# Properties

 Label 2550.2.a.bl Level $2550$ Weight $2$ Character orbit 2550.a Self dual yes Analytic conductor $20.362$ 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] = [2550,2,Mod(1,2550)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2550, 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("2550.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$2550 = 2 \cdot 3 \cdot 5^{2} \cdot 17$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 2550.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: $$20.3618525154$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{6})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - 6$$ x^2 - 6 Coefficient ring: $$\Z[a_1, \ldots, a_{7}]$$ Coefficient ring index: $$2$$ Twist minimal: no (minimal twist has level 510) 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 $$\beta = 2\sqrt{6}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + q^{2} + q^{3} + q^{4} + q^{6} + \beta q^{7} + q^{8} + q^{9}+O(q^{10})$$ q + q^2 + q^3 + q^4 + q^6 + b * q^7 + q^8 + q^9 $$q + q^{2} + q^{3} + q^{4} + q^{6} + \beta q^{7} + q^{8} + q^{9} + q^{12} + ( - \beta - 2) q^{13} + \beta q^{14} + q^{16} + q^{17} + q^{18} + 4 q^{19} + \beta q^{21} + 4 q^{23} + q^{24} + ( - \beta - 2) q^{26} + q^{27} + \beta q^{28} + 6 q^{29} + 4 q^{31} + q^{32} + q^{34} + q^{36} - 6 q^{37} + 4 q^{38} + ( - \beta - 2) q^{39} + ( - \beta + 2) q^{41} + \beta q^{42} + ( - \beta - 4) q^{43} + 4 q^{46} - 2 \beta q^{47} + q^{48} + 17 q^{49} + q^{51} + ( - \beta - 2) q^{52} + (2 \beta - 2) q^{53} + q^{54} + \beta q^{56} + 4 q^{57} + 6 q^{58} + \beta q^{59} + (2 \beta + 2) q^{61} + 4 q^{62} + \beta q^{63} + q^{64} + ( - \beta + 4) q^{67} + q^{68} + 4 q^{69} + ( - \beta - 4) q^{71} + q^{72} + (\beta + 6) q^{73} - 6 q^{74} + 4 q^{76} + ( - \beta - 2) q^{78} + ( - 2 \beta + 4) q^{79} + q^{81} + ( - \beta + 2) q^{82} + ( - 2 \beta - 4) q^{83} + \beta q^{84} + ( - \beta - 4) q^{86} + 6 q^{87} + ( - 2 \beta + 2) q^{89} + ( - 2 \beta - 24) q^{91} + 4 q^{92} + 4 q^{93} - 2 \beta q^{94} + q^{96} + (3 \beta - 2) q^{97} + 17 q^{98} +O(q^{100})$$ q + q^2 + q^3 + q^4 + q^6 + b * q^7 + q^8 + q^9 + q^12 + (-b - 2) * q^13 + b * q^14 + q^16 + q^17 + q^18 + 4 * q^19 + b * q^21 + 4 * q^23 + q^24 + (-b - 2) * q^26 + q^27 + b * q^28 + 6 * q^29 + 4 * q^31 + q^32 + q^34 + q^36 - 6 * q^37 + 4 * q^38 + (-b - 2) * q^39 + (-b + 2) * q^41 + b * q^42 + (-b - 4) * q^43 + 4 * q^46 - 2*b * q^47 + q^48 + 17 * q^49 + q^51 + (-b - 2) * q^52 + (2*b - 2) * q^53 + q^54 + b * q^56 + 4 * q^57 + 6 * q^58 + b * q^59 + (2*b + 2) * q^61 + 4 * q^62 + b * q^63 + q^64 + (-b + 4) * q^67 + q^68 + 4 * q^69 + (-b - 4) * q^71 + q^72 + (b + 6) * q^73 - 6 * q^74 + 4 * q^76 + (-b - 2) * q^78 + (-2*b + 4) * q^79 + q^81 + (-b + 2) * q^82 + (-2*b - 4) * q^83 + b * q^84 + (-b - 4) * q^86 + 6 * q^87 + (-2*b + 2) * q^89 + (-2*b - 24) * q^91 + 4 * q^92 + 4 * q^93 - 2*b * q^94 + q^96 + (3*b - 2) * q^97 + 17 * q^98 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + 2 q^{2} + 2 q^{3} + 2 q^{4} + 2 q^{6} + 2 q^{8} + 2 q^{9}+O(q^{10})$$ 2 * q + 2 * q^2 + 2 * q^3 + 2 * q^4 + 2 * q^6 + 2 * q^8 + 2 * q^9 $$2 q + 2 q^{2} + 2 q^{3} + 2 q^{4} + 2 q^{6} + 2 q^{8} + 2 q^{9} + 2 q^{12} - 4 q^{13} + 2 q^{16} + 2 q^{17} + 2 q^{18} + 8 q^{19} + 8 q^{23} + 2 q^{24} - 4 q^{26} + 2 q^{27} + 12 q^{29} + 8 q^{31} + 2 q^{32} + 2 q^{34} + 2 q^{36} - 12 q^{37} + 8 q^{38} - 4 q^{39} + 4 q^{41} - 8 q^{43} + 8 q^{46} + 2 q^{48} + 34 q^{49} + 2 q^{51} - 4 q^{52} - 4 q^{53} + 2 q^{54} + 8 q^{57} + 12 q^{58} + 4 q^{61} + 8 q^{62} + 2 q^{64} + 8 q^{67} + 2 q^{68} + 8 q^{69} - 8 q^{71} + 2 q^{72} + 12 q^{73} - 12 q^{74} + 8 q^{76} - 4 q^{78} + 8 q^{79} + 2 q^{81} + 4 q^{82} - 8 q^{83} - 8 q^{86} + 12 q^{87} + 4 q^{89} - 48 q^{91} + 8 q^{92} + 8 q^{93} + 2 q^{96} - 4 q^{97} + 34 q^{98}+O(q^{100})$$ 2 * q + 2 * q^2 + 2 * q^3 + 2 * q^4 + 2 * q^6 + 2 * q^8 + 2 * q^9 + 2 * q^12 - 4 * q^13 + 2 * q^16 + 2 * q^17 + 2 * q^18 + 8 * q^19 + 8 * q^23 + 2 * q^24 - 4 * q^26 + 2 * q^27 + 12 * q^29 + 8 * q^31 + 2 * q^32 + 2 * q^34 + 2 * q^36 - 12 * q^37 + 8 * q^38 - 4 * q^39 + 4 * q^41 - 8 * q^43 + 8 * q^46 + 2 * q^48 + 34 * q^49 + 2 * q^51 - 4 * q^52 - 4 * q^53 + 2 * q^54 + 8 * q^57 + 12 * q^58 + 4 * q^61 + 8 * q^62 + 2 * q^64 + 8 * q^67 + 2 * q^68 + 8 * q^69 - 8 * q^71 + 2 * q^72 + 12 * q^73 - 12 * q^74 + 8 * q^76 - 4 * q^78 + 8 * q^79 + 2 * q^81 + 4 * q^82 - 8 * q^83 - 8 * q^86 + 12 * q^87 + 4 * q^89 - 48 * q^91 + 8 * q^92 + 8 * q^93 + 2 * q^96 - 4 * q^97 + 34 * q^98

