# Properties

 Label 180.2.d.a Level $180$ Weight $2$ Character orbit 180.d Analytic conductor $1.437$ 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] = [180,2,Mod(109,180)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(180, base_ring=CyclotomicField(2))

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

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

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

chi := DirichletCharacter("180.109");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$180 = 2^{2} \cdot 3^{2} \cdot 5$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 180.d (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: no Analytic conductor: $$1.43730723638$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{-1})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} + 1$$ x^2 + 1 Coefficient ring: $$\Z[a_1, \ldots, a_{5}]$$ Coefficient ring index: $$2$$ Twist minimal: no (minimal twist has level 60) Sato-Tate group: $\mathrm{SU}(2)[C_{2}]$

## $q$-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 $$i = \sqrt{-1}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + (i - 1) q^{5} + 2 i q^{7}+O(q^{10})$$ q + (i - 1) * q^5 + 2*i * q^7 $$q + (i - 1) q^{5} + 2 i q^{7} + 4 q^{11} - 2 i q^{17} + 2 i q^{23} + ( - 2 i - 3) q^{25} - 6 q^{29} + 4 q^{31} + ( - 2 i - 8) q^{35} - 4 i q^{37} + 10 q^{41} - 2 i q^{43} + 2 i q^{47} - 9 q^{49} - 6 i q^{53} + (4 i - 4) q^{55} + 4 q^{59} + 2 q^{61} - 2 i q^{67} + 4 i q^{73} + 8 i q^{77} + 12 q^{79} + 2 i q^{83} + (2 i + 8) q^{85} - 10 q^{89} + 4 i q^{97} +O(q^{100})$$ q + (i - 1) * q^5 + 2*i * q^7 + 4 * q^11 - 2*i * q^17 + 2*i * q^23 + (-2*i - 3) * q^25 - 6 * q^29 + 4 * q^31 + (-2*i - 8) * q^35 - 4*i * q^37 + 10 * q^41 - 2*i * q^43 + 2*i * q^47 - 9 * q^49 - 6*i * q^53 + (4*i - 4) * q^55 + 4 * q^59 + 2 * q^61 - 2*i * q^67 + 4*i * q^73 + 8*i * q^77 + 12 * q^79 + 2*i * q^83 + (2*i + 8) * q^85 - 10 * q^89 + 4*i * q^97 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q - 2 q^{5}+O(q^{10})$$ 2 * q - 2 * q^5 $$2 q - 2 q^{5} + 8 q^{11} - 6 q^{25} - 12 q^{29} + 8 q^{31} - 16 q^{35} + 20 q^{41} - 18 q^{49} - 8 q^{55} + 8 q^{59} + 4 q^{61} + 24 q^{79} + 16 q^{85} - 20 q^{89}+O(q^{100})$$ 2 * q - 2 * q^5 + 8 * q^11 - 6 * q^25 - 12 * q^29 + 8 * q^31 - 16 * q^35 + 20 * q^41 - 18 * q^49 - 8 * q^55 + 8 * q^59 + 4 * q^61 + 24 * q^79 + 16 * q^85 - 20 * q^89

## Character values

We give the values of $$\chi$$ on generators for $$\left(\mathbb{Z}/180\mathbb{Z}\right)^\times$$.

 $$n$$ $$37$$ $$91$$ $$101$$ $$\chi(n)$$ $$-1$$ $$1$$ $$1$$

## 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 $$\iota_m(\nu)$$ $$a_{2}$$ $$a_{3}$$ $$a_{4}$$ $$a_{5}$$ $$a_{6}$$ $$a_{7}$$ $$a_{8}$$ $$a_{9}$$ $$a_{10}$$
109.1
 − 1.00000i 1.00000i
0 0 0 −1.00000 2.00000i 0 4.00000i 0 0 0
109.2 0 0 0 −1.00000 + 2.00000i 0 4.00000i 0 0 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
5.b even 2 1 inner

