Properties

 Label 6720.2.a.ca Level $6720$ Weight $2$ Character orbit 6720.a Self dual yes Analytic conductor $53.659$ Analytic rank $0$ Dimension $1$ CM no Inner twists $1$

Related objects

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [6720,2,Mod(1,6720)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(6720, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 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("6720.1");

S:= CuspForms(chi, 2);

N := Newforms(S);

 Level: $$N$$ $$=$$ $$6720 = 2^{6} \cdot 3 \cdot 5 \cdot 7$$ Weight: $$k$$ $$=$$ $$2$$ Character orbit: $$[\chi]$$ $$=$$ 6720.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: $$53.6594701583$$ Analytic rank: $$0$$ Dimension: $$1$$ Coefficient field: $$\mathbb{Q}$$ Coefficient ring: $$\mathbb{Z}$$ Coefficient ring index: $$1$$ Twist minimal: no (minimal twist has level 3360) 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)

 $$f(q)$$ $$=$$ $$q + q^{3} + q^{5} - q^{7} + q^{9}+O(q^{10})$$ q + q^3 + q^5 - q^7 + q^9 $$q + q^{3} + q^{5} - q^{7} + q^{9} - 4 q^{11} + 6 q^{13} + q^{15} + 6 q^{17} - q^{21} - 4 q^{23} + q^{25} + q^{27} + 6 q^{29} - 4 q^{33} - q^{35} - 2 q^{37} + 6 q^{39} + 2 q^{41} - 4 q^{43} + q^{45} + 4 q^{47} + q^{49} + 6 q^{51} + 6 q^{53} - 4 q^{55} - 12 q^{59} + 10 q^{61} - q^{63} + 6 q^{65} - 4 q^{67} - 4 q^{69} + 8 q^{71} - 14 q^{73} + q^{75} + 4 q^{77} + 8 q^{79} + q^{81} + 12 q^{83} + 6 q^{85} + 6 q^{87} - 6 q^{89} - 6 q^{91} - 14 q^{97} - 4 q^{99}+O(q^{100})$$ q + q^3 + q^5 - q^7 + q^9 - 4 * q^11 + 6 * q^13 + q^15 + 6 * q^17 - q^21 - 4 * q^23 + q^25 + q^27 + 6 * q^29 - 4 * q^33 - q^35 - 2 * q^37 + 6 * q^39 + 2 * q^41 - 4 * q^43 + q^45 + 4 * q^47 + q^49 + 6 * q^51 + 6 * q^53 - 4 * q^55 - 12 * q^59 + 10 * q^61 - q^63 + 6 * q^65 - 4 * q^67 - 4 * q^69 + 8 * q^71 - 14 * q^73 + q^75 + 4 * q^77 + 8 * q^79 + q^81 + 12 * q^83 + 6 * q^85 + 6 * q^87 - 6 * q^89 - 6 * q^91 - 14 * q^97 - 4 * q^99

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
0 1.00000 0 1.00000 0 −1.00000 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
$$2$$ $$-1$$
$$3$$ $$-1$$
$$5$$ $$-1$$
$$7$$ $$+1$$

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 6720.2.a.ca 1
4.b odd 2 1 6720.2.a.bg 1
8.b even 2 1 3360.2.a.c 1
8.d odd 2 1 3360.2.a.p yes 1

By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
3360.2.a.c 1 8.b even 2 1
3360.2.a.p yes 1 8.d odd 2 1
6720.2.a.bg 1 4.b odd 2 1
6720.2.a.ca 1 1.a even 1 1 trivial

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $$S_{2}^{\mathrm{new}}(\Gamma_0(6720))$$:

 $$T_{11} + 4$$ T11 + 4 $$T_{13} - 6$$ T13 - 6 $$T_{17} - 6$$ T17 - 6 $$T_{19}$$ T19 $$T_{23} + 4$$ T23 + 4 $$T_{29} - 6$$ T29 - 6 $$T_{31}$$ T31

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ $$T$$
$3$ $$T - 1$$
$5$ $$T - 1$$
$7$ $$T + 1$$
$11$ $$T + 4$$
$13$ $$T - 6$$
$17$ $$T - 6$$
$19$ $$T$$
$23$ $$T + 4$$
$29$ $$T - 6$$
$31$ $$T$$
$37$ $$T + 2$$
$41$ $$T - 2$$
$43$ $$T + 4$$
$47$ $$T - 4$$
$53$ $$T - 6$$
$59$ $$T + 12$$
$61$ $$T - 10$$
$67$ $$T + 4$$
$71$ $$T - 8$$
$73$ $$T + 14$$
$79$ $$T - 8$$
$83$ $$T - 12$$
$89$ $$T + 6$$
$97$ $$T + 14$$