Newspace parameters
comment: Compute space of new eigenforms
[N,k,chi] = [855,2,Mod(199,855)]
mf = mfinit([N,k,chi],0)
lf = mfeigenbasis(mf)
from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(855, base_ring=CyclotomicField(18))
chi = DirichletCharacter(H, H._module([0, 9, 8]))
N = Newforms(chi, 2, names="a")
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
chi := DirichletCharacter("855.199");
S:= CuspForms(chi, 2);
N := Newforms(S);
Level: | \( N \) | \(=\) | \( 855 = 3^{2} \cdot 5 \cdot 19 \) |
Weight: | \( k \) | \(=\) | \( 2 \) |
Character orbit: | \([\chi]\) | \(=\) | 855.da (of order \(18\), degree \(6\), 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: | \(6.82720937282\) |
Analytic rank: | \(0\) |
Dimension: | \(96\) |
Relative dimension: | \(16\) over \(\Q(\zeta_{18})\) |
Twist minimal: | yes |
Sato-Tate group: | $\mathrm{SU}(2)[C_{18}]$ |
$q$-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 | \( a_{2} \) | \( a_{3} \) | \( a_{4} \) | \( a_{5} \) | \( a_{6} \) | \( a_{7} \) | \( a_{8} \) | \( a_{9} \) | \( a_{10} \) | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
199.1 | −2.44017 | + | 0.430268i | 0 | 3.88992 | − | 1.41581i | −1.18385 | + | 1.89697i | 0 | −3.88542 | − | 2.24325i | −4.59119 | + | 2.65072i | 0 | 2.07259 | − | 5.13831i | ||||||
199.2 | −2.44017 | + | 0.430268i | 0 | 3.88992 | − | 1.41581i | −0.312467 | + | 2.21413i | 0 | 3.88542 | + | 2.24325i | −4.59119 | + | 2.65072i | 0 | −0.190196 | − | 5.53730i | ||||||
199.3 | −1.88977 | + | 0.333218i | 0 | 1.58082 | − | 0.575373i | −2.03350 | − | 0.929980i | 0 | 1.86561 | + | 1.07711i | 0.528003 | − | 0.304842i | 0 | 4.15275 | + | 1.07985i | ||||||
199.4 | −1.88977 | + | 0.333218i | 0 | 1.58082 | − | 0.575373i | 2.15553 | + | 0.594705i | 0 | −1.86561 | − | 1.07711i | 0.528003 | − | 0.304842i | 0 | −4.27164 | − | 0.405594i | ||||||
199.5 | −1.01346 | + | 0.178700i | 0 | −0.884219 | + | 0.321829i | −2.13118 | + | 0.676823i | 0 | 0.455113 | + | 0.262760i | 2.62105 | − | 1.51326i | 0 | 2.03891 | − | 1.06677i | ||||||
199.6 | −1.01346 | + | 0.178700i | 0 | −0.884219 | + | 0.321829i | 1.19752 | + | 1.88837i | 0 | −0.455113 | − | 0.262760i | 2.62105 | − | 1.51326i | 0 | −1.55109 | − | 1.69979i | ||||||
199.7 | −0.339897 | + | 0.0599330i | 0 | −1.76745 | + | 0.643298i | −2.07651 | + | 0.829529i | 0 | −2.36837 | − | 1.36738i | 1.16000 | − | 0.669724i | 0 | 0.656083 | − | 0.406406i | ||||||
199.8 | −0.339897 | + | 0.0599330i | 0 | −1.76745 | + | 0.643298i | 1.05749 | + | 1.97021i | 0 | 2.36837 | + | 1.36738i | 1.16000 | − | 0.669724i | 0 | −0.477517 | − | 0.606290i | ||||||
199.9 | 0.339897 | − | 0.0599330i | 0 | −1.76745 | + | 0.643298i | −1.05749 | − | 1.97021i | 0 | 2.36837 | + | 1.36738i | −1.16000 | + | 0.669724i | 0 | −0.477517 | − | 0.606290i | ||||||
199.10 | 0.339897 | − | 0.0599330i | 0 | −1.76745 | + | 0.643298i | 2.07651 | − | 0.829529i | 0 | −2.36837 | − | 1.36738i | −1.16000 | + | 0.669724i | 0 | 0.656083 | − | 0.406406i | ||||||
199.11 | 1.01346 | − | 0.178700i | 0 | −0.884219 | + | 0.321829i | −1.19752 | − | 1.88837i | 0 | −0.455113 | − | 0.262760i | −2.62105 | + | 1.51326i | 0 | −1.55109 | − | 1.69979i | ||||||
