Properties

Label 500.2.c.a
Level $500$
Weight $2$
Character orbit 500.c
Analytic conductor $3.993$
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] = [500,2,Mod(249,500)] 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("500.249"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(500, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 500 = 2^{2} \cdot 5^{3} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 500.c (of order \(2\), degree \(1\), not minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,0,0,0,0,0,0,0,-14] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(9)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(3.99252010106\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\sqrt{-6 + \sqrt{5}})\)
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 12x^{2} + 31 \) 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.

\(f(q)\) \(=\) \( q - \beta_{3} q^{3} + (\beta_{3} - \beta_1) q^{7} + ( - 3 \beta_{2} - 2) q^{9} + ( - 4 \beta_{2} + 2) q^{11} - 2 \beta_1 q^{13} - 2 \beta_{3} q^{17} - 2 \beta_{2} q^{19} + ( - 2 \beta_{2} + 7) q^{21} + (\beta_{3} + \beta_1) q^{23}+ \cdots + (14 \beta_{2} + 8) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 14 q^{9} - 4 q^{19} + 24 q^{21} - 14 q^{29} + 24 q^{31} - 4 q^{39} - 6 q^{41} - 18 q^{49} - 52 q^{51} + 32 q^{59} + 18 q^{61} + 28 q^{69} + 12 q^{71} - 12 q^{79} + 16 q^{81} + 14 q^{89} - 44 q^{91}+ \cdots + 60 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} + 12x^{2} + 31 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{2} + 7 ) / 2 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{3} + 7\nu ) / 2 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 2\beta_{2} - 7 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 2\beta_{3} - 7\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/500\mathbb{Z}\right)^\times\).

\(n\) \(251\) \(377\)
\(\chi(n)\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
249.1
1.94009i
2.86986i
2.86986i
1.94009i
0 3.13912i 0 0 0 1.19904i 0 −6.85410 0
249.2 0 1.77367i 0 0 0 4.64352i 0 −0.145898 0
249.3 0 1.77367i 0 0 0 4.64352i 0 −0.145898 0
249.4 0 3.13912i 0 0 0 1.19904i 0 −6.85410 0
\(n\): e.g. 2-40 or 80-90
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 500.2.c.a 4
3.b odd 2 1 4500.2.d.e 4
4.b odd 2 1 2000.2.c.a 4
5.b even 2 1 inner 500.2.c.a 4
5.c odd 4 2 500.2.a.c 4
15.d odd 2 1 4500.2.d.e 4
15.e even 4 2 4500.2.a.q 4
20.d odd 2 1 2000.2.c.a 4
20.e even 4 2 2000.2.a.p 4
40.i odd 4 2 8000.2.a.bl 4
40.k even 4 2 8000.2.a.bm 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
500.2.a.c 4 5.c odd 4 2
500.2.c.a 4 1.a even 1 1 trivial
500.2.c.a 4 5.b even 2 1 inner
2000.2.a.p 4 20.e even 4 2
2000.2.c.a 4 4.b odd 2 1
2000.2.c.a 4 20.d odd 2 1
4500.2.a.q 4 15.e even 4 2
4500.2.d.e 4 3.b odd 2 1
4500.2.d.e 4 15.d odd 2 1
8000.2.a.bl 4 40.i odd 4 2
8000.2.a.bm 4 40.k even 4 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{4} + 13T_{3}^{2} + 31 \) acting on \(S_{2}^{\mathrm{new}}(500, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 13T^{2} + 31 \) Copy content Toggle raw display
$5$ \( T^{4} \) Copy content Toggle raw display
$7$ \( T^{4} + 23T^{2} + 31 \) Copy content Toggle raw display
$11$ \( (T^{2} - 20)^{2} \) Copy content Toggle raw display
$13$ \( T^{4} + 48T^{2} + 496 \) Copy content Toggle raw display
$17$ \( T^{4} + 52T^{2} + 496 \) Copy content Toggle raw display
$19$ \( (T^{2} + 2 T - 4)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} + 27T^{2} + 31 \) Copy content Toggle raw display
$29$ \( (T^{2} + 7 T + 11)^{2} \) Copy content Toggle raw display
$31$ \( (T - 6)^{4} \) Copy content Toggle raw display
$37$ \( T^{4} + 108T^{2} + 496 \) Copy content Toggle raw display
$41$ \( (T^{2} + 3 T + 1)^{2} \) Copy content Toggle raw display
$43$ \( T^{4} + 65T^{2} + 775 \) Copy content Toggle raw display
$47$ \( T^{4} + 57T^{2} + 31 \) Copy content Toggle raw display
$53$ \( T^{4} + 192T^{2} + 7936 \) Copy content Toggle raw display
$59$ \( (T^{2} - 16 T + 44)^{2} \) Copy content Toggle raw display
$61$ \( (T^{2} - 9 T + 9)^{2} \) Copy content Toggle raw display
$67$ \( T^{4} + 108T^{2} + 496 \) Copy content Toggle raw display
$71$ \( (T^{2} - 6 T + 4)^{2} \) Copy content Toggle raw display
$73$ \( T^{4} + 48T^{2} + 496 \) Copy content Toggle raw display
$79$ \( (T^{2} + 6 T - 36)^{2} \) Copy content Toggle raw display
$83$ \( T^{4} + 127T^{2} + 3751 \) Copy content Toggle raw display
$89$ \( (T^{2} - 7 T - 49)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 48T^{2} + 496 \) Copy content Toggle raw display
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