# Properties

 Label 8640.2.a.o Level $8640$ Weight $2$ Character orbit 8640.a Self dual yes Analytic conductor $68.991$ Analytic rank $1$ Dimension $1$ CM no Inner twists $1$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [8640,2,Mod(1,8640)]

mf = mfinit([N,k,chi],0)

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(8640, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 0, 0, 0]))

N = Newforms(chi, 2, names="a")

//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code

chi := DirichletCharacter("8640.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$8640 = 2^{6} \cdot 3^{3} \cdot 5$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 8640.a (trivial)

## 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: yes Analytic conductor: $$68.9907473464$$ Analytic rank: $$1$$ Dimension: $$1$$ Coefficient field: $$\mathbb{Q}$$ Coefficient ring: $$\mathbb{Z}$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 1080) Fricke sign: $$1$$ Sato-Tate group: $\mathrm{SU}(2)$

## $q$-expansion

comment: q-expansion

sage: f.q_expansion() # note that sage often uses an isomorphic number field

gp: mfcoefs(f, 20)

 $$f(q)$$ $$=$$ $$q - q^{5}+O(q^{10})$$ q - q^5 $$q - q^{5} - 2 q^{11} + 3 q^{17} + q^{19} + 3 q^{23} + q^{25} - 4 q^{29} - 5 q^{31} - 10 q^{37} + 6 q^{41} + 6 q^{43} + 8 q^{47} - 7 q^{49} - 3 q^{53} + 2 q^{55} - 5 q^{61} + 2 q^{67} + 2 q^{71} + 6 q^{73} - 11 q^{79} - 9 q^{83} - 3 q^{85} + 10 q^{89} - q^{95} + 8 q^{97}+O(q^{100})$$ q - q^5 - 2 * q^11 + 3 * q^17 + q^19 + 3 * q^23 + q^25 - 4 * q^29 - 5 * q^31 - 10 * q^37 + 6 * q^41 + 6 * q^43 + 8 * q^47 - 7 * q^49 - 3 * q^53 + 2 * q^55 - 5 * q^61 + 2 * q^67 + 2 * q^71 + 6 * q^73 - 11 * q^79 - 9 * q^83 - 3 * q^85 + 10 * q^89 - q^95 + 8 * q^97

## 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   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
1.1
 0
0 0 0 −1.00000 0 0 0 0 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

$$p$$ Sign
$$2$$ $$1$$
$$3$$ $$1$$
$$5$$ $$1$$

## Inner twists

This newform does not admit any (nontrivial) inner twists.

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 8640.2.a.o 1
3.b odd 2 1 8640.2.a.bt 1
4.b odd 2 1 8640.2.a.p 1
8.b even 2 1 1080.2.a.j yes 1
8.d odd 2 1 2160.2.a.r 1
12.b even 2 1 8640.2.a.bs 1
24.f even 2 1 2160.2.a.f 1
24.h odd 2 1 1080.2.a.d 1
40.f even 2 1 5400.2.a.x 1
40.i odd 4 2 5400.2.f.r 2
72.j odd 6 2 3240.2.q.s 2
72.n even 6 2 3240.2.q.e 2
120.i odd 2 1 5400.2.a.w 1
120.w even 4 2 5400.2.f.j 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1080.2.a.d 1 24.h odd 2 1
1080.2.a.j yes 1 8.b even 2 1
2160.2.a.f 1 24.f even 2 1
2160.2.a.r 1 8.d odd 2 1
3240.2.q.e 2 72.n even 6 2
3240.2.q.s 2 72.j odd 6 2
5400.2.a.w 1 120.i odd 2 1
5400.2.a.x 1 40.f even 2 1
5400.2.f.j 2 120.w even 4 2
5400.2.f.r 2 40.i odd 4 2
8640.2.a.o 1 1.a even 1 1 trivial
8640.2.a.p 1 4.b odd 2 1
8640.2.a.bs 1 12.b even 2 1
8640.2.a.bt 1 3.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 $$S_{2}^{\mathrm{new}}(\Gamma_0(8640))$$:

 $$T_{7}$$ T7 $$T_{11} + 2$$ T11 + 2 $$T_{13}$$ T13 $$T_{17} - 3$$ T17 - 3 $$T_{19} - 1$$ T19 - 1

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T$$
$3$ $$T$$
$5$ $$T + 1$$
$7$ $$T$$
$11$ $$T + 2$$
$13$ $$T$$
$17$ $$T - 3$$
$19$ $$T - 1$$
$23$ $$T - 3$$
$29$ $$T + 4$$
$31$ $$T + 5$$
$37$ $$T + 10$$
$41$ $$T - 6$$
$43$ $$T - 6$$
$47$ $$T - 8$$
$53$ $$T + 3$$
$59$ $$T$$
$61$ $$T + 5$$
$67$ $$T - 2$$
$71$ $$T - 2$$
$73$ $$T - 6$$
$79$ $$T + 11$$
$83$ $$T + 9$$
$89$ $$T - 10$$
$97$ $$T - 8$$