LMFDB - Newform orbit 819.2.c.d

Show commands: Magma / PariGP / SageMath

Newspace parameters

comment: Compute space of new eigenforms

[N,k,chi] = [819,2,Mod(64,819)]

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

lf = mfeigenbasis(mf)

from sage.modular.dirichlet import DirichletCharacter

H = DirichletGroup(819, base_ring=CyclotomicField(2))

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

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

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

chi := DirichletCharacter("819.64");

S:= CuspForms(chi, 2);

N := Newforms(S);

Level:	$N$	$=$	$819 = 3^{2} \cdot 7 \cdot 13$
Weight:	$k$	$=$	$2$
Character orbit:	$[\chi]$	$=$	819.c (of order $2$ , degree $1$ , 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:	$6.53974792554$
Analytic rank:	$0$
Dimension:	$8$
Coefficient field:	8.0.265727878144.1
comment: defining polynomial gp: f.mod \\ as an extension of the character field
Defining polynomial:	$x^{8} + 15x^{6} + 67x^{4} + 77x^{2} + 4$ x^8 + 15x^6 + 67x^4 + 77*x^2 + 4
Coefficient ring:	$\Z[a_1, \ldots, a_{7}]$
Coefficient ring index:	$2$
Twist minimal:	no (minimal twist has level 273)
Sato-Tate group:	$\mathrm{SU}(2)[C_{2}]$

Character values

We give the values of $\chi$ on generators for $\left(\mathbb{Z}/819\mathbb{Z}\right)^\times$ .

$n$	$92$	$379$	$703$
$\chi(n)$	$1$	$-1$	$1$

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}

64.1

	−	2.60520i
	−	2.54814i
	−	1.29051i
	−	0.233455i
		0.233455i
		1.29051i
		2.54814i
		2.60520i

−

2.60520i

−4.78706

3.78706i

−

1.00000i

7.26084i

9.86604

64.2

−

2.54814i

−4.49301

−

3.49301i

1.00000i

6.35254i

−8.90068

64.3

−

1.29051i

0.334573

1.33457i

1.00000i

−

3.01280i

1.72229

64.4

−

0.233455i

1.94550

−

2.94550i

−

1.00000i

−

0.921097i

−0.687642

64.5

0.233455i

1.94550

2.94550i

1.00000i

0.921097i

−0.687642

64.6

1.29051i

0.334573

−

1.33457i

−

1.00000i

3.01280i

1.72229

64.7

2.54814i

−4.49301

3.49301i

−

1.00000i

−

6.35254i

−8.90068

64.8

2.60520i

−4.78706

−

3.78706i

1.00000i

−

7.26084i

9.86604

Inner twists

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

Twists

By twisting character orbit
Char	Parity	Ord	Mult	Type	Twist	Min	Dim
1.a	even	1	1	trivial	819.2.c.d		8
3.b	odd	2	1		273.2.c.c	✓	8
12.b	even	2	1		4368.2.h.q		8
13.b	even	2	1	inner	819.2.c.d		8
21.c	even	2	1		1911.2.c.l		8
39.d	odd	2	1		273.2.c.c	✓	8
39.f	even	4	1		3549.2.a.v		4
39.f	even	4	1		3549.2.a.x		4
156.h	even	2	1		4368.2.h.q		8
273.g	even	2	1		1911.2.c.l		8

By twisted newform orbit
Twist	Min	Dim	Char	Parity	Ord	Mult	Type
273.2.c.c	✓	8	3.b	odd	2	1
273.2.c.c	✓	8	39.d	odd	2	1
819.2.c.d		8	1.a	even	1	1	trivial
819.2.c.d		8	13.b	even	2	1	inner
1911.2.c.l		8	21.c	even	2	1
1911.2.c.l		8	273.g	even	2	1
3549.2.a.v		4	39.f	even	4	1
3549.2.a.x		4	39.f	even	4	1
4368.2.h.q		8	12.b	even	2	1
4368.2.h.q		8	156.h	even	2	1

This newform subspace can be constructed as the kernel of the linear operator $T_{2}^{8} + 15T_{2}^{6} + 67T_{2}^{4} + 77T_{2}^{2} + 4$ T2^8 + 15*T2^6 + 67*T2^4 + 77*T2^2 + 4 acting on $S_{2}^{\mathrm{new}}(819, [\chi])$ .

