# Properties

 Label 980.2.i.f Level $980$ Weight $2$ Character orbit 980.i Analytic conductor $7.825$ Analytic rank $0$ Dimension $2$ CM no Inner twists $2$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [980,2,Mod(361,980)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(980, base_ring=CyclotomicField(6))

chi = DirichletCharacter(H, H._module([0, 0, 4]))

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

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

chi := DirichletCharacter("980.361");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$980 = 2^{2} \cdot 5 \cdot 7^{2}$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 980.i (of order $$3$$, degree $$2$$, not 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: $$7.82533939809$$ 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: no (minimal twist has level 140) 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.

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

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/980\mathbb{Z}\right)^\times$$.

 $$n$$ $$101$$ $$197$$ $$491$$ $$\chi(n)$$ $$-\zeta_{6}$$ $$1$$ $$1$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
361.1
 0.5 + 0.866025i 0.5 − 0.866025i
0 0.500000 0.866025i 0 −0.500000 0.866025i 0 0 0 1.00000 + 1.73205i 0
961.1 0 0.500000 + 0.866025i 0 −0.500000 + 0.866025i 0 0 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
7.c even 3 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 980.2.i.f 2
7.b odd 2 1 140.2.i.a 2
7.c even 3 1 980.2.a.e 1
7.c even 3 1 inner 980.2.i.f 2
7.d odd 6 1 140.2.i.a 2
7.d odd 6 1 980.2.a.g 1
21.c even 2 1 1260.2.s.c 2
21.g even 6 1 1260.2.s.c 2
21.g even 6 1 8820.2.a.p 1
21.h odd 6 1 8820.2.a.a 1
28.d even 2 1 560.2.q.f 2
28.f even 6 1 560.2.q.f 2
28.f even 6 1 3920.2.a.k 1
28.g odd 6 1 3920.2.a.w 1
35.c odd 2 1 700.2.i.b 2
35.f even 4 2 700.2.r.a 4
35.i odd 6 1 700.2.i.b 2
35.i odd 6 1 4900.2.a.i 1
35.j even 6 1 4900.2.a.q 1
35.k even 12 2 700.2.r.a 4
35.k even 12 2 4900.2.e.m 2
35.l odd 12 2 4900.2.e.n 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
140.2.i.a 2 7.b odd 2 1
140.2.i.a 2 7.d odd 6 1
560.2.q.f 2 28.d even 2 1
560.2.q.f 2 28.f even 6 1
700.2.i.b 2 35.c odd 2 1
700.2.i.b 2 35.i odd 6 1
700.2.r.a 4 35.f even 4 2
700.2.r.a 4 35.k even 12 2
980.2.a.e 1 7.c even 3 1
980.2.a.g 1 7.d odd 6 1
980.2.i.f 2 1.a even 1 1 trivial
980.2.i.f 2 7.c even 3 1 inner
1260.2.s.c 2 21.c even 2 1
1260.2.s.c 2 21.g even 6 1
3920.2.a.k 1 28.f even 6 1
3920.2.a.w 1 28.g odd 6 1
4900.2.a.i 1 35.i odd 6 1
4900.2.a.q 1 35.j even 6 1
4900.2.e.m 2 35.k even 12 2
4900.2.e.n 2 35.l odd 12 2
8820.2.a.a 1 21.h odd 6 1
8820.2.a.p 1 21.g even 6 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(980, [\chi])$$:

 $$T_{3}^{2} - T_{3} + 1$$ T3^2 - T3 + 1 $$T_{11}^{2} + 6T_{11} + 36$$ T11^2 + 6*T11 + 36

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2}$$
$3$ $$T^{2} - T + 1$$
$5$ $$T^{2} + T + 1$$
$7$ $$T^{2}$$
$11$ $$T^{2} + 6T + 36$$
$13$ $$(T + 2)^{2}$$
$17$ $$T^{2} + 6T + 36$$
$19$ $$T^{2} - 8T + 64$$
$23$ $$T^{2} + 3T + 9$$
$29$ $$(T - 3)^{2}$$
$31$ $$T^{2} - 2T + 4$$
$37$ $$T^{2} + 8T + 64$$
$41$ $$(T - 3)^{2}$$
$43$ $$(T - 5)^{2}$$
$47$ $$T^{2}$$
$53$ $$T^{2} + 12T + 144$$
$59$ $$T^{2}$$
$61$ $$T^{2} + T + 1$$
$67$ $$T^{2} - 7T + 49$$
$71$ $$T^{2}$$
$73$ $$T^{2} + 10T + 100$$
$79$ $$T^{2} - 4T + 16$$
$83$ $$(T + 3)^{2}$$
$89$ $$T^{2} + 3T + 9$$
$97$ $$(T - 10)^{2}$$