# Properties

 Label 2496.2.a.bj Level $2496$ Weight $2$ Character orbit 2496.a Self dual yes Analytic conductor $19.931$ 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] = [2496,2,Mod(1,2496)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2496, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 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("2496.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$2496 = 2^{6} \cdot 3 \cdot 13$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 2496.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: $$19.9306603445$$ Analytic rank: $$0$$ Dimension: $$2$$ Coefficient field: $$\Q(\sqrt{5})$$ comment: defining polynomial  gp: f.mod \\ as an extension of the character field Defining polynomial: $$x^{2} - x - 1$$ x^2 - x - 1 Coefficient ring: $$\Z[a_1, \ldots, a_{5}]$$ Coefficient ring index: $$2$$ Twist minimal: no (minimal twist has level 1248) 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 $$\beta = \sqrt{5}$$. We also show the integral $$q$$-expansion of the trace form.

 $$f(q)$$ $$=$$ $$q + q^{3} + (\beta + 1) q^{5} + ( - \beta + 3) q^{7} + q^{9}+O(q^{10})$$ q + q^3 + (b + 1) * q^5 + (-b + 3) * q^7 + q^9 $$q + q^{3} + (\beta + 1) q^{5} + ( - \beta + 3) q^{7} + q^{9} + 2 \beta q^{11} + q^{13} + (\beta + 1) q^{15} - 2 \beta q^{17} + ( - \beta - 1) q^{19} + ( - \beta + 3) q^{21} + (2 \beta + 2) q^{23} + (2 \beta + 1) q^{25} + q^{27} + ( - 2 \beta + 4) q^{29} + ( - \beta + 7) q^{31} + 2 \beta q^{33} + (2 \beta - 2) q^{35} - 2 \beta q^{37} + q^{39} + (\beta - 7) q^{41} + (2 \beta - 2) q^{43} + (\beta + 1) q^{45} + (2 \beta + 4) q^{47} + ( - 6 \beta + 7) q^{49} - 2 \beta q^{51} + (2 \beta + 4) q^{53} + (2 \beta + 10) q^{55} + ( - \beta - 1) q^{57} + ( - 4 \beta - 2) q^{59} + ( - 2 \beta - 8) q^{61} + ( - \beta + 3) q^{63} + (\beta + 1) q^{65} + ( - 3 \beta + 1) q^{67} + (2 \beta + 2) q^{69} + 10 q^{71} + 2 \beta q^{73} + (2 \beta + 1) q^{75} + (6 \beta - 10) q^{77} - 4 \beta q^{79} + q^{81} + ( - 4 \beta - 6) q^{83} + ( - 2 \beta - 10) q^{85} + ( - 2 \beta + 4) q^{87} + (3 \beta - 9) q^{89} + ( - \beta + 3) q^{91} + ( - \beta + 7) q^{93} + ( - 2 \beta - 6) q^{95} + ( - 2 \beta + 12) q^{97} + 2 \beta q^{99} +O(q^{100})$$ q + q^3 + (b + 1) * q^5 + (-b + 3) * q^7 + q^9 + 2*b * q^11 + q^13 + (b + 1) * q^15 - 2*b * q^17 + (-b - 1) * q^19 + (-b + 3) * q^21 + (2*b + 2) * q^23 + (2*b + 1) * q^25 + q^27 + (-2*b + 4) * q^29 + (-b + 7) * q^31 + 2*b * q^33 + (2*b - 2) * q^35 - 2*b * q^37 + q^39 + (b - 7) * q^41 + (2*b - 2) * q^43 + (b + 1) * q^45 + (2*b + 4) * q^47 + (-6*b + 7) * q^49 - 2*b * q^51 + (2*b + 4) * q^53 + (2*b + 10) * q^55 + (-b - 1) * q^57 + (-4*b - 2) * q^59 + (-2*b - 8) * q^61 + (-b + 3) * q^63 + (b + 1) * q^65 + (-3*b + 1) * q^67 + (2*b + 2) * q^69 + 10 * q^71 + 2*b * q^73 + (2*b + 1) * q^75 + (6*b - 10) * q^77 - 4*b * q^79 + q^81 + (-4*b - 6) * q^83 + (-2*b - 10) * q^85 + (-2*b + 4) * q^87 + (3*b - 9) * q^89 + (-b + 3) * q^91 + (-b + 7) * q^93 + (-2*b - 6) * q^95 + (-2*b + 12) * q^97 + 2*b * q^99 $$\operatorname{Tr}(f)(q)$$ $$=$$ $$2 q + 2 q^{3} + 2 q^{5} + 6 q^{7} + 2 q^{9}+O(q^{10})$$ 2 * q + 2 * q^3 + 2 * q^5 + 6 * q^7 + 2 * q^9 $$2 q + 2 q^{3} + 2 q^{5} + 6 q^{7} + 2 q^{9} + 2 q^{13} + 2 q^{15} - 2 q^{19} + 6 q^{21} + 4 q^{23} + 2 q^{25} + 2 q^{27} + 8 q^{29} + 14 q^{31} - 4 q^{35} + 2 q^{39} - 14 q^{41} - 4 q^{43} + 2 q^{45} + 8 q^{47} + 14 q^{49} + 8 q^{53} + 20 q^{55} - 2 q^{57} - 4 q^{59} - 16 q^{61} + 6 q^{63} + 2 q^{65} + 2 q^{67} + 4 q^{69} + 20 q^{71} + 2 q^{75} - 20 q^{77} + 2 q^{81} - 12 q^{83} - 20 q^{85} + 8 q^{87} - 18 q^{89} + 6 q^{91} + 14 q^{93} - 12 q^{95} + 24 q^{97}+O(q^{100})$$ 2 * q + 2 * q^3 + 2 * q^5 + 6 * q^7 + 2 * q^9 + 2 * q^13 + 2 * q^15 - 2 * q^19 + 6 * q^21 + 4 * q^23 + 2 * q^25 + 2 * q^27 + 8 * q^29 + 14 * q^31 - 4 * q^35 + 2 * q^39 - 14 * q^41 - 4 * q^43 + 2 * q^45 + 8 * q^47 + 14 * q^49 + 8 * q^53 + 20 * q^55 - 2 * q^57 - 4 * q^59 - 16 * q^61 + 6 * q^63 + 2 * q^65 + 2 * q^67 + 4 * q^69 + 20 * q^71 + 2 * q^75 - 20 * q^77 + 2 * q^81 - 12 * q^83 - 20 * q^85 + 8 * q^87 - 18 * q^89 + 6 * q^91 + 14 * q^93 - 12 * q^95 + 24 * 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
 −0.618034 1.61803
0 1.00000 0 −1.23607 0 5.23607 0 1.00000 0
1.2 0 1.00000 0 3.23607 0 0.763932 0 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
$$2$$ $$-1$$
$$3$$ $$-1$$
$$13$$ $$-1$$

