# Properties

 Label 2205.2.a.n 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: $$\Q(\sqrt{2})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - 2$$ x^2 - 2 Coefficient ring: $$\Z[a_1, a_2]$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 35) 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 $$\beta = \sqrt{2}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + (\beta - 1) q^{2} + ( - 2 \beta + 1) q^{4} - q^{5} + (\beta - 3) q^{8}+O(q^{10})$$ q + (b - 1) * q^2 + (-2*b + 1) * q^4 - q^5 + (b - 3) * q^8 $$q + (\beta - 1) q^{2} + ( - 2 \beta + 1) q^{4} - q^{5} + (\beta - 3) q^{8} + ( - \beta + 1) q^{10} + ( - 2 \beta - 2) q^{11} + (2 \beta - 2) q^{13} + 3 q^{16} + (2 \beta - 2) q^{17} - 2 \beta q^{19} + (2 \beta - 1) q^{20} - 2 q^{22} + (\beta + 1) q^{23} + q^{25} + ( - 4 \beta + 6) q^{26} + q^{29} - 6 q^{31} + (\beta + 3) q^{32} + ( - 4 \beta + 6) q^{34} + (2 \beta - 4) q^{38} + ( - \beta + 3) q^{40} + ( - 2 \beta + 5) q^{41} + (\beta + 5) q^{43} + (2 \beta + 6) q^{44} + q^{46} - 2 q^{47} + (\beta - 1) q^{50} + (6 \beta - 10) q^{52} + (2 \beta + 4) q^{53} + (2 \beta + 2) q^{55} + (\beta - 1) q^{58} + (6 \beta + 4) q^{59} + ( - 6 \beta - 3) q^{61} + ( - 6 \beta + 6) q^{62} + (2 \beta - 7) q^{64} + ( - 2 \beta + 2) q^{65} + (\beta + 11) q^{67} + (6 \beta - 10) q^{68} + (6 \beta + 4) q^{71} + (2 \beta + 2) q^{73} + ( - 2 \beta + 8) q^{76} + ( - 2 \beta + 12) q^{79} - 3 q^{80} + (7 \beta - 9) q^{82} + (9 \beta - 1) q^{83} + ( - 2 \beta + 2) q^{85} + (4 \beta - 3) q^{86} + (4 \beta + 2) q^{88} + ( - 4 \beta + 3) q^{89} + ( - \beta - 3) q^{92} + ( - 2 \beta + 2) q^{94} + 2 \beta q^{95} + ( - 4 \beta + 6) q^{97} +O(q^{100})$$ q + (b - 1) * q^2 + (-2*b + 1) * q^4 - q^5 + (b - 3) * q^8 + (-b + 1) * q^10 + (-2*b - 2) * q^11 + (2*b - 2) * q^13 + 3 * q^16 + (2*b - 2) * q^17 - 2*b * q^19 + (2*b - 1) * q^20 - 2 * q^22 + (b + 1) * q^23 + q^25 + (-4*b + 6) * q^26 + q^29 - 6 * q^31 + (b + 3) * q^32 + (-4*b + 6) * q^34 + (2*b - 4) * q^38 + (-b + 3) * q^40 + (-2*b + 5) * q^41 + (b + 5) * q^43 + (2*b + 6) * q^44 + q^46 - 2 * q^47 + (b - 1) * q^50 + (6*b - 10) * q^52 + (2*b + 4) * q^53 + (2*b + 2) * q^55 + (b - 1) * q^58 + (6*b + 4) * q^59 + (-6*b - 3) * q^61 + (-6*b + 6) * q^62 + (2*b - 7) * q^64 + (-2*b + 2) * q^65 + (b + 11) * q^67 + (6*b - 10) * q^68 + (6*b + 4) * q^71 + (2*b + 2) * q^73 + (-2*b + 8) * q^76 + (-2*b + 12) * q^79 - 3 * q^80 + (7*b - 9) * q^82 + (9*b - 1) * q^83 + (-2*b + 2) * q^85 + (4*b - 3) * q^86 + (4*b + 2) * q^88 + (-4*b + 3) * q^89 + (-b - 3) * q^92 + (-2*b + 2) * q^94 + 2*b * q^95 + (-4*b + 6) * q^97 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q - 2 q^{2} + 2 q^{4} - 2 q^{5} - 6 q^{8}+O(q^{10})$$ 2 * q - 2 * q^2 + 2 * q^4 - 2 * q^5 - 6 * q^8 $$2 q - 2 q^{2} + 2 q^{4} - 2 q^{5} - 6 q^{8} + 2 q^{10} - 4 q^{11} - 4 q^{13} + 6 q^{16} - 4 q^{17} - 2 q^{20} - 4 q^{22} + 2 q^{23} + 2 q^{25} + 12 q^{26} + 2 q^{29} - 12 q^{31} + 6 q^{32} + 12 q^{34} - 8 q^{38} + 6 q^{40} + 10 q^{41} + 10 q^{43} + 12 q^{44} + 2 q^{46} - 4 q^{47} - 2 q^{50} - 20 q^{52} + 8 q^{53} + 4 q^{55} - 2 q^{58} + 8 q^{59} - 6 q^{61} + 12 q^{62} - 14 q^{64} + 4 q^{65} + 22 q^{67} - 20 q^{68} + 8 q^{71} + 4 q^{73} + 16 q^{76} + 24 q^{79} - 6 q^{80} - 18 q^{82} - 2 q^{83} + 4 q^{85} - 6 q^{86} + 4 q^{88} + 6 q^{89} - 6 q^{92} + 4 q^{94} + 12 q^{97}+O(q^{100})$$ 2 * q - 2 * q^2 + 2 * q^4 - 2 * q^5 - 6 * q^8 + 2 * q^10 - 4 * q^11 - 4 * q^13 + 6 * q^16 - 4 * q^17 - 2 * q^20 - 4 * q^22 + 2 * q^23 + 2 * q^25 + 12 * q^26 + 2 * q^29 - 12 * q^31 + 6 * q^32 + 12 * q^34 - 8 * q^38 + 6 * q^40 + 10 * q^41 + 10 * q^43 + 12 * q^44 + 2 * q^46 - 4 * q^47 - 2 * q^50 - 20 * q^52 + 8 * q^53 + 4 * q^55 - 2 * q^58 + 8 * q^59 - 6 * q^61 + 12 * q^62 - 14 * q^64 + 4 * q^65 + 22 * q^67 - 20 * q^68 + 8 * q^71 + 4 * q^73 + 16 * q^76 + 24 * q^79 - 6 * q^80 - 18 * q^82 - 2 * q^83 + 4 * q^85 - 6 * q^86 + 4 * q^88 + 6 * q^89 - 6 * q^92 + 4 * q^94 + 12 * 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
 −1.41421 1.41421
−2.41421 0 3.82843 −1.00000 0 0 −4.41421 0 2.41421
1.2 0.414214 0 −1.82843 −1.00000 0 0 −1.58579 0 −0.414214
 $$n$$: 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.n 2
3.b odd 2 1 245.2.a.h 2
7.b odd 2 1 2205.2.a.q 2
7.c even 3 2 315.2.j.e 4
12.b even 2 1 3920.2.a.bq 2
15.d odd 2 1 1225.2.a.k 2
15.e even 4 2 1225.2.b.g 4
21.c even 2 1 245.2.a.g 2
21.g even 6 2 245.2.e.e 4
21.h odd 6 2 35.2.e.a 4
84.h odd 2 1 3920.2.a.bv 2
84.n even 6 2 560.2.q.k 4
105.g even 2 1 1225.2.a.m 2
105.k odd 4 2 1225.2.b.h 4
105.o odd 6 2 175.2.e.c 4
105.x even 12 4 175.2.k.a 8

