The Kumjian-Pask algebras are path algebras associated to higher-rank graphs, and generalize the Leavitt path algebras. We study the center of simple Kumjian-Pask algebras and characterize commutative Kumjian-Pask algebras.
@article{arxiv.1209.2627,
title = {The center of a Kumjian-Pask algebra},
author = {Jonathan Henry Brown and Astrid an Huef},
journal= {arXiv preprint arXiv:1209.2627},
year = {2012}
}