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arXiv 2202.08308math.GNmath.GR
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关于有界有限秩半拓扑对称逆半群的弱紧性注记

A note on feebly compact semitopological symmetric inverse semigroups of a bounded finite rank

Oleg Gutik

AI总结:

本文研究有限秩对称逆半群 $\mathscr{I}_λ^n$ 上的移位连续 $T_1$ 拓扑,刻画弱紧性与序列预紧性的等价关系,并证明弱 $ω$ 有界情形必为紧拓扑。

摘要:

我们研究秩不超过 n 的有限变换对称逆半群 $\mathscr{I}_λ^n$ 上的弱紧、移位连续 $T_1$ 拓扑。证明了此类 $T_1$ 拓扑序列预紧当且仅当它是弱紧的。同时表明,$\mathscr{I}_λ^n$ 上每个移位连续、弱 $ω$ 有界的 $T_1$ 拓扑都是紧的。

英文摘要:

We study feebly compact shift-continuous $T_1$-topologies on the symmetric inverse semigroup $\mathscr{I}_λ^n$ of finite transformations of the rank $\leqslant n$. It is proved that such $T_1$-topology is sequentially pracompact if and only if it is feebly compact. Also, we show that every shift-continuous feebly $ω$-bounded $T_1$-topology on $\mathscr{I}_λ^n$ is compact.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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