Throughout this paper, we work over a fixed field k. Let H be a finite dimensional cocommutative Hopf algebra and A an H-module algebra. A #~H is the associated crossed product.
设H是域k上的有限维余交换Hopf代数,A是H-模代数,AσH是相应的crossed积。
Throughout this paper, we work over a fixed field k. Let H be a finite dimensional cocommutative Hopf algebra and A an H-module algebra. A # ~ H is the associated crossed product.