Dissertations, Theses, and Capstone Projects

Date of Degree

9-2024

Document Type

Dissertation

Degree Name

Ph.D.

Program

Mathematics

Advisor

Benjamin Steinberg

Committee Members

Alina Vdovina

Vladimir Shpilrain

Subject Categories

Algebra | Discrete Mathematics and Combinatorics | Dynamical Systems | Geometry and Topology

Keywords

etale groupoid algebra, Steinberg algebra, groupoid, Leavitt path algebra, inverse semigroup algebra, chain conditions, semisimplicity, associative ring

Abstract

Let R be a unital commutative ring and G an ample groupoid. Using the topology of the groupoid G, Steinberg defined an étale groupoid algebra RG. These étale groupoid algebras generalize various algebras, including group algebras, commutative algebras over a field generated by idempotents, traditional groupoid algebras, Leavitt path algebras, higher-rank graph algebras, and inverse semigroup algebras. Steinberg later characterized the classical chain conditions for étale groupoid algebras. In this work, we characterize categorically noetherian and artinian, locally noetherian and artinian, and semisimple étale groupoid algebras, thereby generalizing existing results for Leavitt path algebras and introducing new results for inverse semigroup algebras.

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