LMFDB - Newform orbit 1045.1.br.a

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [1045,1,Mod(18,1045)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(1045, base_ring=CyclotomicField(20))

chi = DirichletCharacter(H, H._module([15, 14, 10]))

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

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

chi := DirichletCharacter("1045.18");

S:= CuspForms(chi, 1);

N := Newforms(S);

Level:	$ N $	$=$	$ 1045 = 5 \cdot 11 \cdot 19 $
Weight:	$ k $	$=$	$ 1 $
Character orbit:	$[\chi]$	$=$	1045.br (of order $20$, 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:	$0.521522938201$
Analytic rank:	$0$
Dimension:	$8$
Coefficient field:	$\Q(\zeta_{20})$
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$ x^{8} - x^{6} + x^{4} - x^{2} + 1 $ x^8 - x^6 + x^4 - x^2 + 1
Coefficient ring:	$\Z[a_1, \ldots, a_{4}]$
Coefficient ring index:	$ 1 $
Twist minimal:	yes
Projective image:	$D_{20}$
Projective field:	Galois closure of $\mathbb{Q}[x]/(x^{20} - \cdots)$

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/1045\mathbb{Z}\right)^\times$.

$n$	$496$	$761$	$837$
$\chi(n)$	$-1$	$-\zeta_{20}^{8}$	$-\zeta_{20}^{5}$

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} $

18.1

−0.587785	−	0.809017i
0.587785	+	0.809017i
0.951057	+	0.309017i
−0.951057	+	0.309017i
−0.951057	−	0.309017i
0.951057	−	0.309017i
0.587785	−	0.809017i
−0.587785	+	0.809017i

−0.951057

0.309017i

−0.809017

−

0.587785i

−0.412215

0.809017i

0.587785

−

0.809017i

227.1

0.951057

−

0.309017i

−0.809017

−

0.587785i

−1.58779

−

0.809017i

−0.587785

0.809017i

303.1

−0.587785

−

0.809017i

0.309017

0.951057i

−1.95106

−

0.309017i

−0.951057

0.309017i

398.1

0.587785

−

0.809017i

0.309017

−

0.951057i

−0.0489435

−

0.309017i

0.951057

0.309017i

512.1

0.587785

0.809017i

0.309017

0.951057i

−0.0489435

0.309017i

0.951057

−

0.309017i

607.1

−0.587785

0.809017i

0.309017

−

0.951057i

−1.95106

0.309017i

−0.951057

−

0.309017i

778.1

0.951057

0.309017i

−0.809017

0.587785i

−1.58779

0.809017i

−0.587785

−

0.809017i

987.1

−0.951057

−

0.309017i

−0.809017

0.587785i

−0.412215

−

0.809017i

0.587785

0.809017i

Inner twists

Char	Parity	Ord	Mult	Type
1.a	even	1	1	trivial
19.b	odd	2	1	CM by $\Q(\sqrt{-19}) $
55.l	even	20	1	inner
1045.br	odd	20	1	inner

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	1045.1.br.a	✓	8
5.c	odd	4	1		1045.1.br.b	yes	8
11.d	odd	10	1		1045.1.br.b	yes	8
19.b	odd	2	1	CM	1045.1.br.a	✓	8
55.l	even	20	1	inner	1045.1.br.a	✓	8
95.g	even	4	1		1045.1.br.b	yes	8
209.k	even	10	1		1045.1.br.b	yes	8
1045.br	odd	20	1	inner	1045.1.br.a	✓	8

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
1045.1.br.a	✓	8	1.a	even	1	1	trivial
1045.1.br.a	✓	8	19.b	odd	2	1	CM
1045.1.br.a	✓	8	55.l	even	20	1	inner
1045.1.br.a	✓	8	1045.br	odd	20	1	inner
1045.1.br.b	yes	8	5.c	odd	4	1
1045.1.br.b	yes	8	11.d	odd	10	1
1045.1.br.b	yes	8	95.g	even	4	1
1045.1.br.b	yes	8	209.k	even	10	1

This newform subspace can be constructed as the kernel of the linear operator $ T_{7}^{8} + 8T_{7}^{7} + 27T_{7}^{6} + 50T_{7}^{5} + 56T_{7}^{4} + 40T_{7}^{3} + 18T_{7}^{2} + 4T_{7} + 1 $ T7^8 + 8*T7^7 + 27*T7^6 + 50*T7^5 + 56*T7^4 + 40*T7^3 + 18*T7^2 + 4*T7 + 1 acting on $S_{1}^{\mathrm{new}}(1045, [\chi])$.

