Properties

Label 880.2.bz.b
Level $880$
Weight $2$
Character orbit 880.bz
Analytic conductor $7.027$
Analytic rank $0$
Dimension $16$
CM no
Inner twists $4$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [880,2,Mod(271,880)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(880, base_ring=CyclotomicField(10))
 
chi = DirichletCharacter(H, H._module([5, 0, 0, 7]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("880.271");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 880 = 2^{4} \cdot 5 \cdot 11 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 880.bz (of order \(10\), degree \(4\), minimal)

Newform invariants

comment: select newform
 
sage: f = N[0] # Warning: the index may be different
 
gp: f = lf[1] \\ Warning: the index may be different
 
Self dual: no
Analytic conductor: \(7.02683537787\)
Analytic rank: \(0\)
Dimension: \(16\)
Relative dimension: \(4\) over \(\Q(\zeta_{10})\)
Coefficient field: \(\mathbb{Q}[x]/(x^{16} - \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{16} - 3x^{14} + 2x^{10} + 9x^{8} + 8x^{6} - 192x^{2} + 256 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{10}]$

$q$-expansion

comment: q-expansion
 
sage: f.q_expansion() # note that sage often uses an isomorphic number field
 
gp: mfcoefs(f, 20)
 

Coefficients of the \(q\)-expansion are expressed in terms of a basis \(1,\beta_1,\ldots,\beta_{15}\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q + ( - \beta_{14} + \beta_{10} + \cdots + \beta_1) q^{3}+ \cdots + (\beta_{12} + \beta_{11} - \beta_{8} + \cdots + 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + ( - \beta_{14} + \beta_{10} + \cdots + \beta_1) q^{3}+ \cdots + ( - 6 \beta_{15} - \beta_{14} + \cdots - \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 16 q + 4 q^{5} + 6 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 16 q + 4 q^{5} + 6 q^{9} - 30 q^{17} - 4 q^{25} - 10 q^{29} - 18 q^{33} - 12 q^{37} + 24 q^{45} + 38 q^{49} + 6 q^{53} + 50 q^{57} - 20 q^{61} + 18 q^{69} - 50 q^{73} - 80 q^{77} + 40 q^{81} + 20 q^{85} - 80 q^{89} + 18 q^{93} + 60 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{16} - 3x^{14} + 2x^{10} + 9x^{8} + 8x^{6} - 192x^{2} + 256 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( \nu \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \nu^{2} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( \nu^{15} + \nu^{13} + 4\nu^{11} + 18\nu^{9} + 81\nu^{7} + 332\nu^{5} + 1328\nu^{3} - 1792\nu ) / 3456 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( \nu^{14} + \nu^{12} + 4\nu^{10} + 18\nu^{8} + 81\nu^{6} + 332\nu^{4} - 400\nu^{2} - 64 ) / 1728 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -\nu^{15} - \nu^{13} - 4\nu^{11} - 18\nu^{9} - 81\nu^{7} - 332\nu^{5} + 400\nu^{3} + 64\nu ) / 1728 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( -\nu^{14} - \nu^{12} - 4\nu^{10} - 18\nu^{8} - 81\nu^{6} + 100\nu^{4} - 32\nu^{2} + 64 ) / 432 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -3\nu^{15} - \nu^{13} - 2\nu^{11} - 6\nu^{9} - 15\nu^{7} + 78\nu^{5} - 176\nu^{3} + 224\nu ) / 576 \) Copy content Toggle raw display
