LMFDB - Artin representation 2.1600.8t17.a.a

Basic invariants

Dimension:	$2$
Group:	$C_4\wr C_2$
Conductor:	$1600$$\medspace = 2^{6} \cdot 5^{2} $
Artin stem field:	Galois closure of 8.0.32768000.1
Galois orbit size:	$2$
Smallest permutation container:	$C_4\wr C_2$
Parity:	odd
Determinant:	1.5.4t1.a.b
Projective image:	$D_4$
Projective stem field:	Galois closure of 4.2.2000.1

Defining polynomial

$f(x)$

$=$

$ x^{8} + 2x^{4} + 5 $

x^8 + 2*x^4 + 5

The roots of $f$ are computed in $\Q_{ 101 }$ to precision 7.

Roots:

$r_{ 1 }$	$=$	$ 5 + 80\cdot 101 + 6\cdot 101^{2} + 81\cdot 101^{3} + 82\cdot 101^{4} + 64\cdot 101^{5} + 26\cdot 101^{6} +O(101^{7})$ 5 + 80101 + 6101^2 + 81101^3 + 82101^4 + 64101^5 + 26101^6+O(101^7)
$r_{ 2 }$	$=$	$ 27 + 93\cdot 101 + 60\cdot 101^{2} + 4\cdot 101^{3} + 88\cdot 101^{4} + 2\cdot 101^{5} + 33\cdot 101^{6} +O(101^{7})$ 27 + 93101 + 60101^2 + 4101^3 + 88101^4 + 2101^5 + 33101^6+O(101^7)
$r_{ 3 }$	$=$	$ 33 + 43\cdot 101 + 60\cdot 101^{2} + 10\cdot 101^{3} + 95\cdot 101^{4} + 97\cdot 101^{5} + 80\cdot 101^{6} +O(101^{7})$ 33 + 43101 + 60101^2 + 10101^3 + 95101^4 + 97101^5 + 80101^6+O(101^7)
$r_{ 4 }$	$=$	$ 50 + 17\cdot 101 + 7\cdot 101^{2} + 62\cdot 101^{3} + 97\cdot 101^{4} + 64\cdot 101^{5} + 22\cdot 101^{6} +O(101^{7})$ 50 + 17101 + 7101^2 + 62101^3 + 97101^4 + 64101^5 + 22101^6+O(101^7)
$r_{ 5 }$	$=$	$ 51 + 83\cdot 101 + 93\cdot 101^{2} + 38\cdot 101^{3} + 3\cdot 101^{4} + 36\cdot 101^{5} + 78\cdot 101^{6} +O(101^{7})$ 51 + 83101 + 93101^2 + 38101^3 + 3101^4 + 36101^5 + 78101^6+O(101^7)
$r_{ 6 }$	$=$	$ 68 + 57\cdot 101 + 40\cdot 101^{2} + 90\cdot 101^{3} + 5\cdot 101^{4} + 3\cdot 101^{5} + 20\cdot 101^{6} +O(101^{7})$ 68 + 57101 + 40101^2 + 90101^3 + 5101^4 + 3101^5 + 20101^6+O(101^7)
$r_{ 7 }$	$=$	$ 74 + 7\cdot 101 + 40\cdot 101^{2} + 96\cdot 101^{3} + 12\cdot 101^{4} + 98\cdot 101^{5} + 67\cdot 101^{6} +O(101^{7})$ 74 + 7101 + 40101^2 + 96101^3 + 12101^4 + 98101^5 + 67101^6+O(101^7)
$r_{ 8 }$	$=$	$ 96 + 20\cdot 101 + 94\cdot 101^{2} + 19\cdot 101^{3} + 18\cdot 101^{4} + 36\cdot 101^{5} + 74\cdot 101^{6} +O(101^{7})$ 96 + 20101 + 94101^2 + 19101^3 + 18101^4 + 36101^5 + 74101^6+O(101^7)

Generators of the action on the roots $r_1, \ldots, r_{ 8 }$

Cycle notation
$(1,8)(2,7)(3,6)(4,5)$
$(2,3,7,6)$
$(1,2)(3,4)(5,6)(7,8)$
$(2,7)(3,6)$
$(1,5,8,4)(2,6,7,3)$