## 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 2496.2.a.bj 2
3.b odd 2 1 7488.2.a.ch 2
4.b odd 2 1 2496.2.a.bg 2
8.b even 2 1 1248.2.a.k 2
8.d odd 2 1 1248.2.a.m yes 2
12.b even 2 1 7488.2.a.cg 2
24.f even 2 1 3744.2.a.v 2
24.h odd 2 1 3744.2.a.w 2

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
1248.2.a.k 2 8.b even 2 1
1248.2.a.m yes 2 8.d odd 2 1
2496.2.a.bg 2 4.b odd 2 1
2496.2.a.bj 2 1.a even 1 1 trivial
3744.2.a.v 2 24.f even 2 1
3744.2.a.w 2 24.h odd 2 1
7488.2.a.cg 2 12.b even 2 1
7488.2.a.ch 2 3.b odd 2 1

## Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(2496))$$:

 $$T_{5}^{2} - 2T_{5} - 4$$ T5^2 - 2*T5 - 4 $$T_{7}^{2} - 6T_{7} + 4$$ T7^2 - 6*T7 + 4 $$T_{11}^{2} - 20$$ T11^2 - 20 $$T_{17}^{2} - 20$$ T17^2 - 20 $$T_{19}^{2} + 2T_{19} - 4$$ T19^2 + 2*T19 - 4

## Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T^{2}$$
$3$ $$(T - 1)^{2}$$
$5$ $$T^{2} - 2T - 4$$
$7$ $$T^{2} - 6T + 4$$
$11$ $$T^{2} - 20$$
$13$ $$(T - 1)^{2}$$
$17$ $$T^{2} - 20$$
$19$ $$T^{2} + 2T - 4$$
$23$ $$T^{2} - 4T - 16$$
$29$ $$T^{2} - 8T - 4$$
$31$ $$T^{2} - 14T + 44$$
$37$ $$T^{2} - 20$$
$41$ $$T^{2} + 14T + 44$$
$43$ $$T^{2} + 4T - 16$$
$47$ $$T^{2} - 8T - 4$$
$53$ $$T^{2} - 8T - 4$$
$59$ $$T^{2} + 4T - 76$$
$61$ $$T^{2} + 16T + 44$$
$67$ $$T^{2} - 2T - 44$$
$71$ $$(T - 10)^{2}$$
$73$ $$T^{2} - 20$$
$79$ $$T^{2} - 80$$
$83$ $$T^{2} + 12T - 44$$
$89$ $$T^{2} + 18T + 36$$
$97$ $$T^{2} - 24T + 124$$