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$ T^{8} $ T^8
$3$	$ T^{8} $ T^8
$5$	$ (T^{4} + T^{3} + T^{2} + \cdots + 1)^{2} $ (T^4 + T^3 + T^2 + T + 1)^2
$7$	$ T^{8} + 8 T^{7} + \cdots + 1 $ T^8 + 8T^7 + 27T^6 + 50T^5 + 56T^4 + 40T^3 + 18T^2 + 4*T + 1
$11$	$ T^{8} - T^{6} + T^{4} + \cdots + 1 $ T^8 - T^6 + T^4 - T^2 + 1
$13$	$ T^{8} $ T^8
$17$	$ T^{8} + 2 T^{7} + \cdots + 1 $ T^8 + 2T^7 + 7T^6 + 10T^5 + 16T^4 + 10T^3 - 2T^2 - 4*T + 1
$19$	$ (T^{4} + T^{3} + T^{2} + \cdots + 1)^{2} $ (T^4 + T^3 + T^2 + T + 1)^2
$23$	$ T^{8} - 2 T^{7} + \cdots + 1 $ T^8 - 2T^7 + 2T^6 + 11T^4 - 20T^3 + 18T^2 - 6T + 1
$29$	$ T^{8} $ T^8
$31$	$ T^{8} $ T^8
$37$	$ T^{8} $ T^8
$41$	$ T^{8} $ T^8
$43$	$ T^{8} - 2 T^{7} + \cdots + 1 $ T^8 - 2T^7 + 2T^6 + 11T^4 - 20T^3 + 18T^2 - 6T + 1
$47$	$ T^{8} + 2 T^{7} + \cdots + 1 $ T^8 + 2T^7 + 2T^6 - 4T^4 - 10T^3 + 13T^2 - 4T + 1
$53$	$ T^{8} $ T^8
$59$	$ T^{8} $ T^8
$61$	$ T^{8} + T^{6} + 6 T^{4} + \cdots + 1 $ T^8 + T^6 + 6T^4 - 4T^2 + 1
$67$	$ T^{8} $ T^8
$71$	$ T^{8} $ T^8
$73$	$ T^{8} - 2 T^{7} + \cdots + 16 $ T^8 - 2T^7 + 2T^6 - 4T^4 + 8T^2 - 16*T + 16
$79$	$ T^{8} $ T^8
$83$	$ T^{8} + 2 T^{7} + \cdots + 1 $ T^8 + 2T^7 + 2T^6 - 4T^4 - 10T^3 + 13T^2 - 4T + 1
$89$	$ T^{8} $ T^8
$97$	$ T^{8} $ T^8
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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:	\( N \)	\(=\)	\( 1045 = 5 \cdot 11 \cdot 19 \)
Weight:	\( k \)	\(=\)	\( 1 \)
Character orbit:	\([\chi]\)	\(=\)	1045.br (of order \(20\), degree \(8\), minimal)

