Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [1848,2,Mod(881,1848)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(1848, base_ring=CyclotomicField(2))
chi = DirichletCharacter(H, H._module([0, 0, 1, 1, 0]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("1848.881");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 1848 = 2^{3} \cdot 3 \cdot 7 \cdot 11 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 1848.v (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: | \(14.7563542935\) |
Analytic rank: | \(0\) |
Dimension: | \(32\) |
Twist minimal: | yes |
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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
881.1 | 0 | −1.72051 | − | 0.199608i | 0 | 3.94119 | 0 | −0.792788 | + | 2.52418i | 0 | 2.92031 | + | 0.686854i | 0 | ||||||||||||
881.2 | 0 | −1.72051 | + | 0.199608i | 0 | 3.94119 | 0 | −0.792788 | − | 2.52418i | 0 | 2.92031 | − | 0.686854i | 0 | ||||||||||||
881.3 | 0 | −1.64966 | − | 0.527849i | 0 | −2.50380 | 0 | 2.27837 | + | 1.34501i | 0 | 2.44275 | + | 1.74154i | 0 | ||||||||||||
881.4 | 0 | −1.64966 | + | 0.527849i | 0 | −2.50380 | 0 | 2.27837 | − | 1.34501i | 0 | 2.44275 | − | 1.74154i | 0 | ||||||||||||
881.5 | 0 | −1.45288 | − | 0.942942i | 0 | −2.14239 | 0 | 0.721340 | + | 2.54552i | 0 | 1.22172 | + | 2.73996i | 0 | ||||||||||||
881.6 | 0 | −1.45288 | + | 0.942942i | 0 | −2.14239 | 0 | 0.721340 | − | 2.54552i | 0 | 1.22172 | − | 2.73996i | 0 | ||||||||||||
881.7 | 0 | −1.44336 | − | 0.957453i | 0 | 0.755862 | 0 | 2.49060 | + | 0.892695i | 0 | 1.16657 | + | 2.76390i | 0 | ||||||||||||
881.8 | 0 | −1.44336 | + | 0.957453i | 0 | 0.755862 | 0 | 2.49060 | − | 0.892695i | 0 | 1.16657 | − | 2.76390i | 0 | ||||||||||||
881.9 | 0 | −1.12980 | − | 1.31284i | 0 | −1.68437 | 0 | −2.40047 | + | 1.11255i | 0 | −0.447111 | + | 2.96649i | 0 | ||||||||||||
881.10 | 0 | −1.12980 | + | 1.31284i | 0 | −1.68437 | 0 | −2.40047 | − | 1.11255i | 0 | −0.447111 | − | 2.96649i | 0 | ||||||||||||
881.11 | 0 | −0.977486 | − | 1.42987i | 0 | 2.44607 | 0 | −0.368459 | − | 2.61997i | 0 | −1.08904 | + | 2.79535i | 0 | ||||||||||||
881.12 | 0 | −0.977486 | + | 1.42987i | 0 | 2.44607 | 0 | −0.368459 | + | 2.61997i | 0 | −1.08904 | − | 2.79535i | 0 | ||||||||||||
881.13 | 0 | −0.583380 | − | 1.63085i | 0 | 4.22177 | 0 | −1.21528 | + | 2.35012i | 0 | −2.31934 | + | 1.90281i | 0 | ||||||||||||
881.14 | 0 | −0.583380 | + | 1.63085i | 0 | 4.22177 | 0 | −1.21528 | − | 2.35012i | 0 | −2.31934 | − | 1.90281i | 0 | ||||||||||||
881.15 | 0 | −0.228186 | − | 1.71695i | 0 | 1.84204 | 0 | 0.286690 | − | 2.63017i | 0 | −2.89586 | + | 0.783571i | 0 | ||||||||||||
881.16 | 0 | −0.228186 | + | 1.71695i | 0 | 1.84204 | 0 | 0.286690 | + | 2.63017i | 0 | −2.89586 | − | 0.783571i | 0 | ||||||||||||
881.17 | 0 | 0.228186 | − | 1.71695i | 0 | −1.84204 | 0 | 0.286690 | − | 2.63017i | 0 | −2.89586 | − | 0.783571i | 0 | ||||||||||||
881.18 | 0 | 0.228186 | + | 1.71695i | 0 | −1.84204 | 0 | 0.286690 | + | 2.63017i | 0 | −2.89586 | + | 0.783571i | 0 | ||||||||||||
881.19 | 0 | 0.583380 | − | 1.63085i | 0 | −4.22177 | 0 | −1.21528 | + | 2.35012i | 0 | −2.31934 | − | 1.90281i | 0 | ||||||||||||
881.20 | 0 | 0.583380 | + | 1.63085i | 0 | −4.22177 | 0 | −1.21528 | − | 2.35012i | 0 | −2.31934 | + | 1.90281i | 0 | ||||||||||||
See all 32 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
7.b | odd | 2 | 1 | inner |
21.c | even | 2 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 1848.2.v.e | ✓ | 32 |
3.b | odd | 2 | 1 | inner | 1848.2.v.e | ✓ | 32 |
7.b | odd | 2 | 1 | inner | 1848.2.v.e | ✓ | 32 |
21.c | even | 2 | 1 | inner | 1848.2.v.e | ✓ | 32 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
1848.2.v.e | ✓ | 32 | 1.a | even | 1 | 1 | trivial |
1848.2.v.e | ✓ | 32 | 3.b | odd | 2 | 1 | inner |
1848.2.v.e | ✓ | 32 | 7.b | odd | 2 | 1 | inner |
1848.2.v.e | ✓ | 32 | 21.c | even | 2 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{16} - 57 T_{5}^{14} + 1287 T_{5}^{12} - 14971 T_{5}^{10} + 98420 T_{5}^{8} - 373360 T_{5}^{6} + \cdots + 262144 \) acting on \(S_{2}^{\mathrm{new}}(1848, [\chi])\).