Properties

Label 720.4.x.e
Level $720$
Weight $4$
Character orbit 720.x
Analytic conductor $42.481$
Analytic rank $0$
Dimension $8$
CM no
Inner twists $8$

Related objects

Downloads

Learn more

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms
 
[N,k,chi] = [720,4,Mod(127,720)]
 
mf = mfinit([N,k,chi],0)
 
lf = mfeigenbasis(mf)
 
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(720, base_ring=CyclotomicField(4))
 
chi = DirichletCharacter(H, H._module([2, 0, 0, 1]))
 
N = Newforms(chi, 4, names="a")
 
//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code
 
chi := DirichletCharacter("720.127");
 
S:= CuspForms(chi, 4);
 
N := Newforms(S);
 
Level: \( N \) \(=\) \( 720 = 2^{4} \cdot 3^{2} \cdot 5 \)
Weight: \( k \) \(=\) \( 4 \)
Character orbit: \([\chi]\) \(=\) 720.x (of order \(4\), degree \(2\), 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: \(42.4813752041\)
Analytic rank: \(0\)
Dimension: \(8\)
Relative dimension: \(4\) over \(\Q(i)\)
Coefficient field: 8.0.1595395317760000.31
comment: defining polynomial
 
gp: f.mod \\ as an extension of the character field
 
Defining polynomial: \( x^{8} + 487x^{4} + 194481 \) Copy content Toggle raw display
Coefficient ring: \(\Z[a_1, \ldots, a_{17}]\)
Coefficient ring index: \( 2^{6}\cdot 5^{2} \)
Twist minimal: yes
Sato-Tate group: $\mathrm{SU}(2)[C_{4}]$

$q$-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.

\(f(q)\) \(=\) \( q + (3 \beta_{3} + 4 \beta_1) q^{5} + \beta_{4} q^{7}+O(q^{10}) \) Copy content Toggle raw display \( q + (3 \beta_{3} + 4 \beta_1) q^{5} + \beta_{4} q^{7} - \beta_{6} q^{11} + ( - 42 \beta_{2} - 42) q^{13} - 22 \beta_1 q^{17} + ( - \beta_{5} - \beta_{4}) q^{19} + (\beta_{7} - \beta_{6}) q^{23} + ( - 35 \beta_{2} - 120) q^{25} + ( - 49 \beta_{3} - 49 \beta_1) q^{29} + (6 \beta_{5} - 6 \beta_{4}) q^{31} + ( - 4 \beta_{7} + 3 \beta_{6}) q^{35} + ( - 146 \beta_{2} + 146) q^{37} + (126 \beta_{3} - 126 \beta_1) q^{41} - 14 \beta_{5} q^{43} + (7 \beta_{7} + 7 \beta_{6}) q^{47} + 447 \beta_{2} q^{49} - 28 \beta_{3} q^{53} + (15 \beta_{5} + 20 \beta_{4}) q^{55} - 7 \beta_{7} q^{59} + 322 q^{61} + (42 \beta_{3} - 294 \beta_1) q^{65} + 14 \beta_{4} q^{67} - 8 \beta_{6} q^{71} + (63 \beta_{2} + 63) q^{73} - 790 \beta_1 q^{77} + ( - 28 \beta_{5} - 28 \beta_{4}) q^{79} + (7 \beta_{7} - 7 \beta_{6}) q^{83} + (440 \beta_{2} + 330) q^{85} + ( - 356 \beta_{3} - 356 \beta_1) q^{89} + (42 \beta_{5} - 42 \beta_{4}) q^{91} + (\beta_{7} - 7 \beta_{6}) q^{95} + (21 \beta_{2} - 21) q^{97}+O(q^{100}) \) Copy content Toggle raw display
\(\operatorname{Tr}(f)(q)\) \(=\) \( 8 q+O(q^{10}) \) Copy content Toggle raw display \( 8 q - 336 q^{13} - 960 q^{25} + 1168 q^{37} + 2576 q^{61} + 504 q^{73} + 2640 q^{85} - 168 q^{97}+O(q^{100}) \) Copy content Toggle raw display

