LMFDB - Newform orbit 2448.1.ed.a

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [2448,1,Mod(143,2448)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(2448, base_ring=CyclotomicField(16))

chi = DirichletCharacter(H, H._module([8, 0, 8, 11]))

N = Newforms(chi, 1, names="a")

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

chi := DirichletCharacter("2448.143");

S:= CuspForms(chi, 1);

N := Newforms(S);

Level:	$ N $	$=$	$ 2448 = 2^{4} \cdot 3^{2} \cdot 17 $
Weight:	$ k $	$=$	$ 1 $
Character orbit:	$[\chi]$	$=$	2448.ed (of order $16$, degree $8$, 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:	$1.22171115093$
Analytic rank:	$0$
Dimension:	$8$
Coefficient field:	$\Q(\zeta_{16})$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$ x^{8} + 1 $ x^8 + 1
Coefficient ring:	$\Z[a_1, \ldots, a_{5}]$
Coefficient ring index:	$ 1 $
Twist minimal:	yes
Projective image:	$D_{16}$
Projective field:	Galois closure of $\mathbb{Q}[x]/(x^{16} - \cdots)$

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/2448\mathbb{Z}\right)^\times$.

$n$	$613$	$1361$	$1873$	$2143$
$\chi(n)$	$1$	$-1$	$\zeta_{16}^{3}$	$-1$

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} $

143.1

−0.923880	−	0.382683i
−0.382683	+	0.923880i
0.382683	+	0.923880i
−0.923880	+	0.382683i
0.923880	−	0.382683i
−0.382683	−	0.923880i
0.382683	−	0.923880i
0.923880	+	0.382683i

−1.92388

0.382683i

431.1

−1.38268

−

0.923880i

575.1

−0.617317

−

0.923880i

719.1

−1.92388

−

0.382683i

1151.1

−0.0761205

0.382683i

1295.1

−1.38268

0.923880i

1439.1

−0.617317

0.923880i

1727.1

−0.0761205

−

0.382683i

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
4.b	odd	2	1	CM by $\Q(\sqrt{-1}) $
51.i	even	16	1	inner
204.t	odd	16	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	2448.1.ed.a	✓	8
3.b	odd	2	1		2448.1.ed.b	yes	8
4.b	odd	2	1	CM	2448.1.ed.a	✓	8
12.b	even	2	1		2448.1.ed.b	yes	8
17.e	odd	16	1		2448.1.ed.b	yes	8
51.i	even	16	1	inner	2448.1.ed.a	✓	8
68.i	even	16	1		2448.1.ed.b	yes	8
204.t	odd	16	1	inner	2448.1.ed.a	✓	8

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
2448.1.ed.a	✓	8	1.a	even	1	1	trivial
2448.1.ed.a	✓	8	4.b	odd	2	1	CM
2448.1.ed.a	✓	8	51.i	even	16	1	inner
2448.1.ed.a	✓	8	204.t	odd	16	1	inner
2448.1.ed.b	yes	8	3.b	odd	2	1
2448.1.ed.b	yes	8	12.b	even	2	1
2448.1.ed.b	yes	8	17.e	odd	16	1
2448.1.ed.b	yes	8	68.i	even	16	1

This newform subspace can be constructed as the kernel of the linear operator $ T_{5}^{8} + 8T_{5}^{7} + 28T_{5}^{6} + 56T_{5}^{5} + 70T_{5}^{4} + 56T_{5}^{3} + 28T_{5}^{2} + 8T_{5} + 2 $ T5^8 + 8*T5^7 + 28*T5^6 + 56*T5^5 + 70*T5^4 + 56*T5^3 + 28*T5^2 + 8*T5 + 2 acting on $S_{1}^{\mathrm{new}}(2448, [\chi])$.

