − | 19.8713i | ||||||
109.3 | −1.48645 | + | 1.24728i | 0 | −0.735357 | + | 4.17042i | 2.54549 | − | 0.926483i | 0 | −2.06947 | − | 11.7366i | −11.8703 | − | 20.5600i | 0 | −2.62817 | + | 4.55212i | ||||||
109.4 | 0.759876 | − | 0.637611i | 0 | −1.21832 | + | 6.90945i | −0.135765 | + | 0.0494143i | 0 | 4.40626 | + | 24.9892i | 7.44756 | + | 12.8996i | 0 | −0.0716572 | + | 0.124114i | ||||||
See all 48 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
27.e | even | 9 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 243.4.e.d | 48 | |
3.b | odd | 2 | 1 | 243.4.e.a | 48 | ||
9.c | even | 3 | 1 | 27.4.e.a | ✓ | 48 | |
9.c | even | 3 | 1 | 243.4.e.c | 48 | ||
9.d | odd | 6 | 1 | 81.4.e.a | 48 | ||
9.d | odd | 6 | 1 | 243.4.e.b | 48 | ||
27.e | even | 9 | 1 | 27.4.e.a | ✓ | 48 | |
27.e | even | 9 | 1 | 243.4.e.c | 48 | ||
27.e | even | 9 | 1 | inner | 243.4.e.d | 48 | |
27.e | even | 9 | 1 | 729.4.a.d | 24 | ||
27.f | odd | 18 | 1 | 81.4.e.a | 48 | ||
27.f | odd | 18 | 1 | 243.4.e.a | 48 | ||
27.f | odd | 18 | 1 | 243.4.e.b | 48 | ||
27.f | odd | 18 | 1 | 729.4.a.c | 24 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
27.4.e.a | ✓ | 48 | 9.c | even | 3 | 1 | |
27.4.e.a | ✓ | 48 | 27.e | even | 9 | 1 | |
81.4.e.a | 48 | 9.d | odd | 6 | 1 | ||
81.4.e.a | 48 | 27.f | odd | 18 | 1 | ||
243.4.e.a | 48 | 3.b | odd | 2 | 1 | ||
243.4.e.a | 48 | 27.f | odd | 18 | 1 | ||
243.4.e.b | 48 | 9.d | odd | 6 | 1 | ||
243.4.e.b | 48 | 27.f | odd | 18 | 1 | ||
243.4.e.c | 48 | 9.c | even | 3 | 1 | ||
243.4.e.c | 48 | 27.e | even | 9 | 1 | ||
243.4.e.d | 48 | 1.a | even | 1 | 1 | trivial | |
243.4.e.d | 48 | 27.e | even | 9 | 1 | inner | |
729.4.a.c | 24 | 27.f | odd | 18 | 1 | ||
729.4.a.d | 24 | 27.e | even | 9 | 1 |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{48} - 3 T_{2}^{47} + 3 T_{2}^{46} + 57 T_{2}^{45} - 198 T_{2}^{44} + 1080 T_{2}^{43} + \cdots + 18\!\cdots\!16 \) acting on \(S_{4}^{\mathrm{new}}(243, [\chi])\).