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
35.2.e.a 4 21.h odd 6 2
175.2.e.c 4 105.o odd 6 2
175.2.k.a 8 105.x even 12 4
245.2.a.g 2 21.c even 2 1
245.2.a.h 2 3.b odd 2 1
245.2.e.e 4 21.g even 6 2
315.2.j.e 4 7.c even 3 2
560.2.q.k 4 84.n even 6 2
1225.2.a.k 2 15.d odd 2 1
1225.2.a.m 2 105.g even 2 1
1225.2.b.g 4 15.e even 4 2
1225.2.b.h 4 105.k odd 4 2
2205.2.a.n 2 1.a even 1 1 trivial
2205.2.a.q 2 7.b odd 2 1
3920.2.a.bq 2 12.b even 2 1
3920.2.a.bv 2 84.h odd 2 1

## Hecke kernels

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

 $$T_{2}^{2} + 2T_{2} - 1$$ T2^2 + 2*T2 - 1 $$T_{11}^{2} + 4T_{11} - 4$$ T11^2 + 4*T11 - 4 $$T_{13}^{2} + 4T_{13} - 4$$ T13^2 + 4*T13 - 4 $$T_{17}^{2} + 4T_{17} - 4$$ T17^2 + 4*T17 - 4

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2} + 2T - 1$$
$3$ $$T^{2}$$
$5$ $$(T + 1)^{2}$$
$7$ $$T^{2}$$
$11$ $$T^{2} + 4T - 4$$
$13$ $$T^{2} + 4T - 4$$
$17$ $$T^{2} + 4T - 4$$
$19$ $$T^{2} - 8$$
$23$ $$T^{2} - 2T - 1$$
$29$ $$(T - 1)^{2}$$
$31$ $$(T + 6)^{2}$$
$37$ $$T^{2}$$
$41$ $$T^{2} - 10T + 17$$
$43$ $$T^{2} - 10T + 23$$
$47$ $$(T + 2)^{2}$$
$53$ $$T^{2} - 8T + 8$$
$59$ $$T^{2} - 8T - 56$$
$61$ $$T^{2} + 6T - 63$$
$67$ $$T^{2} - 22T + 119$$
$71$ $$T^{2} - 8T - 56$$
$73$ $$T^{2} - 4T - 4$$
$79$ $$T^{2} - 24T + 136$$
$83$ $$T^{2} + 2T - 161$$
$89$ $$T^{2} - 6T - 23$$
$97$ $$T^{2} - 12T + 4$$