Character values on conjugacy classes

Size	Order	Action on $r_1, \ldots, r_{ 8 }$	Character value	Complex conjugation
$1$	$1$	$()$	$2$
$1$	$2$	$(1,8)(2,7)(3,6)(4,5)$	$-2$
$2$	$2$	$(2,7)(3,6)$	$0$
$4$	$2$	$(1,2)(3,4)(5,6)(7,8)$	$0$	✓
$1$	$4$	$(1,5,8,4)(2,6,7,3)$	$2 \zeta_{4}$
$1$	$4$	$(1,4,8,5)(2,3,7,6)$	$-2 \zeta_{4}$
$2$	$4$	$(2,3,7,6)$	$\zeta_{4} - 1$
$2$	$4$	$(2,6,7,3)$	$-\zeta_{4} - 1$
$2$	$4$	$(1,8)(2,6,7,3)(4,5)$	$-\zeta_{4} + 1$
$2$	$4$	$(1,8)(2,3,7,6)(4,5)$	$\zeta_{4} + 1$
$2$	$4$	$(1,5,8,4)(2,3,7,6)$	$0$
$4$	$4$	$(1,7,8,2)(3,4,6,5)$	$0$
$4$	$8$	$(1,3,4,7,8,6,5,2)$	$0$
$4$	$8$	$(1,7,5,3,8,2,4,6)$	$0$

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 $\F_{q}$
Belyi maps

Introduction

L-functions

Modular forms

Varieties

Fields

Representations

Groups

Database

Properties

Related objects

Downloads

Learn more

Basic invariants

Defining polynomial

Generators of the action on the roots $r_1, \ldots, r_{ 8 }$

Character values on conjugacy classes

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	2.1600.8t17.a.a
Dimension	$2$
Group	$C_4\wr C_2$
Conductor	$1600$
Root number	not computed
Indicator	$0$

$r_{ 1 }$	$=$	\( 5 + 80\cdot 101 + 6\cdot 101^{2} + 81\cdot 101^{3} + 82\cdot 101^{4} + 64\cdot 101^{5} + 26\cdot 101^{6} +O(101^{7})\) 5 + 80101 + 6101^2 + 81101^3 + 82101^4 + 64101^5 + 26101^6+O(101^7)
$r_{ 2 }$	$=$	\( 27 + 93\cdot 101 + 60\cdot 101^{2} + 4\cdot 101^{3} + 88\cdot 101^{4} + 2\cdot 101^{5} + 33\cdot 101^{6} +O(101^{7})\) 27 + 93101 + 60101^2 + 4101^3 + 88101^4 + 2101^5 + 33101^6+O(101^7)
$r_{ 3 }$	$=$	\( 33 + 43\cdot 101 + 60\cdot 101^{2} + 10\cdot 101^{3} + 95\cdot 101^{4} + 97\cdot 101^{5} + 80\cdot 101^{6} +O(101^{7})\) 33 + 43101 + 60101^2 + 10101^3 + 95101^4 + 97101^5 + 80101^6+O(101^7)
$r_{ 4 }$	$=$	\( 50 + 17\cdot 101 + 7\cdot 101^{2} + 62\cdot 101^{3} + 97\cdot 101^{4} + 64\cdot 101^{5} + 22\cdot 101^{6} +O(101^{7})\) 50 + 17101 + 7101^2 + 62101^3 + 97101^4 + 64101^5 + 22101^6+O(101^7)
$r_{ 5 }$	$=$	\( 51 + 83\cdot 101 + 93\cdot 101^{2} + 38\cdot 101^{3} + 3\cdot 101^{4} + 36\cdot 101^{5} + 78\cdot 101^{6} +O(101^{7})\) 51 + 83101 + 93101^2 + 38101^3 + 3101^4 + 36101^5 + 78101^6+O(101^7)
$r_{ 6 }$	$=$	\( 68 + 57\cdot 101 + 40\cdot 101^{2} + 90\cdot 101^{3} + 5\cdot 101^{4} + 3\cdot 101^{5} + 20\cdot 101^{6} +O(101^{7})\) 68 + 57101 + 40101^2 + 90101^3 + 5101^4 + 3101^5 + 20101^6+O(101^7)
$r_{ 7 }$	$=$	\( 74 + 7\cdot 101 + 40\cdot 101^{2} + 96\cdot 101^{3} + 12\cdot 101^{4} + 98\cdot 101^{5} + 67\cdot 101^{6} +O(101^{7})\) 74 + 7101 + 40101^2 + 96101^3 + 12101^4 + 98101^5 + 67101^6+O(101^7)
$r_{ 8 }$	$=$	\( 96 + 20\cdot 101 + 94\cdot 101^{2} + 19\cdot 101^{3} + 18\cdot 101^{4} + 36\cdot 101^{5} + 74\cdot 101^{6} +O(101^{7})\) 96 + 20101 + 94101^2 + 19101^3 + 18101^4 + 36101^5 + 74101^6+O(101^7)