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Properties

Label 1308.1.br.a
Level $1308$
Weight $1$
Character orbit 1308.br
Analytic conductor $0.653$
Analytic rank $0$
Dimension $18$
Projective image $D_{27}$
CM discriminant -3
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1308,1,Mod(5,1308)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1308, base_ring=CyclotomicField(54))
 
chi = DirichletCharacter(H, H._module([0, 27, 38]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1308.5");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1308 = 2^{2} \cdot 3 \cdot 109 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1308.br (of order \(54\), degree \(18\), 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: \(0.652777036524\)
Analytic rank: \(0\)
Dimension: \(18\)
Coefficient field: \(\Q(\zeta_{54})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{18} - x^{9} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2, a_3]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{27}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{27} - \cdots)\)

$q$-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.

\(f(q)\) \(=\) \( q + \zeta_{54}^{22} q^{3} + (\zeta_{54}^{6} - \zeta_{54}^{5}) q^{7} - \zeta_{54}^{17} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{54}^{22} q^{3} + (\zeta_{54}^{6} - \zeta_{54}^{5}) q^{7} - \zeta_{54}^{17} q^{9} + ( - \zeta_{54}^{25} - \zeta_{54}^{13}) q^{13} + (\zeta_{54}^{26} - \zeta_{54}^{25}) q^{19} + ( - \zeta_{54} + 1) q^{21} + \zeta_{54}^{2} q^{25} + \zeta_{54}^{12} q^{27} + (\zeta_{54}^{14} + \zeta_{54}^{2}) q^{31} + (\zeta_{54}^{16} - \zeta_{54}^{9}) q^{37} + (\zeta_{54}^{20} + \zeta_{54}^{8}) q^{39} + ( - \zeta_{54}^{23} - \zeta_{54}^{19}) q^{43} + (\zeta_{54}^{12} + \cdots + \zeta_{54}^{10}) q^{49} + \cdots + ( - \zeta_{54}^{13} - \zeta_{54}^{7}) q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 18 q+O(q^{10}) \) Copy content Toggle raw display \( 18 q + 18 q^{21} - 9 q^{37} - 9 q^{91} - 9 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Display 100 coefficients 10 coefficients

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1308\mathbb{Z}\right)^\times\).

