关于半拓扑半群$\boldsymbol{B}_{\omega}^{\mathscr{F}}$当一个族$\mathscr{F}$由$\omega的归纳非空子集组成时$

Q3 Mathematics Matematychni Studii Pub Date : 2022-12-11 DOI:10.30970/ms.59.1.20-28
O. Gutik, M. Mykhalenych
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引用次数: 0

摘要

让 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 是族的双环半群的推广 $\mathscr{F}$ 的 ${\omega}$的闭子集 $\omega$ 这是在 \cite{Gutik-Mykhalenych=2020}我们研究半群的拓扑结构 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 为了家庭 $\mathscr{F}$ 归纳的 ${\omega}$的闭子集 $\omega$。推广了双环半群拓扑化的Eberhart-Selden和Bertman-West结果 \cite{Bertman-West-1976, Eberhart-Selden=1969} 并证明了半群上的每一个Hausdorff位移连续拓扑 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 是离散的,如果一个Hausdorff半拓扑半群 $S$ 包含 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 作为真密子半群 $S\setminus\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 是一个理想的 $S$。此外,我们还证明了以下二分法:上的每一个Hausdorff局部紧移-连续拓扑 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 带邻接零的是紧的或离散的。由上一个结果,我们得到了上的每一个Hausdorff局部紧半群拓扑 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ 具有伴零的半群是离散的,并且半群上的每一个Hausdorff局部紧移连续拓扑 $\boldsymbol{B}_{\omega}^{\mathscr{F}}\sqcup I$ 具有相邻紧致理想的 $I$ 是紧凑的还是理想的 $I$ 关于某些半群的局部紧拓扑的许多结果在半群的扩展上是开的 $\boldsymbol{B}_{\omega}^{\mathscr{F}}$.
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On a semitopological semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ when a family $\mathscr{F}$ consists of inductive non-empty subsets of $\omega$
Let $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ be the bicyclic semigroup extension for the family $\mathscr{F}$ of ${\omega}$-closed subsets of $\omega$ which is introduced in \cite{Gutik-Mykhalenych=2020}.We study topologizations of the semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ for the family $\mathscr{F}$ of inductive ${\omega}$-closed subsets of $\omega$. We generalize Eberhart-Selden and Bertman-West results about topologizations of the bicyclic semigroup \cite{Bertman-West-1976, Eberhart-Selden=1969} and show that every Hausdorff shift-continuous topology on the semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ is discrete and if a Hausdorff semitopological semigroup $S$ contains $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ as a proper dense subsemigroup then $S\setminus\boldsymbol{B}_{\omega}^{\mathscr{F}}$ is an ideal of $S$. Also, we prove the following dichotomy: every Hausdorff locally compact shift-continuous topology on $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ with an adjoined zero is either compact or discrete. As a consequence of the last result we obtain that every Hausdorff locally compact semigroup topology on $\boldsymbol{B}_{\omega}^{\mathscr{F}}$ with an adjoined zero is discrete and every Hausdorff locally compact shift-continuous topology on the semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}\sqcup I$ with an adjoined compact ideal $I$ is either compact or the ideal $I$ is open, which extent many results about locally compact topologizations of some classes of semigroups onto extensions of the semigroup $\boldsymbol{B}_{\omega}^{\mathscr{F}}$.
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来源期刊
Matematychni Studii
Matematychni Studii Mathematics-Mathematics (all)
CiteScore
1.00
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0.00%
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38
期刊介绍: Journal is devoted to research in all fields of mathematics.
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