Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [381,2,Mod(20,381)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(381, base_ring=CyclotomicField(6))
chi = DirichletCharacter(H, H._module([3, 5]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("381.20");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 381 = 3 \cdot 127 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 381.g (of order \(6\), degree \(2\), 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: | \(3.04230031701\) |
Analytic rank: | \(0\) |
Dimension: | \(72\) |
Relative dimension: | \(36\) over \(\Q(\zeta_{6})\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{6}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
20.1 | − | 2.71445i | −0.518986 | − | 1.65247i | −5.36824 | 0.893206 | −4.48554 | + | 1.40876i | −1.99265 | + | 1.15046i | 9.14292i | −2.46131 | + | 1.71522i | − | 2.42456i | ||||||||
20.2 | − | 2.52018i | 1.72695 | + | 0.132856i | −4.35132 | 2.75121 | 0.334820 | − | 4.35222i | −0.393176 | + | 0.227000i | 5.92576i | 2.96470 | + | 0.458869i | − | 6.93355i | ||||||||
20.3 | − | 2.51015i | −0.291859 | + | 1.70728i | −4.30086 | −1.12928 | 4.28554 | + | 0.732611i | 4.45267 | − | 2.57075i | 5.77550i | −2.82964 | − | 0.996573i | 2.83467i | |||||||||
20.4 | − | 2.41695i | 0.744448 | + | 1.56390i | −3.84163 | −1.78400 | 3.77987 | − | 1.79929i | −3.12854 | + | 1.80626i | 4.45113i | −1.89159 | + | 2.32849i | 4.31183i | |||||||||
20.5 | − | 2.23119i | 0.884630 | − | 1.48910i | −2.97822 | 0.125754 | −3.32248 | − | 1.97378i | 2.84593 | − | 1.64310i | 2.18260i | −1.43486 | − | 2.63461i | − | 0.280582i | ||||||||
20.6 | − | 2.19154i | −1.72917 | − | 0.0998148i | −2.80283 | 2.88844 | −0.218748 | + | 3.78954i | 2.87116 | − | 1.65766i | 1.75944i | 2.98007 | + | 0.345194i | − | 6.33013i | ||||||||
20.7 | − | 2.18507i | −1.45123 | − | 0.945478i | −2.77451 | −4.24066 | −2.06593 | + | 3.17104i | 1.53870 | − | 0.888369i | 1.69237i | 1.21214 | + | 2.74421i | 9.26613i | |||||||||
20.8 | − | 1.92695i | 1.25735 | − | 1.19125i | −1.71313 | −2.87921 | −2.29547 | − | 2.42285i | −3.83327 | + | 2.21314i | − | 0.552789i | 0.161862 | − | 2.99563i | 5.54808i | ||||||||
20.9 | − | 1.50929i | −1.20481 | + | 1.24436i | −0.277965 | −1.72647 | 1.87811 | + | 1.81841i | −0.611156 | + | 0.352851i | − | 2.59905i | −0.0968780 | − | 2.99844i | 2.60575i | ||||||||
20.10 | − | 1.44130i | −0.773084 | + | 1.54995i | −0.0773408 | 1.69273 | 2.23394 | + | 1.11424i | −1.09077 | + | 0.629759i | − | 2.77113i | −1.80468 | − | 2.39648i | − | 2.43973i | |||||||
20.11 | − | 1.39140i | 1.66784 | + | 0.467248i | 0.0640060 | −2.84814 | 0.650129 | − | 2.32063i | 2.53428 | − | 1.46316i | − | 2.87186i | 2.56336 | + | 1.55859i | 3.96290i | ||||||||
20.12 | − | 1.23123i | 0.393008 | − | 1.68687i | 0.484071 | 4.31193 | −2.07693 | − | 0.483883i | −2.81895 | + | 1.62752i | − | 3.05846i | −2.69109 | − | 1.32591i | − | 5.30898i | |||||||
20.13 | − | 1.06432i | −0.232359 | − | 1.71639i | 0.867231 | −0.493663 | −1.82679 | + | 0.247304i | 1.71308 | − | 0.989047i | − | 3.05164i | −2.89202 | + | 0.797640i | 0.525413i | ||||||||
20.14 | − | 0.644462i | −1.66095 | − | 0.491155i | 1.58467 | −1.85134 | −0.316531 | + | 1.07042i | −4.13935 | + | 2.38985i | − | 2.31018i | 2.51753 | + | 1.63157i | 1.19312i | ||||||||
20.15 | − | 0.526296i | 1.69800 | − | 0.341774i | 1.72301 | −0.00872515 | −0.179874 | − | 0.893648i | −0.609981 | + | 0.352173i | − | 1.95941i | 2.76638 | − | 1.16066i | 0.00459201i | ||||||||
20.16 | − | 0.367913i | 1.19765 | + | 1.25126i | 1.86464 | 2.77415 | 0.460353 | − | 0.440630i | −3.10329 | + | 1.79168i | − | 1.42185i | −0.131284 | + | 2.99713i | − | 1.02065i | |||||||
20.17 | − | 0.314327i | −1.34652 | − | 1.08944i | 1.90120 | 1.52320 | −0.342441 | + | 0.423247i | 2.18809 | − | 1.26330i | − | 1.22625i | 0.626226 | + | 2.93391i | − | 0.478781i | |||||||
20.18 | − | 0.0526567i | −1.62710 | + | 0.593763i | 1.99723 | −3.05043 | 0.0312656 | + | 0.0856775i | 2.07723 | − | 1.19929i | − | 0.210481i | 2.29489 | − | 1.93222i | 0.160626i | ||||||||
20.19 | 0.0526567i | −1.32776 | + | 1.11223i | 1.99723 | 3.05043 | −0.0585661 | − | 0.0699155i | 2.07723 | − | 1.19929i | 0.210481i | 0.525907 | − | 2.95354i | 0.160626i | ||||||||||
20.20 | 0.314327i | 0.270226 | + | 1.71084i | 1.90120 | −1.52320 | −0.537763 | + | 0.0849394i | 2.18809 | − | 1.26330i | 1.22625i | −2.85396 | + | 0.924629i | − | 0.478781i | |||||||||
See all 72 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
127.d | odd | 6 | 1 | inner |
381.g | even | 6 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 381.2.g.c | ✓ | 72 |
3.b | odd | 2 | 1 | inner | 381.2.g.c | ✓ | 72 |
127.d | odd | 6 | 1 | inner | 381.2.g.c | ✓ | 72 |
381.g | even | 6 | 1 | inner | 381.2.g.c | ✓ | 72 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
381.2.g.c | ✓ | 72 | 1.a | even | 1 | 1 | trivial |
381.2.g.c | ✓ | 72 | 3.b | odd | 2 | 1 | inner |
381.2.g.c | ✓ | 72 | 127.d | odd | 6 | 1 | inner |
381.2.g.c | ✓ | 72 | 381.g | even | 6 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(381, [\chi])\):
\( T_{2}^{36} + 54 T_{2}^{34} + 1323 T_{2}^{32} + 19465 T_{2}^{30} + 191861 T_{2}^{28} + 1338395 T_{2}^{26} + \cdots + 49 \) |
\( T_{5}^{36} - 103 T_{5}^{34} + 4743 T_{5}^{32} - 129540 T_{5}^{30} + 2346705 T_{5}^{28} - 29859989 T_{5}^{26} + \cdots + 6561 \) |