Properties

Label 1088.2.b.m
Level $1088$
Weight $2$
Character orbit 1088.b
Analytic conductor $8.688$
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] = [1088,2,Mod(577,1088)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1088, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([0, 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("1088.577");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 1088 = 2^{6} \cdot 17 \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 1088.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: \(8.68772373992\)
Analytic rank: \(0\)
Dimension: \(4\)
Coefficient field: 4.0.2048.2
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{4} + 4x^{2} + 2 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index: \( 2^{2} \)
Twist minimal: no (minimal twist has level 544)
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.

\(f(q)\) \(=\) \( q + \beta_{2} q^{3} + ( - \beta_{2} - \beta_1) q^{5} + \beta_1 q^{7} + ( - \beta_{3} - 1) q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q + \beta_{2} q^{3} + ( - \beta_{2} - \beta_1) q^{5} + \beta_1 q^{7} + ( - \beta_{3} - 1) q^{9} + \beta_{2} q^{11} + ( - \beta_{3} - 2) q^{13} + (2 \beta_{3} + 4) q^{15} + (\beta_{3} + \beta_{2} - \beta_1 + 1) q^{17} - 2 \beta_{3} q^{19} - \beta_{3} q^{21} + \beta_1 q^{23} + ( - 2 \beta_{3} - 3) q^{25} - 2 \beta_1 q^{27} + (3 \beta_{2} - \beta_1) q^{29} + (2 \beta_{2} + 3 \beta_1) q^{31} + ( - \beta_{3} - 4) q^{33} + 4 q^{35} + (\beta_{2} + \beta_1) q^{37} + ( - 4 \beta_{2} - 2 \beta_1) q^{39} + (2 \beta_{2} - 2 \beta_1) q^{41} + ( - 2 \beta_{3} - 4) q^{43} + (5 \beta_{2} + \beta_1) q^{45} + ( - 2 \beta_{3} - 4) q^{47} + (\beta_{3} + 3) q^{49} + (3 \beta_{2} + 2 \beta_1 - 4) q^{51} + 2 q^{53} + (2 \beta_{3} + 4) q^{55} + ( - 4 \beta_{2} - 4 \beta_1) q^{57} + (2 \beta_{3} - 4) q^{59} + ( - \beta_{2} - 5 \beta_1) q^{61} + ( - 2 \beta_{2} + \beta_1) q^{63} + (6 \beta_{2} + 2 \beta_1) q^{65} + (2 \beta_{3} + 8) q^{67} - \beta_{3} q^{69} + ( - 2 \beta_{2} - 5 \beta_1) q^{71} + 4 \beta_{2} q^{73} + ( - 7 \beta_{2} - 4 \beta_1) q^{75} - \beta_{3} q^{77} - 3 \beta_1 q^{79} + ( - \beta_{3} - 3) q^{81} + (2 \beta_{3} - 4) q^{83} + (2 \beta_{3} - 5 \beta_{2} - \beta_1) q^{85} + ( - 2 \beta_{3} - 12) q^{87} + ( - 3 \beta_{3} + 2) q^{89} - 2 \beta_{2} q^{91} + ( - 5 \beta_{3} - 8) q^{93} + 8 \beta_{2} q^{95} + ( - 6 \beta_{2} + 2 \beta_1) q^{97} + ( - 3 \beta_{2} - 2 \beta_1) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 4 q - 4 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 4 q - 4 q^{9} - 8 q^{13} + 16 q^{15} + 4 q^{17} - 12 q^{25} - 16 q^{33} + 16 q^{35} - 16 q^{43} - 16 q^{47} + 12 q^{49} - 16 q^{51} + 8 q^{53} + 16 q^{55} - 16 q^{59} + 32 q^{67} - 12 q^{81} - 16 q^{83} - 48 q^{87} + 8 q^{89} - 32 q^{93}+O(q^{100}) \) Copy content Toggle raw display

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

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

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/1088\mathbb{Z}\right)^\times\).

