Distilled version of nbtopsscratch28515.ps - arXiv

2 downloads 0 Views 82KB Size Report
(HoldForm[x])i , {i, 14}]]. Next we define the commands c, Lie product, and ∆ the function Krönecker delta: c[x_, y_] : x.y y.x;. ∆i_,j_ : If[i j, 1, 0]. Generic Matrix.
The Lie algebra splitg2 with Mathematica using Zorn’s matrices. Pablo Alberca Bjerregaard Department of Applied Mathematics Escuela Técnica Superior de Ingeniería Industrial Campus de El Ejido University of Málaga Málaga −Spain E−Mail:[email protected]

Cándido Martín González Department of Algebra, Geometry and Topology Facultad de Ciencias University of Málaga Campus de Teatinos Málaga −Spain E−Mail:[email protected] 2001.

Abstract. We will obtain in this paper a generic expression of any element in split g2 ,the Lie algebra of the derivations of the split octonions Os over an arbitrary field. For this purpose, we will use the Zorn’s matrices. We will also compute the multiplication table of this Lie algebra.

à Previous commands First of all, we define some commands that will be usefull in what follows. The first ones are vec, vectorial product, esc, scalar product and prod, the Zorn’s matrices product: vec@8x_, y_, z_