Socle theory for Leavitt path algebras of arbitrary graphs
Abstract
The main aim of the paper is to give a socle theory for Leavitt path algebras of arbitrary graphs. We use both the desingularization process and combinatorial methods to study Morita invariant properties concerning the socle and to characterize it, respectively. Leavitt path algebras with nonzero socle are described as those which have line points, and it is shown that the line points generate the socle of a Leavitt path algebra, extending so the results for row-finite graphs in the previous paper [12] (but with different methods). A concrete description of the socle of a Leavitt path algebra is obtained: it is a direct sum of matrix rings (of finite or infinite size) over the base field. New proofs of the Graded Uniqueness and of the Cuntz-Krieger Uniqueness Theorems are given, shorthening significantly the original ones.
Keywords
Cite
@article{arxiv.0802.1198,
title = {Socle theory for Leavitt path algebras of arbitrary graphs},
author = {Gonzalo Aranda Pino and Dolores Martin Barquero and Candido Martin Gonzalez and Mercedes Siles Molina},
journal= {arXiv preprint arXiv:0802.1198},
year = {2008}
}
Comments
20 pgs