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Abstract: For any field $\K$ and integer $n\geq 2$ we consider the Leavitt algebra$L \Kn$; for any integer $d\geq 1$ we form the matrix ring $S =M dL \Kn$. $S$ is an associative algebra, but we view $S$ as a Lie algebrausing the bracket $a,b=ab-ba$ for $a,b \in S$. We denote this Lie algebra as$S^-$, and consider its Lie subalgebra $S^-,S^-$. In our main result, we showthat $S^-,S^-$ is a simple Lie algebra if and only if char$\K$ divides$n-1$ and char$\K$ does not divide $d$. In particular, when $d=1$ we get that$L \Kn^-,L \Kn^-$ is a simple Lie algebra if and only if char$\K$divides $n-1$.



Autor: Gene Abrams, Darren Funk-Neubauer

Fuente: https://arxiv.org/







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