Properties

Label 4704.2.b.a
Level $4704$
Weight $2$
Character orbit 4704.b
Analytic conductor $37.562$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $2$

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Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [4704,2,Mod(1567,4704)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(4704, base_ring=CyclotomicField(2))
 
chi = DirichletCharacter(H, H._module([1, 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("4704.1567");
 
S:= CuspForms(chi, 2);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 4704 = 2^{5} \cdot 3 \cdot 7^{2} \)
Weight: \( k \) \(=\) \( 2 \)
Character orbit: \([\chi]\) \(=\) 4704.b (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: \(37.5616291108\)
Analytic rank: \(0\)
Dimension: \(8\)
Coefficient field: \(\Q(\zeta_{16})\)
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 1 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{11}]\)
Coefficient ring index: \( 2^{5} \)
Twist minimal: yes
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.

\(f(q)\) \(=\) \( q - q^{3} + (\beta_{3} + \beta_{2}) q^{5} + q^{9}+O(q^{10}) \) Copy content Toggle raw display \( q - q^{3} + (\beta_{3} + \beta_{2}) q^{5} + q^{9} + ( - \beta_{4} - \beta_{3} - \beta_{2}) q^{11} + (2 \beta_{4} + 2 \beta_{3} + \beta_{2}) q^{13} + ( - \beta_{3} - \beta_{2}) q^{15} + (\beta_{3} + \beta_{2}) q^{17} + (\beta_{7} - 2 \beta_{5}) q^{19} + (\beta_{4} - \beta_{3} - \beta_{2} + \beta_1) q^{23} + ( - 2 \beta_{6} - \beta_{5} + 1) q^{25} - q^{27} + ( - \beta_{7} + \beta_{5} - 2) q^{29} + ( - 3 \beta_{6} - 2 \beta_{5}) q^{31} + (\beta_{4} + \beta_{3} + \beta_{2}) q^{33} + ( - 2 \beta_{7} + 2 \beta_{6} - \beta_{5}) q^{37} + ( - 2 \beta_{4} - 2 \beta_{3} - \beta_{2}) q^{39} + (\beta_{4} - 5 \beta_{3} + \cdots - \beta_1) q^{41}+ \cdots + ( - \beta_{4} - \beta_{3} - \beta_{2}) q^{99}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q - 8 q^{3} + 8 q^{9}+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 8 q^{3} + 8 q^{9} + 8 q^{25} - 8 q^{27} - 16 q^{29} - 16 q^{47} - 16 q^{53} + 32 q^{55} + 48 q^{59} - 48 q^{65} - 8 q^{75} + 8 q^{81} + 64 q^{83} - 32 q^{85} + 16 q^{87}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring

\(\beta_{1}\)\(=\) \( 2\zeta_{16}^{4} \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( \zeta_{16}^{5} + \zeta_{16}^{3} \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( \zeta_{16}^{6} + \zeta_{16}^{2} \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( \zeta_{16}^{7} + \zeta_{16} \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( -\zeta_{16}^{6} + \zeta_{16}^{2} \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( -\zeta_{16}^{7} - \zeta_{16}^{5} + \zeta_{16}^{3} + \zeta_{16} \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( -\zeta_{16}^{7} + \zeta_{16}^{5} - \zeta_{16}^{3} + \zeta_{16} \) Copy content Toggle raw display
\(\zeta_{16}\)\(=\) \( ( \beta_{7} + \beta_{6} + 2\beta_{4} ) / 4 \) Copy content Toggle raw display
\(\zeta_{16}^{2}\)\(=\) \( ( \beta_{5} + \beta_{3} ) / 2 \) Copy content Toggle raw display
\(\zeta_{16}^{3}\)\(=\) \( ( -\beta_{7} + \beta_{6} + 2\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\zeta_{16}^{4}\)\(=\) \( ( \beta_1 ) / 2 \) Copy content Toggle raw display
\(\zeta_{16}^{5}\)\(=\) \( ( \beta_{7} - \beta_{6} + 2\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\zeta_{16}^{6}\)\(=\) \( ( -\beta_{5} + \beta_{3} ) / 2 \) Copy content Toggle raw display
\(\zeta_{16}^{7}\)\(=\) \( ( -\beta_{7} - \beta_{6} + 2\beta_{4} ) / 4 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/4704\mathbb{Z}\right)^\times\).

