# Properties

 Label 520.2.q.d Level $520$ Weight $2$ Character orbit 520.q Analytic conductor $4.152$ Analytic rank $0$ Dimension $2$ Inner twists $2$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [520,2,Mod(81,520)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(520, base_ring=CyclotomicField(6))

chi = DirichletCharacter(H, H._module([0, 0, 0, 2]))

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

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

chi := DirichletCharacter("520.81");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$520 = 2^{3} \cdot 5 \cdot 13$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 520.q (of order $$3$$, 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: $$4.15222090511$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{-3})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - x + 1$$ x^2 - x + 1 Coefficient ring: $$\Z[a_1, a_2, a_3]$$ Coefficient ring index: $$1$$ Twist minimal: yes Sato-Tate group: $\mathrm{SU}(2)[C_{3}]$

## $q$-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 primitive root of unity $$\zeta_{6}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + ( - \zeta_{6} + 1) q^{3} + q^{5} + 3 \zeta_{6} q^{7} + 2 \zeta_{6} q^{9}+O(q^{10})$$ q + (-z + 1) * q^3 + q^5 + 3*z * q^7 + 2*z * q^9 $$q + ( - \zeta_{6} + 1) q^{3} + q^{5} + 3 \zeta_{6} q^{7} + 2 \zeta_{6} q^{9} + (5 \zeta_{6} - 5) q^{11} + (4 \zeta_{6} - 1) q^{13} + ( - \zeta_{6} + 1) q^{15} - 5 \zeta_{6} q^{17} + \zeta_{6} q^{19} + 3 q^{21} + ( - \zeta_{6} + 1) q^{23} + q^{25} + 5 q^{27} + ( - 9 \zeta_{6} + 9) q^{29} - 4 q^{31} + 5 \zeta_{6} q^{33} + 3 \zeta_{6} q^{35} + ( - 3 \zeta_{6} + 3) q^{37} + (\zeta_{6} + 3) q^{39} + ( - \zeta_{6} + 1) q^{41} + 3 \zeta_{6} q^{43} + 2 \zeta_{6} q^{45} - 8 q^{47} + (2 \zeta_{6} - 2) q^{49} - 5 q^{51} + 10 q^{53} + (5 \zeta_{6} - 5) q^{55} + q^{57} - 3 \zeta_{6} q^{59} - 7 \zeta_{6} q^{61} + (6 \zeta_{6} - 6) q^{63} + (4 \zeta_{6} - 1) q^{65} + ( - 9 \zeta_{6} + 9) q^{67} - \zeta_{6} q^{69} - 7 \zeta_{6} q^{71} + 10 q^{73} + ( - \zeta_{6} + 1) q^{75} - 15 q^{77} - 16 q^{79} + (\zeta_{6} - 1) q^{81} + 12 q^{83} - 5 \zeta_{6} q^{85} - 9 \zeta_{6} q^{87} + (15 \zeta_{6} - 15) q^{89} + (9 \zeta_{6} - 12) q^{91} + (4 \zeta_{6} - 4) q^{93} + \zeta_{6} q^{95} + 7 \zeta_{6} q^{97} - 10 q^{99} +O(q^{100})$$ q + (-z + 1) * q^3 + q^5 + 3*z * q^7 + 2*z * q^9 + (5*z - 5) * q^11 + (4*z - 1) * q^13 + (-z + 1) * q^15 - 5*z * q^17 + z * q^19 + 3 * q^21 + (-z + 1) * q^23 + q^25 + 5 * q^27 + (-9*z + 9) * q^29 - 4 * q^31 + 5*z * q^33 + 3*z * q^35 + (-3*z + 3) * q^37 + (z + 3) * q^39 + (-z + 1) * q^41 + 3*z * q^43 + 2*z * q^45 - 8 * q^47 + (2*z - 2) * q^49 - 5 * q^51 + 10 * q^53 + (5*z - 5) * q^55 + q^57 - 3*z * q^59 - 7*z * q^61 + (6*z - 6) * q^63 + (4*z - 1) * q^65 + (-9*z + 9) * q^67 - z * q^69 - 7*z * q^71 + 10 * q^73 + (-z + 1) * q^75 - 15 * q^77 - 16 * q^79 + (z - 1) * q^81 + 12 * q^83 - 5*z * q^85 - 9*z * q^87 + (15*z - 15) * q^89 + (9*z - 12) * q^91 + (4*z - 4) * q^93 + z * q^95 + 7*z * q^97 - 10 * q^99 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + q^{3} + 2 q^{5} + 3 q^{7} + 2 q^{9}+O(q^{10})$$ 2 * q + q^3 + 2 * q^5 + 3 * q^7 + 2 * q^9 $$2 q + q^{3} + 2 q^{5} + 3 q^{7} + 2 q^{9} - 5 q^{11} + 2 q^{13} + q^{15} - 5 q^{17} + q^{19} + 6 q^{21} + q^{23} + 2 q^{25} + 10 q^{27} + 9 q^{29} - 8 q^{31} + 5 q^{33} + 3 q^{35} + 3 q^{37} + 7 q^{39} + q^{41} + 3 q^{43} + 2 q^{45} - 16 q^{47} - 2 q^{49} - 10 q^{51} + 20 q^{53} - 5 q^{55} + 2 q^{57} - 3 q^{59} - 7 q^{61} - 6 q^{63} + 2 q^{65} + 9 q^{67} - q^{69} - 7 q^{71} + 20 q^{73} + q^{75} - 30 q^{77} - 32 q^{79} - q^{81} + 24 q^{83} - 5 q^{85} - 9 q^{87} - 15 q^{89} - 15 q^{91} - 4 q^{93} + q^{95} + 7 q^{97} - 20 q^{99}+O(q^{100})$$ 2 * q + q^3 + 2 * q^5 + 3 * q^7 + 2 * q^9 - 5 * q^11 + 2 * q^13 + q^15 - 5 * q^17 + q^19 + 6 * q^21 + q^23 + 2 * q^25 + 10 * q^27 + 9 * q^29 - 8 * q^31 + 5 * q^33 + 3 * q^35 + 3 * q^37 + 7 * q^39 + q^41 + 3 * q^43 + 2 * q^45 - 16 * q^47 - 2 * q^49 - 10 * q^51 + 20 * q^53 - 5 * q^55 + 2 * q^57 - 3 * q^59 - 7 * q^61 - 6 * q^63 + 2 * q^65 + 9 * q^67 - q^69 - 7 * q^71 + 20 * q^73 + q^75 - 30 * q^77 - 32 * q^79 - q^81 + 24 * q^83 - 5 * q^85 - 9 * q^87 - 15 * q^89 - 15 * q^91 - 4 * q^93 + q^95 + 7 * q^97 - 20 * q^99

