Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [867,2,Mod(65,867)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(867, base_ring=CyclotomicField(16))
chi = DirichletCharacter(H, H._module([8, 9]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("867.65");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 867 = 3 \cdot 17^{2} \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 867.i (of order \(16\), degree \(8\), 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: | \(6.92302985525\) |
Analytic rank: | \(0\) |
Dimension: | \(32\) |
Relative dimension: | \(4\) over \(\Q(\zeta_{16})\) |
Twist minimal: | no (minimal twist has level 51) |
Sato-Tate group: | $\mathrm{SU}(2)[C_{16}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
65.1 | −0.978223 | − | 2.36164i | −0.605951 | + | 1.62260i | −3.20621 | + | 3.20621i | −1.28940 | − | 1.92973i | 4.42475 | − | 0.156224i | −0.0883372 | − | 0.0590250i | 5.98501 | + | 2.47907i | −2.26565 | − | 1.96643i | −3.29600 | + | 4.93281i |
65.2 | −0.503008 | − | 1.21437i | −0.802099 | − | 1.53513i | 0.192538 | − | 0.192538i | 0.0781694 | + | 0.116989i | −1.46076 | + | 1.74623i | 1.47102 | + | 0.982905i | −2.75940 | − | 1.14298i | −1.71327 | + | 2.46266i | 0.102748 | − | 0.153773i |
65.3 | 0.503008 | + | 1.21437i | 1.32851 | − | 1.11133i | 0.192538 | − | 0.192538i | −0.0781694 | − | 0.116989i | 2.01782 | + | 1.05430i | 1.47102 | + | 0.982905i | 2.75940 | + | 1.14298i | 0.529896 | − | 2.95283i | 0.102748 | − | 0.153773i |
65.4 | 0.978223 | + | 2.36164i | −0.0611151 | + | 1.73097i | −3.20621 | + | 3.20621i | 1.28940 | + | 1.92973i | −4.14772 | + | 1.54895i | −0.0883372 | − | 0.0590250i | −5.98501 | − | 2.47907i | −2.99253 | − | 0.211577i | −3.29600 | + | 4.93281i |
131.1 | −1.34436 | + | 0.556851i | 1.69899 | − | 0.336782i | 0.0830021 | − | 0.0830021i | 0.595296 | − | 2.99276i | −2.09652 | + | 1.39884i | 2.11533 | − | 0.420765i | 1.04834 | − | 2.53091i | 2.77316 | − | 1.14438i | 0.866229 | + | 4.35483i |
131.2 | −0.774648 | + | 0.320870i | −1.60072 | − | 0.661591i | −0.917091 | + | 0.917091i | −0.159652 | + | 0.802626i | 1.45228 | − | 0.00112159i | −0.191449 | + | 0.0380817i | 1.05790 | − | 2.55399i | 2.12459 | + | 2.11804i | −0.133864 | − | 0.672980i |
131.3 | 0.774648 | − | 0.320870i | −0.00133765 | + | 1.73205i | −0.917091 | + | 0.917091i | 0.159652 | − | 0.802626i | 0.554726 | + | 1.34216i | −0.191449 | + | 0.0380817i | −1.05790 | + | 2.55399i | −3.00000 | − | 0.00463376i | −0.133864 | − | 0.672980i |
131.4 | 1.34436 | − | 0.556851i | 0.961322 | − | 1.44078i | 0.0830021 | − | 0.0830021i | −0.595296 | + | 2.99276i | 0.490059 | − | 2.47224i | 2.11533 | − | 0.420765i | −1.04834 | + | 2.53091i | −1.15172 | − | 2.77012i | 0.866229 | + | 4.35483i |
158.1 | −1.88095 | + | 0.779115i | −1.10321 | + | 1.33527i | 1.51674 | − | 1.51674i | −2.03727 | − | 0.405238i | 1.03475 | − | 3.37109i | −0.388855 | − | 1.95490i | −0.112963 | + | 0.272718i | −0.565877 | − | 2.94615i | 4.14772 | − | 0.825033i |
158.2 | −0.419490 | + | 0.173759i | 0.706330 | − | 1.58149i | −1.26843 | + | 1.26843i | −3.00087 | − | 0.596910i | −0.0215020 | + | 0.786149i | 0.464975 | + | 2.33759i | 0.659211 | − | 1.59148i | −2.00219 | − | 2.23410i | 1.36255 | − | 0.271029i |
