Presentation of monoids generated by a projection and an involution

Fuente: arXiv
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Main Authors: Caron, Pascal, Luque, Jean-Gabriel, Patrou, Bruno
Format: Preprint
Published: 2024
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author Caron, Pascal
Luque, Jean-Gabriel
Patrou, Bruno
author_facet Caron, Pascal
Luque, Jean-Gabriel
Patrou, Bruno
contents Monoids generated by elements of order two appear in numerous places in the literature. For example, Coxeter reflection groups in geometry, Kuratowski monoids in topology, various monoids generated by regular operations in language theory and so on. In order to initiate a classification of these monoids, we are interested in the subproblem of monoids, called strict 2-PIMs, generated by an involution and an idempotent. In this case we show, when the monoid is finite, that it is generated by a single equation (in addition to the two defining the involution and the idempotent). We then describe the exact possible forms of this equation and classify them. We recover Kuratowski's theorem as a special case of our study.
format Preprint
id arxiv_https___arxiv_org_abs_2402_00417
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Presentation of monoids generated by a projection and an involution
Caron, Pascal
Luque, Jean-Gabriel
Patrou, Bruno
Group Theory
Formal Languages and Automata Theory
Monoids generated by elements of order two appear in numerous places in the literature. For example, Coxeter reflection groups in geometry, Kuratowski monoids in topology, various monoids generated by regular operations in language theory and so on. In order to initiate a classification of these monoids, we are interested in the subproblem of monoids, called strict 2-PIMs, generated by an involution and an idempotent. In this case we show, when the monoid is finite, that it is generated by a single equation (in addition to the two defining the involution and the idempotent). We then describe the exact possible forms of this equation and classify them. We recover Kuratowski's theorem as a special case of our study.
title Presentation of monoids generated by a projection and an involution
topic Group Theory
Formal Languages and Automata Theory
url https://arxiv.org/abs/2402.00417