Properties

Label 2280.2.bg.l
Level $2280$
Weight $2$
Character orbit 2280.bg
Analytic conductor $18.206$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2280,2,Mod(121,2280)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2280, base_ring=CyclotomicField(6))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 0, 2]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2280.121");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2280 = 2^{3} \cdot 3 \cdot 5 \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2280.bg (of order \(3\), 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: \(18.2058916609\)
Analytic rank: \(0\)
Dimension: \(4\)
Relative dimension: \(2\) over \(\Q(\zeta_{3})\)
Coefficient field: \(\Q(\sqrt{-3}, \sqrt{17})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} + 5x^{2} + 4x + 16 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

$q$-expansion

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

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_{2} - 1) q^{3} + (\beta_{2} - 1) q^{5} + (2 \beta_{3} + 1) q^{7} - \beta_{2} q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + (\beta_{2} - 1) q^{3} + (\beta_{2} - 1) q^{5} + (2 \beta_{3} + 1) q^{7} - \beta_{2} q^{9} - \beta_{3} q^{11} + ( - \beta_{2} - \beta_1) q^{13} - \beta_{2} q^{15} + (4 \beta_{2} - 4) q^{17} + ( - 2 \beta_{3} - 2 \beta_{2} + \cdots - 1) q^{19}+ \cdots - \beta_1 q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 2 q^{3} - 2 q^{5} - 2 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 2 q^{3} - 2 q^{5} - 2 q^{9} + 2 q^{11} - 3 q^{13} - 2 q^{15} - 8 q^{17} - 5 q^{19} + 3 q^{23} - 2 q^{25} + 4 q^{27} + 6 q^{29} + 10 q^{31} - q^{33} - 36 q^{37} + 6 q^{39} + 5 q^{41} + 11 q^{43} + 4 q^{45} + 18 q^{47} + 40 q^{49} - 8 q^{51} + 19 q^{53} - q^{55} + 10 q^{57} - 4 q^{59} - 3 q^{61} + 6 q^{65} + 13 q^{67} - 6 q^{69} + 8 q^{71} + 9 q^{73} + 4 q^{75} - 34 q^{77} - 11 q^{79} - 2 q^{81} + 28 q^{83} - 8 q^{85} - 12 q^{87} + 11 q^{89} + 17 q^{91} - 5 q^{93} + 10 q^{95} + 12 q^{97} - q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - x^{3} + 5x^{2} + 4x + 16 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{3} + 5\nu^{2} - 5\nu + 16 ) / 20 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} + 4 ) / 5 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{3} + 4\beta_{2} + \beta _1 - 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 5\beta_{3} - 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2280\mathbb{Z}\right)^\times\).

\(n\) \(457\) \(761\) \(1141\) \(1711\) \(1921\)
\(\chi(n)\) \(1\) \(1\) \(1\) \(1\) \(-\beta_{2}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
121.1
1.28078 2.21837i
−0.780776 + 1.35234i
1.28078 + 2.21837i
−0.780776 1.35234i
0 −0.500000 0.866025i 0 −0.500000 0.866025i 0 −4.12311 0 −0.500000 + 0.866025i 0
121.2 0 −0.500000 0.866025i 0 −0.500000 0.866025i 0 4.12311 0 −0.500000 + 0.866025i 0
961.1 0 −0.500000 + 0.866025i 0 −0.500000 + 0.866025i 0 −4.12311 0 −0.500000 0.866025i 0
961.2 0 −0.500000 + 0.866025i 0 −0.500000 + 0.866025i 0 4.12311 0 −0.500000 0.866025i 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
19.c even 3 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2280.2.bg.l 4
19.c even 3 1 inner 2280.2.bg.l 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2280.2.bg.l 4 1.a even 1 1 trivial
2280.2.bg.l 4 19.c even 3 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(2280, [\chi])\):

\( T_{7}^{2} - 17 \) Copy content Toggle raw display
\( T_{11}^{2} - T_{11} - 4 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( (T^{2} + T + 1)^{2} \) Copy content Toggle raw display
$5$ \( (T^{2} + T + 1)^{2} \) Copy content Toggle raw display
$7$ \( (T^{2} - 17)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} - T - 4)^{2} \) Copy content Toggle raw display
$13$ \( T^{4} + 3 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$17$ \( (T^{2} + 4 T + 16)^{2} \) Copy content Toggle raw display
$19$ \( T^{4} + 5 T^{3} + \cdots + 361 \) Copy content Toggle raw display
$23$ \( T^{4} - 3 T^{3} + \cdots + 4 \) Copy content Toggle raw display
$29$ \( T^{4} - 6 T^{3} + \cdots + 64 \) Copy content Toggle raw display
$31$ \( (T^{2} - 5 T - 32)^{2} \) Copy content Toggle raw display
$37$ \( (T + 9)^{4} \) Copy content Toggle raw display
$41$ \( T^{4} - 5 T^{3} + \cdots + 1024 \) Copy content Toggle raw display
$43$ \( T^{4} - 11 T^{3} + \cdots + 676 \) Copy content Toggle raw display
$47$ \( T^{4} - 18 T^{3} + \cdots + 4096 \) Copy content Toggle raw display
$53$ \( T^{4} - 19 T^{3} + \cdots + 7396 \) Copy content Toggle raw display
$59$ \( T^{4} + 4 T^{3} + \cdots + 4096 \) Copy content Toggle raw display
$61$ \( T^{4} + 3 T^{3} + \cdots + 1296 \) Copy content Toggle raw display
$67$ \( T^{4} - 13 T^{3} + \cdots + 16 \) Copy content Toggle raw display
$71$ \( T^{4} - 8 T^{3} + \cdots + 2704 \) Copy content Toggle raw display
$73$ \( T^{4} - 9 T^{3} + \cdots + 324 \) Copy content Toggle raw display
$79$ \( T^{4} + 11 T^{3} + \cdots + 676 \) Copy content Toggle raw display
$83$ \( (T^{2} - 14 T + 32)^{2} \) Copy content Toggle raw display
$89$ \( T^{4} - 11 T^{3} + \cdots + 64 \) Copy content Toggle raw display
$97$ \( (T^{2} - 6 T + 36)^{2} \) Copy content Toggle raw display
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