Properties

Label 1156.2.b.c
Level $1156$
Weight $2$
Character orbit 1156.b
Analytic conductor $9.231$
Analytic rank $0$
Dimension $4$
CM no
Inner twists $2$

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Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [1156,2,Mod(577,1156)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1156, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 1]))
 
N = Newforms(chi, 2, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("1156.577");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1156 = 2^{2} \cdot 17^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1156.b (of order \(2\), degree \(1\), not 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: \(9.23070647366\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: \(\Q(\zeta_{12})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} - x^{2} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{4} \)
Twist minimal: no (minimal twist has level 68)
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 \(1,\beta_1,\beta_2,\beta_3\) for the coefficient ring described below. We also show the integral \(q\)-expansion of the trace form.

\(f(q)\) \(=\) \( q - \beta_{2} q^{3} + (\beta_{2} + \beta_1) q^{5} - \beta_{2} q^{7} + (\beta_{3} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - \beta_{2} q^{3} + (\beta_{2} + \beta_1) q^{5} - \beta_{2} q^{7} + (\beta_{3} - 1) q^{9} + ( - \beta_{2} + 2 \beta_1) q^{11} + ( - \beta_{3} + 2) q^{13} + ( - \beta_{3} + 6) q^{15} + ( - \beta_{3} - 2) q^{19} + (\beta_{3} - 4) q^{21} + ( - \beta_{2} + 2 \beta_1) q^{23} - 7 q^{25} + (2 \beta_{2} - 2 \beta_1) q^{27} + ( - \beta_{2} - \beta_1) q^{29} + ( - \beta_{2} - 2 \beta_1) q^{31} + \beta_{3} q^{33} + ( - \beta_{3} + 6) q^{35} + ( - 3 \beta_{2} + 5 \beta_1) q^{37} + ( - 6 \beta_{2} + 2 \beta_1) q^{39} + ( - 3 \beta_{2} + 3 \beta_1) q^{41} + ( - 3 \beta_{3} - 2) q^{43} + ( - 7 \beta_{2} + 5 \beta_1) q^{45} + 2 \beta_{3} q^{47} + (\beta_{3} + 3) q^{49} + (2 \beta_{3} - 6) q^{53} + ( - 3 \beta_{3} - 6) q^{55} + ( - 2 \beta_{2} + 2 \beta_1) q^{57} + ( - \beta_{3} - 6) q^{59} + ( - \beta_{2} + 3 \beta_1) q^{61} + (5 \beta_{2} - 2 \beta_1) q^{63} + (8 \beta_{2} - 4 \beta_1) q^{65} + ( - 2 \beta_{3} + 8) q^{67} + \beta_{3} q^{69} + 3 \beta_{2} q^{71} + ( - \beta_{2} + \beta_1) q^{73} + 7 \beta_{2} q^{75} + \beta_{3} q^{77} + ( - 5 \beta_{2} + 2 \beta_1) q^{79} + (\beta_{3} + 1) q^{81} + (\beta_{3} + 6) q^{83} + (\beta_{3} - 6) q^{87} + (\beta_{3} + 6) q^{89} + ( - 6 \beta_{2} + 2 \beta_1) q^{91} + (\beta_{3} - 8) q^{93} + (4 \beta_{2} - 8 \beta_1) q^{95} + (\beta_{2} + 3 \beta_1) q^{97} + (\beta_{2} + 4 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 4 q^{9} + 8 q^{13} + 24 q^{15} - 8 q^{19} - 16 q^{21} - 28 q^{25} + 24 q^{35} - 8 q^{43} + 12 q^{49} - 24 q^{53} - 24 q^{55} - 24 q^{59} + 32 q^{67} + 4 q^{81} + 24 q^{83} - 24 q^{87} + 24 q^{89} - 32 q^{93}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( \zeta_{12}^{3} + 2\zeta_{12}^{2} - 1 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( -\zeta_{12}^{3} + 2\zeta_{12}^{2} - 1 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( -2\zeta_{12}^{3} + 4\zeta_{12} \) Copy content Toggle raw display
\(\zeta_{12}\)\(=\) \( ( \beta_{3} - \beta_{2} + \beta_1 ) / 4 \) Copy content Toggle raw display
\(\zeta_{12}^{2}\)\(=\) \( ( \beta_{2} + \beta _1 + 2 ) / 4 \) Copy content Toggle raw display
\(\zeta_{12}^{3}\)\(=\) \( ( -\beta_{2} + \beta_1 ) / 2 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1156\mathbb{Z}\right)^\times\).

