Properties

Label 64.8.b.c
Level $64$
Weight $8$
Character orbit 64.b
Analytic conductor $19.993$
Analytic rank $0$
Dimension $8$
Inner twists $4$

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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [64,8,Mod(33,64)] 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("64.33"); S:= CuspForms(chi, 8); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(64, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 1])) N = Newforms(chi, 8, names="a")
 
Level: \( N \) \(=\) \( 64 = 2^{6} \)
Weight: \( k \) \(=\) \( 8 \)
Character orbit: \([\chi]\) \(=\) 64.b (of order \(2\), degree \(1\), minimal)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [8] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(1)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(19.9926416310\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.2705346343547136.10
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 301x^{6} + 68101x^{4} - 6772500x^{2} + 506250000 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{19}]\)
Coefficient ring index: \( 2^{42} \)
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 \(1,\beta_1,\ldots,\beta_{7}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + (\beta_{6} + \beta_{4}) q^{3} + \beta_1 q^{5} - \beta_{7} q^{7} + (5 \beta_{2} - 617) q^{9} + ( - 96 \beta_{6} - 75 \beta_{4}) q^{11} + (3 \beta_{3} + 45 \beta_1) q^{13} + ( - 10 \beta_{7} + 11 \beta_{5}) q^{15}+ \cdots + (317187 \beta_{6} + 133155 \beta_{4}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 4936 q^{9} + 90960 q^{17} + 363112 q^{25} + 1789920 q^{33} - 837552 q^{41} + 3601480 q^{49} - 2830240 q^{57} - 12029184 q^{65} - 15296240 q^{73} - 15242072 q^{81} + 15114384 q^{89} + 1188560 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 301x^{6} + 68101x^{4} - 6772500x^{2} + 506250000 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 130784\nu^{6} - 39770984\nu^{4} + 5841976184\nu^{2} - 438311070000 ) / 383068125 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 32\nu^{6} + 111254416 ) / 68101 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( 30784\nu^{6} - 8815984\nu^{4} + 1539231184\nu^{2} - 109304820000 ) / 34824375 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 408457\nu^{7} - 92413057\nu^{5} + 17090422657\nu^{3} - 686981250000\nu ) / 114920437500 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( 104732\nu^{7} - 349494332\nu^{5} + 56165073932\nu^{3} - 8572919940000\nu ) / 28730109375 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -1204\nu^{7} + 272404\nu^{5} - 41403604\nu^{3} + 2025000000\nu ) / 190265625 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 256468\nu^{7} + 267773132\nu^{5} - 31566992732\nu^{3} + 4287965940000\nu ) / 28730109375 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( -\beta_{7} + 7\beta_{6} - \beta_{5} + 16\beta_{4} ) / 128 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( 73\beta_{3} - 8\beta_{2} - 178\beta _1 + 38528 ) / 512 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 1357\beta_{6} + 2416\beta_{4} ) / 64 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( 10723\beta_{3} + 2408\beta_{2} - 31078\beta _1 - 5836928 ) / 512 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 206183\beta_{7} + 2007656\beta_{6} + 115883\beta_{5} + 2937728\beta_{4} ) / 1024 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 68101\beta_{2} - 111254416 ) / 32 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( 33193583\beta_{7} - 360044456\beta_{6} + 12763283\beta_{5} - 449376128\beta_{4} ) / 1024 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/64\mathbb{Z}\right)^\times\).

\(n\) \(5\) \(63\)
\(\chi(n)\) \(-1\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
33.1
−11.0484 6.37883i
11.0484 6.37883i
10.1824 5.87883i
−10.1824 5.87883i
−10.1824 + 5.87883i
10.1824 + 5.87883i
11.0484 + 6.37883i
−11.0484 + 6.37883i
0 69.0306i 0 232.201i 0 −1504.06 0 −2578.22 0
33.2 0 69.0306i 0 232.201i 0 1504.06 0 −2578.22 0
33.3 0 29.0306i 0 107.493i 0 534.108 0 1344.22 0
33.4 0 29.0306i 0 107.493i 0 −534.108 0 1344.22 0
33.5 0 29.0306i 0 107.493i 0 −534.108 0 1344.22 0
33.6 0 29.0306i 0 107.493i 0 534.108 0 1344.22 0
33.7 0 69.0306i 0 232.201i 0 1504.06 0 −2578.22 0
33.8 0 69.0306i 0 232.201i 0 −1504.06 0 −2578.22 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 33.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
8.b even 2 1 inner
8.d odd 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 64.8.b.c 8
3.b odd 2 1 576.8.d.f 8
4.b odd 2 1 inner 64.8.b.c 8
8.b even 2 1 inner 64.8.b.c 8
8.d odd 2 1 inner 64.8.b.c 8
12.b even 2 1 576.8.d.f 8
16.e even 4 1 256.8.a.j 4
16.e even 4 1 256.8.a.p 4
16.f odd 4 1 256.8.a.j 4
16.f odd 4 1 256.8.a.p 4
24.f even 2 1 576.8.d.f 8
24.h odd 2 1 576.8.d.f 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
64.8.b.c 8 1.a even 1 1 trivial
64.8.b.c 8 4.b odd 2 1 inner
64.8.b.c 8 8.b even 2 1 inner
64.8.b.c 8 8.d odd 2 1 inner
256.8.a.j 4 16.e even 4 1
256.8.a.j 4 16.f odd 4 1
256.8.a.p 4 16.e even 4 1
256.8.a.p 4 16.f odd 4 1
576.8.d.f 8 3.b odd 2 1
576.8.d.f 8 12.b even 2 1
576.8.d.f 8 24.f even 2 1
576.8.d.f 8 24.h odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{4} + 5608T_{3}^{2} + 4016016 \) acting on \(S_{8}^{\mathrm{new}}(64, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T^{4} + 5608 T^{2} + 4016016)^{2} \) Copy content Toggle raw display
$5$ \( (T^{4} + 65472 T^{2} + 623001600)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} - 2547456 T^{2} + 645335875584)^{2} \) Copy content Toggle raw display
$11$ \( (T^{4} + \cdots + 77526545767056)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + \cdots + 55\!\cdots\!04)^{2} \) Copy content Toggle raw display
$17$ \( (T^{2} - 22740 T + 61426404)^{4} \) Copy content Toggle raw display
$19$ \( (T^{4} + \cdots + 11\!\cdots\!96)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} + \cdots + 38\!\cdots\!00)^{2} \) Copy content Toggle raw display
$29$ \( (T^{4} + \cdots + 91\!\cdots\!64)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} + \cdots + 29\!\cdots\!64)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} + \cdots + 33\!\cdots\!04)^{2} \) Copy content Toggle raw display
$41$ \( (T^{2} + 209388 T - 538628183964)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} + \cdots + 10\!\cdots\!76)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + \cdots + 34\!\cdots\!04)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + \cdots + 99\!\cdots\!00)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} + \cdots + 60\!\cdots\!36)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + \cdots + 42\!\cdots\!04)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} + \cdots + 45\!\cdots\!76)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} + \cdots + 13\!\cdots\!84)^{2} \) Copy content Toggle raw display
$73$ \( (T^{2} + \cdots + 2806911930244)^{4} \) Copy content Toggle raw display
$79$ \( (T^{4} + \cdots + 23\!\cdots\!84)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + \cdots + 74\!\cdots\!00)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + \cdots - 32517358628796)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} + \cdots - 30423027470684)^{4} \) Copy content Toggle raw display
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