Hecke characteristic polynomials

$p$	$F_p(T)$
$2$	$T^{8} + 15 T^{6} + \cdots + 4$ T^8 + 15T^6 + 67T^4 + 77*T^2 + 4
$3$	$T^{8}$ T^8
$5$	$T^{8} + 37 T^{6} + \cdots + 2704$ T^8 + 37T^6 + 468T^4 + 2240*T^2 + 2704
$7$	$(T^{2} + 1)^{4}$ (T^2 + 1)^4
$11$	$T^{8} + 44 T^{6} + \cdots + 1024$ T^8 + 44T^6 + 576T^4 + 2320*T^2 + 1024
$13$	$T^{8} + 6 T^{7} + \cdots + 28561$ T^8 + 6T^7 - 78T^5 - 306T^4 - 1014T^3 + 13182*T + 28561
$17$	$(T^{4} + 10 T^{3} + \cdots - 160)^{2}$ (T^4 + 10T^3 + 8T^2 - 112*T - 160)^2
$19$	$T^{8} + 97 T^{6} + \cdots + 1024$ T^8 + 97T^6 + 1984T^4 + 10752*T^2 + 1024
$23$	$(T^{4} - 3 T^{3} + \cdots + 1352)^{2}$ (T^4 - 3T^3 - 78T^2 + 140*T + 1352)^2
$29$	$(T^{4} - 9 T^{3} + \cdots - 440)^{2}$ (T^4 - 9T^3 - 14T^2 + 244*T - 440)^2
$31$	$T^{8} + 89 T^{6} + \cdots + 4096$ T^8 + 89T^6 + 2032T^4 + 6912*T^2 + 4096
$37$	$T^{8} + 176 T^{6} + \cdots + 262144$ T^8 + 176T^6 + 9216T^4 + 148480*T^2 + 262144
$41$	$T^{8} + 248 T^{6} + \cdots + 1784896$ T^8 + 248T^6 + 17376T^4 + 324304*T^2 + 1784896
$43$	$(T^{4} - 17 T^{3} + \cdots - 896)^{2}$ (T^4 - 17T^3 + 64T^2 + 160*T - 896)^2
$47$	$T^{8} + 241 T^{6} + \cdots + 6739216$ T^8 + 241T^6 + 18984T^4 + 605408*T^2 + 6739216
$53$	$(T^{4} - 5 T^{3} + \cdots + 712)^{2}$ (T^4 - 5T^3 - 142T^2 + 356*T + 712)^2
$59$	$T^{8} + 248 T^{6} + \cdots + 1364224$ T^8 + 248T^6 + 18384T^4 + 365968*T^2 + 1364224
$61$	$(T^{4} + 10 T^{3} + \cdots + 320)^{2}$ (T^4 + 10T^3 - 28T^2 - 136*T + 320)^2
$67$	$T^{8} + 452 T^{6} + \cdots + 66064384$ T^8 + 452T^6 + 67072T^4 + 3824640*T^2 + 66064384
$71$	$T^{8} + 44 T^{6} + \cdots + 1024$ T^8 + 44T^6 + 576T^4 + 2320*T^2 + 1024
$73$	$T^{8} + 305 T^{6} + \cdots + 5234944$ T^8 + 305T^6 + 22384T^4 + 595776*T^2 + 5234944
$79$	$(T^{4} + T^{3} - 32 T^{2} + \cdots - 80)^{2}$ (T^4 + T^3 - 32T^2 - 104T - 80)^2
$83$	$T^{8} + 241 T^{6} + \cdots + 6739216$ T^8 + 241T^6 + 18984T^4 + 605408*T^2 + 6739216
$89$	$T^{8} + 253 T^{6} + \cdots + 150544$ T^8 + 253T^6 + 19060T^4 + 379392*T^2 + 150544
$97$	$T^{8} + 553 T^{6} + \cdots + 82882816$ T^8 + 553T^6 + 87232T^4 + 4847616*T^2 + 82882816
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Classical	Maass
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Elliptic curves over $\Q$
Elliptic curves over $\Q(\alpha)$
Genus 2 curves over $\Q$
Higher genus families
Abelian varieties over $\F_{q}$