158.3 | 0.419490 | − | 0.173759i | −1.73140 | + | 0.0473558i | −1.26843 | + | 1.26843i | 3.00087 | + | 0.596910i | −0.718078 | + | 0.320711i | 0.464975 | + | 2.33759i | −0.659211 | + | 1.59148i | 2.99551 | − | 0.163984i | 1.36255 | − | 0.271029i |
158.4 | 1.88095 | − | 0.779115i | 1.65580 | − | 0.508244i | 1.51674 | − | 1.51674i | 2.03727 | + | 0.405238i | 2.71850 | − | 2.24604i | −0.388855 | − | 1.95490i | 0.112963 | − | 0.272718i | 2.48338 | − | 1.68311i | 4.14772 | − | 0.825033i |
224.1 | −0.762502 | − | 1.84084i | 1.47444 | + | 0.908865i | −1.39308 | + | 1.39308i | 0.360100 | − | 0.240611i | 0.548817 | − | 3.40722i | −1.52969 | + | 2.28935i | −0.0550167 | − | 0.0227887i | 1.34793 | + | 2.68013i | −0.717504 | − | 0.479421i |
224.2 | −0.295520 | − | 0.713449i | 0.521102 | − | 1.65180i | 0.992537 | − | 0.992537i | −2.16012 | + | 1.44335i | −1.33247 | + | 0.116362i | 2.14701 | − | 3.21323i | −2.42834 | − | 1.00585i | −2.45691 | − | 1.72151i | 1.66811 | + | 1.11460i |
224.3 | 0.295520 | + | 0.713449i | −0.150682 | + | 1.72548i | 0.992537 | − | 0.992537i | 2.16012 | − | 1.44335i | −1.27557 | + | 0.402411i | 2.14701 | − | 3.21323i | 2.42834 | + | 1.00585i | −2.95459 | − | 0.520000i | 1.66811 | + | 1.11460i |
224.4 | 0.762502 | + | 1.84084i | 1.71001 | − | 0.275439i | −1.39308 | + | 1.39308i | −0.360100 | + | 0.240611i | 1.81093 | + | 2.93784i | −1.52969 | + | 2.28935i | 0.0550167 | + | 0.0227887i | 2.84827 | − | 0.942008i | −0.717504 | − | 0.479421i |
329.1 | −0.762502 | + | 1.84084i | 1.47444 | − | 0.908865i | −1.39308 | − | 1.39308i | 0.360100 | + | 0.240611i | 0.548817 | + | 3.40722i | −1.52969 | − | 2.28935i | −0.0550167 | + | 0.0227887i | 1.34793 | − | 2.68013i | −0.717504 | + | 0.479421i |
329.2 | −0.295520 | + | 0.713449i | 0.521102 | + | 1.65180i | 0.992537 | + | 0.992537i | −2.16012 | − | 1.44335i | −1.33247 | − | 0.116362i | 2.14701 | + | 3.21323i | −2.42834 | + | 1.00585i | −2.45691 | + | 1.72151i | 1.66811 | − | 1.11460i |
329.3 | 0.295520 | − | 0.713449i | −0.150682 | − | 1.72548i | 0.992537 | + | 0.992537i | 2.16012 | + | 1.44335i | −1.27557 | − | 0.402411i | 2.14701 | + | 3.21323i | 2.42834 | − | 1.00585i | −2.95459 | + | 0.520000i | 1.66811 | − | 1.11460i |
329.4 | 0.762502 | − | 1.84084i | 1.71001 | + | 0.275439i | −1.39308 | − | 1.39308i | −0.360100 | − | 0.240611i | 1.81093 | − | 2.93784i | −1.52969 | − | 2.28935i | 0.0550167 | − | 0.0227887i | 2.84827 | + | 0.942008i | −0.717504 | + | 0.479421i |
See all 32 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
17.e | odd | 16 | 1 | inner |
51.i | even | 16 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 867.2.i.h | 32 | |
3.b | odd | 2 | 1 | inner | 867.2.i.h | 32 | |
17.b | even | 2 | 1 | 51.2.i.a | ✓ | 32 | |
17.c | even | 4 | 1 | 867.2.i.c | 32 | ||
17.c | even | 4 | 1 | 867.2.i.d | 32 | ||
17.d | even | 8 | 1 | 867.2.i.b | 32 | ||
17.d | even | 8 | 1 | 867.2.i.f | 32 | ||
17.d | even | 8 | 1 | 867.2.i.g | 32 | ||
17.d | even | 8 | 1 | 867.2.i.i | 32 | ||
17.e | odd | 16 | 1 | 51.2.i.a | ✓ | 32 | |
17.e | odd | 16 | 1 | 867.2.i.b | 32 | ||