\(f(q)\)	\(=\)	\( q - \zeta_{20}^{3} q^{4} + \zeta_{20}^{4} q^{5} + ( - \zeta_{20} - 1) q^{7} + \zeta_{20}^{9} q^{9} +O(q^{10}) \) q - z^3 * q^4 + z^4 * q^5 + (-z - 1) * q^7 + z^9 * q^9	\( q - \zeta_{20}^{3} q^{4} + \zeta_{20}^{4} q^{5} + ( - \zeta_{20} - 1) q^{7} + \zeta_{20}^{9} q^{9} - \zeta_{20}^{7} q^{11} + \zeta_{20}^{6} q^{16} + (\zeta_{20}^{5} - \zeta_{20}^{2}) q^{17} - \zeta_{20}^{2} q^{19} - \zeta_{20}^{7} q^{20} + ( - \zeta_{20}^{4} - \zeta_{20}) q^{23} + \zeta_{20}^{8} q^{25} + (\zeta_{20}^{4} + \zeta_{20}^{3}) q^{28} + ( - \zeta_{20}^{5} - \zeta_{20}^{4}) q^{35} + \zeta_{20}^{2} q^{36} + (\zeta_{20}^{9} + \zeta_{20}^{6}) q^{43} - q^{44} - \zeta_{20}^{3} q^{45} + ( - \zeta_{20}^{6} + \zeta_{20}^{3}) q^{47} + (\zeta_{20}^{2} + \zeta_{20} + 1) q^{49} + \zeta_{20} q^{55} + (\zeta_{20}^{7} - \zeta_{20}^{5}) q^{61} + ( - \zeta_{20}^{9} + 1) q^{63} - \zeta_{20}^{9} q^{64} + ( - \zeta_{20}^{8} + \zeta_{20}^{5}) q^{68} + ( - \zeta_{20}^{8} - \zeta_{20}^{3}) q^{73} + \zeta_{20}^{5} q^{76} + (\zeta_{20}^{8} + \zeta_{20}^{7}) q^{77} - q^{80} - \zeta_{20}^{8} q^{81} + ( - \zeta_{20}^{9} + \zeta_{20}^{8}) q^{83} + (\zeta_{20}^{9} - \zeta_{20}^{6}) q^{85} + (\zeta_{20}^{7} + \zeta_{20}^{4}) q^{92} - \zeta_{20}^{6} q^{95} + \zeta_{20}^{6} q^{99} +O(q^{100}) \) q - z^3 * q^4 + z^4 * q^5 + (-z - 1) * q^7 + z^9 * q^9 - z^7 * q^11 + z^6 * q^16 + (z^5 - z^2) * q^17 - z^2 * q^19 - z^7 * q^20 + (-z^4 - z) * q^23 + z^8 * q^25 + (z^4 + z^3) * q^28 + (-z^5 - z^4) * q^35 + z^2 * q^36 + (z^9 + z^6) * q^43 - q^44 - z^3 * q^45 + (-z^6 + z^3) * q^47 + (z^2 + z + 1) * q^49 + z * q^55 + (z^7 - z^5) * q^61 + (-z^9 + 1) * q^63 - z^9 * q^64 + (-z^8 + z^5) * q^68 + (-z^8 - z^3) * q^73 + z^5 * q^76 + (z^8 + z^7) * q^77 - q^80 - z^8 * q^81 + (-z^9 + z^8) * q^83 + (z^9 - z^6) * q^85 + (z^7 + z^4) * q^92 - z^6 * q^95 + z^6 * q^99
\(\operatorname{Tr}(f)(q)\)	\(=\)	\( 8 q - 2 q^{5} - 8 q^{7}+O(q^{10}) \) 8 * q - 2 * q^5 - 8 * q^7	\( 8 q - 2 q^{5} - 8 q^{7} + 2 q^{16} - 2 q^{17} - 2 q^{19} + 2 q^{23} - 2 q^{25} - 2 q^{28} + 2 q^{35} + 2 q^{36} + 2 q^{43} - 8 q^{44} - 2 q^{47} + 10 q^{49} + 8 q^{63} + 2 q^{68} + 2 q^{73} - 2 q^{77} - 8 q^{80} + 2 q^{81} - 2 q^{83} - 2 q^{85} - 2 q^{92} - 2 q^{95} + 2 q^{99}+O(q^{100}) \) 8 * q - 2 * q^5 - 8 * q^7 + 2 * q^16 - 2 * q^17 - 2 * q^19 + 2 * q^23 - 2 * q^25 - 2 * q^28 + 2 * q^35 + 2 * q^36 + 2 * q^43 - 8 * q^44 - 2 * q^47 + 10 * q^49 + 8 * q^63 + 2 * q^68 + 2 * q^73 - 2 * q^77 - 8 * q^80 + 2 * q^81 - 2 * q^83 - 2 * q^85 - 2 * q^92 - 2 * q^95 + 2 * q^99