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/520\mathbb{Z}\right)^\times$$.

 $$n$$ $$41$$ $$261$$ $$391$$ $$417$$ $$\chi(n)$$ $$-\zeta_{6}$$ $$1$$ $$1$$ $$1$$

## 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   $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
81.1
 0.5 − 0.866025i 0.5 + 0.866025i
0 0.500000 + 0.866025i 0 1.00000 0 1.50000 2.59808i 0 1.00000 1.73205i 0
321.1 0 0.500000 0.866025i 0 1.00000 0 1.50000 + 2.59808i 0 1.00000 + 1.73205i 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Inner twists

Char Parity Ord Mult Type
1.a even 1 1 trivial
13.c even 3 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 520.2.q.d 2
4.b odd 2 1 1040.2.q.g 2
13.c even 3 1 inner 520.2.q.d 2
13.c even 3 1 6760.2.a.f 1
13.e even 6 1 6760.2.a.e 1
52.j odd 6 1 1040.2.q.g 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
520.2.q.d 2 1.a even 1 1 trivial
520.2.q.d 2 13.c even 3 1 inner
1040.2.q.g 2 4.b odd 2 1
1040.2.q.g 2 52.j odd 6 1
6760.2.a.e 1 13.e even 6 1
6760.2.a.f 1 13.c even 3 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(520, [\chi])$$:

 $$T_{3}^{2} - T_{3} + 1$$ T3^2 - T3 + 1 $$T_{11}^{2} + 5T_{11} + 25$$ T11^2 + 5*T11 + 25

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2}$$
$3$ $$T^{2} - T + 1$$
$5$ $$(T - 1)^{2}$$
$7$ $$T^{2} - 3T + 9$$
$11$ $$T^{2} + 5T + 25$$
$13$ $$T^{2} - 2T + 13$$
$17$ $$T^{2} + 5T + 25$$
$19$ $$T^{2} - T + 1$$
$23$ $$T^{2} - T + 1$$
$29$ $$T^{2} - 9T + 81$$
$31$ $$(T + 4)^{2}$$
$37$ $$T^{2} - 3T + 9$$
$41$ $$T^{2} - T + 1$$
$43$ $$T^{2} - 3T + 9$$
$47$ $$(T + 8)^{2}$$
$53$ $$(T - 10)^{2}$$
$59$ $$T^{2} + 3T + 9$$
$61$ $$T^{2} + 7T + 49$$
$67$ $$T^{2} - 9T + 81$$
$71$ $$T^{2} + 7T + 49$$
$73$ $$(T - 10)^{2}$$
$79$ $$(T + 16)^{2}$$
$83$ $$(T - 12)^{2}$$
$89$ $$T^{2} + 15T + 225$$
$97$ $$T^{2} - 7T + 49$$