LMFDB - Newform orbit 2600.2.d.g

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [2600,2,Mod(1249,2600)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2600, base_ring=CyclotomicField(2))

chi = DirichletCharacter(H, H._module([0, 0, 1, 0]))

N = Newforms(chi, 2, names="a")

//Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code

chi := DirichletCharacter("2600.1249");

S:= CuspForms(chi, 2);

N := Newforms(S);

Level:	$N$	$=$	$2600 = 2^{3} \cdot 5^{2} \cdot 13$
Weight:	$k$	$=$	$2$
Character orbit:	$[\chi]$	$=$	2600.d (of order $2$ , degree $1$ , not minimal)

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:	no
Analytic conductor:	$20.7611045255$
Analytic rank:	$0$
Dimension:	$2$
Coefficient field:	$\Q(\sqrt{-1})$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$x^{2} + 1$ x^2 + 1
Coefficient ring:	$\Z[a_1, \ldots, a_{13}]$
Coefficient ring index:	$1$
Twist minimal:	no (minimal twist has level 520)
Sato-Tate group:	$\mathrm{SU}(2)[C_{2}]$

$q$ -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 $i = \sqrt{-1}$ . We also show the integral $q$ -expansion of the trace form.

$f(q)$	$=$	$q + 3 q^{9} - 4 q^{11} + i q^{13} - 6 i q^{17} - 4 q^{19} + 2 q^{29} - 4 q^{31} - 6 i q^{37} - 6 q^{41} - 8 i q^{43} + 7 q^{49} - 2 i q^{53} - 4 q^{59} - 10 q^{61} + 12 i q^{67} - 4 q^{71} - 14 i q^{73} + \cdots - 12 q^{99} +O(q^{100})$ q + 3 * q^9 - 4 * q^11 + i * q^13 - 6i q^17 - 4 * q^19 + 2 * q^29 - 4 * q^31 - 6i q^37 - 6 * q^41 - 8i q^43 + 7 * q^49 - 2i q^53 - 4 * q^59 - 10 * q^61 + 12i q^67 - 4 * q^71 - 14i q^73 + 16 * q^79 + 9 * q^81 - 12i q^83 - 2 * q^89 - 2i q^97 - 12 * q^99
$\operatorname{Tr}(f)(q)$	$=$	$2 q + 6 q^{9} - 8 q^{11} - 8 q^{19} + 4 q^{29} - 8 q^{31} - 12 q^{41} + 14 q^{49} - 8 q^{59} - 20 q^{61} - 8 q^{71} + 32 q^{79} + 18 q^{81} - 4 q^{89} - 24 q^{99}+O(q^{100})$ 2 * q + 6 * q^9 - 8 * q^11 - 8 * q^19 + 4 * q^29 - 8 * q^31 - 12 * q^41 + 14 * q^49 - 8 * q^59 - 20 * q^61 - 8 * q^71 + 32 * q^79 + 18 * q^81 - 4 * q^89 - 24 * q^99

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/2600\mathbb{Z}\right)^\times$ .

$n$	$1301$	$1601$	$1951$	$1977$
$\chi(n)$	$1$	$1$	$1$	$-1$

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}

1249.1

	−	1.00000i
		1.00000i

3.00000

1249.2

3.00000

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
5.b	even	2	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	2600.2.d.g		2
5.b	even	2	1	inner	2600.2.d.g		2
5.c	odd	4	1		520.2.a.a	✓	1
5.c	odd	4	1		2600.2.a.h		1
15.e	even	4	1		4680.2.a.t		1
20.e	even	4	1		1040.2.a.d		1
20.e	even	4	1		5200.2.a.s		1
40.i	odd	4	1		4160.2.a.m		1
40.k	even	4	1		4160.2.a.l		1
60.l	odd	4	1		9360.2.a.bl		1
65.h	odd	4	1		6760.2.a.j		1

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
520.2.a.a	✓	1	5.c	odd	4	1
1040.2.a.d		1	20.e	even	4	1
2600.2.a.h		1	5.c	odd	4	1
2600.2.d.g		2	1.a	even	1	1	trivial
2600.2.d.g		2	5.b	even	2	1	inner
4160.2.a.l		1	40.k	even	4	1
4160.2.a.m		1	40.i	odd	4	1
4680.2.a.t		1	15.e	even	4	1
5200.2.a.s		1	20.e	even	4	1
6760.2.a.j		1	65.h	odd	4	1
9360.2.a.bl		1	60.l	odd	4	1

Hecke kernels

This newform subspace can be constructed as the intersection of the kernels of the following linear operators acting on $S_{2}^{\mathrm{new}}(2600, [\chi])$ :

T_{3}

T_{7}

T_{11} + 4

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$T^{2}$ T^2
$3$	$T^{2}$ T^2
$5$	$T^{2}$ T^2
$7$	$T^{2}$ T^2
$11$	$(T + 4)^{2}$ (T + 4)^2
$13$	$T^{2} + 1$ T^2 + 1
$17$	$T^{2} + 36$ T^2 + 36
$19$	$(T + 4)^{2}$ (T + 4)^2
$23$	$T^{2}$ T^2
$29$	$(T - 2)^{2}$ (T - 2)^2
$31$	$(T + 4)^{2}$ (T + 4)^2
$37$	$T^{2} + 36$ T^2 + 36
$41$	$(T + 6)^{2}$ (T + 6)^2
$43$	$T^{2} + 64$ T^2 + 64
$47$	$T^{2}$ T^2
$53$	$T^{2} + 4$ T^2 + 4
$59$	$(T + 4)^{2}$ (T + 4)^2
$61$	$(T + 10)^{2}$ (T + 10)^2
$67$	$T^{2} + 144$ T^2 + 144
$71$	$(T + 4)^{2}$ (T + 4)^2
$73$	$T^{2} + 196$ T^2 + 196
$79$	$(T - 16)^{2}$ (T - 16)^2
$83$	$T^{2} + 144$ T^2 + 144
$89$	$(T + 2)^{2}$ (T + 2)^2
$97$	$T^{2} + 4$ T^2 + 4
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