Properties

Label 2280.1.t.j
Level $2280$
Weight $1$
Character orbit 2280.t
Analytic conductor $1.138$
Analytic rank $0$
Dimension $4$
Projective image $D_{4}$
CM discriminant -95
Inner twists $8$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [2280,1,Mod(1139,2280)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2280, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 1, 1, 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("2280.1139");
 
S:= CuspForms(chi, 1);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2280 = 2^{3} \cdot 3 \cdot 5 \cdot 19 \)
Weight: \( k \) \(=\) \( 1 \)
Character orbit: \([\chi]\) \(=\) 2280.t (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: \(1.13786822880\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{8})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, a_2]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Projective image: \(D_{4}\)
Projective field: Galois closure of 4.0.1039680.3

$q$-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.

\(f(q)\) \(=\) \( q + \zeta_{8} q^{2} - \zeta_{8} q^{3} + \zeta_{8}^{2} q^{4} + q^{5} - \zeta_{8}^{2} q^{6} + \zeta_{8}^{3} q^{8} + \zeta_{8}^{2} q^{9} +O(q^{10}) \) Copy content Toggle raw display \( q + \zeta_{8} q^{2} - \zeta_{8} q^{3} + \zeta_{8}^{2} q^{4} + q^{5} - \zeta_{8}^{2} q^{6} + \zeta_{8}^{3} q^{8} + \zeta_{8}^{2} q^{9} + \zeta_{8} q^{10} - \zeta_{8}^{2} q^{11} - \zeta_{8}^{3} q^{12} + ( - \zeta_{8}^{3} - \zeta_{8}) q^{13} - \zeta_{8} q^{15} - q^{16} + \zeta_{8}^{3} q^{18} + q^{19} + \zeta_{8}^{2} q^{20} - 2 \zeta_{8}^{3} q^{22} + q^{24} + q^{25} + ( - \zeta_{8}^{2} + 1) q^{26} - \zeta_{8}^{3} q^{27} - \zeta_{8}^{2} q^{30} - \zeta_{8} q^{32} + 2 \zeta_{8}^{3} q^{33} - q^{36} + (\zeta_{8}^{3} + \zeta_{8}) q^{37} + \zeta_{8} q^{38} + (\zeta_{8}^{2} - 1) q^{39} + \zeta_{8}^{3} q^{40} + 2 q^{44} + \zeta_{8}^{2} q^{45} + \zeta_{8} q^{48} - q^{49} + \zeta_{8} q^{50} + ( - \zeta_{8}^{3} + \zeta_{8}) q^{52} + ( - \zeta_{8}^{3} + \zeta_{8}) q^{53} + q^{54} - 2 \zeta_{8}^{2} q^{55} - \zeta_{8} q^{57} - \zeta_{8}^{3} q^{60} + \zeta_{8}^{2} q^{61} - \zeta_{8}^{2} q^{64} + ( - \zeta_{8}^{3} - \zeta_{8}) q^{65} - 2 q^{66} + (\zeta_{8}^{3} - \zeta_{8}) q^{67} - \zeta_{8} q^{72} + (\zeta_{8}^{2} - 1) q^{74} - \zeta_{8} q^{75} + \zeta_{8}^{2} q^{76} + (\zeta_{8}^{3} - \zeta_{8}) q^{78} - q^{80} - q^{81} + 2 \zeta_{8} q^{88} + \zeta_{8}^{3} q^{90} + q^{95} + \zeta_{8}^{2} q^{96} + ( - \zeta_{8}^{3} + \zeta_{8}) q^{97} - \zeta_{8} q^{98} + 2 q^{99} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 4 q^{5}+O(q^{10}) \) Copy content Toggle raw display \( 4 q + 4 q^{5} - 4 q^{16} + 4 q^{19} + 4 q^{24} + 4 q^{25} + 4 q^{26} - 4 q^{36} - 4 q^{39} + 8 q^{44} - 4 q^{49} + 4 q^{54} - 8 q^{66} - 4 q^{74} - 4 q^{80} - 4 q^{81} + 4 q^{95} + 8 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Character values

