Artinian and noetherian partial skew groupoid rings
Abstract
Let be a partial action of a groupoid on a non-associative ring and let be the associated partial skew groupoid ring. We show that if is global and unital, then is left (right) artinian if and only if is left (right) artinian and for all but finitely many . We use this result to prove that if is unital and is alternative, then is left (right) artinian if and only if is left (right) artinian and for all but finitely many . Both of these results apply to partial skew group rings, and in particular they generalize a result by J. K. Park for classical skew group rings, i.e. the case when is unital and associative, and is a group which acts globally on . Moreover, we provide two applications of our main result. Firstly, we generalize I. G. Connell's classical result for group rings by giving a characterization of artinian (non-associative) groupoid rings. This result is in turn applied to partial group algebras. Secondly, we give a characterization of artinian Leavitt path algebras. At the end of the article, we use globalization to analyse noetherianity and artinianity of partial skew groupoid rings as well as establishing two Maschke-type results, thereby generalizing results by Ferrero and Lazzarin from the group graded case to the groupoid situation.
Keywords
Cite
@article{arxiv.1603.02237,
title = {Artinian and noetherian partial skew groupoid rings},
author = {Patrik Nystedt and Johan Öinert and Héctor Pinedo},
journal= {arXiv preprint arXiv:1603.02237},
year = {2016}
}
Comments
18 pages. Replacement of the previous version; "Artinian partial skew groupoid rings"