Semigroups, groups, and algebras of dynamical origin

Fuente: arXiv
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1. Verfasser: Nekrashevych, Volodymyr
Format: Preprint
Veröffentlicht: 2025
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author Nekrashevych, Volodymyr
author_facet Nekrashevych, Volodymyr
contents The paper is an overview of recent results on algebraic structures (semigroups, groupoids, algebras, inverse semigroups, and groups) associated with objects with a rich set of partial symmetries. We discuss etale groupoids and inverse semigroups, Steinberg algebras, C*-algebras, topological full groups etc.. In particular, we describe in detail the main definitions and constructions related to contracting self-similar inverse semigroups. They are illustrated by several examples, including the semigroup generated by the golden mean rotation and the tiling semigroup of the Penrose tiling.
format Preprint
id arxiv_https___arxiv_org_abs_2509_05524
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Semigroups, groups, and algebras of dynamical origin
Nekrashevych, Volodymyr
Operator Algebras
Dynamical Systems
Group Theory
The paper is an overview of recent results on algebraic structures (semigroups, groupoids, algebras, inverse semigroups, and groups) associated with objects with a rich set of partial symmetries. We discuss etale groupoids and inverse semigroups, Steinberg algebras, C*-algebras, topological full groups etc.. In particular, we describe in detail the main definitions and constructions related to contracting self-similar inverse semigroups. They are illustrated by several examples, including the semigroup generated by the golden mean rotation and the tiling semigroup of the Penrose tiling.
title Semigroups, groups, and algebras of dynamical origin
topic Operator Algebras
Dynamical Systems
Group Theory
url https://arxiv.org/abs/2509.05524