\(n\) \(437\) \(655\) \(769\)
\(\chi(n)\) \(-1\) \(1\) \(-\zeta_{54}^{5}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
5.1
0.0581448 + 0.998308i
−0.597159 + 0.802123i
0.286803 − 0.957990i
−0.973045 − 0.230616i
0.686242 + 0.727374i
0.993238 − 0.116093i
−0.597159 − 0.802123i
0.286803 + 0.957990i
0.835488 − 0.549509i
0.993238 + 0.116093i
−0.396080 + 0.918216i
0.0581448 − 0.998308i
0.835488 + 0.549509i
0.686242 − 0.727374i
−0.396080 − 0.918216i
−0.973045 + 0.230616i
−0.893633 − 0.448799i
−0.893633 + 0.448799i
0 −0.286803 + 0.957990i 0 0 0 −1.22650 − 0.615969i 0 −0.835488 − 0.549509i 0
89.1 0 −0.0581448 − 0.998308i 0 0 0 0.707900 + 1.64110i 0 −0.993238 + 0.116093i 0
221.1 0 −0.993238 − 0.116093i 0 0 0 −0.819590 − 0.868715i 0 0.973045 + 0.230616i 0
233.1 0 0.396080 − 0.918216i 0 0 0 0.569728 + 1.90302i 0 −0.686242 − 0.727374i 0
353.1 0 0.597159 − 0.802123i 0 0 0 0.770807 − 0.182685i 0 −0.286803 − 0.957990i 0
461.1 0 −0.835488 − 0.549509i 0 0 0 −0.0694434 − 0.0932786i 0 0.396080 + 0.918216i 0
485.1 0 −0.0581448 + 0.998308i 0 0 0 0.707900 − 1.64110i 0 −0.993238 − 0.116093i 0
509.1 0 −0.993238 + 0.116093i 0 0 0 −0.819590 + 0.868715i 0 0.973045 − 0.230616i 0
533.1 0 0.973045 − 0.230616i 0 0 0 0.0333522 + 0.572636i 0 0.893633 − 0.448799i 0
593.1 0 −0.835488 + 0.549509i 0 0 0 −0.0694434 + 0.0932786i 0 0.396080 − 0.918216i 0
689.1 0 0.893633 − 0.448799i 0 0 0 1.65968 − 0.193988i 0 0.597159 − 0.802123i 0
785.1 0 −0.286803 − 0.957990i 0 0 0 −1.22650 + 0.615969i 0 −0.835488 + 0.549509i 0
881.1 0 0.973045 + 0.230616i 0 0 0 0.0333522 − 0.572636i 0 0.893633 + 0.448799i 0
893.1 0 0.597159 + 0.802123i 0 0 0 0.770807 + 0.182685i 0 −0.286803 + 0.957990i 0
953.1 0 0.893633 + 0.448799i 0 0 0 1.65968 + 0.193988i 0 0.597159 + 0.802123i 0
1061.1 0 0.396080 + 0.918216i 0 0 0 0.569728 − 1.90302i 0 −0.686242 + 0.727374i 0
1097.1 0 −0.686242 − 0.727374i 0 0 0 −1.62593 + 1.06939i 0 −0.0581448 + 0.998308i 0
1277.1 0 −0.686242 + 0.727374i 0 0 0 −1.62593 − 1.06939i 0 −0.0581448 − 0.998308i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 5.1
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 CM by \(\Q(\sqrt{-3}) \)
109.i even 27 1 inner
327.v odd 54 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1308.1.br.a ✓ 18
3.b odd 2 1 CM 1308.1.br.a ✓ 18
109.i even 27 1 inner 1308.1.br.a ✓ 18
327.v odd 54 1 inner 1308.1.br.a ✓ 18
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1308.1.br.a ✓ 18 1.a even 1 1 trivial
1308.1.br.a ✓ 18 3.b odd 2 1 CM
1308.1.br.a ✓ 18 109.i even 27 1 inner
1308.1.br.a ✓ 18 327.v odd 54 1 inner

Hecke kernels

This newform subspace is the entire newspace \(S_{1}^{\mathrm{new}}(1308, [\chi])\).

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{18} \) Copy content Toggle raw display
$3$ \( T^{18} + T^{9} + 1 \) Copy content Toggle raw display
$5$ \( T^{18} \) Copy content Toggle raw display
$7$ \( T^{18} + 3 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$11$ \( T^{18} \) Copy content Toggle raw display
$13$ \( T^{18} + 9 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$17$ \( T^{18} \) Copy content Toggle raw display
$19$ \( T^{18} + 9 T^{13} + \cdots + 1 \) Copy content Toggle raw display
$23$ \( T^{18} \) Copy content Toggle raw display
$29$ \( T^{18} \) Copy content Toggle raw display
$31$ \( T^{18} + 9 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$37$ \( T^{18} + 9 T^{17} + \cdots + 1 \) Copy content Toggle raw display
$41$ \( T^{18} \) Copy content Toggle raw display
$43$ \( T^{18} + 9 T^{13} + \cdots + 1 \) Copy content Toggle raw display
$47$ \( T^{18} \) Copy content Toggle raw display
$53$ \( T^{18} \) Copy content Toggle raw display
$59$ \( T^{18} \) Copy content Toggle raw display
$61$ \( T^{18} + 3 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$67$ \( T^{18} - T^{9} + 1 \) Copy content Toggle raw display
$71$ \( T^{18} \) Copy content Toggle raw display
$73$ \( T^{18} + 3 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$79$ \( T^{18} + 3 T^{15} + \cdots + 1 \) Copy content Toggle raw display
$83$ \( T^{18} \) Copy content Toggle raw display
$89$ \( T^{18} \) Copy content Toggle raw display
$97$ \( T^{18} - 18 T^{15} + \cdots + 1 \) Copy content Toggle raw display
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