## Twists

By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 180.2.d.a 2
3.b odd 2 1 60.2.d.a 2
4.b odd 2 1 720.2.f.c 2
5.b even 2 1 inner 180.2.d.a 2
5.c odd 4 1 900.2.a.a 1
5.c odd 4 1 900.2.a.h 1
8.b even 2 1 2880.2.f.l 2
8.d odd 2 1 2880.2.f.p 2
9.c even 3 2 1620.2.r.d 4
9.d odd 6 2 1620.2.r.c 4
12.b even 2 1 240.2.f.b 2
15.d odd 2 1 60.2.d.a 2
15.e even 4 1 300.2.a.a 1
15.e even 4 1 300.2.a.d 1
20.d odd 2 1 720.2.f.c 2
20.e even 4 1 3600.2.a.d 1
20.e even 4 1 3600.2.a.bm 1
21.c even 2 1 2940.2.k.c 2
21.g even 6 2 2940.2.bb.e 4
21.h odd 6 2 2940.2.bb.d 4
24.f even 2 1 960.2.f.c 2
24.h odd 2 1 960.2.f.f 2
40.e odd 2 1 2880.2.f.p 2
40.f even 2 1 2880.2.f.l 2
45.h odd 6 2 1620.2.r.c 4
45.j even 6 2 1620.2.r.d 4
48.i odd 4 1 3840.2.d.o 2
48.i odd 4 1 3840.2.d.r 2
48.k even 4 1 3840.2.d.b 2
48.k even 4 1 3840.2.d.be 2
60.h even 2 1 240.2.f.b 2
60.l odd 4 1 1200.2.a.a 1
60.l odd 4 1 1200.2.a.s 1
105.g even 2 1 2940.2.k.c 2
105.o odd 6 2 2940.2.bb.d 4
105.p even 6 2 2940.2.bb.e 4
120.i odd 2 1 960.2.f.f 2
120.m even 2 1 960.2.f.c 2
120.q odd 4 1 4800.2.a.bf 1
120.q odd 4 1 4800.2.a.bk 1
120.w even 4 1 4800.2.a.bj 1
120.w even 4 1 4800.2.a.bn 1
240.t even 4 1 3840.2.d.b 2
240.t even 4 1 3840.2.d.be 2
240.bm odd 4 1 3840.2.d.o 2
240.bm odd 4 1 3840.2.d.r 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
60.2.d.a 2 3.b odd 2 1
60.2.d.a 2 15.d odd 2 1
180.2.d.a 2 1.a even 1 1 trivial
180.2.d.a 2 5.b even 2 1 inner
240.2.f.b 2 12.b even 2 1
240.2.f.b 2 60.h even 2 1
300.2.a.a 1 15.e even 4 1
300.2.a.d 1 15.e even 4 1
720.2.f.c 2 4.b odd 2 1
720.2.f.c 2 20.d odd 2 1
900.2.a.a 1 5.c odd 4 1
900.2.a.h 1 5.c odd 4 1
960.2.f.c 2 24.f even 2 1
960.2.f.c 2 120.m even 2 1
960.2.f.f 2 24.h odd 2 1
960.2.f.f 2 120.i odd 2 1
1200.2.a.a 1 60.l odd 4 1
1200.2.a.s 1 60.l odd 4 1
1620.2.r.c 4 9.d odd 6 2
1620.2.r.c 4 45.h odd 6 2
1620.2.r.d 4 9.c even 3 2
1620.2.r.d 4 45.j even 6 2
2880.2.f.l 2 8.b even 2 1
2880.2.f.l 2 40.f even 2 1
2880.2.f.p 2 8.d odd 2 1
2880.2.f.p 2 40.e odd 2 1
2940.2.k.c 2 21.c even 2 1
2940.2.k.c 2 105.g even 2 1
2940.2.bb.d 4 21.h odd 6 2
2940.2.bb.d 4 105.o odd 6 2
2940.2.bb.e 4 21.g even 6 2
2940.2.bb.e 4 105.p even 6 2
3600.2.a.d 1 20.e even 4 1
3600.2.a.bm 1 20.e even 4 1
3840.2.d.b 2 48.k even 4 1
3840.2.d.b 2 240.t even 4 1
3840.2.d.o 2 48.i odd 4 1
3840.2.d.o 2 240.bm odd 4 1
3840.2.d.r 2 48.i odd 4 1
3840.2.d.r 2 240.bm odd 4 1
3840.2.d.be 2 48.k even 4 1
3840.2.d.be 2 240.t even 4 1
4800.2.a.bf 1 120.q odd 4 1
4800.2.a.bj 1 120.w even 4 1
4800.2.a.bk 1 120.q odd 4 1
4800.2.a.bn 1 120.w even 4 1

## Hecke kernels

This newform subspace is the entire newspace $$S_{2}^{\mathrm{new}}(180, [\chi])$$.

## Hecke characteristic polynomials

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