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$ T^{8} $ T^8
$3$	$ T^{8} $ T^8
$5$	$ T^{8} + 8 T^{7} + \cdots + 2 $ T^8 + 8T^7 + 28T^6 + 56T^5 + 70T^4 + 56T^3 + 28T^2 + 8*T + 2
$7$	$ T^{8} $ T^8
$11$	$ T^{8} $ T^8
$13$	$ T^{8} + 12T^{4} + 4 $ T^8 + 12*T^4 + 4
$17$	$ (T^{2} + 1)^{4} $ (T^2 + 1)^4
$19$	$ T^{8} $ T^8
$23$	$ T^{8} $ T^8
$29$	$ T^{8} + 2 T^{4} + \cdots + 2 $ T^8 + 2T^4 + 16T^3 + 20T^2 + 8T + 2
$31$	$ T^{8} $ T^8
$37$	$ T^{8} + 8 T^{5} + \cdots + 2 $ T^8 + 8T^5 + 2T^4 + 12T^2 - 8T + 2
$41$	$ T^{8} + 2 T^{4} + \cdots + 2 $ T^8 + 2T^4 - 16T^3 + 20T^2 - 8T + 2
$43$	$ T^{8} $ T^8
$47$	$ T^{8} $ T^8
$53$	$ (T^{4} + 2 T^{2} - 4 T + 2)^{2} $ (T^4 + 2T^2 - 4T + 2)^2
$59$	$ T^{8} $ T^8
$61$	$ T^{8} + 8 T^{5} + \cdots + 2 $ T^8 + 8T^5 + 2T^4 + 12T^2 - 8T + 2
$67$	$ T^{8} $ T^8
$71$	$ T^{8} $ T^8
$73$	$ T^{8} + 4 T^{6} + \cdots + 2 $ T^8 + 4T^6 + 6T^4 + 8T^3 + 4T^2 - 8*T + 2
$79$	$ T^{8} $ T^8
$83$	$ T^{8} $ T^8
$89$	$ T^{8} + 12T^{4} + 4 $ T^8 + 12*T^4 + 4
$97$	$ T^{8} + 2 T^{4} + \cdots + 2 $ T^8 + 2T^4 - 16T^3 + 20T^2 - 8T + 2
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Overview	Random
Universe	Knowledge

Classical	Maass
Hilbert	Bianchi

Elliptic curves over $\Q$
Elliptic curves over $\Q(\alpha)$
Genus 2 curves over $\Q$
Higher genus families
Abelian varieties over $\F_{q}$

Level:	\( N \)	\(=\)	\( 2448 = 2^{4} \cdot 3^{2} \cdot 17 \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	2448.ed (of order \(16\), degree \(8\), minimal)

\(f(q)\)	\(=\)	\( q + ( - \zeta_{16}^{7} - 1) q^{5}+O(q^{10}) \) q + (-z^7 - 1) * q^5	\( q + ( - \zeta_{16}^{7} - 1) q^{5} + ( - \zeta_{16}^{3} + \zeta_{16}) q^{13} - \zeta_{16}^{4} q^{17} + (\zeta_{16}^{7} - \zeta_{16}^{6} + 1) q^{25} + (\zeta_{16}^{5} - \zeta_{16}^{2}) q^{29} + ( - \zeta_{16}^{6} + \zeta_{16}^{5}) q^{37} + ( - \zeta_{16}^{6} - \zeta_{16}^{3}) q^{41} + \zeta_{16} q^{49} + ( - \zeta_{16}^{6} + \zeta_{16}^{4}) q^{53} + ( - \zeta_{16}^{7} - \zeta_{16}^{2}) q^{61} + (\zeta_{16}^{3} - \zeta_{16}^{2} + \cdots + 1) q^{65} + \cdots + (\zeta_{16}^{5} + \zeta_{16}^{2}) q^{97} +O(q^{100}) \) q + (-z^7 - 1) * q^5 + (-z^3 + z) * q^13 - z^4 * q^17 + (z^7 - z^6 + 1) * q^25 + (z^5 - z^2) * q^29 + (-z^6 + z^5) * q^37 + (-z^6 - z^3) * q^41 + z * q^49 + (-z^6 + z^4) * q^53 + (-z^7 - z^2) * q^61 + (z^3 - z^2 - z + 1) * q^65 + (-z^4 + z^3) * q^73 + (z^4 - z^3) * q^85 + (-z^3 + z) * q^89 + (z^5 + z^2) * q^97
\(\operatorname{Tr}(f)(q)\)	\(=\)	\( 8 q - 8 q^{5}+O(q^{10}) \) 8 * q - 8 * q^5	\( 8 q - 8 q^{5} + 8 q^{25} + 8 q^{65}+O(q^{100}) \) 8 * q - 8 * q^5 + 8 * q^25 + 8 * q^65

Introduction

L-functions

Modular forms

Varieties

Fields

Representations

Groups

Database

Properties

Related objects

Downloads

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Newspace parameters

Newform invariants

$q$-expansion

Character values

Embeddings

Inner twists

Twists

Hecke kernels

Hecke characteristic polynomials

This project is supported by grants from the US National Science Foundation, the UK Engineering and Physical Sciences Research Council, and the Simons Foundation.

