homotopy group

The theory of homotopy group with multiple base points

多基点同伦群理论

The most important content in Homotopy theory is to calculate the homotopy group of a topological space . Now the most useful method to calculate homotopy group is spectral sequence .

同伦论的重要内容就是计算空间的同伦群，目前计算同伦群的最重要方法是谱序列。

Homotopy and fundamental group in fuzzy topology

不分明拓扑空间的同伦和基本群

( I , p ) - homotopy inverse and group homotopy inverse are defined in this paper on categories of topological space with base point . Their existence and properties are also presented .

该文在点标拓扑空间范畴中引进了（i，p）-同伦逆和群同伦逆的概念，并讨论了它们存在的条件和性质。

Cohomology operation belongs to Homotopy theory and can be used to calculate the homotopy group of topological space . Further more it has a bijection relationship with the cohomology group of the corresponding Eilenberg-MacLane space .

上同调算子也是同伦论的一部分重要内容，可以用来计算空间的同伦群，并且与相应的Eilenberg-MacLane空间的上同调群存在双射。