The semigroup of finite partial order isomorphisms of a bounded rank of an infinite linear ordered set

Fuente: arXiv
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Main Authors: Gutik, Oleg, Shchypel, Maksym
Format: Preprint
Published: 2024
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author Gutik, Oleg
Shchypel, Maksym
author_facet Gutik, Oleg
Shchypel, Maksym
contents We study algebraic properties of the semigroup $\mathscr{O\!\!I\!}_n(L)$ of finite partial order isomorphisms of the rank $\leq n$ of an infinite linearly ordered set $(L,\leqslant)$. In particular we describe its idempotents, the natural partial order and Green's relations on $\mathscr{O\!\!I\!}_n(L)$. It is proved that the semigroup $\mathscr{O\!\!I\!}_n(L)$ is stable and it contains tight ideal series. Moreover, we show that the semigroup $\mathscr{O\!\!I\!}_n(L)$ admits only Rees' congruences and every its homomorphic image is a semigroup with tight ideal series.
format Preprint
id arxiv_https___arxiv_org_abs_2411_03268
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle The semigroup of finite partial order isomorphisms of a bounded rank of an infinite linear ordered set
Gutik, Oleg
Shchypel, Maksym
Group Theory
20M15, 20M50, 18B40
We study algebraic properties of the semigroup $\mathscr{O\!\!I\!}_n(L)$ of finite partial order isomorphisms of the rank $\leq n$ of an infinite linearly ordered set $(L,\leqslant)$. In particular we describe its idempotents, the natural partial order and Green's relations on $\mathscr{O\!\!I\!}_n(L)$. It is proved that the semigroup $\mathscr{O\!\!I\!}_n(L)$ is stable and it contains tight ideal series. Moreover, we show that the semigroup $\mathscr{O\!\!I\!}_n(L)$ admits only Rees' congruences and every its homomorphic image is a semigroup with tight ideal series.
title The semigroup of finite partial order isomorphisms of a bounded rank of an infinite linear ordered set
topic Group Theory
20M15, 20M50, 18B40
url https://arxiv.org/abs/2411.03268