Properties

Label 2016.3.f.b
Level $2016$
Weight $3$
Character orbit 2016.f
Analytic conductor $54.932$
Analytic rank $0$
Dimension $8$
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] = [2016,3,Mod(1441,2016)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(2016, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 0, 0, 1]))
 
N = Newforms(chi, 3, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("2016.1441");
 
S:= CuspForms(chi, 3);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 2016 = 2^{5} \cdot 3^{2} \cdot 7 \)
Weight: \( k \) \(=\) \( 3 \)
Character orbit: \([\chi]\) \(=\) 2016.f (of order \(2\), degree \(1\), 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: \(54.9320212950\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\mathbb{Q}[x]/(x^{8} + \cdots)\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 20x^{6} + 116x^{4} + 180x^{2} + 81 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{9} \)
Twist minimal: no (minimal twist has level 224)
Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

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

\(f(q)\) \(=\) \( q + \beta_{5} q^{5} + (\beta_{6} - \beta_{2}) q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{5} q^{5} + (\beta_{6} - \beta_{2}) q^{7} + (\beta_{6} - \beta_{3} - \beta_{2}) q^{11} + (\beta_{5} + \beta_1) q^{13} + \beta_1 q^{17} + ( - 3 \beta_{7} + 3 \beta_{6} - 2 \beta_{2}) q^{19} + ( - 2 \beta_{7} - \beta_{6} + \cdots + \beta_{2}) q^{23}+ \cdots + (4 \beta_{5} - 7 \beta_1) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 56 q^{25} - 16 q^{29} - 48 q^{37} + 136 q^{49} - 272 q^{53} - 192 q^{65} + 208 q^{77} + 64 q^{85}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 20x^{6} + 116x^{4} + 180x^{2} + 81 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( 4\nu^{7} + 80\nu^{5} + 464\nu^{3} + 828\nu ) / 27 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( 7\nu^{7} + 131\nu^{5} + 659\nu^{3} + 567\nu ) / 27 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -5\nu^{7} - 9\nu^{6} - 91\nu^{5} - 153\nu^{4} - 427\nu^{3} - 585\nu^{2} - 261\nu - 54 ) / 27 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( 2\nu^{6} + 40\nu^{4} + 214\nu^{2} + 180 ) / 9 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -13\nu^{7} - 251\nu^{5} - 1301\nu^{3} - 1107\nu ) / 27 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 2\nu^{7} + 15\nu^{6} + 40\nu^{5} + 273\nu^{4} + 232\nu^{3} + 1335\nu^{2} + 306\nu + 1134 ) / 27 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( 5\nu^{7} + 15\nu^{6} + 91\nu^{5} + 273\nu^{4} + 427\nu^{3} + 1335\nu^{2} + 261\nu + 1134 ) / 27 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} - \beta_{6} - \beta_{2} + \beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{7} - \beta_{4} + \beta_{3} - 20 ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -13\beta_{7} + 13\beta_{6} + 4\beta_{5} + 17\beta_{2} - 7\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -6\beta_{7} - \beta_{6} + 10\beta_{4} - 5\beta_{3} + \beta_{2} + 84 ) / 2 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( 123\beta_{7} - 123\beta_{6} - 68\beta_{5} - 215\beta_{2} + 63\beta_1 ) / 8 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( ( 133\beta_{7} + 40\beta_{6} - 275\beta_{4} + 93\beta_{3} - 40\beta_{2} - 1580 ) / 4 \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -1159\beta_{7} + 1159\beta_{6} + 896\beta_{5} + 2535\beta_{2} - 601\beta_1 ) / 8 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/2016\mathbb{Z}\right)^\times\).

