# Properties

 Label 2205.2.a.z Level $2205$ Weight $2$ Character orbit 2205.a Self dual yes Analytic conductor $17.607$ Analytic rank $0$ Dimension $2$ CM no Inner twists $1$

# Related objects

Show commands: Magma / PariGP / SageMath

## Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [2205,2,Mod(1,2205)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2205, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([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("2205.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$2205 = 3^{2} \cdot 5 \cdot 7^{2}$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 2205.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: $$17.6070136457$$ 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: $$x^{2} - 3$$ x^2 - 3 Coefficient ring: $$\Z[a_1, a_2]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 105) 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)

Coefficients of the $$q$$-expansion are expressed in terms of $$\beta = \sqrt{3}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + (\beta + 1) q^{2} + (2 \beta + 2) q^{4} - q^{5} + (2 \beta + 6) q^{8}+O(q^{10})$$ q + (b + 1) * q^2 + (2*b + 2) * q^4 - q^5 + (2*b + 6) * q^8 $$q + (\beta + 1) q^{2} + (2 \beta + 2) q^{4} - q^{5} + (2 \beta + 6) q^{8} + ( - \beta - 1) q^{10} + ( - \beta + 1) q^{11} + ( - \beta + 4) q^{13} + (4 \beta + 8) q^{16} + (\beta - 5) q^{17} + (2 \beta + 1) q^{19} + ( - 2 \beta - 2) q^{20} - 2 q^{22} + (\beta + 3) q^{23} + q^{25} + (3 \beta + 1) q^{26} + (3 \beta - 1) q^{29} + ( - 2 \beta + 3) q^{31} + (8 \beta + 8) q^{32} + ( - 4 \beta - 2) q^{34} + ( - 3 \beta + 2) q^{37} + (3 \beta + 7) q^{38} + ( - 2 \beta - 6) q^{40} + (\beta - 1) q^{41} + (3 \beta - 2) q^{43} - 4 q^{44} + (4 \beta + 6) q^{46} - 2 q^{47} + (\beta + 1) q^{50} + (6 \beta + 2) q^{52} + ( - 6 \beta - 2) q^{53} + (\beta - 1) q^{55} + (2 \beta + 8) q^{58} + (3 \beta - 5) q^{59} + 4 q^{61} + (\beta - 3) q^{62} + (8 \beta + 16) q^{64} + (\beta - 4) q^{65} + ( - 5 \beta - 6) q^{67} + ( - 8 \beta - 4) q^{68} + ( - 3 \beta - 1) q^{71} + (5 \beta + 4) q^{73} + ( - \beta - 7) q^{74} + (6 \beta + 14) q^{76} + ( - 6 \beta + 3) q^{79} + ( - 4 \beta - 8) q^{80} + 2 q^{82} + ( - 7 \beta - 3) q^{83} + ( - \beta + 5) q^{85} + (\beta + 7) q^{86} - 4 \beta q^{88} + ( - 7 \beta - 3) q^{89} + (8 \beta + 12) q^{92} + ( - 2 \beta - 2) q^{94} + ( - 2 \beta - 1) q^{95} + (4 \beta + 8) q^{97} +O(q^{100})$$ q + (b + 1) * q^2 + (2*b + 2) * q^4 - q^5 + (2*b + 6) * q^8 + (-b - 1) * q^10 + (-b + 1) * q^11 + (-b + 4) * q^13 + (4*b + 8) * q^16 + (b - 5) * q^17 + (2*b + 1) * q^19 + (-2*b - 2) * q^20 - 2 * q^22 + (b + 3) * q^23 + q^25 + (3*b + 1) * q^26 + (3*b - 1) * q^29 + (-2*b + 3) * q^31 + (8*b + 8) * q^32 + (-4*b - 2) * q^34 + (-3*b + 2) * q^37 + (3*b + 7) * q^38 + (-2*b - 6) * q^40 + (b - 1) * q^41 + (3*b - 2) * q^43 - 4 * q^44 + (4*b + 6) * q^46 - 2 * q^47 + (b + 1) * q^50 + (6*b + 2) * q^52 + (-6*b - 2) * q^53 + (b - 1) * q^55 + (2*b + 8) * q^58 + (3*b - 5) * q^59 + 4 * q^61 + (b - 3) * q^62 + (8*b + 16) * q^64 + (b - 4) * q^65 + (-5*b - 6) * q^67 + (-8*b - 4) * q^68 + (-3*b - 1) * q^71 + (5*b + 4) * q^73 + (-b - 7) * q^74 + (6*b + 14) * q^76 + (-6*b + 3) * q^79 + (-4*b - 8) * q^80 + 2 * q^82 + (-7*b - 3) * q^83 + (-b + 5) * q^85 + (b + 7) * q^86 - 4*b * q^88 + (-7*b - 3) * q^89 + (8*b + 12) * q^92 + (-2*b - 2) * q^94 + (-2*b - 1) * q^95 + (4*b + 8) * q^97 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + 2 q^{2} + 4 q^{4} - 2 q^{5} + 12 q^{8}+O(q^{10})$$ 2 * q + 2 * q^2 + 4 * q^4 - 2 * q^5 + 12 * q^8 $$2 q + 2 q^{2} + 4 q^{4} - 2 q^{5} + 12 q^{8} - 2 q^{10} + 2 q^{11} + 8 q^{13} + 16 q^{16} - 10 q^{17} + 2 q^{19} - 4 q^{20} - 4 q^{22} + 6 q^{23} + 2 q^{25} + 2 q^{26} - 2 q^{29} + 6 q^{31} + 16 q^{32} - 4 q^{34} + 4 q^{37} + 14 q^{38} - 12 q^{40} - 2 q^{41} - 4 q^{43} - 8 q^{44} + 12 q^{46} - 4 q^{47} + 2 q^{50} + 4 q^{52} - 4 q^{53} - 2 q^{55} + 16 q^{58} - 10 q^{59} + 8 q^{61} - 6 q^{62} + 32 q^{64} - 8 q^{65} - 12 q^{67} - 8 q^{68} - 2 q^{71} + 8 q^{73} - 14 q^{74} + 28 q^{76} + 6 q^{79} - 16 q^{80} + 4 q^{82} - 6 q^{83} + 10 q^{85} + 14 q^{86} - 6 q^{89} + 24 q^{92} - 4 q^{94} - 2 q^{95} + 16 q^{97}+O(q^{100})$$ 2 * q + 2 * q^2 + 4 * q^4 - 2 * q^5 + 12 * q^8 - 2 * q^10 + 2 * q^11 + 8 * q^13 + 16 * q^16 - 10 * q^17 + 2 * q^19 - 4 * q^20 - 4 * q^22 + 6 * q^23 + 2 * q^25 + 2 * q^26 - 2 * q^29 + 6 * q^31 + 16 * q^32 - 4 * q^34 + 4 * q^37 + 14 * q^38 - 12 * q^40 - 2 * q^41 - 4 * q^43 - 8 * q^44 + 12 * q^46 - 4 * q^47 + 2 * q^50 + 4 * q^52 - 4 * q^53 - 2 * q^55 + 16 * q^58 - 10 * q^59 + 8 * q^61 - 6 * q^62 + 32 * q^64 - 8 * q^65 - 12 * q^67 - 8 * q^68 - 2 * q^71 + 8 * q^73 - 14 * q^74 + 28 * q^76 + 6 * q^79 - 16 * q^80 + 4 * q^82 - 6 * q^83 + 10 * q^85 + 14 * q^86 - 6 * q^89 + 24 * q^92 - 4 * q^94 - 2 * q^95 + 16 * q^97