199.12 | 1.01346 | − | 0.178700i | 0 | −0.884219 | + | 0.321829i | 2.13118 | − | 0.676823i | 0 | 0.455113 | + | 0.262760i | −2.62105 | + | 1.51326i | 0 | 2.03891 | − | 1.06677i | ||||||
199.13 | 1.88977 | − | 0.333218i | 0 | 1.58082 | − | 0.575373i | −2.15553 | − | 0.594705i | 0 | −1.86561 | − | 1.07711i | −0.528003 | + | 0.304842i | 0 | −4.27164 | − | 0.405594i | ||||||
199.14 | 1.88977 | − | 0.333218i | 0 | 1.58082 | − | 0.575373i | 2.03350 | + | 0.929980i | 0 | 1.86561 | + | 1.07711i | −0.528003 | + | 0.304842i | 0 | 4.15275 | + | 1.07985i | ||||||
199.15 | 2.44017 | − | 0.430268i | 0 | 3.88992 | − | 1.41581i | 0.312467 | − | 2.21413i | 0 | 3.88542 | + | 2.24325i | 4.59119 | − | 2.65072i | 0 | −0.190196 | − | 5.53730i | ||||||
199.16 | 2.44017 | − | 0.430268i | 0 | 3.88992 | − | 1.41581i | 1.18385 | − | 1.89697i | 0 | −3.88542 | − | 2.24325i | 4.59119 | − | 2.65072i | 0 | 2.07259 | − | 5.13831i | ||||||
244.1 | −1.63349 | + | 1.94672i | 0 | −0.774122 | − | 4.39026i | 1.32890 | + | 1.79834i | 0 | −4.00758 | + | 2.31378i | 5.40953 | + | 3.12319i | 0 | −5.67160 | − | 0.350572i | ||||||
244.2 | −1.63349 | + | 1.94672i | 0 | −0.774122 | − | 4.39026i | 1.86383 | − | 1.23537i | 0 | 4.00758 | − | 2.31378i | 5.40953 | + | 3.12319i | 0 | −0.639617 | + | 5.64631i | ||||||
244.3 | −1.26951 | + | 1.51294i | 0 | −0.330046 | − | 1.87178i | −0.00846887 | + | 2.23605i | 0 | 1.82455 | − | 1.05340i | −0.169918 | − | 0.0981021i | 0 | −3.37227 | − | 2.85150i | ||||||
244.4 | −1.26951 | + | 1.51294i | 0 | −0.330046 | − | 1.87178i | 0.756817 | − | 2.10410i | 0 | −1.82455 | + | 1.05340i | −0.169918 | − | 0.0981021i | 0 | 2.22260 | + | 3.81620i | ||||||
See all 96 embeddings |
Inner twists
Char | Parity | Ord | Mult | Type |
---|---|---|---|---|
1.a | even | 1 | 1 | trivial |
3.b | odd | 2 | 1 | inner |
5.b | even | 2 | 1 | inner |
15.d | odd | 2 | 1 | inner |
19.e | even | 9 | 1 | inner |
57.l | odd | 18 | 1 | inner |
95.p | even | 18 | 1 | inner |
285.bd | odd | 18 | 1 | inner |
Twists
By twisting character orbit | |||||||
---|---|---|---|---|---|---|---|
Char | Parity | Ord | Mult | Type | Twist | Min | Dim |
1.a | even | 1 | 1 | trivial | 855.2.da.c | ✓ | 96 |
3.b | odd | 2 | 1 | inner | 855.2.da.c | ✓ | 96 |
5.b | even | 2 | 1 | inner | 855.2.da.c | ✓ | 96 |
15.d | odd | 2 | 1 | inner | 855.2.da.c | ✓ | 96 |
19.e | even | 9 | 1 | inner | 855.2.da.c | ✓ | 96 |
57.l | odd | 18 | 1 | inner | 855.2.da.c | ✓ | 96 |
95.p | even | 18 | 1 | inner | 855.2.da.c | ✓ | 96 |
285.bd | odd | 18 | 1 | inner | 855.2.da.c | ✓ | 96 |
By twisted newform orbit | |||||||
---|---|---|---|---|---|---|---|
Twist | Min | Dim | Char | Parity | Ord | Mult | Type |
855.2.da.c | ✓ | 96 | 1.a | even | 1 | 1 | trivial |
855.2.da.c | ✓ | 96 | 3.b | odd | 2 | 1 | inner |
855.2.da.c | ✓ | 96 | 5.b | even | 2 | 1 | inner |
855.2.da.c | ✓ | 96 | 15.d | odd | 2 | 1 | inner |
855.2.da.c | ✓ | 96 | 19.e | even | 9 | 1 | inner |
855.2.da.c | ✓ | 96 | 57.l | odd | 18 | 1 | inner |
855.2.da.c | ✓ | 96 | 95.p | even | 18 | 1 | inner |
855.2.da.c | ✓ | 96 | 285.bd | odd | 18 | 1 | inner |
Hecke kernels
This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{48} + 6 T_{2}^{44} - 269 T_{2}^{42} - 444 T_{2}^{40} + 1098 T_{2}^{38} + 59043 T_{2}^{36} + \cdots + 18496 \) acting on \(S_{2}^{\mathrm{new}}(855, [\chi])\).