本文研究了弱模代数上的弱Galois扩张问题,利用不变子函子与积分方法,获得了弱Galois扩张的一个充分必要条件,推广了Cohen,Fishman和Montgomery的对应结果.
In this paper,we mainly study the problem of weak Galois extensions over weak module algebras,and by using these methods of invariant functors and integrals,give a sufficent and necessary condition for weak Galois extensions,which is a generalization of the corresponding result given by Cohen,Fishman and Montgomery.