关于D-空间的研究

Research on D-Space

讨论了D 空间的拓扑性质 ,并得到了一些很有用的覆盖性质 .最后讨论了D 空间和其它空间的关系 ,在不要求分离性公理的假设下 ,给出Van .

We discussed the properties of D Space, and obtained some useful covering properties;At last, we discussed the relationship of D Space with other spaces, and gave a negative answer to the problem of Van Douwen without the hypothesis of the separation axioms.