\(\beta_{8}\)\(=\) \( ( -5\nu^{14} - \nu^{12} + 6\nu^{8} + 51\nu^{6} - 88\nu^{4} - 176\nu^{2} + 384 ) / 576 \) Copy content Toggle raw display
\(\beta_{9}\)\(=\) \( ( 5\nu^{15} + \nu^{13} - 6\nu^{9} - 51\nu^{7} + 88\nu^{5} + 176\nu^{3} - 384\nu ) / 576 \) Copy content Toggle raw display
\(\beta_{10}\)\(=\) \( ( -\nu^{15} + 3\nu^{13} - 2\nu^{9} - 9\nu^{7} - 8\nu^{5} + 192\nu ) / 128 \) Copy content Toggle raw display
\(\beta_{11}\)\(=\) \( ( -\nu^{14} + 3\nu^{12} - 2\nu^{8} - 9\nu^{6} - 8\nu^{4} + 192 ) / 64 \) Copy content Toggle raw display
\(\beta_{12}\)\(=\) \( ( 37\nu^{14} - 47\nu^{12} - 128\nu^{10} - 54\nu^{8} + 333\nu^{6} + 872\nu^{4} + 1088\nu^{2} - 6016 ) / 1728 \) Copy content Toggle raw display
\(\beta_{13}\)\(=\) \( ( \nu^{14} - \nu^{10} - 6\nu^{8} + 3\nu^{6} + 11\nu^{4} + 36\nu^{2} - 80 ) / 36 \) Copy content Toggle raw display
\(\beta_{14}\)\(=\) \( ( -37\nu^{15} + 47\nu^{13} + 128\nu^{11} + 54\nu^{9} - 333\nu^{7} - 872\nu^{5} - 1088\nu^{3} + 6016\nu ) / 1728 \) Copy content Toggle raw display
\(\beta_{15}\)\(=\) \( ( 7\nu^{15} - 4\nu^{13} - 15\nu^{11} - 30\nu^{9} + 33\nu^{7} + 89\nu^{5} + 268\nu^{3} - 672\nu ) / 288 \) Copy content Toggle raw display
\(\nu\)\(=\) \( \beta_1 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( \beta_{2} \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( \beta_{5} + 2\beta_{3} + \beta_1 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( \beta_{6} + 4\beta_{4} + \beta_{2} \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( \beta_{9} + 2\beta_{7} - 2\beta_{5} + 2\beta_{3} + \beta_1 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( \beta_{13} + 4\beta_{8} - 2\beta_{6} + 4\beta_{4} + \beta_{2} \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( 2\beta_{15} + \beta_{14} - 6\beta_{9} - 4\beta_{7} - 6\beta_{5} + 2\beta_{3} \) Copy content Toggle raw display
\(\nu^{8}\)\(=\) \( -6\beta_{13} + 3\beta_{12} + \beta_{11} - 12\beta_{8} - 6\beta_{6} + 3 \) Copy content Toggle raw display
\(\nu^{9}\)\(=\) \( -12\beta_{15} - 9\beta_{14} + 2\beta_{10} + 6\beta_{9} - 12\beta_{7} + 9\beta_1 \) Copy content Toggle raw display
\(\nu^{10}\)\(=\) \( 6\beta_{13} - 15\beta_{12} - 9\beta_{11} + 24\beta_{4} + 9\beta_{2} - 11 \) Copy content Toggle raw display
\(\nu^{11}\)\(=\) \( 12\beta_{15} + 21\beta_{14} - 18\beta_{10} - 21\beta_{5} + 18\beta_{3} - 8\beta_1 \) Copy content Toggle raw display
\(\nu^{12}\)\(=\) \( 3\beta_{12} + 21\beta_{11} - 24\beta_{8} - 21\beta_{6} + 12\beta_{4} - 8\beta_{2} - 33 \) Copy content Toggle raw display
\(\nu^{13}\)\(=\) \( -3\beta_{14} + 42\beta_{10} + 3\beta_{9} - 42\beta_{7} - 41\beta_{5} - 16\beta_{3} - 41\beta_1 \) Copy content Toggle raw display
\(\nu^{14}\)\(=\) \( 3\beta_{13} + 3\beta_{12} - 3\beta_{11} - 84\beta_{8} - 41\beta_{6} - 32\beta_{4} - 41\beta_{2} + 87 \) Copy content Toggle raw display
\(\nu^{15}\)\(=\) \( 6\beta_{15} - 6\beta_{10} + 43\beta_{9} - 82\beta_{7} - 53\beta_{5} - 82\beta_{3} + 43\beta_1 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/880\mathbb{Z}\right)^\times\).

