There exists a counterexample showing that a compact topological space is not necessarily a sequentially compact space.
有反例表明一个紧致拓扑空间不一定是序列紧致的拓扑空间。
Aim to study the existence of the extreme points of a compact set in linear topological space.
目的研究线性拓扑空间中紧集端点存在性问题。
According to the concept of topological chain recurrent, a special flow "non-compact flow" is introduced on metric space, some properties and examples of this flow are given.
通过拓扑链回归概念，在非紧致度量空间中引入一类特殊的流———非紧致流，同时给出该类流的一些特性和实例。
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