## 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
 −2.44949 2.44949
1.00000 1.00000 1.00000 0 1.00000 −4.89898 1.00000 1.00000 0
1.2 1.00000 1.00000 1.00000 0 1.00000 4.89898 1.00000 1.00000 0
 $$n$$: e.g. 2-40 or 990-1000 Significant digits: Format: Complex embeddings Normalized embeddings Satake parameters Satake angles

## Atkin-Lehner signs

$$p$$ Sign
$$2$$ $$-1$$
$$3$$ $$-1$$
$$5$$ $$1$$
$$17$$ $$-1$$

## 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 2550.2.a.bl 2
3.b odd 2 1 7650.2.a.cu 2
5.b even 2 1 510.2.a.h 2
5.c odd 4 2 2550.2.d.u 4
15.d odd 2 1 1530.2.a.s 2
20.d odd 2 1 4080.2.a.bq 2
85.c even 2 1 8670.2.a.be 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
510.2.a.h 2 5.b even 2 1
1530.2.a.s 2 15.d odd 2 1
2550.2.a.bl 2 1.a even 1 1 trivial
2550.2.d.u 4 5.c odd 4 2
4080.2.a.bq 2 20.d odd 2 1
7650.2.a.cu 2 3.b odd 2 1
8670.2.a.be 2 85.c even 2 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(2550))$$:

 $$T_{7}^{2} - 24$$ T7^2 - 24 $$T_{11}$$ T11 $$T_{13}^{2} + 4T_{13} - 20$$ T13^2 + 4*T13 - 20

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$(T - 1)^{2}$$
$3$ $$(T - 1)^{2}$$
$5$ $$T^{2}$$
$7$ $$T^{2} - 24$$
$11$ $$T^{2}$$
$13$ $$T^{2} + 4T - 20$$
$17$ $$(T - 1)^{2}$$
$19$ $$(T - 4)^{2}$$
$23$ $$(T - 4)^{2}$$
$29$ $$(T - 6)^{2}$$
$31$ $$(T - 4)^{2}$$
$37$ $$(T + 6)^{2}$$
$41$ $$T^{2} - 4T - 20$$
$43$ $$T^{2} + 8T - 8$$
$47$ $$T^{2} - 96$$
$53$ $$T^{2} + 4T - 92$$
$59$ $$T^{2} - 24$$
$61$ $$T^{2} - 4T - 92$$
$67$ $$T^{2} - 8T - 8$$
$71$ $$T^{2} + 8T - 8$$
$73$ $$T^{2} - 12T + 12$$
$79$ $$T^{2} - 8T - 80$$
$83$ $$T^{2} + 8T - 80$$
$89$ $$T^{2} - 4T - 92$$
$97$ $$T^{2} + 4T - 212$$