Properties

Label 2151.1.f.a
Level $2151$
Weight $1$
Character orbit 2151.f
Analytic conductor $1.073$
Analytic rank $0$
Dimension $6$
Projective image $D_{9}$
CM discriminant -239
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2151,1,Mod(238,2151)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2151, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([2, 3]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2151.238");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2151 = 3^{2} \cdot 239 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2151.f (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: \(1.07348884217\)
Analytic rank: \(0\)
Dimension: \(6\)
Relative dimension: \(3\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\zeta_{18})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{6} - x^{3} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 3 \)
Twist minimal: yes
Projective image: \(D_{9}\)
Projective field: Galois closure of 9.1.1733990286981681.1

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

The \(q\)-expansion and trace form are shown below.

\(f(q)\) \(=\) \( q + (\zeta_{18}^{8} + \zeta_{18}^{4}) q^{2} - \zeta_{18}^{3} q^{3} + (\zeta_{18}^{8} + \cdots - \zeta_{18}^{3}) q^{4} + \cdots + \zeta_{18}^{6} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{18}^{8} + \zeta_{18}^{4}) q^{2} - \zeta_{18}^{3} q^{3} + (\zeta_{18}^{8} + \cdots - \zeta_{18}^{3}) q^{4} + \cdots + (\zeta_{18}^{4} + \zeta_{18}^{2}) q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q - 3 q^{3} - 3 q^{4} - 6 q^{8} - 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 6 q - 3 q^{3} - 3 q^{4} - 6 q^{8} - 3 q^{9} - 6 q^{10} - 3 q^{12} - 3 q^{16} + 3 q^{20} + 3 q^{22} + 3 q^{24} - 3 q^{25} + 6 q^{27} + 3 q^{30} + 3 q^{32} - 6 q^{34} + 6 q^{36} + 3 q^{40} - 6 q^{44} + 6 q^{48} - 3 q^{49} - 6 q^{50} + 12 q^{55} + 3 q^{58} - 6 q^{60} - 6 q^{62} + 3 q^{66} + 3 q^{68} + 12 q^{71} + 3 q^{72} + 6 q^{75} + 6 q^{80} - 3 q^{81} + 3 q^{85} + 3 q^{88} + 3 q^{90} + 3 q^{96}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2151\mathbb{Z}\right)^\times\).

\(n\) \(479\) \(1441\)
\(\chi(n)\) \(-\zeta_{18}^{3}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
238.1
0.939693 0.342020i
−0.766044 0.642788i
−0.173648 + 0.984808i
0.939693 + 0.342020i
−0.766044 + 0.642788i
−0.173648 0.984808i
−0.766044 1.32683i −0.500000 + 0.866025i −0.673648 + 1.16679i 0.939693 1.62760i 1.53209 0 0.532089 −0.500000 0.866025i −2.87939
238.2 −0.173648 0.300767i −0.500000 + 0.866025i 0.439693 0.761570i −0.766044 + 1.32683i 0.347296 0 −0.652704 −0.500000 0.866025i 0.532089
238.3 0.939693 + 1.62760i −0.500000 + 0.866025i −1.26604 + 2.19285i −0.173648 + 0.300767i −1.87939 0 −2.87939 −0.500000 0.866025i −0.652704
1672.1 −0.766044 + 1.32683i −0.500000 0.866025i −0.673648 1.16679i 0.939693 + 1.62760i 1.53209 0 0.532089 −0.500000 + 0.866025i −2.87939
1672.2 −0.173648 + 0.300767i −0.500000 0.866025i 0.439693 + 0.761570i −0.766044 1.32683i 0.347296 0 −0.652704 −0.500000 + 0.866025i 0.532089
1672.3 0.939693 1.62760i −0.500000 0.866025i −1.26604 2.19285i −0.173648 0.300767i −1.87939 0 −2.87939 −0.500000 + 0.866025i −0.652704
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 238.3
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
239.b odd 2 1 CM by \(\Q(\sqrt{-239}) \)
9.c even 3 1 inner
2151.f odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2151.1.f.a 6
9.c even 3 1 inner 2151.1.f.a 6
239.b odd 2 1 CM 2151.1.f.a 6
2151.f odd 6 1 inner 2151.1.f.a 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2151.1.f.a 6 1.a even 1 1 trivial
2151.1.f.a 6 9.c even 3 1 inner
2151.1.f.a 6 239.b odd 2 1 CM
2151.1.f.a 6 2151.f odd 6 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{6} + 3T_{2}^{4} + 2T_{2}^{3} + 9T_{2}^{2} + 3T_{2} + 1 \) acting on \(S_{1}^{\mathrm{new}}(2151, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( (T^{2} + T + 1)^{3} \) Copy content Toggle raw display
$5$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{6} \) Copy content Toggle raw display
$11$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( T^{6} \) Copy content Toggle raw display
$17$ \( (T^{3} - 3 T + 1)^{2} \) Copy content Toggle raw display
$19$ \( T^{6} \) Copy content Toggle raw display
$23$ \( T^{6} \) Copy content Toggle raw display
$29$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$31$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$37$ \( T^{6} \) Copy content Toggle raw display
$41$ \( T^{6} \) Copy content Toggle raw display
$43$ \( T^{6} \) Copy content Toggle raw display
$47$ \( T^{6} \) Copy content Toggle raw display
$53$ \( T^{6} \) Copy content Toggle raw display
$59$ \( T^{6} \) Copy content Toggle raw display
$61$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$67$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$71$ \( (T - 2)^{6} \) Copy content Toggle raw display
$73$ \( T^{6} \) Copy content Toggle raw display
$79$ \( T^{6} \) Copy content Toggle raw display
$83$ \( T^{6} + 3 T^{4} + \cdots + 1 \) Copy content Toggle raw display
$89$ \( T^{6} \) Copy content Toggle raw display
$97$ \( T^{6} \) Copy content Toggle raw display
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