# Properties

 Label 980.1.f.b Level $980$ Weight $1$ Character orbit 980.f Self dual yes Analytic conductor $0.489$ Analytic rank $0$ Dimension $1$ Projective image $D_{3}$ CM discriminant -20 Inner twists $2$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [980,1,Mod(99,980)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(980, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([1, 1, 0]))

N = Newforms(chi, 1, names="a")

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

chi := DirichletCharacter("980.99");

S:= CuspForms(chi, 1);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$980 = 2^{2} \cdot 5 \cdot 7^{2}$$ Weight: $$k$$ $$=$$ $$1$$ Character orbit: $$[\chi]$$ $$=$$ 980.f (of order $$2$$, degree $$1$$, 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: yes Analytic conductor: $$0.489083712380$$ Analytic rank: $$0$$ Dimension: $$1$$ Coefficient field: $$\mathbb{Q}$$ Coefficient ring: $$\mathbb{Z}$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 140) Projective image: $$D_{3}$$ Projective field: Galois closure of 3.1.980.1 Artin image: $D_6$ Artin field: Galois closure of 6.0.3841600.1

## $q$-expansion

comment: q-expansion

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

gp: mfcoefs(f, 20)

 $$f(q)$$ $$=$$ $$q - q^{2} + q^{3} + q^{4} + q^{5} - q^{6} - q^{8}+O(q^{10})$$ q - q^2 + q^3 + q^4 + q^5 - q^6 - q^8 $$q - q^{2} + q^{3} + q^{4} + q^{5} - q^{6} - q^{8} - q^{10} + q^{12} + q^{15} + q^{16} + q^{20} + q^{23} - q^{24} + q^{25} - q^{27} - q^{29} - q^{30} - q^{32} - q^{40} - q^{41} + q^{43} - q^{46} - 2 q^{47} + q^{48} - q^{50} + q^{54} + q^{58} + q^{60} - q^{61} + q^{64} + q^{67} + q^{69} + q^{75} + q^{80} - q^{81} + q^{82} + q^{83} - q^{86} - q^{87} - q^{89} + q^{92} + 2 q^{94} - q^{96}+O(q^{100})$$ q - q^2 + q^3 + q^4 + q^5 - q^6 - q^8 - q^10 + q^12 + q^15 + q^16 + q^20 + q^23 - q^24 + q^25 - q^27 - q^29 - q^30 - q^32 - q^40 - q^41 + q^43 - q^46 - 2 * q^47 + q^48 - q^50 + q^54 + q^58 + q^60 - q^61 + q^64 + q^67 + q^69 + q^75 + q^80 - q^81 + q^82 + q^83 - q^86 - q^87 - q^89 + q^92 + 2 * q^94 - q^96

## Character values

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

 $$n$$ $$101$$ $$197$$ $$491$$ $$\chi(n)$$ $$1$$ $$-1$$ $$-1$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
99.1
 0
−1.00000 1.00000 1.00000 1.00000 −1.00000 0 −1.00000 0 −1.00000
 $$n$$: 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
20.d odd 2 1 CM by $$\Q(\sqrt{-5})$$

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 980.1.f.b 1
4.b odd 2 1 980.1.f.c 1
5.b even 2 1 980.1.f.c 1
7.b odd 2 1 980.1.f.a 1
7.c even 3 2 140.1.p.b yes 2
7.d odd 6 2 980.1.p.b 2
20.d odd 2 1 CM 980.1.f.b 1
21.h odd 6 2 1260.1.ci.a 2
28.d even 2 1 980.1.f.d 1
28.f even 6 2 980.1.p.a 2
28.g odd 6 2 140.1.p.a 2
35.c odd 2 1 980.1.f.d 1
35.i odd 6 2 980.1.p.a 2
35.j even 6 2 140.1.p.a 2
35.l odd 12 4 700.1.u.a 4
56.k odd 6 2 2240.1.bt.a 2
56.p even 6 2 2240.1.bt.b 2
84.n even 6 2 1260.1.ci.b 2
105.o odd 6 2 1260.1.ci.b 2
140.c even 2 1 980.1.f.a 1
140.p odd 6 2 140.1.p.b yes 2
140.s even 6 2 980.1.p.b 2
140.w even 12 4 700.1.u.a 4
280.bf even 6 2 2240.1.bt.a 2
280.bi odd 6 2 2240.1.bt.b 2
420.ba even 6 2 1260.1.ci.a 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
140.1.p.a 2 28.g odd 6 2
140.1.p.a 2 35.j even 6 2
140.1.p.b yes 2 7.c even 3 2
140.1.p.b yes 2 140.p odd 6 2
700.1.u.a 4 35.l odd 12 4
700.1.u.a 4 140.w even 12 4
980.1.f.a 1 7.b odd 2 1
980.1.f.a 1 140.c even 2 1
980.1.f.b 1 1.a even 1 1 trivial
980.1.f.b 1 20.d odd 2 1 CM
980.1.f.c 1 4.b odd 2 1
980.1.f.c 1 5.b even 2 1
980.1.f.d 1 28.d even 2 1
980.1.f.d 1 35.c odd 2 1
980.1.p.a 2 28.f even 6 2
980.1.p.a 2 35.i odd 6 2
980.1.p.b 2 7.d odd 6 2
980.1.p.b 2 140.s even 6 2
1260.1.ci.a 2 21.h odd 6 2
1260.1.ci.a 2 420.ba even 6 2
1260.1.ci.b 2 84.n even 6 2
1260.1.ci.b 2 105.o odd 6 2
2240.1.bt.a 2 56.k odd 6 2
2240.1.bt.a 2 280.bf even 6 2
2240.1.bt.b 2 56.p even 6 2
2240.1.bt.b 2 280.bi odd 6 2

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{1}^{\mathrm{new}}(980, [\chi])$$:

 $$T_{3} - 1$$ T3 - 1 $$T_{23} - 1$$ T23 - 1

## Hecke characteristic polynomials

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