Properties

Label 1080.2.m.a
Level $1080$
Weight $2$
Character orbit 1080.m
Analytic conductor $8.624$
Analytic rank $0$
Dimension $8$
CM discriminant -15
Inner twists $8$

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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] = [1080,2,Mod(539,1080)] 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("1080.539"); S:= CuspForms(chi, 2); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(1080, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([1, 1, 1, 1])) N = Newforms(chi, 2, names="a")
 
Level: \( N \) \(=\) \( 1080 = 2^{3} \cdot 3^{3} \cdot 5 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1080.m (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: \(8.62384341830\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: 8.0.12960000.1
Copy content comment:defining polynomial
 
Copy content gp:f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} - 3x^{6} + 8x^{4} - 3x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{2}\cdot 3^{4} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{U}(1)[D_{2}]$

$q$-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.

\(f(q)\) \(=\) \( q - \beta_{3} q^{2} + \beta_1 q^{4} + (\beta_{6} + \beta_{3}) q^{5} + (\beta_{6} - \beta_{2}) q^{8} + (\beta_{7} - \beta_1 + 1) q^{10} + ( - \beta_{4} + 2) q^{16} + ( - \beta_{5} + \beta_{3} - 2 \beta_{2}) q^{17}+ \cdots + 7 \beta_{3} q^{98}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q + 2 q^{4} + 10 q^{10} + 14 q^{16} - 16 q^{19} - 40 q^{25} - 18 q^{34} - 20 q^{40} + 2 q^{46} - 56 q^{49} + 44 q^{64} + 86 q^{76} + 40 q^{94}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} - 3x^{6} + 8x^{4} - 3x^{2} + 1 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( -\nu^{6} + 8\nu^{4} - 16\nu^{2} + 19 ) / 8 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 5\nu^{7} - 8\nu^{5} + 24\nu^{3} + 17\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -5\nu^{7} + 16\nu^{5} - 40\nu^{3} + 23\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 5\nu^{6} - 16\nu^{4} + 56\nu^{2} - 23 ) / 8 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -13\nu^{7} + 32\nu^{5} - 80\nu^{3} - 17\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 17\nu^{7} - 48\nu^{5} + 128\nu^{3} - 27\nu ) / 8 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -7\nu^{6} + 20\nu^{4} - 52\nu^{2} + 13 ) / 4 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{6} - \beta_{5} + 4\beta_{3} - 2\beta_{2} ) / 6 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} + 3\beta_{4} + \beta _1 + 3 ) / 6 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( 3\beta_{6} + 2\beta_{5} + 5\beta_{3} ) / 3 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( \beta_{7} + 5\beta_{4} + 11\beta _1 - 15 ) / 6 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 7\beta_{6} + 13\beta_{5} + 6\beta_{3} + 16\beta_{2} ) / 6 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( -4\beta_{7} - 4\beta_{4} + 12\beta _1 - 27 ) / 3 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -21\beta_{6} + 5\beta_{5} - 52\beta_{3} + 42\beta_{2} ) / 6 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1080\mathbb{Z}\right)^\times\).

