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Properties

Label 320.8.a.c
Level $320$
Weight $8$
Character orbit 320.a
Self dual yes
Analytic conductor $99.963$
Analytic rank $0$
Dimension $1$
CM no
Inner twists $1$

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Show commands: Magma / Pari/GP / SageMath

Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [320,8,Mod(1,320)] 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("320.1"); S:= CuspForms(chi, 8); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(320, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0, 0, 0])) N = Newforms(chi, 8, names="a")
 
Level: \( N \) \(=\) \( 320 = 2^{6} \cdot 5 \)
Weight: \( k \) \(=\) \( 8 \)
Character orbit: \([\chi]\) \(=\) 320.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [1,0,-28,0,-125,0,104,0,-1403] 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: yes
Analytic conductor: \(99.9632081549\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: no (minimal twist has level 10)
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)
 
\(f(q)\) \(=\) \( q - 28 q^{3} - 125 q^{5} + 104 q^{7} - 1403 q^{9} + 5148 q^{11} + 8602 q^{13} + 3500 q^{15} + 20274 q^{17} - 45500 q^{19} - 2912 q^{21} - 72072 q^{23} + 15625 q^{25} + 100520 q^{27} - 231510 q^{29} - 80128 q^{31}+ \cdots - 7222644 q^{99}+O(q^{100}) \) 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
0 −28.0000 0 −125.000 0 104.000 0 −1403.00 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( +1 \)
\(5\) \( +1 \)

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 320.8.a.c 1
4.b odd 2 1 320.8.a.f 1
8.b even 2 1 10.8.a.a ✓ 1
8.d odd 2 1 80.8.a.a 1
24.h odd 2 1 90.8.a.a 1
40.e odd 2 1 400.8.a.m 1
40.f even 2 1 50.8.a.b 1
40.i odd 4 2 50.8.b.d 2
40.k even 4 2 400.8.c.i 2
56.h odd 2 1 490.8.a.b 1
120.i odd 2 1 450.8.a.t 1
120.w even 4 2 450.8.c.p 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
10.8.a.a ✓ 1 8.b even 2 1
50.8.a.b 1 40.f even 2 1
50.8.b.d 2 40.i odd 4 2
80.8.a.a 1 8.d odd 2 1
90.8.a.a 1 24.h odd 2 1
320.8.a.c 1 1.a even 1 1 trivial
320.8.a.f 1 4.b odd 2 1
400.8.a.m 1 40.e odd 2 1
400.8.c.i 2 40.k even 4 2
450.8.a.t 1 120.i odd 2 1
450.8.c.p 2 120.w even 4 2
490.8.a.b 1 56.h odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3} + 28 \) acting on \(S_{8}^{\mathrm{new}}(\Gamma_0(320))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T \) Copy content Toggle raw display
$3$ \( T + 28 \) Copy content Toggle raw display
$5$ \( T + 125 \) Copy content Toggle raw display
$7$ \( T - 104 \) Copy content Toggle raw display
$11$ \( T - 5148 \) Copy content Toggle raw display
$13$ \( T - 8602 \) Copy content Toggle raw display
$17$ \( T - 20274 \) Copy content Toggle raw display
$19$ \( T + 45500 \) Copy content Toggle raw display
$23$ \( T + 72072 \) Copy content Toggle raw display
$29$ \( T + 231510 \) Copy content Toggle raw display
$31$ \( T + 80128 \) Copy content Toggle raw display
$37$ \( T + 104654 \) Copy content Toggle raw display
$41$ \( T - 584922 \) Copy content Toggle raw display
$43$ \( T - 795532 \) Copy content Toggle raw display
$47$ \( T - 425664 \) Copy content Toggle raw display
$53$ \( T + 1500798 \) Copy content Toggle raw display
$59$ \( T + 246420 \) Copy content Toggle raw display
$61$ \( T + 893942 \) Copy content Toggle raw display
$67$ \( T - 2336836 \) Copy content Toggle raw display
$71$ \( T + 203688 \) Copy content Toggle raw display
$73$ \( T + 3805702 \) Copy content Toggle raw display
$79$ \( T - 5053040 \) Copy content Toggle raw display
$83$ \( T - 45492 \) Copy content Toggle raw display
$89$ \( T - 980010 \) Copy content Toggle raw display
$97$ \( T + 5247646 \) Copy content Toggle raw display
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