摘要
给出了非标准聚点的定义,并与标准聚点定义作了相应比较,讨论了非标准聚点的若干性质.
Firstly gives a definition of nonstandard accumulation point closure, and then compares it with the standard accumulation point closure, some properties of nonstandard accumulation point closure are discussed.
出处
《大连铁道学院学报》
2001年第3期25-27,共3页
Journal of Dalian Railway Institute