Properties

Label 1560.2.g.f
Level $1560$
Weight $2$
Character orbit 1560.g
Analytic conductor $12.457$
Analytic rank $0$
Dimension $4$
Inner twists $2$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [1560,2,Mod(961,1560)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma://Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("1560.961"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(1560, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0, 0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 1560 = 2^{3} \cdot 3 \cdot 5 \cdot 13 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1560.g (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,-4,0,0,0,0,0,4,0,0,0,8,0,0,0,14] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(17)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(12.4566627153\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(i, \sqrt{41})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 21x^{2} + 100 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{7}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content 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.

\(f(q)\) \(=\) \( q - q^{3} - \beta_{2} q^{5} + ( - \beta_{2} + \beta_1) q^{7} + q^{9} + ( - \beta_{2} - \beta_1) q^{11} + (3 \beta_{2} + 2) q^{13} + \beta_{2} q^{15} + ( - \beta_{3} + 4) q^{17} - 2 \beta_1 q^{19} + (\beta_{2} - \beta_1) q^{21}+ \cdots + ( - \beta_{2} - \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{3} + 4 q^{9} + 8 q^{13} + 14 q^{17} - 2 q^{23} - 4 q^{25} - 4 q^{27} + 8 q^{29} - 6 q^{35} - 8 q^{39} + 20 q^{43} - 22 q^{49} - 14 q^{51} + 22 q^{53} - 2 q^{55} + 14 q^{61} + 12 q^{65} + 2 q^{69}+ \cdots + 4 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 21x^{2} + 100 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{3} + 11\nu ) / 10 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \nu^{2} + 11 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{3} - 11 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 10\beta_{2} - 11\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1560\mathbb{Z}\right)^\times\).

\(n\) \(391\) \(521\) \(781\) \(937\) \(1081\)
\(\chi(n)\) \(1\) \(1\) \(1\) \(1\) \(-1\)

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.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
961.1
3.70156i
2.70156i
2.70156i
3.70156i
0 −1.00000 0 1.00000i 0 4.70156i 0 1.00000 0
961.2 0 −1.00000 0 1.00000i 0 1.70156i 0 1.00000 0
961.3 0 −1.00000 0 1.00000i 0 1.70156i 0 1.00000 0
961.4 0 −1.00000 0 1.00000i 0 4.70156i 0 1.00000 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
13.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1560.2.g.f 4
3.b odd 2 1 4680.2.g.h 4
4.b odd 2 1 3120.2.g.r 4
13.b even 2 1 inner 1560.2.g.f 4
39.d odd 2 1 4680.2.g.h 4
52.b odd 2 1 3120.2.g.r 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1560.2.g.f 4 1.a even 1 1 trivial
1560.2.g.f 4 13.b even 2 1 inner
3120.2.g.r 4 4.b odd 2 1
3120.2.g.r 4 52.b odd 2 1
4680.2.g.h 4 3.b odd 2 1
4680.2.g.h 4 39.d odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1560, [\chi])\):

\( T_{7}^{4} + 25T_{7}^{2} + 64 \) Copy content Toggle raw display
\( T_{11}^{4} + 21T_{11}^{2} + 100 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( (T + 1)^{4} \) Copy content Toggle raw display
$5$ \( (T^{2} + 1)^{2} \) Copy content Toggle raw display
$7$ \( T^{4} + 25T^{2} + 64 \) Copy content Toggle raw display
$11$ \( T^{4} + 21T^{2} + 100 \) Copy content Toggle raw display
$13$ \( (T^{2} - 4 T + 13)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} - 7 T + 2)^{2} \) Copy content Toggle raw display
$19$ \( T^{4} + 84T^{2} + 1600 \) Copy content Toggle raw display
$23$ \( (T^{2} + T - 10)^{2} \) Copy content Toggle raw display
$29$ \( (T - 2)^{4} \) Copy content Toggle raw display
$31$ \( T^{4} + 100T^{2} + 1024 \) Copy content Toggle raw display
$37$ \( T^{4} + 21T^{2} + 100 \) Copy content Toggle raw display
$41$ \( T^{4} + 81T^{2} + 400 \) Copy content Toggle raw display
$43$ \( (T^{2} - 10 T - 16)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} + 64)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} - 11 T + 20)^{2} \) Copy content Toggle raw display
$59$ \( T^{4} + 180T^{2} + 64 \) Copy content Toggle raw display
$61$ \( (T^{2} - 7 T + 2)^{2} \) Copy content Toggle raw display
$67$ \( (T^{2} + 64)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + 33T^{2} + 16 \) Copy content Toggle raw display
$73$ \( (T^{2} + 164)^{2} \) Copy content Toggle raw display
$79$ \( (T^{2} + 13 T + 32)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + 100T^{2} + 1024 \) Copy content Toggle raw display
$89$ \( T^{4} + 25T^{2} + 64 \) Copy content Toggle raw display
$97$ \( T^{4} + 269T^{2} + 2500 \) Copy content Toggle raw display
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