Properties

Label 2160.2.f.d
Level $2160$
Weight $2$
Character orbit 2160.f
Analytic conductor $17.248$
Analytic rank $0$
Dimension $2$
Inner twists $2$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [2160,2,Mod(1729,2160)] 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("2160.1729"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(2160, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 2160 = 2^{4} \cdot 3^{3} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2160.f (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [2,0,0,0,-2,0,0,0,0,0,10,0,0,0,0,0,0,0,-12] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(19)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(17.2476868366\)
Analytic rank: \(0\)
Dimension: \(2\)
Coefficient field: \(\Q(\sqrt{-1}) \)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 270)
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 \(i = \sqrt{-1}\). We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - 2 i - 1) q^{5} + 4 i q^{7} + 5 q^{11} - 3 i q^{13} + i q^{17} - 6 q^{19} + i q^{23} + (4 i - 3) q^{25} + 9 q^{29} + 5 q^{31} + ( - 4 i + 8) q^{35} + 2 i q^{37} - 2 q^{41} - i q^{43} + 13 i q^{47} + \cdots + 10 i q^{97} +O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 2 q - 2 q^{5} + 10 q^{11} - 12 q^{19} - 6 q^{25} + 18 q^{29} + 10 q^{31} + 16 q^{35} - 4 q^{41} - 18 q^{49} - 10 q^{55} - 8 q^{59} + 16 q^{61} - 12 q^{65} + 12 q^{71} + 18 q^{79} + 4 q^{85} + 28 q^{89}+ \cdots + 12 q^{95}+O(q^{100}) \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2160\mathbb{Z}\right)^\times\).

\(n\) \(271\) \(1297\) \(1621\) \(2081\)
\(\chi(n)\) \(1\) \(-1\) \(1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1729.1
1.00000i
1.00000i
0 0 0 −1.00000 2.00000i 0 4.00000i 0 0 0
1729.2 0 0 0 −1.00000 + 2.00000i 0 4.00000i 0 0 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
5.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2160.2.f.d 2
3.b odd 2 1 2160.2.f.e 2
4.b odd 2 1 270.2.c.a 2
5.b even 2 1 inner 2160.2.f.d 2
12.b even 2 1 270.2.c.b yes 2
15.d odd 2 1 2160.2.f.e 2
20.d odd 2 1 270.2.c.a 2
20.e even 4 1 1350.2.a.j 1
20.e even 4 1 1350.2.a.l 1
36.f odd 6 2 810.2.i.d 4
36.h even 6 2 810.2.i.c 4
60.h even 2 1 270.2.c.b yes 2
60.l odd 4 1 1350.2.a.b 1
60.l odd 4 1 1350.2.a.v 1
180.n even 6 2 810.2.i.c 4
180.p odd 6 2 810.2.i.d 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
270.2.c.a 2 4.b odd 2 1
270.2.c.a 2 20.d odd 2 1
270.2.c.b yes 2 12.b even 2 1
270.2.c.b yes 2 60.h even 2 1
810.2.i.c 4 36.h even 6 2
810.2.i.c 4 180.n even 6 2
810.2.i.d 4 36.f odd 6 2
810.2.i.d 4 180.p odd 6 2
1350.2.a.b 1 60.l odd 4 1
1350.2.a.j 1 20.e even 4 1
1350.2.a.l 1 20.e even 4 1
1350.2.a.v 1 60.l odd 4 1
2160.2.f.d 2 1.a even 1 1 trivial
2160.2.f.d 2 5.b even 2 1 inner
2160.2.f.e 2 3.b odd 2 1
2160.2.f.e 2 15.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 \(S_{2}^{\mathrm{new}}(2160, [\chi])\):

\( T_{7}^{2} + 16 \) Copy content Toggle raw display
\( T_{11} - 5 \) Copy content Toggle raw display
\( T_{13}^{2} + 9 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{2} \) Copy content Toggle raw display
$3$ \( T^{2} \) Copy content Toggle raw display
$5$ \( T^{2} + 2T + 5 \) Copy content Toggle raw display
$7$ \( T^{2} + 16 \) Copy content Toggle raw display
$11$ \( (T - 5)^{2} \) Copy content Toggle raw display
$13$ \( T^{2} + 9 \) Copy content Toggle raw display
$17$ \( T^{2} + 1 \) Copy content Toggle raw display
$19$ \( (T + 6)^{2} \) Copy content Toggle raw display
$23$ \( T^{2} + 1 \) Copy content Toggle raw display
$29$ \( (T - 9)^{2} \) Copy content Toggle raw display
$31$ \( (T - 5)^{2} \) Copy content Toggle raw display
$37$ \( T^{2} + 4 \) Copy content Toggle raw display
$41$ \( (T + 2)^{2} \) Copy content Toggle raw display
$43$ \( T^{2} + 1 \) Copy content Toggle raw display
$47$ \( T^{2} + 169 \) Copy content Toggle raw display
$53$ \( T^{2} \) Copy content Toggle raw display
$59$ \( (T + 4)^{2} \) Copy content Toggle raw display
$61$ \( (T - 8)^{2} \) Copy content Toggle raw display
$67$ \( T^{2} + 16 \) Copy content Toggle raw display
$71$ \( (T - 6)^{2} \) Copy content Toggle raw display
$73$ \( T^{2} + 4 \) Copy content Toggle raw display
$79$ \( (T - 9)^{2} \) Copy content Toggle raw display
$83$ \( T^{2} + 16 \) Copy content Toggle raw display
$89$ \( (T - 14)^{2} \) Copy content Toggle raw display
$97$ \( T^{2} + 100 \) Copy content Toggle raw display
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