\(n\) \(127\) \(577\) \(1765\) \(1793\)
\(\chi(n)\) \(1\) \(-1\) \(1\) \(1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1441.1
3.24994i
0.923094i
1.10555i
2.71359i
1.10555i
2.71359i
3.24994i
0.923094i
0 0 0 5.90156i 0 −6.86601 1.36303i 0 0 0
1441.2 0 0 0 5.90156i 0 6.86601 + 1.36303i 0 0 0
1441.3 0 0 0 5.40107i 0 −4.34256 5.49019i 0 0 0
1441.4 0 0 0 5.40107i 0 4.34256 + 5.49019i 0 0 0
1441.5 0 0 0 5.40107i 0 −4.34256 + 5.49019i 0 0 0
1441.6 0 0 0 5.40107i 0 4.34256 5.49019i 0 0 0
1441.7 0 0 0 5.90156i 0 −6.86601 + 1.36303i 0 0 0
1441.8 0 0 0 5.90156i 0 6.86601 1.36303i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1441.8
Significant digits:
Format:

Inner twists

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

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 2016.3.f.b 8
3.b odd 2 1 224.3.c.b 8
4.b odd 2 1 inner 2016.3.f.b 8
7.b odd 2 1 inner 2016.3.f.b 8
12.b even 2 1 224.3.c.b 8
21.c even 2 1 224.3.c.b 8
24.f even 2 1 448.3.c.h 8
24.h odd 2 1 448.3.c.h 8
28.d even 2 1 inner 2016.3.f.b 8
84.h odd 2 1 224.3.c.b 8
168.e odd 2 1 448.3.c.h 8
168.i even 2 1 448.3.c.h 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
224.3.c.b 8 3.b odd 2 1
224.3.c.b 8 12.b even 2 1
224.3.c.b 8 21.c even 2 1
224.3.c.b 8 84.h odd 2 1
448.3.c.h 8 24.f even 2 1
448.3.c.h 8 24.h odd 2 1
448.3.c.h 8 168.e odd 2 1
448.3.c.h 8 168.i even 2 1
2016.3.f.b 8 1.a even 1 1 trivial
2016.3.f.b 8 4.b odd 2 1 inner
2016.3.f.b 8 7.b odd 2 1 inner
2016.3.f.b 8 28.d even 2 1 inner

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{5}^{4} + 64T_{5}^{2} + 1016 \) acting on \(S_{3}^{\mathrm{new}}(2016, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( T^{8} \) Copy content Toggle raw display
$5$ \( (T^{4} + 64 T^{2} + 1016)^{2} \) Copy content Toggle raw display
$7$ \( T^{8} - 68 T^{6} + \cdots + 5764801 \) Copy content Toggle raw display
$11$ \( (T^{4} - 472 T^{2} + 14224)^{2} \) Copy content Toggle raw display
$13$ \( (T^{4} + 544 T^{2} + 49784)^{2} \) Copy content Toggle raw display
$17$ \( (T^{4} + 512 T^{2} + 65024)^{2} \) Copy content Toggle raw display
$19$ \( (T^{4} + 1072 T^{2} + 123704)^{2} \) Copy content Toggle raw display
$23$ \( (T^{4} - 1112 T^{2} + 14224)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 4 T - 284)^{4} \) Copy content Toggle raw display
$31$ \( (T^{4} + 4096 T^{2} + 1895936)^{2} \) Copy content Toggle raw display
$37$ \( (T^{2} + 12 T - 1532)^{4} \) Copy content Toggle raw display
$41$ \( (T^{4} + 4736 T^{2} + 16256)^{2} \) Copy content Toggle raw display
$43$ \( (T^{4} - 1112 T^{2} + 14224)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 2944 T^{2} + 3584)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} + 68 T + 644)^{4} \) Copy content Toggle raw display
$59$ \( (T^{4} + 6064 T^{2} + 2784824)^{2} \) Copy content Toggle raw display
$61$ \( (T^{4} + 7744 T^{2} + 14875256)^{2} \) Copy content Toggle raw display
$67$ \( (T^{4} - 15064 T^{2} + 34151824)^{2} \) Copy content Toggle raw display
$71$ \( (T^{4} - 8648 T^{2} + 696976)^{2} \) Copy content Toggle raw display
$73$ \( (T^{4} + 6336 T^{2} + 1316736)^{2} \) Copy content Toggle raw display
$79$ \( (T^{4} - 17352 T^{2} + 71703184)^{2} \) Copy content Toggle raw display
$83$ \( (T^{4} + 8912 T^{2} + 9367736)^{2} \) Copy content Toggle raw display
$89$ \( (T^{4} + 13376 T^{2} + 39030656)^{2} \) Copy content Toggle raw display
$97$ \( (T^{4} + 27008 T^{2} + 143638016)^{2} \) Copy content Toggle raw display
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