\(n\) \(111\) \(177\) \(321\) \(661\)
\(\chi(n)\) \(-1\) \(1\) \(\beta_{4}\) \(1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
271.1
−1.36558 + 0.367690i
−0.888653 1.10013i
0.888653 + 1.10013i
1.36558 0.367690i
−0.328801 + 1.37546i
−1.40975 0.112332i
1.40975 + 0.112332i
0.328801 1.37546i
−1.36558 0.367690i
−0.888653 + 1.10013i
0.888653 1.10013i
1.36558 + 0.367690i
−0.328801 1.37546i
−1.40975 + 0.112332i
1.40975 0.112332i
0.328801 + 1.37546i
0 −2.68648 0.872889i 0 0.809017 0.587785i 0 −0.267142 0.822180i 0 4.02817 + 2.92664i 0
271.2 0 −0.960946 0.312230i 0 0.809017 0.587785i 0 0.799294 + 2.45998i 0 −1.60112 1.16328i 0
271.3 0 0.960946 + 0.312230i 0 0.809017 0.587785i 0 −0.799294 2.45998i 0 −1.60112 1.16328i 0
271.4 0 2.68648 + 0.872889i 0 0.809017 0.587785i 0 0.267142 + 0.822180i 0 4.02817 + 2.92664i 0
431.1 0 −1.53534 2.11321i 0 −0.309017 0.951057i 0 4.23323 + 3.07562i 0 −1.18134 + 3.63580i 0
431.2 0 −0.867276 1.19370i 0 −0.309017 0.951057i 0 −0.345723 0.251183i 0 0.254292 0.782631i 0
431.3 0 0.867276 + 1.19370i 0 −0.309017 0.951057i 0 0.345723 + 0.251183i 0 0.254292 0.782631i 0
431.4 0 1.53534 + 2.11321i 0 −0.309017 0.951057i 0 −4.23323 3.07562i 0 −1.18134 + 3.63580i 0
591.1 0 −2.68648 + 0.872889i 0 0.809017 + 0.587785i 0 −0.267142 + 0.822180i 0 4.02817 2.92664i 0
591.2 0 −0.960946 + 0.312230i 0 0.809017 + 0.587785i 0 0.799294 2.45998i 0 −1.60112 + 1.16328i 0
591.3 0 0.960946 0.312230i 0 0.809017 + 0.587785i 0 −0.799294 + 2.45998i 0 −1.60112 + 1.16328i 0
591.4 0 2.68648 0.872889i 0 0.809017 + 0.587785i 0 0.267142 0.822180i 0 4.02817 2.92664i 0
831.1 0 −1.53534 + 2.11321i 0 −0.309017 + 0.951057i 0 4.23323 3.07562i 0 −1.18134 3.63580i 0
831.2 0 −0.867276 + 1.19370i 0 −0.309017 + 0.951057i 0 −0.345723 + 0.251183i 0 0.254292 + 0.782631i 0
831.3 0 0.867276 1.19370i 0 −0.309017 + 0.951057i 0 0.345723 0.251183i 0 0.254292 + 0.782631i 0
831.4 0 1.53534 2.11321i 0 −0.309017 + 0.951057i 0 −4.23323 + 3.07562i 0 −1.18134 3.63580i 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 271.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
4.b odd 2 1 inner
11.d odd 10 1 inner
44.g even 10 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 880.2.bz.b 16
4.b odd 2 1 inner 880.2.bz.b 16
11.d odd 10 1 inner 880.2.bz.b 16
44.g even 10 1 inner 880.2.bz.b 16
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
880.2.bz.b 16 1.a even 1 1 trivial
880.2.bz.b 16 4.b odd 2 1 inner
880.2.bz.b 16 11.d odd 10 1 inner
880.2.bz.b 16 44.g even 10 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{16} - 9T_{3}^{14} + 62T_{3}^{12} - 387T_{3}^{10} + 3325T_{3}^{8} - 2493T_{3}^{6} + 12962T_{3}^{4} - 20691T_{3}^{2} + 14641 \) acting on \(S_{2}^{\mathrm{new}}(880, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{16} \) Copy content Toggle raw display
$3$ \( T^{16} - 9 T^{14} + \cdots + 14641 \) Copy content Toggle raw display
$5$ \( (T^{4} - T^{3} + T^{2} + \cdots + 1)^{4} \) Copy content Toggle raw display
$7$ \( T^{16} - 5 T^{14} + \cdots + 625 \) Copy content Toggle raw display
$11$ \( T^{16} + \cdots + 214358881 \) Copy content Toggle raw display
$13$ \( (T^{8} - 43 T^{6} + \cdots + 121)^{2} \) Copy content Toggle raw display
$17$ \( (T^{8} + 15 T^{7} + \cdots + 1681)^{2} \) Copy content Toggle raw display
$19$ \( T^{16} - 3 T^{14} + \cdots + 2825761 \) Copy content Toggle raw display
$23$ \( (T^{8} + 93 T^{6} + \cdots + 121801)^{2} \) Copy content Toggle raw display
$29$ \( (T^{8} + 5 T^{7} + \cdots + 2128681)^{2} \) Copy content Toggle raw display
$31$ \( T^{16} - 84 T^{14} + \cdots + 1 \) Copy content Toggle raw display
$37$ \( (T^{8} + 6 T^{7} + \cdots + 961)^{2} \) Copy content Toggle raw display
$41$ \( (T^{8} - 97 T^{6} + \cdots + 1681)^{2} \) Copy content Toggle raw display
$43$ \( (T^{8} - 111 T^{6} + \cdots + 450241)^{2} \) Copy content Toggle raw display
$47$ \( T^{16} + \cdots + 1210882360801 \) Copy content Toggle raw display
$53$ \( (T^{8} - 3 T^{7} + \cdots + 2595321)^{2} \) Copy content Toggle raw display
$59$ \( T^{16} + \cdots + 184062450625 \) Copy content Toggle raw display
$61$ \( (T^{8} + 10 T^{7} + \cdots + 3481)^{2} \) Copy content Toggle raw display
$67$ \( (T^{8} + 427 T^{6} + \cdots + 18139081)^{2} \) Copy content Toggle raw display
$71$ \( T^{16} + \cdots + 2750058481 \) Copy content Toggle raw display
$73$ \( (T^{8} + 25 T^{7} + \cdots + 4330561)^{2} \) Copy content Toggle raw display
$79$ \( T^{16} + \cdots + 471972192456241 \) Copy content Toggle raw display
$83$ \( T^{16} + \cdots + 23639287100625 \) Copy content Toggle raw display
$89$ \( (T^{2} + 10 T - 55)^{8} \) Copy content Toggle raw display
$97$ \( (T^{8} - 30 T^{7} + \cdots + 245025)^{2} \) Copy content Toggle raw display
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