\(n\) \(217\) \(271\) \(541\) \(1001\)
\(\chi(n)\) \(-1\) \(-1\) \(-1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
539.1
0.535233 0.309017i
0.535233 + 0.309017i
1.40126 + 0.809017i
1.40126 0.809017i
−1.40126 + 0.809017i
−1.40126 0.809017i
−0.535233 0.309017i
−0.535233 + 0.309017i
−1.40126 0.190983i 0 1.92705 + 0.535233i 2.23607i 0 0 −2.59808 1.11803i 0 −0.427051 + 3.13331i
539.2 −1.40126 + 0.190983i 0 1.92705 0.535233i 2.23607i 0 0 −2.59808 + 1.11803i 0 −0.427051 3.13331i
539.3 −0.535233 1.30902i 0 −1.42705 + 1.40126i 2.23607i 0 0 2.59808 + 1.11803i 0 2.92705 1.19682i
539.4 −0.535233 + 1.30902i 0 −1.42705 1.40126i 2.23607i 0 0 2.59808 1.11803i 0 2.92705 + 1.19682i
539.5 0.535233 1.30902i 0 −1.42705 1.40126i 2.23607i 0 0 −2.59808 + 1.11803i 0 2.92705 + 1.19682i
539.6 0.535233 + 1.30902i 0 −1.42705 + 1.40126i 2.23607i 0 0 −2.59808 1.11803i 0 2.92705 1.19682i
539.7 1.40126 0.190983i 0 1.92705 0.535233i 2.23607i 0 0 2.59808 1.11803i 0 −0.427051 3.13331i
539.8 1.40126 + 0.190983i 0 1.92705 + 0.535233i 2.23607i 0 0 2.59808 + 1.11803i 0 −0.427051 + 3.13331i
\(n\): e.g. 2-40 or 80-90
Embeddings: e.g. 1-3 or 539.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
15.d odd 2 1 CM by \(\Q(\sqrt{-15}) \)
3.b odd 2 1 inner
5.b even 2 1 inner
8.d odd 2 1 inner
24.f even 2 1 inner
40.e odd 2 1 inner
120.m even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1080.2.m.a 8
3.b odd 2 1 inner 1080.2.m.a 8
4.b odd 2 1 4320.2.m.a 8
5.b even 2 1 inner 1080.2.m.a 8
8.b even 2 1 4320.2.m.a 8
8.d odd 2 1 inner 1080.2.m.a 8
12.b even 2 1 4320.2.m.a 8
15.d odd 2 1 CM 1080.2.m.a 8
20.d odd 2 1 4320.2.m.a 8
24.f even 2 1 inner 1080.2.m.a 8
24.h odd 2 1 4320.2.m.a 8
40.e odd 2 1 inner 1080.2.m.a 8
40.f even 2 1 4320.2.m.a 8
60.h even 2 1 4320.2.m.a 8
120.i odd 2 1 4320.2.m.a 8
120.m even 2 1 inner 1080.2.m.a 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1080.2.m.a 8 1.a even 1 1 trivial
1080.2.m.a 8 3.b odd 2 1 inner
1080.2.m.a 8 5.b even 2 1 inner
1080.2.m.a 8 8.d odd 2 1 inner
1080.2.m.a 8 15.d odd 2 1 CM
1080.2.m.a 8 24.f even 2 1 inner
1080.2.m.a 8 40.e odd 2 1 inner
1080.2.m.a 8 120.m even 2 1 inner
4320.2.m.a 8 4.b odd 2 1
4320.2.m.a 8 8.b even 2 1
4320.2.m.a 8 12.b even 2 1
4320.2.m.a 8 20.d odd 2 1
4320.2.m.a 8 24.h odd 2 1
4320.2.m.a 8 40.f even 2 1
4320.2.m.a 8 60.h even 2 1
4320.2.m.a 8 120.i odd 2 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{7} \) acting on \(S_{2}^{\mathrm{new}}(1080, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} - T^{6} + \cdots + 16 \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( (T^{2} + 5)^{4} \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( T^{8} \) Copy content Toggle raw display
$13$ \( T^{8} \) Copy content Toggle raw display
$17$ \( (T^{4} - 54 T^{2} + 9)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} + 4 T - 41)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 58 T^{2} + 121)^{2} \) Copy content Toggle raw display
$29$ \( T^{8} \) Copy content Toggle raw display
$31$ \( (T^{4} + 126 T^{2} + 1089)^{2} \) Copy content Toggle raw display
$37$ \( T^{8} \) Copy content Toggle raw display
$41$ \( T^{8} \) Copy content Toggle raw display
$43$ \( T^{8} \) Copy content Toggle raw display
$47$ \( (T^{2} + 80)^{4} \) Copy content Toggle raw display
$53$ \( (T^{4} + 298 T^{2} + 19321)^{2} \) Copy content Toggle raw display
$59$ \( T^{8} \) Copy content Toggle raw display
$61$ \( (T^{4} + 126 T^{2} + 3249)^{2} \) Copy content Toggle raw display
$67$ \( T^{8} \) Copy content Toggle raw display
$71$ \( T^{8} \) Copy content Toggle raw display
$73$ \( T^{8} \) Copy content Toggle raw display
$79$ \( (T^{4} + 414 T^{2} + 31329)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} - 486 T^{2} + 56169)^{2} \) Copy content Toggle raw display
$89$ \( T^{8} \) Copy content Toggle raw display
$97$ \( T^{8} \) Copy content Toggle raw display
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