Introduction

L-functions

Modular forms

Varieties

Fields

Representations

Groups

Database

Properties

Related objects

Downloads

Learn more

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	1045.1.br.a

Level	$1045$
Weight	$1$
Character orbit	1045.br
Analytic conductor	$0.522$
Analytic rank	$0$
Dimension	$8$
Projective image	$D_{20}$
CM discriminant	-19
Inner twists	$4$

Self dual:	no
Analytic conductor:	\(0.521522938201\)
Analytic rank:	\(0\)
Dimension:	\(8\)
Coefficient field:	\(\Q(\zeta_{20})\)
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	\( x^{8} - x^{6} + x^{4} - x^{2} + 1 \) x^8 - x^6 + x^4 - x^2 + 1
Coefficient ring:	\(\Z[a_1, \ldots, a_{4}]\)
Coefficient ring index:	\( 1 \)
Twist minimal:	yes
Projective image:	\(D_{20}\)
Projective field:	Galois closure of \(\mathbb{Q}[x]/(x^{20} - \cdots)\)

\(n\)	\(496\)	\(761\)	\(837\)
\(\chi(n)\)	\(-1\)	\(-\zeta_{20}^{8}\)	\(-\zeta_{20}^{5}\)

\(n\):		e.g. 2-40 or 990-1000
Embeddings:		e.g. 1-3 or 18.1
Significant digits:
Format:

$p$	$F_p(T)$
$2$	\( T^{8} \) T^8
$3$	\( T^{8} \) T^8
$5$	\( (T^{4} + T^{3} + T^{2} + \cdots + 1)^{2} \) (T^4 + T^3 + T^2 + T + 1)^2
$7$	\( T^{8} + 8 T^{7} + \cdots + 1 \) T^8 + 8T^7 + 27T^6 + 50T^5 + 56T^4 + 40T^3 + 18T^2 + 4*T + 1
$11$	\( T^{8} - T^{6} + T^{4} + \cdots + 1 \) T^8 - T^6 + T^4 - T^2 + 1
$13$	\( T^{8} \) T^8
$17$	\( T^{8} + 2 T^{7} + \cdots + 1 \) T^8 + 2T^7 + 7T^6 + 10T^5 + 16T^4 + 10T^3 - 2T^2 - 4*T + 1
$19$	\( (T^{4} + T^{3} + T^{2} + \cdots + 1)^{2} \) (T^4 + T^3 + T^2 + T + 1)^2
$23$	\( T^{8} - 2 T^{7} + \cdots + 1 \) T^8 - 2T^7 + 2T^6 + 11T^4 - 20T^3 + 18T^2 - 6T + 1
$29$	\( T^{8} \) T^8
$31$	\( T^{8} \) T^8
$37$	\( T^{8} \) T^8
$41$	\( T^{8} \) T^8
$43$	\( T^{8} - 2 T^{7} + \cdots + 1 \) T^8 - 2T^7 + 2T^6 + 11T^4 - 20T^3 + 18T^2 - 6T + 1
$47$	\( T^{8} + 2 T^{7} + \cdots + 1 \) T^8 + 2T^7 + 2T^6 - 4T^4 - 10T^3 + 13T^2 - 4T + 1
$53$	\( T^{8} \) T^8
$59$	\( T^{8} \) T^8
$61$	\( T^{8} + T^{6} + 6 T^{4} + \cdots + 1 \) T^8 + T^6 + 6T^4 - 4T^2 + 1
$67$	\( T^{8} \) T^8
$71$	\( T^{8} \) T^8
$73$	\( T^{8} - 2 T^{7} + \cdots + 16 \) T^8 - 2T^7 + 2T^6 - 4T^4 + 8T^2 - 16*T + 16
$79$	\( T^{8} \) T^8
$83$	\( T^{8} + 2 T^{7} + \cdots + 1 \) T^8 + 2T^7 + 2T^6 - 4T^4 - 10T^3 + 13T^2 - 4T + 1
$89$	\( T^{8} \) T^8
$97$	\( T^{8} \) T^8
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