Label	2448.1.ed.a

Level	$2448$
Weight	$1$
Character orbit	2448.ed
Analytic conductor	$1.222$
Analytic rank	$0$
Dimension	$8$
Projective image	$D_{16}$
CM discriminant	-4
Inner twists	$4$

Self dual:	no
Analytic conductor:	\(1.22171115093\)
Analytic rank:	\(0\)
Dimension:	\(8\)
Coefficient field:	\(\Q(\zeta_{16})\)
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	\( x^{8} + 1 \) x^8 + 1
Coefficient ring:	\(\Z[a_1, \ldots, a_{5}]\)
Coefficient ring index:	\( 1 \)
Twist minimal:	yes
Projective image:	\(D_{16}\)
Projective field:	Galois closure of \(\mathbb{Q}[x]/(x^{16} - \cdots)\)

\(n\)	\(613\)	\(1361\)	\(1873\)	\(2143\)
\(\chi(n)\)	\(1\)	\(-1\)	\(\zeta_{16}^{3}\)	\(-1\)

\(n\):		e.g. 2-40 or 990-1000
Embeddings:		e.g. 1-3 or 143.1
Significant digits:
Format:

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
4.b	odd	2	1	CM by \(\Q(\sqrt{-1}) \)
51.i	even	16	1	inner
204.t	odd	16	1	inner

$p$	$F_p(T)$
$2$	\( T^{8} \) T^8
$3$	\( T^{8} \) T^8
$5$	\( T^{8} + 8 T^{7} + \cdots + 2 \) T^8 + 8T^7 + 28T^6 + 56T^5 + 70T^4 + 56T^3 + 28T^2 + 8*T + 2
$7$	\( T^{8} \) T^8
$11$	\( T^{8} \) T^8
$13$	\( T^{8} + 12T^{4} + 4 \) T^8 + 12*T^4 + 4
$17$	\( (T^{2} + 1)^{4} \) (T^2 + 1)^4
$19$	\( T^{8} \) T^8
$23$	\( T^{8} \) T^8
$29$	\( T^{8} + 2 T^{4} + \cdots + 2 \) T^8 + 2T^4 + 16T^3 + 20T^2 + 8T + 2
$31$	\( T^{8} \) T^8
$37$	\( T^{8} + 8 T^{5} + \cdots + 2 \) T^8 + 8T^5 + 2T^4 + 12T^2 - 8T + 2
$41$	\( T^{8} + 2 T^{4} + \cdots + 2 \) T^8 + 2T^4 - 16T^3 + 20T^2 - 8T + 2
$43$	\( T^{8} \) T^8
$47$	\( T^{8} \) T^8
$53$	\( (T^{4} + 2 T^{2} - 4 T + 2)^{2} \) (T^4 + 2T^2 - 4T + 2)^2
$59$	\( T^{8} \) T^8
$61$	\( T^{8} + 8 T^{5} + \cdots + 2 \) T^8 + 8T^5 + 2T^4 + 12T^2 - 8T + 2
$67$	\( T^{8} \) T^8
$71$	\( T^{8} \) T^8
$73$	\( T^{8} + 4 T^{6} + \cdots + 2 \) T^8 + 4T^6 + 6T^4 + 8T^3 + 4T^2 - 8*T + 2
$79$	\( T^{8} \) T^8
$83$	\( T^{8} \) T^8
$89$	\( T^{8} + 12T^{4} + 4 \) T^8 + 12*T^4 + 4
$97$	\( T^{8} + 2 T^{4} + \cdots + 2 \) T^8 + 2T^4 - 16T^3 + 20T^2 - 8T + 2
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