## 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
 −1.73205 1.73205
−0.732051 0 −1.46410 −1.00000 0 0 2.53590 0 0.732051
1.2 2.73205 0 5.46410 −1.00000 0 0 9.46410 0 −2.73205
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

$$p$$ Sign
$$3$$ $$-1$$
$$5$$ $$1$$
$$7$$ $$1$$

## 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 2205.2.a.z 2
3.b odd 2 1 735.2.a.g 2
7.b odd 2 1 2205.2.a.ba 2
7.c even 3 2 315.2.j.c 4
15.d odd 2 1 3675.2.a.bg 2
21.c even 2 1 735.2.a.h 2
21.g even 6 2 735.2.i.l 4
21.h odd 6 2 105.2.i.d 4
84.n even 6 2 1680.2.bg.o 4
105.g even 2 1 3675.2.a.be 2
105.o odd 6 2 525.2.i.f 4
105.x even 12 2 525.2.r.a 4
105.x even 12 2 525.2.r.f 4

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
105.2.i.d 4 21.h odd 6 2
315.2.j.c 4 7.c even 3 2
525.2.i.f 4 105.o odd 6 2
525.2.r.a 4 105.x even 12 2
525.2.r.f 4 105.x even 12 2
735.2.a.g 2 3.b odd 2 1
735.2.a.h 2 21.c even 2 1
735.2.i.l 4 21.g even 6 2
1680.2.bg.o 4 84.n even 6 2
2205.2.a.z 2 1.a even 1 1 trivial
2205.2.a.ba 2 7.b odd 2 1
3675.2.a.be 2 105.g even 2 1
3675.2.a.bg 2 15.d odd 2 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(2205))$$:

 $$T_{2}^{2} - 2T_{2} - 2$$ T2^2 - 2*T2 - 2 $$T_{11}^{2} - 2T_{11} - 2$$ T11^2 - 2*T11 - 2 $$T_{13}^{2} - 8T_{13} + 13$$ T13^2 - 8*T13 + 13 $$T_{17}^{2} + 10T_{17} + 22$$ T17^2 + 10*T17 + 22

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2} - 2T - 2$$
$3$ $$T^{2}$$
$5$ $$(T + 1)^{2}$$
$7$ $$T^{2}$$
$11$ $$T^{2} - 2T - 2$$
$13$ $$T^{2} - 8T + 13$$
$17$ $$T^{2} + 10T + 22$$
$19$ $$T^{2} - 2T - 11$$
$23$ $$T^{2} - 6T + 6$$
$29$ $$T^{2} + 2T - 26$$
$31$ $$T^{2} - 6T - 3$$
$37$ $$T^{2} - 4T - 23$$
$41$ $$T^{2} + 2T - 2$$
$43$ $$T^{2} + 4T - 23$$
$47$ $$(T + 2)^{2}$$
$53$ $$T^{2} + 4T - 104$$
$59$ $$T^{2} + 10T - 2$$
$61$ $$(T - 4)^{2}$$
$67$ $$T^{2} + 12T - 39$$
$71$ $$T^{2} + 2T - 26$$
$73$ $$T^{2} - 8T - 59$$
$79$ $$T^{2} - 6T - 99$$
$83$ $$T^{2} + 6T - 138$$
$89$ $$T^{2} + 6T - 138$$
$97$ $$T^{2} - 16T + 16$$