Basis of coefficient ring in terms of a root \(\nu\) of \( x^{8} + 487x^{4} + 194481 \) : Copy content Toggle raw display

\(\beta_{1}\)\(=\) \( ( \nu^{5} + 151\nu ) / 777 \) Copy content Toggle raw display
\(\beta_{2}\)\(=\) \( ( \nu^{6} + 928\nu^{2} ) / 16317 \) Copy content Toggle raw display
\(\beta_{3}\)\(=\) \( ( -16\nu^{7} + 1469\nu^{3} ) / 342657 \) Copy content Toggle raw display
\(\beta_{4}\)\(=\) \( ( -37\nu^{6} + 882\nu^{4} - 1702\nu^{2} + 214767 ) / 16317 \) Copy content Toggle raw display
\(\beta_{5}\)\(=\) \( ( -37\nu^{6} - 882\nu^{4} - 1702\nu^{2} - 214767 ) / 16317 \) Copy content Toggle raw display
\(\beta_{6}\)\(=\) \( ( 290\nu^{7} + 2205\nu^{5} + 187535\nu^{3} + 3759525\nu ) / 342657 \) Copy content Toggle raw display
\(\beta_{7}\)\(=\) \( ( -290\nu^{7} + 2205\nu^{5} - 187535\nu^{3} + 3759525\nu ) / 342657 \) Copy content Toggle raw display
\(\nu\)\(=\) \( ( \beta_{7} + \beta_{6} - 10\beta_1 ) / 20 \) Copy content Toggle raw display
\(\nu^{2}\)\(=\) \( ( \beta_{5} + \beta_{4} + 74\beta_{2} ) / 4 \) Copy content Toggle raw display
\(\nu^{3}\)\(=\) \( ( -4\beta_{7} + 4\beta_{6} + 145\beta_{3} ) / 5 \) Copy content Toggle raw display
\(\nu^{4}\)\(=\) \( ( -37\beta_{5} + 37\beta_{4} - 974 ) / 4 \) Copy content Toggle raw display
\(\nu^{5}\)\(=\) \( ( -151\beta_{7} - 151\beta_{6} + 17050\beta_1 ) / 20 \) Copy content Toggle raw display
\(\nu^{6}\)\(=\) \( -232\beta_{5} - 232\beta_{4} - 851\beta_{2} \) Copy content Toggle raw display
\(\nu^{7}\)\(=\) \( ( -1469\beta_{7} + 1469\beta_{6} - 375070\beta_{3} ) / 20 \) Copy content Toggle raw display

Character values

We give the values of \(\chi\) on generators for \(\left(\mathbb{Z}/720\mathbb{Z}\right)^\times\).

\(n\) \(181\) \(271\) \(577\) \(641\)
\(\chi(n)\) \(1\) \(-1\) \(-\beta_{2}\) \(1\)

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   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
127.1
−2.35188 + 3.93302i
3.93302 2.35188i
2.35188 3.93302i
−3.93302 + 2.35188i
−2.35188 3.93302i
3.93302 + 2.35188i
2.35188 + 3.93302i
−3.93302 2.35188i
0 0 0 −1.58114 11.0680i 0 −19.8746 + 19.8746i 0 0 0
127.2 0 0 0 −1.58114 11.0680i 0 19.8746 19.8746i 0 0 0
127.3 0 0 0 1.58114 + 11.0680i 0 −19.8746 + 19.8746i 0 0 0
127.4 0 0 0 1.58114 + 11.0680i 0 19.8746 19.8746i 0 0 0
703.1 0 0 0 −1.58114 + 11.0680i 0 −19.8746 19.8746i 0 0 0
703.2 0 0 0 −1.58114 + 11.0680i 0 19.8746 + 19.8746i 0 0 0
703.3 0 0 0 1.58114 11.0680i 0 −19.8746 19.8746i 0 0 0
703.4 0 0 0 1.58114 11.0680i 0 19.8746 + 19.8746i 0 0 0
\(n\): e.g. 2-40 or 990-1000
Embeddings: e.g. 1-3 or 127.4
Significant digits:
Format:

Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
3.b odd 2 1 inner
4.b odd 2 1 inner
5.c odd 4 1 inner
12.b even 2 1 inner
15.e even 4 1 inner
20.e even 4 1 inner
60.l odd 4 1 inner

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 720.4.x.e 8
3.b odd 2 1 inner 720.4.x.e 8
4.b odd 2 1 inner 720.4.x.e 8
5.c odd 4 1 inner 720.4.x.e 8
12.b even 2 1 inner 720.4.x.e 8
15.e even 4 1 inner 720.4.x.e 8
20.e even 4 1 inner 720.4.x.e 8
60.l odd 4 1 inner 720.4.x.e 8
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
720.4.x.e 8 1.a even 1 1 trivial
720.4.x.e 8 3.b odd 2 1 inner
720.4.x.e 8 4.b odd 2 1 inner
720.4.x.e 8 5.c odd 4 1 inner
720.4.x.e 8 12.b even 2 1 inner
720.4.x.e 8 15.e even 4 1 inner
720.4.x.e 8 20.e even 4 1 inner
720.4.x.e 8 60.l odd 4 1 inner

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on \(S_{4}^{\mathrm{new}}(720, [\chi])\):

\( T_{7}^{4} + 624100 \) Copy content Toggle raw display
\( T_{13}^{2} + 84T_{13} + 3528 \) Copy content Toggle raw display
\( T_{17}^{4} + 5856400 \) 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
$5$ \( (T^{4} + 240 T^{2} + 15625)^{2} \) Copy content Toggle raw display
$7$ \( (T^{4} + 624100)^{2} \) Copy content Toggle raw display
$11$ \( (T^{2} + 3950)^{4} \) Copy content Toggle raw display
$13$ \( (T^{2} + 84 T + 3528)^{4} \) Copy content Toggle raw display
$17$ \( (T^{4} + 5856400)^{2} \) Copy content Toggle raw display
$19$ \( (T^{2} - 1580)^{4} \) Copy content Toggle raw display
$23$ \( (T^{4} + 62410000)^{2} \) Copy content Toggle raw display
$29$ \( (T^{2} + 24010)^{4} \) Copy content Toggle raw display
$31$ \( (T^{2} + 56880)^{4} \) Copy content Toggle raw display
$37$ \( (T^{2} - 292 T + 42632)^{4} \) Copy content Toggle raw display
$41$ \( (T^{2} - 158760)^{4} \) Copy content Toggle raw display
$43$ \( (T^{4} + 23975425600)^{2} \) Copy content Toggle raw display
$47$ \( (T^{4} + 149846410000)^{2} \) Copy content Toggle raw display
$53$ \( (T^{4} + 15366400)^{2} \) Copy content Toggle raw display
$59$ \( (T^{2} - 193550)^{4} \) Copy content Toggle raw display
$61$ \( (T - 322)^{8} \) Copy content Toggle raw display
$67$ \( (T^{4} + 23975425600)^{2} \) Copy content Toggle raw display
$71$ \( (T^{2} + 252800)^{4} \) Copy content Toggle raw display
$73$ \( (T^{2} - 126 T + 7938)^{4} \) Copy content Toggle raw display
$79$ \( (T^{2} - 1238720)^{4} \) Copy content Toggle raw display
$83$ \( (T^{4} + 149846410000)^{2} \) Copy content Toggle raw display
$89$ \( (T^{2} + 1267360)^{4} \) Copy content Toggle raw display
$97$ \( (T^{2} + 42 T + 882)^{4} \) Copy content Toggle raw display
show more
show less