In this paper the local compactness of the nonempty closed subsets hyperspaces with locallyfinite topology is discussed.
本文讨论了赋予局部有限拓扑的非空闲子集超空间的局部紧性。
2
The connectedness of the non-empty closed subsets hyperspace with locallyfinite topology is discussed and a cardinal function called discrete degree is introduced.
In this paper, we discuss some local covering properties of 2 X with locallyfinite topology, and prove that some covering properties are equivalent to local properties in 2 X.