17.e | odd | 16 | 1 | 867.2.i.c | 32 | ||
17.e | odd | 16 | 1 | 867.2.i.d | 32 | ||
17.e | odd | 16 | 1 | 867.2.i.f | 32 | ||
17.e | odd | 16 | 1 | 867.2.i.g | 32 | ||
17.e | odd | 16 | 1 | inner | 867.2.i.h | 32 | |
17.e | odd | 16 | 1 | 867.2.i.i | 32 | ||
51.c | odd | 2 | 1 | 51.2.i.a | ✓ | 32 | |
51.f | odd | 4 | 1 | 867.2.i.c | 32 | ||
51.f | odd | 4 | 1 | 867.2.i.d | 32 | ||
51.g | odd | 8 | 1 | 867.2.i.b | 32 | ||
51.g | odd | 8 | 1 | 867.2.i.f | 32 | ||
51.g | odd | 8 | 1 | 867.2.i.g | 32 | ||
51.g | odd | 8 | 1 | 867.2.i.i | 32 | ||
51.i | even | 16 | 1 | 51.2.i.a | ✓ | 32 | |
51.i | even | 16 | 1 | 867.2.i.b | 32 | ||
51.i | even | 16 | 1 | 867.2.i.c | 32 | ||
51.i | even | 16 | 1 | 867.2.i.d | 32 | ||
51.i | even | 16 | 1 | 867.2.i.f | 32 | ||
51.i | even | 16 | 1 | 867.2.i.g | 32 | ||
51.i | even | 16 | 1 | inner | 867.2.i.h | 32 | |
51.i | even | 16 | 1 | 867.2.i.i | 32 | ||
68.d | odd | 2 | 1 | 816.2.cj.c | 32 | ||
68.i | even | 16 | 1 | 816.2.cj.c | 32 | ||
204.h | even | 2 | 1 | 816.2.cj.c | 32 | ||
204.t | odd | 16 | 1 | 816.2.cj.c | 32 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
51.2.i.a | ✓ | 32 | 17.b | even | 2 | 1 | |
51.2.i.a | ✓ | 32 | 17.e | odd | 16 | 1 | |
51.2.i.a | ✓ | 32 | 51.c | odd | 2 | 1 | |
51.2.i.a | ✓ | 32 | 51.i | even | 16 | 1 | |
816.2.cj.c | 32 | 68.d | odd | 2 | 1 | ||
816.2.cj.c | 32 | 68.i | even | 16 | 1 | ||
816.2.cj.c | 32 | 204.h | even | 2 | 1 | ||
816.2.cj.c | 32 | 204.t | odd | 16 | 1 | ||
867.2.i.b | 32 | 17.d | even | 8 | 1 | ||
867.2.i.b | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.b | 32 | 51.g | odd | 8 | 1 | ||
867.2.i.b | 32 | 51.i | even | 16 | 1 | ||
867.2.i.c | 32 | 17.c | even | 4 | 1 | ||
867.2.i.c | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.c | 32 | 51.f | odd | 4 | 1 | ||
867.2.i.c | 32 | 51.i | even | 16 | 1 | ||
867.2.i.d | 32 | 17.c | even | 4 | 1 | ||
867.2.i.d | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.d | 32 | 51.f | odd | 4 | 1 | ||
867.2.i.d | 32 | 51.i | even | 16 | 1 | ||
867.2.i.f | 32 | 17.d | even | 8 | 1 | ||
867.2.i.f | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.f | 32 | 51.g | odd | 8 | 1 | ||
867.2.i.f | 32 | 51.i | even | 16 | 1 | ||
867.2.i.g | 32 | 17.d | even | 8 | 1 | ||
867.2.i.g | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.g | 32 | 51.g | odd | 8 | 1 | ||
867.2.i.g | 32 | 51.i | even | 16 | 1 | ||
867.2.i.h | 32 | 1.a | even | 1 | 1 | trivial | |
867.2.i.h | 32 | 3.b | odd | 2 | 1 | inner | |
867.2.i.h | 32 | 17.e | odd | 16 | 1 | inner | |
867.2.i.h | 32 | 51.i | even | 16 | 1 | inner | |
867.2.i.i | 32 | 17.d | even | 8 | 1 | ||
867.2.i.i | 32 | 17.e | odd | 16 | 1 | ||
867.2.i.i | 32 | 51.g | odd | 8 | 1 | ||
867.2.i.i | 32 | 51.i | even | 16 | 1 |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(867, [\chi])\):
\( T_{2}^{32} + 8 T_{2}^{30} + 32 T_{2}^{28} - 40 T_{2}^{26} + 366 T_{2}^{24} + 2552 T_{2}^{22} + \cdots + 1156 \) |
\( T_{5}^{32} - 8 T_{5}^{30} - 52 T_{5}^{28} + 656 T_{5}^{26} + 456 T_{5}^{24} - 27912 T_{5}^{22} + \cdots + 1156 \) |
\( T_{7}^{16} - 8 T_{7}^{15} + 44 T_{7}^{14} - 160 T_{7}^{13} + 534 T_{7}^{12} - 1632 T_{7}^{11} + \cdots + 16 \) |