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Properties

Label 520.1.bx.b
Level $520$
Weight $1$
Character orbit 520.bx
Analytic conductor $0.260$
Analytic rank $0$
Dimension $2$
Projective image $D_{3}$
CM discriminant -40
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [520,1,Mod(139,520)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(520, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([3, 3, 3, 4]))
 
N = Newforms(chi, 1, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("520.139");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 520 = 2^{3} \cdot 5 \cdot 13 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 520.bx (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: \(0.259513806569\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\zeta_{6})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} - x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{3}\)
Projective field: Galois closure of 3.1.6760.1
Artin image: $C_6\times S_3$
Artin field: Galois closure of \(\mathbb{Q}[x]/(x^{12} - \cdots)\)

$q$-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.

\(f(q)\) \(=\) \( q + \zeta_{6} q^{2} + \zeta_{6}^{2} q^{4} - q^{5} + \zeta_{6}^{2} q^{7} - q^{8} + \zeta_{6}^{2} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{6} q^{2} + \zeta_{6}^{2} q^{4} - q^{5} + \zeta_{6}^{2} q^{7} - q^{8} + \zeta_{6}^{2} q^{9} - \zeta_{6} q^{10} + \zeta_{6} q^{11} - \zeta_{6}^{2} q^{13} - q^{14} - \zeta_{6} q^{16} - q^{18} - \zeta_{6}^{2} q^{19} - \zeta_{6}^{2} q^{20} + \zeta_{6}^{2} q^{22} + \zeta_{6} q^{23} + q^{25} + q^{26} - \zeta_{6} q^{28} - \zeta_{6}^{2} q^{32} - \zeta_{6}^{2} q^{35} - \zeta_{6} q^{36} - \zeta_{6} q^{37} + q^{38} + q^{40} - \zeta_{6} q^{41} - q^{44} - \zeta_{6}^{2} q^{45} + 2 \zeta_{6}^{2} q^{46} + q^{47} + \zeta_{6} q^{50} + \zeta_{6} q^{52} + q^{53} - \zeta_{6} q^{55} - \zeta_{6}^{2} q^{56} + \zeta_{6}^{2} q^{59} - \zeta_{6} q^{63} + q^{64} + \zeta_{6}^{2} q^{65} + q^{70} - \zeta_{6}^{2} q^{72} - \zeta_{6}^{2} q^{74} + \zeta_{6} q^{76} - q^{77} + \zeta_{6} q^{80} - \zeta_{6} q^{81} - 2 \zeta_{6}^{2} q^{82} - \zeta_{6} q^{88} + \zeta_{6} q^{89} + q^{90} + \zeta_{6} q^{91} - 2 q^{92} + \zeta_{6} q^{94} + \zeta_{6}^{2} q^{95} - q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q + q^{2} - q^{4} - 2 q^{5} - q^{7} - 2 q^{8} - q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 2 q + q^{2} - q^{4} - 2 q^{5} - q^{7} - 2 q^{8} - q^{9} - q^{10} + q^{11} + q^{13} - 2 q^{14} - q^{16} - 2 q^{18} + q^{19} + q^{20} - q^{22} + 2 q^{23} + 2 q^{25} + 2 q^{26} - q^{28} + q^{32} + q^{35} - q^{36} - q^{37} + 2 q^{38} + 2 q^{40} - 2 q^{41} - 2 q^{44} + q^{45} - 2 q^{46} + 2 q^{47} + q^{50} + q^{52} + 2 q^{53} - q^{55} + q^{56} - 2 q^{59} - q^{63} + 2 q^{64} - q^{65} + 2 q^{70} + q^{72} + q^{74} + q^{76} - 2 q^{77} + q^{80} - q^{81} + 2 q^{82} - q^{88} + q^{89} + 2 q^{90} + q^{91} - 4 q^{92} + q^{94} - q^{95} - 2 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Display 100 coefficients 10 coefficients

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/520\mathbb{Z}\right)^\times\).

\(n\) \(41\) \(261\) \(391\) \(417\)
\(\chi(n)\) \(\zeta_{6}^{2}\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
139.1
0.500000 − 0.866025i
0.500000 + 0.866025i
0.500000 − 0.866025i 0 −0.500000 − 0.866025i −1.00000 0 −0.500000 − 0.866025i −1.00000 −0.500000 − 0.866025i −0.500000 + 0.866025i
419.1 0.500000 + 0.866025i 0 −0.500000 + 0.866025i −1.00000 0 −0.500000 + 0.866025i −1.00000 −0.500000 + 0.866025i −0.500000 − 0.866025i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
40.e odd 2 1 CM by \(\Q(\sqrt{-10}) \)
13.c even 3 1 inner
520.bx odd 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 520.1.bx.b yes 2
4.b odd 2 1 2080.1.dd.a 2
5.b even 2 1 520.1.bx.a ✓ 2
5.c odd 4 2 2600.1.bt.a 4
8.b even 2 1 2080.1.dd.b 2
8.d odd 2 1 520.1.bx.a ✓ 2
13.c even 3 1 inner 520.1.bx.b yes 2
20.d odd 2 1 2080.1.dd.b 2
40.e odd 2 1 CM 520.1.bx.b yes 2
40.f even 2 1 2080.1.dd.a 2
40.k even 4 2 2600.1.bt.a 4
52.j odd 6 1 2080.1.dd.a 2
65.n even 6 1 520.1.bx.a ✓ 2
65.q odd 12 2 2600.1.bt.a 4
104.n odd 6 1 520.1.bx.a ✓ 2
104.r even 6 1 2080.1.dd.b 2
260.v odd 6 1 2080.1.dd.b 2
520.bv even 6 1 2080.1.dd.a 2
520.bx odd 6 1 inner 520.1.bx.b yes 2
520.cm even 12 2 2600.1.bt.a 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
520.1.bx.a ✓ 2 5.b even 2 1
520.1.bx.a ✓ 2 8.d odd 2 1
520.1.bx.a ✓ 2 65.n even 6 1
520.1.bx.a ✓ 2 104.n odd 6 1
520.1.bx.b yes 2 1.a even 1 1 trivial
520.1.bx.b yes 2 13.c even 3 1 inner
520.1.bx.b yes 2 40.e odd 2 1 CM
520.1.bx.b yes 2 520.bx odd 6 1 inner
2080.1.dd.a 2 4.b odd 2 1
2080.1.dd.a 2 40.f even 2 1
2080.1.dd.a 2 52.j odd 6 1
2080.1.dd.a 2 520.bv even 6 1
2080.1.dd.b 2 8.b even 2 1
2080.1.dd.b 2 20.d odd 2 1
2080.1.dd.b 2 104.r even 6 1
2080.1.dd.b 2 260.v odd 6 1
2600.1.bt.a 4 5.c odd 4 2
2600.1.bt.a 4 40.k even 4 2
2600.1.bt.a 4 65.q odd 12 2
2600.1.bt.a 4 520.cm even 12 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7}^{2} + T_{7} + 1 \) acting on \(S_{1}^{\mathrm{new}}(520, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

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