Properties

Label 3387.1.c.g
Level $3387$
Weight $1$
Character orbit 3387.c
Analytic conductor $1.690$
Analytic rank $0$
Dimension $6$
Projective image $D_{18}$
RM discriminant 1129
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [3387,1,Mod(3386,3387)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3387, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("3387.3386");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 3387 = 3 \cdot 1129 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 3387.c (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: \(1.69033319779\)
Analytic rank: \(0\)
Dimension: \(6\)
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: \( 1 \)
Twist minimal: yes
Projective image: \(D_{18}\)
Projective field: Galois closure of 18.0.51956851764606118870683564963.1

$q$-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.

\(f(q)\) \(=\) \( q + ( - \zeta_{18}^{8} - \zeta_{18}) q^{2} - \zeta_{18}^{6} q^{3} + ( - \zeta_{18}^{7} + \zeta_{18}^{2} - 1) q^{4} + (\zeta_{18}^{8} + \zeta_{18}) q^{5} + (\zeta_{18}^{7} - \zeta_{18}^{5}) q^{6} + (\zeta_{18}^{5} - \zeta_{18}^{4}) q^{7} + (\zeta_{18}^{8} - \zeta_{18}^{6} + \cdots + \zeta_{18}) q^{8} + \cdots - \zeta_{18}^{3} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + ( - \zeta_{18}^{8} - \zeta_{18}) q^{2} - \zeta_{18}^{6} q^{3} + ( - \zeta_{18}^{7} + \zeta_{18}^{2} - 1) q^{4} + (\zeta_{18}^{8} + \zeta_{18}) q^{5} + (\zeta_{18}^{7} - \zeta_{18}^{5}) q^{6} + (\zeta_{18}^{5} - \zeta_{18}^{4}) q^{7} + (\zeta_{18}^{8} - \zeta_{18}^{6} + \cdots + \zeta_{18}) q^{8} + \cdots + ( - \zeta_{18}^{8} + \zeta_{18}^{7} + \cdots - \zeta_{18}) q^{98} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 6 q + 3 q^{3} - 6 q^{4} - 3 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 6 q + 3 q^{3} - 6 q^{4} - 3 q^{9} + 12 q^{10} - 3 q^{12} + 6 q^{16} - 9 q^{24} - 6 q^{25} - 6 q^{27} + 6 q^{28} + 6 q^{30} + 3 q^{36} - 12 q^{40} - 9 q^{42} - 6 q^{46} + 3 q^{48} + 6 q^{49} + 9 q^{60} - 12 q^{64} - 6 q^{70} - 9 q^{72} - 3 q^{75} - 3 q^{81} + 3 q^{84} - 6 q^{90} - 6 q^{94} + 9 q^{96} - 6 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/3387\mathbb{Z}\right)^\times\).

\(n\) \(1130\) \(2269\)
\(\chi(n)\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
3386.1
−0.173648 + 0.984808i
−0.766044 + 0.642788i
0.939693 + 0.342020i
0.939693 0.342020i
−0.766044 0.642788i
−0.173648 0.984808i
1.96962i 0.500000 + 0.866025i −2.87939 1.96962i 1.70574 0.984808i −1.53209 3.70167i −0.500000 + 0.866025i 3.87939
3386.2 1.28558i 0.500000 0.866025i −0.652704 1.28558i −1.11334 0.642788i 1.87939 0.446476i −0.500000 0.866025i 1.65270
3386.3 0.684040i 0.500000 0.866025i 0.532089 0.684040i −0.592396 0.342020i −0.347296 1.04801i −0.500000 0.866025i 0.467911
3386.4 0.684040i 0.500000 + 0.866025i 0.532089 0.684040i −0.592396 + 0.342020i −0.347296 1.04801i −0.500000 + 0.866025i 0.467911
3386.5 1.28558i 0.500000 + 0.866025i −0.652704 1.28558i −1.11334 + 0.642788i 1.87939 0.446476i −0.500000 + 0.866025i 1.65270
3386.6 1.96962i 0.500000 0.866025i −2.87939 1.96962i 1.70574 + 0.984808i −1.53209 3.70167i −0.500000 0.866025i 3.87939
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 3386.6
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
1129.b even 2 1 RM by \(\Q(\sqrt{1129}) \)
3.b odd 2 1 inner
3387.c odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 3387.1.c.g 6
3.b odd 2 1 inner 3387.1.c.g 6
1129.b even 2 1 RM 3387.1.c.g 6
3387.c odd 2 1 inner 3387.1.c.g 6
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3387.1.c.g 6 1.a even 1 1 trivial
3387.1.c.g 6 3.b odd 2 1 inner
3387.1.c.g 6 1129.b even 2 1 RM
3387.1.c.g 6 3387.c odd 2 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{1}^{\mathrm{new}}(3387, [\chi])\):

\( T_{2}^{6} + 6T_{2}^{4} + 9T_{2}^{2} + 3 \) Copy content Toggle raw display
\( T_{7}^{3} - 3T_{7} - 1 \) Copy content Toggle raw display
\( T_{11} \) Copy content Toggle raw display

Hecke characteristic polynomials

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