Properties

Label 891.2.d.c
Level $891$
Weight $2$
Character orbit 891.d
Analytic conductor $7.115$
Analytic rank $0$
Dimension $24$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [891,2,Mod(890,891)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(891, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("891.890");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 891 = 3^{4} \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 891.d (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: \(7.11467082010\)
Analytic rank: \(0\)
Dimension: \(24\)
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.

\(\operatorname{Tr}(f)(q) = \) \( 24 q + 24 q^{4}+O(q^{10}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q) = \) \( 24 q + 24 q^{4} + 48 q^{16} - 12 q^{22} - 24 q^{25} - 36 q^{55} - 24 q^{58} + 72 q^{64} - 48 q^{67} + 48 q^{70} - 60 q^{88} - 48 q^{91} - 24 q^{97}+O(q^{100}) \) Copy content Toggle raw display

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   \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
890.1 −2.72623 0 5.43234 3.56048i 0 1.74007i −9.35736 0 9.70671i
890.2 −2.72623 0 5.43234 3.56048i 0 1.74007i −9.35736 0 9.70671i
890.3 −2.29736 0 3.27787 1.02695i 0 2.98168i −2.93572 0 2.35926i
890.4 −2.29736 0 3.27787 1.02695i 0 2.98168i −2.93572 0 2.35926i
890.5 −1.78114 0 1.17248 2.30190i 0 1.42536i 1.47394 0 4.10001i
890.6 −1.78114 0 1.17248 2.30190i 0 1.42536i 1.47394 0 4.10001i
890.7 −1.28235 0 −0.355579 2.71071i 0 0.132015i 3.02068 0 3.47607i
890.8 −1.28235 0 −0.355579 2.71071i 0 0.132015i 3.02068 0 3.47607i
890.9 −0.587929 0 −1.65434 3.09798i 0 4.55548i 2.14849 0 1.82139i
890.10 −0.587929 0 −1.65434 3.09798i 0 4.55548i 2.14849 0 1.82139i
890.11 −0.356696 0 −1.87277 0.155629i 0 2.69819i 1.38140 0 0.0555122i
890.12 −0.356696 0 −1.87277 0.155629i 0 2.69819i 1.38140 0 0.0555122i
890.13 0.356696 0 −1.87277 0.155629i 0 2.69819i −1.38140 0 0.0555122i
890.14 0.356696 0 −1.87277 0.155629i 0 2.69819i −1.38140 0 0.0555122i
890.15 0.587929 0 −1.65434 3.09798i 0 4.55548i −2.14849 0 1.82139i
890.16 0.587929 0 −1.65434 3.09798i 0 4.55548i −2.14849 0 1.82139i
890.17 1.28235 0 −0.355579 2.71071i 0 0.132015i −3.02068 0 3.47607i
890.18 1.28235 0 −0.355579 2.71071i 0 0.132015i −3.02068 0 3.47607i
890.19 1.78114 0 1.17248 2.30190i 0 1.42536i −1.47394 0 4.10001i
890.20 1.78114 0 1.17248 2.30190i 0 1.42536i −1.47394 0 4.10001i
See all 24 embeddings
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 890.24
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
11.b odd 2 1 inner
33.d even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 891.2.d.c 24
3.b odd 2 1 inner 891.2.d.c 24
9.c even 3 2 891.2.g.f 48
9.d odd 6 2 891.2.g.f 48
11.b odd 2 1 inner 891.2.d.c 24
33.d even 2 1 inner 891.2.d.c 24
99.g even 6 2 891.2.g.f 48
99.h odd 6 2 891.2.g.f 48
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
891.2.d.c 24 1.a even 1 1 trivial
891.2.d.c 24 3.b odd 2 1 inner
891.2.d.c 24 11.b odd 2 1 inner
891.2.d.c 24 33.d even 2 1 inner
891.2.g.f 48 9.c even 3 2
891.2.g.f 48 9.d odd 6 2
891.2.g.f 48 99.g even 6 2
891.2.g.f 48 99.h odd 6 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{12} - 18T_{2}^{10} + 114T_{2}^{8} - 306T_{2}^{6} + 330T_{2}^{4} - 108T_{2}^{2} + 9 \) acting on \(S_{2}^{\mathrm{new}}(891, [\chi])\). Copy content Toggle raw display