\(n\) \(69\) \(511\) \(513\)
\(\chi(n)\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
577.1
0.765367i
1.84776i
1.84776i
0.765367i
0 2.61313i 0 3.69552i 0 1.08239i 0 −3.82843 0
577.2 0 1.08239i 0 1.53073i 0 2.61313i 0 1.82843 0
577.3 0 1.08239i 0 1.53073i 0 2.61313i 0 1.82843 0
577.4 0 2.61313i 0 3.69552i 0 1.08239i 0 −3.82843 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 1088.2.b.m 4
4.b odd 2 1 1088.2.b.l 4
8.b even 2 1 544.2.b.e yes 4
8.d odd 2 1 544.2.b.d 4
17.b even 2 1 inner 1088.2.b.m 4
24.f even 2 1 4896.2.c.l 4
24.h odd 2 1 4896.2.c.m 4
68.d odd 2 1 1088.2.b.l 4
136.e odd 2 1 544.2.b.d 4
136.h even 2 1 544.2.b.e yes 4
136.i even 4 2 9248.2.a.bd 4
136.j odd 4 2 9248.2.a.be 4
408.b odd 2 1 4896.2.c.m 4
408.h even 2 1 4896.2.c.l 4
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
544.2.b.d 4 8.d odd 2 1
544.2.b.d 4 136.e odd 2 1
544.2.b.e yes 4 8.b even 2 1
544.2.b.e yes 4 136.h even 2 1
1088.2.b.l 4 4.b odd 2 1
1088.2.b.l 4 68.d odd 2 1
1088.2.b.m 4 1.a even 1 1 trivial
1088.2.b.m 4 17.b even 2 1 inner
4896.2.c.l 4 24.f even 2 1
4896.2.c.l 4 408.h even 2 1
4896.2.c.m 4 24.h odd 2 1
4896.2.c.m 4 408.b odd 2 1
9248.2.a.bd 4 136.i even 4 2
9248.2.a.be 4 136.j odd 4 2

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(1088, [\chi])\):

\( T_{3}^{4} + 8T_{3}^{2} + 8 \) Copy content Toggle raw display
\( T_{5}^{4} + 16T_{5}^{2} + 32 \) Copy content Toggle raw display
\( T_{19}^{2} - 32 \) Copy content Toggle raw display
\( T_{43}^{2} + 8T_{43} - 16 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{4} \) Copy content Toggle raw display
$3$ \( T^{4} + 8T^{2} + 8 \) Copy content Toggle raw display
$5$ \( T^{4} + 16T^{2} + 32 \) Copy content Toggle raw display
$7$ \( T^{4} + 8T^{2} + 8 \) Copy content Toggle raw display
$11$ \( T^{4} + 8T^{2} + 8 \) Copy content Toggle raw display
$13$ \( (T^{2} + 4 T - 4)^{2} \) Copy content Toggle raw display
$17$ \( T^{4} - 4 T^{3} + \cdots + 289 \) Copy content Toggle raw display
$19$ \( (T^{2} - 32)^{2} \) Copy content Toggle raw display
$23$ \( T^{4} + 8T^{2} + 8 \) Copy content Toggle raw display
$29$ \( T^{4} + 80T^{2} + 1568 \) Copy content Toggle raw display
$31$ \( T^{4} + 104T^{2} + 2312 \) Copy content Toggle raw display
$37$ \( T^{4} + 16T^{2} + 32 \) Copy content Toggle raw display
$41$ \( T^{4} + 64T^{2} + 512 \) Copy content Toggle raw display
$43$ \( (T^{2} + 8 T - 16)^{2} \) Copy content Toggle raw display
$47$ \( (T^{2} + 8 T - 16)^{2} \) Copy content Toggle raw display
$53$ \( (T - 2)^{4} \) Copy content Toggle raw display
$59$ \( (T^{2} + 8 T - 16)^{2} \) Copy content Toggle raw display
$61$ \( T^{4} + 208T^{2} + 9248 \) Copy content Toggle raw display
$67$ \( (T^{2} - 16 T + 32)^{2} \) Copy content Toggle raw display
$71$ \( T^{4} + 232 T^{2} + 13448 \) Copy content Toggle raw display
$73$ \( T^{4} + 128T^{2} + 2048 \) Copy content Toggle raw display
$79$ \( T^{4} + 72T^{2} + 648 \) Copy content Toggle raw display
$83$ \( (T^{2} + 8 T - 16)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} - 4 T - 68)^{2} \) Copy content Toggle raw display
$97$ \( T^{4} + 320 T^{2} + 25088 \) Copy content Toggle raw display
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