\(n\) \(1471\) \(1765\) \(3137\) \(4609\)
\(\chi(n)\) \(-1\) \(1\) \(1\) \(-1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1567.1
0.923880 0.382683i
−0.382683 + 0.923880i
0.382683 0.923880i
−0.923880 0.382683i
−0.923880 + 0.382683i
0.382683 + 0.923880i
−0.382683 0.923880i
0.923880 + 0.382683i
0 −1.00000 0 3.26197i 0 0 0 1.00000 0
1567.2 0 −1.00000 0 2.17958i 0 0 0 1.00000 0
1567.3 0 −1.00000 0 0.648847i 0 0 0 1.00000 0
1567.4 0 −1.00000 0 0.433546i 0 0 0 1.00000 0
1567.5 0 −1.00000 0 0.433546i 0 0 0 1.00000 0
1567.6 0 −1.00000 0 0.648847i 0 0 0 1.00000 0
1567.7 0 −1.00000 0 2.17958i 0 0 0 1.00000 0
1567.8 0 −1.00000 0 3.26197i 0 0 0 1.00000 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 1567.8
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
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 4704.2.b.a 8
4.b odd 2 1 4704.2.b.b yes 8
7.b odd 2 1 4704.2.b.b yes 8
28.d even 2 1 inner 4704.2.b.a 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
4704.2.b.a 8 1.a even 1 1 trivial
4704.2.b.a 8 28.d even 2 1 inner
4704.2.b.b yes 8 4.b odd 2 1
4704.2.b.b yes 8 7.b odd 2 1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{2}^{\mathrm{new}}(4704, [\chi])\):

\( T_{5}^{8} + 16T_{5}^{6} + 60T_{5}^{4} + 32T_{5}^{2} + 4 \) Copy content Toggle raw display
\( T_{19}^{4} - 24T_{19}^{2} - 32T_{19} + 8 \) Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T^{8} \) Copy content Toggle raw display
$3$ \( (T + 1)^{8} \) Copy content Toggle raw display
$5$ \( T^{8} + 16 T^{6} + \cdots + 4 \) Copy content Toggle raw display
$7$ \( T^{8} \) Copy content Toggle raw display
$11$ \( T^{8} + 24 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$13$ \( T^{8} + 72 T^{6} + \cdots + 4 \) Copy content Toggle raw display
$17$ \( T^{8} + 16 T^{6} + \cdots + 4 \) Copy content Toggle raw display
$19$ \( (T^{4} - 24 T^{2} - 32 T + 8)^{2} \) Copy content Toggle raw display
$23$ \( T^{8} + 40 T^{6} + \cdots + 16 \) Copy content Toggle raw display
$29$ \( (T^{4} + 8 T^{3} + 12 T^{2} - 4)^{2} \) Copy content Toggle raw display
$31$ \( (T^{4} - 88 T^{2} + \cdots + 136)^{2} \) Copy content Toggle raw display
$37$ \( (T^{4} - 68 T^{2} + \cdots + 388)^{2} \) Copy content Toggle raw display
$41$ \( T^{8} + 256 T^{6} + \cdots + 1110916 \) Copy content Toggle raw display
$43$ \( T^{8} + 80 T^{6} + \cdots + 256 \) Copy content Toggle raw display
$47$ \( (T^{4} + 8 T^{3} + \cdots - 904)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 8 T^{3} + \cdots - 496)^{2} \) Copy content Toggle raw display
$59$ \( (T^{4} - 24 T^{3} + \cdots - 776)^{2} \) Copy content Toggle raw display
$61$ \( T^{8} + 392 T^{6} + \cdots + 62948356 \) Copy content Toggle raw display
$67$ \( T^{8} + 128 T^{6} + \cdots + 16384 \) Copy content Toggle raw display
$71$ \( T^{8} + 344 T^{6} + \cdots + 3429904 \) Copy content Toggle raw display
$73$ \( T^{8} + 200 T^{6} + \cdots + 4726276 \) Copy content Toggle raw display
$79$ \( T^{8} + 144 T^{6} + \cdots + 73984 \) Copy content Toggle raw display
$83$ \( (T^{4} - 32 T^{3} + \cdots + 1504)^{2} \) Copy content Toggle raw display
$89$ \( T^{8} + 80 T^{6} + \cdots + 8836 \) Copy content Toggle raw display
$97$ \( T^{8} + 392 T^{6} + \cdots + 1156 \) Copy content Toggle raw display
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