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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [513,2,Mod(107,513)] 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("513.107"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(513, base_ring=CyclotomicField(6)) chi = DirichletCharacter(H, H._module([3, 5])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 513 = 3^{3} \cdot 19 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 513.m (of order \(6\), degree \(2\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [8,0,0,-12,0,0,8] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(7)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(4.09632562369\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(\zeta_{6})\)
Coefficient field: 8.0.2569273344.7
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 10x^{6} + 78x^{4} - 220x^{2} + 484 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{13}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{6}]$

$q$-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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{7} q^{2} + (\beta_{6} + 3 \beta_{5} + 2 \beta_{2}) q^{4} + ( - \beta_{4} + \beta_1) q^{5} + ( - \beta_{6} + \beta_{2} + 1) q^{7} + ( - \beta_{4} - \beta_{3} + 2 \beta_1) q^{8} + ( - 5 \beta_{6} - \beta_{5} - 2) q^{10}+ \cdots + (3 \beta_{7} + 2 \beta_{4} + 2 \beta_1) q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 12 q^{4} + 8 q^{7} - 12 q^{10} - 12 q^{13} - 8 q^{16} + 48 q^{22} - 36 q^{34} + 72 q^{40} + 20 q^{43} - 24 q^{49} - 12 q^{52} - 8 q^{55} - 136 q^{58} - 8 q^{61} + 16 q^{64} - 36 q^{67} + 48 q^{70}+ \cdots + 48 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 10x^{6} + 78x^{4} - 220x^{2} + 484 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( -\nu^{6} + 65\nu^{4} - 364\nu^{2} + 1650 ) / 858 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -\nu^{7} + 65\nu^{5} - 364\nu^{3} + 1650\nu ) / 858 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 5\nu^{7} - 39\nu^{5} + 390\nu^{3} - 242\nu ) / 858 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 5\nu^{6} - 39\nu^{4} + 390\nu^{2} - 1100 ) / 858 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -12\nu^{6} + 65\nu^{4} - 364\nu^{2} - 220 ) / 858 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -12\nu^{7} + 65\nu^{5} - 364\nu^{3} - 220\nu ) / 858 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( 2\beta_{6} + 5\beta_{5} + \beta_{2} + 5 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( 2\beta_{7} + 5\beta_{4} + \beta_{3} \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( 10\beta_{6} + 28\beta_{5} + 20\beta_{2} \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( 10\beta_{7} + 28\beta_{4} + 20\beta_{3} - 28\beta_1 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -78\beta_{6} + 78\beta_{2} - 170 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( -78\beta_{7} + 78\beta_{3} - 170\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/513\mathbb{Z}\right)^\times\).

\(n\) \(191\) \(325\)
\(\chi(n)\) \(-1\) \(-\beta_{5}\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
107.1
2.24701 + 1.29731i
−1.56555 0.903873i
1.56555 + 0.903873i
−2.24701 1.29731i
2.24701 1.29731i
−1.56555 + 0.903873i
1.56555 0.903873i
−2.24701 + 1.29731i
−1.29731 2.24701i 0 −2.36603 + 4.09808i 2.24701 1.29731i 0 −0.732051 7.08863 0 −5.83013 3.36603i
107.2 −0.903873 1.56555i 0 −0.633975 + 1.09808i −1.56555 + 0.903873i 0 2.73205 −1.32336 0 2.83013 + 1.63397i
107.3 0.903873 + 1.56555i 0 −0.633975 + 1.09808i 1.56555 0.903873i 0 2.73205 1.32336 0 2.83013 + 1.63397i
107.4 1.29731 + 2.24701i 0 −2.36603 + 4.09808i −2.24701 + 1.29731i 0 −0.732051 −7.08863 0 −5.83013 3.36603i
350.1 −1.29731 + 2.24701i 0 −2.36603 4.09808i 2.24701 + 1.29731i 0 −0.732051 7.08863 0 −5.83013 + 3.36603i
350.2 −0.903873 + 1.56555i 0 −0.633975 1.09808i −1.56555 0.903873i 0 2.73205 −1.32336 0 2.83013 1.63397i
350.3 0.903873 1.56555i 0 −0.633975 1.09808i 1.56555 + 0.903873i 0 2.73205 1.32336 0 2.83013 1.63397i
350.4 1.29731 2.24701i 0 −2.36603 4.09808i −2.24701 1.29731i 0 −0.732051 −7.08863 0 −5.83013 + 3.36603i
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 107.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
19.d odd 6 1 inner
57.f even 6 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 513.2.m.e 8
3.b odd 2 1 inner 513.2.m.e 8
19.d odd 6 1 inner 513.2.m.e 8
57.f even 6 1 inner 513.2.m.e 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
513.2.m.e 8 1.a even 1 1 trivial
513.2.m.e 8 3.b odd 2 1 inner
513.2.m.e 8 19.d odd 6 1 inner
513.2.m.e 8 57.f even 6 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(513, [\chi])\):

\( T_{2}^{8} + 10T_{2}^{6} + 78T_{2}^{4} + 220T_{2}^{2} + 484 \) Copy content Toggle raw display
\( T_{5}^{8} - 10T_{5}^{6} + 78T_{5}^{4} - 220T_{5}^{2} + 484 \) Copy content Toggle raw display
\( T_{7}^{2} - 2T_{7} - 2 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} + 10 T^{6} + \cdots + 484 \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( T^{8} - 10 T^{6} + \cdots + 484 \) Copy content Toggle raw display
$7$ \( (T^{2} - 2 T - 2)^{4} \) Copy content Toggle raw display
$11$ \( (T^{4} + 28 T^{2} + 88)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 6 T^{3} + \cdots + 169)^{2} \) Copy content Toggle raw display
$17$ \( T^{8} - 90 T^{6} + \cdots + 3175524 \) Copy content Toggle raw display
$19$ \( (T^{4} + 11 T^{2} + 361)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} - 40 T^{6} + \cdots + 123904 \) Copy content Toggle raw display
$29$ \( T^{8} + 142 T^{6} + \cdots + 13823524 \) Copy content Toggle raw display
$31$ \( (T^{4} + 158 T^{2} + 5041)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + 126 T^{2} + 81)^{2} \) Copy content Toggle raw display
$41$ \( T^{8} + 52 T^{6} + \cdots + 7744 \) Copy content Toggle raw display
$43$ \( (T^{4} - 10 T^{3} + \cdots + 169)^{2} \) Copy content Toggle raw display
$47$ \( T^{8} - 40 T^{6} + \cdots + 123904 \) Copy content Toggle raw display
$53$ \( T^{8} + 30 T^{6} + \cdots + 39204 \) Copy content Toggle raw display
$59$ \( T^{8} + 106 T^{6} + \cdots + 7086244 \) Copy content Toggle raw display
$61$ \( (T^{4} + 4 T^{3} + 15 T^{2} + \cdots + 1)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + 18 T^{3} + 110 T^{2} + \cdots + 4)^{2} \) Copy content Toggle raw display
$71$ \( T^{8} \) Copy content Toggle raw display
$73$ \( (T^{4} - 18 T^{3} + \cdots + 2916)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} - 30 T^{3} + \cdots + 5041)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 10 T^{2} + 22)^{2} \) Copy content Toggle raw display
$89$ \( T^{8} + 84 T^{6} + \cdots + 627264 \) Copy content Toggle raw display
$97$ \( (T^{4} - 24 T^{3} + \cdots + 529)^{2} \) Copy content Toggle raw display
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