\(n\) \(579\) \(581\)
\(\chi(n)\) \(1\) \(-1\)

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.

comment: embeddings in the coefficient field
 
gp: mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
577.1
−0.866025 0.500000i
0.866025 + 0.500000i
0.866025 0.500000i
−0.866025 + 0.500000i
0 2.73205i 0 3.46410i 0 2.73205i 0 −4.46410 0
577.2 0 0.732051i 0 3.46410i 0 0.732051i 0 2.46410 0
577.3 0 0.732051i 0 3.46410i 0 0.732051i 0 2.46410 0
577.4 0 2.73205i 0 3.46410i 0 2.73205i 0 −4.46410 0
\(n\): e.g. 2-40 or 990-1000
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
17.b even 2 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 1156.2.b.c 4
17.b even 2 1 inner 1156.2.b.c 4
17.c even 4 1 68.2.a.a 2
17.c even 4 1 1156.2.a.a 2
17.d even 8 4 1156.2.e.d 8
17.e odd 16 8 1156.2.h.f 16
51.f odd 4 1 612.2.a.e 2
68.f odd 4 1 272.2.a.e 2
68.f odd 4 1 4624.2.a.x 2
85.f odd 4 1 1700.2.e.c 4
85.i odd 4 1 1700.2.e.c 4
85.j even 4 1 1700.2.a.d 2
119.f odd 4 1 3332.2.a.h 2
136.i even 4 1 1088.2.a.p 2
136.j odd 4 1 1088.2.a.t 2
187.f odd 4 1 8228.2.a.k 2
204.l even 4 1 2448.2.a.y 2
340.n odd 4 1 6800.2.a.bh 2
408.q even 4 1 9792.2.a.cs 2
408.t odd 4 1 9792.2.a.cr 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
68.2.a.a 2 17.c even 4 1
272.2.a.e 2 68.f odd 4 1
612.2.a.e 2 51.f odd 4 1
1088.2.a.p 2 136.i even 4 1
1088.2.a.t 2 136.j odd 4 1
1156.2.a.a 2 17.c even 4 1
1156.2.b.c 4 1.a even 1 1 trivial
1156.2.b.c 4 17.b even 2 1 inner
1156.2.e.d 8 17.d even 8 4
1156.2.h.f 16 17.e odd 16 8
1700.2.a.d 2 85.j even 4 1
1700.2.e.c 4 85.f odd 4 1
1700.2.e.c 4 85.i odd 4 1
2448.2.a.y 2 204.l even 4 1
3332.2.a.h 2 119.f odd 4 1
4624.2.a.x 2 68.f odd 4 1
6800.2.a.bh 2 340.n odd 4 1
8228.2.a.k 2 187.f odd 4 1
9792.2.a.cr 2 408.t odd 4 1
9792.2.a.cs 2 408.q even 4 1

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3}^{4} + 8T_{3}^{2} + 4 \) acting on \(S_{2}^{\mathrm{new}}(1156, [\chi])\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 8T^{2} + 4 \) Copy content Toggle raw display
$5$ \( (T^{2} + 12)^{2} \) Copy content Toggle raw display
$7$ \( T^{4} + 8T^{2} + 4 \) Copy content Toggle raw display
$11$ \( T^{4} + 24T^{2} + 36 \) Copy content Toggle raw display
$13$ \( (T^{2} - 4 T - 8)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} \) Copy content Toggle raw display
$19$ \( (T^{2} + 4 T - 8)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} + 24T^{2} + 36 \) Copy content Toggle raw display
$29$ \( (T^{2} + 12)^{2} \) Copy content Toggle raw display
$31$ \( T^{4} + 56T^{2} + 676 \) Copy content Toggle raw display
$37$ \( T^{4} + 152T^{2} + 2704 \) Copy content Toggle raw display
$41$ \( (T^{2} + 36)^{2} \) Copy content Toggle raw display
$43$ \( (T^{2} + 4 T - 104)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} - 48)^{2} \) Copy content Toggle raw display
$53$ \( (T^{2} + 12 T - 12)^{2} \) Copy content Toggle raw display
$59$ \( (T^{2} + 12 T + 24)^{2} \) Copy content Toggle raw display
$61$ \( T^{4} + 56T^{2} + 16 \) Copy content Toggle raw display
$67$ \( (T^{2} - 16 T + 16)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + 72T^{2} + 324 \) Copy content Toggle raw display
$73$ \( (T^{2} + 4)^{2} \) Copy content Toggle raw display
$79$ \( T^{4} + 152T^{2} + 484 \) Copy content Toggle raw display
$83$ \( (T^{2} - 12 T + 24)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} - 12 T + 24)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 104T^{2} + 1936 \) Copy content Toggle raw display
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