Properties

Label 1027.1.s.b
Level $1027$
Weight $1$
Character orbit 1027.s
Analytic conductor $0.513$
Analytic rank $0$
Dimension $8$
Projective image $D_{30}$
CM discriminant -79
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1027,1,Mod(394,1027)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1027, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([1, 3]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1027.394");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1027 = 13 \cdot 79 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 1027.s (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: \(0.512539767974\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: \(\Q(\zeta_{15})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - x^{7} + x^{5} - x^{4} + x^{3} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{4}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{30}\)
Projective field: Galois closure of \(\mathbb{Q}[x]/(x^{30} - \cdots)\)

$q$-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.

\(f(q)\) \(=\) \( q + (\zeta_{30}^{12} - \zeta_{30}^{8}) q^{2} + ( - \zeta_{30}^{9} + \zeta_{30}^{5} - \zeta_{30}) q^{4} + ( - \zeta_{30}^{11} - \zeta_{30}^{4}) q^{5} + ( - \zeta_{30}^{13} + \cdots + \zeta_{30}^{2}) q^{8}+ \cdots - \zeta_{30}^{5} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + (\zeta_{30}^{12} - \zeta_{30}^{8}) q^{2} + ( - \zeta_{30}^{9} + \zeta_{30}^{5} - \zeta_{30}) q^{4} + ( - \zeta_{30}^{11} - \zeta_{30}^{4}) q^{5} + ( - \zeta_{30}^{13} + \cdots + \zeta_{30}^{2}) q^{8}+ \cdots + (\zeta_{30}^{8} + \zeta_{30}^{7}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 3 q^{2} + 3 q^{4} - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 3 q^{2} + 3 q^{4} - 4 q^{9} - 3 q^{10} - 3 q^{11} + 2 q^{13} - 4 q^{16} + 3 q^{19} - 6 q^{20} + 2 q^{22} + q^{23} - 6 q^{25} - 7 q^{26} + 15 q^{32} + 3 q^{36} + 6 q^{38} + 4 q^{40} + 3 q^{45} + 3 q^{46} + 4 q^{49} - 9 q^{50} + 2 q^{52} - 3 q^{55} - 7 q^{62} - 12 q^{64} - 3 q^{72} - 9 q^{76} - 8 q^{79} - 3 q^{80} - 4 q^{81} - 2 q^{88} + 6 q^{90} + 14 q^{92} + 2 q^{95} - 3 q^{97} - 3 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1027\mathbb{Z}\right)^\times\).

\(n\) \(80\) \(872\)
\(\chi(n)\) \(\zeta_{30}^{5}\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
394.1
0.669131 + 0.743145i
−0.978148 0.207912i
−0.104528 0.994522i
0.913545 0.406737i
0.669131 0.743145i
−0.978148 + 0.207912i
−0.104528 + 0.994522i
0.913545 + 0.406737i
−1.72256 0.994522i 0 1.47815 + 2.56023i 0.415823i 0 0 3.89116i −0.500000 0.866025i 0.413545 0.716282i
394.2 −0.704489 0.406737i 0 −0.169131 0.292943i 1.48629i 0 0 1.08864i −0.500000 0.866025i −0.604528 + 1.04707i
394.3 −0.360114 0.207912i 0 −0.413545 0.716282i 0.813473i 0 0 0.759747i −0.500000 0.866025i 0.169131 0.292943i
394.4 1.28716 + 0.743145i 0 0.604528 + 1.04707i 1.98904i 0 0 0.310719i −0.500000 0.866025i −1.47815 + 2.56023i
868.1 −1.72256 + 0.994522i 0 1.47815 2.56023i 0.415823i 0 0 3.89116i −0.500000 + 0.866025i 0.413545 + 0.716282i
868.2 −0.704489 + 0.406737i 0 −0.169131 + 0.292943i 1.48629i 0 0 1.08864i −0.500000 + 0.866025i −0.604528 1.04707i
868.3 −0.360114 + 0.207912i 0 −0.413545 + 0.716282i 0.813473i 0 0 0.759747i −0.500000 + 0.866025i 0.169131 + 0.292943i
868.4 1.28716 0.743145i 0 0.604528 1.04707i 1.98904i 0 0 0.310719i −0.500000 + 0.866025i −1.47815 2.56023i
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 394.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
79.b odd 2 1 CM by \(\Q(\sqrt{-79}) \)
13.e even 6 1 inner
1027.s odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1027.1.s.b 8
13.e even 6 1 inner 1027.1.s.b 8
79.b odd 2 1 CM 1027.1.s.b 8
1027.s odd 6 1 inner 1027.1.s.b 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1027.1.s.b 8 1.a even 1 1 trivial
1027.1.s.b 8 13.e even 6 1 inner
1027.1.s.b 8 79.b odd 2 1 CM
1027.1.s.b 8 1027.s odd 6 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{2}^{8} + 3T_{2}^{7} + T_{2}^{6} - 6T_{2}^{5} - T_{2}^{4} + 12T_{2}^{3} + 14T_{2}^{2} + 6T_{2} + 1 \) acting on \(S_{1}^{\mathrm{new}}(1027, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} + 3 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( T^{8} + 7 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( T^{8} + 3 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$13$ \( (T^{4} - T^{3} + T^{2} + \cdots + 1)^{2} \) Copy content Toggle raw display
$17$ \( T^{8} \) Copy content Toggle raw display
$19$ \( T^{8} - 3 T^{7} + \cdots + 1 \) Copy content Toggle raw display
$23$ \( T^{8} - T^{7} + 5 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$29$ \( T^{8} \) Copy content Toggle raw display
$31$ \( T^{8} + 7 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$37$ \( T^{8} \) Copy content Toggle raw display
$41$ \( T^{8} \) Copy content Toggle raw display
$43$ \( T^{8} \) Copy content Toggle raw display
$47$ \( T^{8} \) Copy content Toggle raw display
$53$ \( T^{8} \) Copy content Toggle raw display
$59$ \( T^{8} \) Copy content Toggle raw display
$61$ \( T^{8} \) Copy content Toggle raw display
$67$ \( T^{8} - 5 T^{6} + \cdots + 25 \) Copy content Toggle raw display
$71$ \( T^{8} \) Copy content Toggle raw display
$73$ \( T^{8} + 7 T^{6} + \cdots + 1 \) Copy content Toggle raw display
$79$ \( (T + 1)^{8} \) Copy content Toggle raw display
$83$ \( (T^{2} + 3)^{4} \) Copy content Toggle raw display
$89$ \( T^{8} - 5 T^{6} + \cdots + 25 \) Copy content Toggle raw display
$97$ \( T^{8} + 3 T^{7} + \cdots + 1 \) Copy content Toggle raw display
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