# Properties

 Label 3864.2.a.c Level $3864$ Weight $2$ Character orbit 3864.a Self dual yes Analytic conductor $30.854$ 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] = [3864,2,Mod(1,3864)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(3864, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 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("3864.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$3864 = 2^{3} \cdot 3 \cdot 7 \cdot 23$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 3864.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: $$30.8541953410$$ Analytic rank: $$1$$ Dimension: $$1$$ Coefficient field: $$\mathbb{Q}$$ Coefficient ring: $$\mathbb{Z}$$ Coefficient ring index: $$1$$ Twist minimal: yes 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)

 $$f(q)$$ $$=$$ $$q + q^{3} - q^{7} + q^{9}+O(q^{10})$$ q + q^3 - q^7 + q^9 $$q + q^{3} - q^{7} + q^{9} + q^{11} - 6 q^{13} + 7 q^{19} - q^{21} + q^{23} - 5 q^{25} + q^{27} - 10 q^{29} - 10 q^{31} + q^{33} + 6 q^{37} - 6 q^{39} - 5 q^{41} + 4 q^{43} - q^{47} + q^{49} - 3 q^{53} + 7 q^{57} - 3 q^{59} + 9 q^{61} - q^{63} - 4 q^{67} + q^{69} - 12 q^{71} - 4 q^{73} - 5 q^{75} - q^{77} - 2 q^{79} + q^{81} + 2 q^{83} - 10 q^{87} + 18 q^{89} + 6 q^{91} - 10 q^{93} - 6 q^{97} + q^{99}+O(q^{100})$$ q + q^3 - q^7 + q^9 + q^11 - 6 * q^13 + 7 * q^19 - q^21 + q^23 - 5 * q^25 + q^27 - 10 * q^29 - 10 * q^31 + q^33 + 6 * q^37 - 6 * q^39 - 5 * q^41 + 4 * q^43 - q^47 + q^49 - 3 * q^53 + 7 * q^57 - 3 * q^59 + 9 * q^61 - q^63 - 4 * q^67 + q^69 - 12 * q^71 - 4 * q^73 - 5 * q^75 - q^77 - 2 * q^79 + q^81 + 2 * q^83 - 10 * q^87 + 18 * q^89 + 6 * q^91 - 10 * q^93 - 6 * q^97 + q^99

## 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 1.00000 0 0 0 −1.00000 0 1.00000 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
$$2$$ $$+1$$
$$3$$ $$-1$$
$$7$$ $$+1$$
$$23$$ $$-1$$

## 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 3864.2.a.c 1
4.b odd 2 1 7728.2.a.f 1

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3864.2.a.c 1 1.a even 1 1 trivial
7728.2.a.f 1 4.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 $$S_{2}^{\mathrm{new}}(\Gamma_0(3864))$$:

 $$T_{5}$$ T5 $$T_{11} - 1$$ T11 - 1

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T$$
$3$ $$T - 1$$
$5$ $$T$$
$7$ $$T + 1$$
$11$ $$T - 1$$
$13$ $$T + 6$$
$17$ $$T$$
$19$ $$T - 7$$
$23$ $$T - 1$$
$29$ $$T + 10$$
$31$ $$T + 10$$
$37$ $$T - 6$$
$41$ $$T + 5$$
$43$ $$T - 4$$
$47$ $$T + 1$$
$53$ $$T + 3$$
$59$ $$T + 3$$
$61$ $$T - 9$$
$67$ $$T + 4$$
$71$ $$T + 12$$
$73$ $$T + 4$$
$79$ $$T + 2$$
$83$ $$T - 2$$
$89$ $$T - 18$$
$97$ $$T + 6$$