摘要
列举并证明了多种使得同伦扩张定理不成立的拓扑空间对 。
In this paper, we provide and prove that there are more kinds of pairs of spaces that do not have the absolute homotopy expansion property so that the reason why the absolute expansion property loses efficacy is further explained.
出处
《宜春学院学报》
2004年第2期12-13,共2页
Journal of Yichun University
关键词
同伦扩张
空间对
一点粘合
homotopy expansion, pair of spaces, union of spaces with one commen point
