该文对于Hopf代数H和交换代数A,给出了lazy左2-上循环σ的定义,并且证得lazy 2-上循环和lazy H-cleft对象之间存在着对应关系.
In this paper,the author defines the lazy left 2-cocyclesσ:H× H→A for a Hopf algebra H and a commutative algebra A,and shows that there exists a correspondence between the lazy 2-cocycles and the lazy H-cleft objects.