$f(q)$	$=$	$q + \beta_1 q^{2} + (\beta_{2} - 2) q^{4} + (\beta_{7} - \beta_{3}) q^{5} + \beta_{3} q^{7} + (\beta_{5} - \beta_{3} - 2 \beta_1) q^{8} + ( - \beta_{6} - 3 \beta_{4} + 1) q^{10} + (\beta_{5} + \beta_{3} + \beta_1) q^{11}+ \cdots - \beta_1 q^{98}+O(q^{100})$ q + b1 * q^2 + (b2 - 2) * q^4 + (b7 - b3) * q^5 + b3 * q^7 + (b5 - b3 - 2b1) q^8 + (-b6 - 3b4 + 1) q^10 + (b5 + b3 + b1) * q^11 + (-b6 + b3 + b1 - 1) * q^13 + b4 * q^14 + (b6 - b4 - b2 + 5) * q^16 + (-2b4 - 2) q^17 + (-b7 - b5 + 2b3 + b1) q^19 + (-2b7 + b5 + 11b3 + b1) * q^20 + (b6 + b4 - 3) * q^22 + (-b6 + 3b4 - b2) q^23 + (-b6 + b4 + b2 - 5) * q^25 + (-b7 + b5 + b4 + b3 + b2 - b1 - 4) * q^26 + (b7 - 2b3) q^28 + (-b6 - b4 + b2 + 2) * q^29 + (-b7 + b5 - b1) * q^31 + (2b3 + 3b1) * q^32 + (-2b7 + 8b3 - 2b1) q^34 + (-b2 + 1) * q^35 + (2b5 + 2b3 + 2b1) q^37 + (4b4 + 2b2 - 6) * q^38 + (b6 + 9b4 - 3) q^40 + (-b5 - 7b3 + b1) q^41 + (-b6 - b4 + b2 + 4) * q^43 + (2b7 + b5 - 3b3 - b1) * q^44 + (2b7 - 10b3 + 2b1) q^46 + (-b7 - 2b5 + b3 + 2b1) * q^47 - q^49 + (2b5 - 4b3 - 7b1) q^50 + (b7 + b5 + 3b4 - 3b3 - 2b2 - 4b1 + 2) * q^52 + (3b6 - b4 + b2 + 2) q^53 + (-2b6 - 2b2 + 2) * q^55 + (-b6 - 2b4 + 1) q^56 + (-2b7 + 2b5 + 4b3) q^58 + (-b5 + 7b3 + b1) q^59 + (2b6 - 2) q^61 + (2b6 + 2b4 - 2b2 + 4) q^62 + (2b6 + b2 - 2) q^64 + (-2b7 - b6 - b5 - 3b4 + b3 - b2 - 3b1 + 2) q^65 + (2b7 + 6b3 + 4b1) q^67 + (2b6 + 8b4 - 2b2 + 2) q^68 + (-b5 + b3 + 3b1) q^70 + (-b5 - b3 - b1) * q^71 + (b7 + b5 + 8b3 + b1) q^73 + (2b6 + 2b4 - 6) * q^74 + (2b7 - 14b3 - 8b1) q^76 + (-b6 + b4 - 1) * q^77 + (b6 - b4 + b2) * q^79 + (6b7 + b5 - 15b3 - b1) * q^80 + (-b6 - 7b4 + 2b2 - 5) * q^82 + (b7 + 2b5 - b3 - 2b1) * q^83 + (-2b7 + 2b5 - 6b1) q^85 + (-2b7 + 2b5 + 4b3 + 2b1) * q^86 + (b6 - 5b4 - 2b2 + 1) * q^88 + (b7 - 2b5 + b3 + 2b1) * q^89 + (-b5 + b4 - b3 - 1) * q^91 + (-4b6 - 8b4 - 6) * q^92 + (-b6 + 3b4 + 4b2 - 11) * q^94 + (b6 - 7b4 - b2 + 12) q^95 + (-b7 + b5 - 10b3 + b1) q^97 - b1 * q^98
$\operatorname{Tr}(f)(q)$	$=$	$8 q - 14 q^{4} + 4 q^{10} - 6 q^{13} + 2 q^{14} + 34 q^{16} - 20 q^{17} - 24 q^{22} + 6 q^{23} - 34 q^{25} - 28 q^{26} + 18 q^{29} + 6 q^{35} - 36 q^{38} - 8 q^{40} + 34 q^{43} - 8 q^{49} + 18 q^{52} + 10 q^{53}+ \cdots + 78 q^{95}+O(q^{100})$ 8 * q - 14 * q^4 + 4 * q^10 - 6 * q^13 + 2 * q^14 + 34 * q^16 - 20 * q^17 - 24 * q^22 + 6 * q^23 - 34 * q^25 - 28 * q^26 + 18 * q^29 + 6 * q^35 - 36 * q^38 - 8 * q^40 + 34 * q^43 - 8 * q^49 + 18 * q^52 + 10 * q^53 + 16 * q^55 + 6 * q^56 - 20 * q^61 + 28 * q^62 - 18 * q^64 + 10 * q^65 + 24 * q^68 - 48 * q^74 - 4 * q^77 - 2 * q^79 - 48 * q^82 - 8 * q^88 - 6 * q^91 - 56 * q^92 - 72 * q^94 + 78 * q^95