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

\(n\) \(457\) \(761\) \(1141\) \(1711\) \(1921\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1139.1
−0.707107 0.707107i
−0.707107 + 0.707107i
0.707107 0.707107i
0.707107 + 0.707107i
−0.707107 0.707107i 0.707107 + 0.707107i 1.00000i 1.00000 1.00000i 0 0.707107 0.707107i 1.00000i −0.707107 0.707107i
1139.2 −0.707107 + 0.707107i 0.707107 0.707107i 1.00000i 1.00000 1.00000i 0 0.707107 + 0.707107i 1.00000i −0.707107 + 0.707107i
1139.3 0.707107 0.707107i −0.707107 + 0.707107i 1.00000i 1.00000 1.00000i 0 −0.707107 0.707107i 1.00000i 0.707107 0.707107i
1139.4 0.707107 + 0.707107i −0.707107 0.707107i 1.00000i 1.00000 1.00000i 0 −0.707107 + 0.707107i 1.00000i 0.707107 + 0.707107i
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
95.d odd 2 1 CM by \(\Q(\sqrt{-95}) \)
5.b even 2 1 inner
19.b odd 2 1 inner
24.f even 2 1 inner
120.m even 2 1 inner
456.l odd 2 1 inner
2280.t odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2280.1.t.j yes 4
3.b odd 2 1 2280.1.t.i 4
5.b even 2 1 inner 2280.1.t.j yes 4
8.d odd 2 1 2280.1.t.i 4
15.d odd 2 1 2280.1.t.i 4
19.b odd 2 1 inner 2280.1.t.j yes 4
24.f even 2 1 inner 2280.1.t.j yes 4
40.e odd 2 1 2280.1.t.i 4
57.d even 2 1 2280.1.t.i 4
95.d odd 2 1 CM 2280.1.t.j yes 4
120.m even 2 1 inner 2280.1.t.j yes 4
152.b even 2 1 2280.1.t.i 4
285.b even 2 1 2280.1.t.i 4
456.l odd 2 1 inner 2280.1.t.j yes 4
760.p even 2 1 2280.1.t.i 4
2280.t odd 2 1 inner 2280.1.t.j yes 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2280.1.t.i 4 3.b odd 2 1
2280.1.t.i 4 8.d odd 2 1
2280.1.t.i 4 15.d odd 2 1
2280.1.t.i 4 40.e odd 2 1
2280.1.t.i 4 57.d even 2 1
2280.1.t.i 4 152.b even 2 1
2280.1.t.i 4 285.b even 2 1
2280.1.t.i 4 760.p even 2 1
2280.1.t.j yes 4 1.a even 1 1 trivial
2280.1.t.j yes 4 5.b even 2 1 inner
2280.1.t.j yes 4 19.b odd 2 1 inner
2280.1.t.j yes 4 24.f even 2 1 inner
2280.1.t.j yes 4 95.d odd 2 1 CM
2280.1.t.j yes 4 120.m even 2 1 inner
2280.1.t.j yes 4 456.l odd 2 1 inner
2280.1.t.j yes 4 2280.t 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 \(S_{1}^{\mathrm{new}}(2280, [\chi])\):

\( T_{11}^{2} + 4 \) Copy content Toggle raw display
\( T_{13}^{2} + 2 \) Copy content Toggle raw display
\( T_{23} \) Copy content Toggle raw display
\( T_{31} \) Copy content Toggle raw display
\( T_{53}^{2} - 2 \) Copy content Toggle raw display
\( T_{67}^{2} - 2 \) Copy content Toggle raw display
\( T_{101} \) Copy content Toggle raw display
\( T_{191} + 2 \) Copy content Toggle raw display

Hecke characteristic polynomials

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