加载中…
For a Hausdorff space we denote be the family of all closed subsets of . In this paper we continue to research relationships between closure -type properties of hyperspaces over a space and covering properties of . We investigate selectors for sequence of subsets of the space with the -topology and the upper Fell topology.

生成讲解博客的中文版本

生成AI智能校验的中文版本