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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [2610,2,Mod(1,2610)] 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("2610.1"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(2610, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 2610 = 2 \cdot 3^{2} \cdot 5 \cdot 29 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 2610.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [4,4,0,4,4,0,0,4,0,4,0,0,2,0,0,4,8,0,6] 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: yes
Analytic conductor: \(20.8409549276\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: 4.4.27004.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{3} - 6x^{2} + 3x + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: yes
Fricke sign: \(-1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-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.

\(f(q)\) \(=\) \( q + q^{2} + q^{4} + q^{5} + \beta_{2} q^{7} + q^{8} + q^{10} + \beta_{2} q^{11} + \beta_{3} q^{13} + \beta_{2} q^{14} + q^{16} + (\beta_{3} - \beta_1 + 2) q^{17} + ( - \beta_{3} - \beta_{2} + 2) q^{19}+ \cdots + (\beta_{3} - 2 \beta_{2} + \beta_1 + 1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q + 4 q^{2} + 4 q^{4} + 4 q^{5} + 4 q^{8} + 4 q^{10} + 2 q^{13} + 4 q^{16} + 8 q^{17} + 6 q^{19} + 4 q^{20} + 10 q^{23} + 4 q^{25} + 2 q^{26} + 4 q^{29} + 4 q^{31} + 4 q^{32} + 8 q^{34} + 6 q^{38} + 4 q^{40}+ \cdots + 8 q^{98}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{4} - x^{3} - 6x^{2} + 3x + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( 2\nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{3} - 6\nu - 1 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -2\nu^{3} + 2\nu^{2} + 12\nu - 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{3} + 2\beta_{2} + 6 ) / 2 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{2} + 3\beta _1 + 1 \) Copy content Toggle raw display

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0.710287
−0.231361
−2.22001
2.74108
1.00000 0 1.00000 1.00000 0 −4.90338 1.00000 0 1.00000
1.2 1.00000 0 1.00000 1.00000 0 0.375781 1.00000 0 1.00000
1.3 1.00000 0 1.00000 1.00000 0 1.37888 1.00000 0 1.00000
1.4 1.00000 0 1.00000 1.00000 0 3.14871 1.00000 0 1.00000
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( -1 \)
\(3\) \( +1 \)
\(5\) \( -1 \)
\(29\) \( -1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2610.2.a.z yes 4
3.b odd 2 1 2610.2.a.y 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
2610.2.a.y 4 3.b odd 2 1
2610.2.a.z yes 4 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(\Gamma_0(2610))\):

\( T_{7}^{4} - 18T_{7}^{2} + 28T_{7} - 8 \) Copy content Toggle raw display
\( T_{11}^{4} - 18T_{11}^{2} + 28T_{11} - 8 \) Copy content Toggle raw display
\( T_{13}^{4} - 2T_{13}^{3} - 36T_{13}^{2} + 128T_{13} - 96 \) Copy content Toggle raw display
\( T_{19}^{4} - 6T_{19}^{3} - 26T_{19}^{2} + 56T_{19} + 32 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( (T - 1)^{4} \) Copy content Toggle raw display
$3$ \( T^{4} \) Copy content Toggle raw display
$5$ \( (T - 1)^{4} \) Copy content Toggle raw display
$7$ \( T^{4} - 18 T^{2} + \cdots - 8 \) Copy content Toggle raw display
$11$ \( T^{4} - 18 T^{2} + \cdots - 8 \) Copy content Toggle raw display
$13$ \( T^{4} - 2 T^{3} + \cdots - 96 \) Copy content Toggle raw display
$17$ \( T^{4} - 8 T^{3} + \cdots + 128 \) Copy content Toggle raw display
$19$ \( T^{4} - 6 T^{3} + \cdots + 32 \) Copy content Toggle raw display
$23$ \( T^{4} - 10 T^{3} + \cdots - 2400 \) Copy content Toggle raw display
$29$ \( (T - 1)^{4} \) Copy content Toggle raw display
$31$ \( T^{4} - 4 T^{3} + \cdots - 216 \) Copy content Toggle raw display
$37$ \( T^{4} - 44 T^{2} + \cdots + 320 \) Copy content Toggle raw display
$41$ \( T^{4} - 10 T^{3} + \cdots + 4832 \) Copy content Toggle raw display
$43$ \( T^{4} - 72 T^{2} + \cdots - 128 \) Copy content Toggle raw display
$47$ \( (T - 4)^{4} \) Copy content Toggle raw display
$53$ \( (T - 2)^{4} \) Copy content Toggle raw display
$59$ \( T^{4} - 8 T^{3} + \cdots + 608 \) Copy content Toggle raw display
$61$ \( T^{4} - 6 T^{3} + \cdots - 32 \) Copy content Toggle raw display
$67$ \( T^{4} + 6 T^{3} + \cdots + 32 \) Copy content Toggle raw display
$71$ \( T^{4} - 4 T^{3} + \cdots + 256 \) Copy content Toggle raw display
$73$ \( T^{4} + 4 T^{3} + \cdots - 96 \) Copy content Toggle raw display
$79$ \( T^{4} - 8 T^{3} + \cdots - 216 \) Copy content Toggle raw display
$83$ \( T^{4} - 4 T^{3} + \cdots - 1032 \) Copy content Toggle raw display
$89$ \( T^{4} - 2 T^{3} + \cdots - 96 \) Copy content Toggle raw display
$97$ \( T^{4} + 12 T^{3} + \cdots - 10464 \) Copy content Toggle raw display
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