$\beta_{1}$	$=$	$\nu$ v
$\beta_{2}$	$=$	$\nu^{2} + 4$ v^2 + 4
$\beta_{3}$	$=$	$( \nu^{5} + 8\nu^{3} + 9\nu ) / 2$ (v^5 + 8v^3 + 9v) / 2
$\beta_{4}$	$=$	$( \nu^{6} + 8\nu^{4} + 9\nu^{2} ) / 2$ (v^6 + 8v^4 + 9v^2) / 2
$\beta_{5}$	$=$	$( \nu^{5} + 10\nu^{3} + 21\nu ) / 2$ (v^5 + 10v^3 + 21v) / 2
$\beta_{6}$	$=$	$( \nu^{6} + 10\nu^{4} + 23\nu^{2} + 6 ) / 2$ (v^6 + 10v^4 + 23v^2 + 6) / 2
$\beta_{7}$	$=$	$( \nu^{7} + 12\nu^{5} + 41\nu^{3} + 36\nu ) / 2$ (v^7 + 12v^5 + 41v^3 + 36*v) / 2

Introduction

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Modular forms

Varieties

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Database

Properties

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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	819.2.c.d

Level	$819$
Weight	$2$
Character orbit	819.c
Analytic conductor	$6.540$
Analytic rank	$0$
Dimension	$8$
Inner twists	$2$

$\nu$	$=$	$\beta_1$ b1
$\nu^{2}$	$=$	$\beta_{2} - 4$ b2 - 4
$\nu^{3}$	$=$	$\beta_{5} - \beta_{3} - 6\beta_1$ b5 - b3 - 6*b1
$\nu^{4}$	$=$	$\beta_{6} - \beta_{4} - 7\beta_{2} + 25$ b6 - b4 - 7*b2 + 25
$\nu^{5}$	$=$	$-8\beta_{5} + 10\beta_{3} + 39\beta_1$ -8b5 + 10b3 + 39*b1
$\nu^{6}$	$=$	$-8\beta_{6} + 10\beta_{4} + 47\beta_{2} - 164$ -8b6 + 10b4 + 47*b2 - 164
$\nu^{7}$	$=$	$2\beta_{7} + 55\beta_{5} - 79\beta_{3} - 258\beta_1$ 2b7 + 55b5 - 79b3 - 258b1

$n$ :		e.g. 2-40 or 990-1000
Embeddings:		e.g. 1-3 or 64.8
Significant digits:
Format: