在Yetter—Drinfeld模范畴中引入弱Hopf代数和弱Hopf模的概念,从而得到了Yetter—Drinfeld模范畴中弱Hopf模的基本定理。
The definitions of weak Hopf algebra and weak Hopf module in Yetter-Drinfeld module categories are intro-duced. And the fundamental theorem for weak Hopf modules in Yetter-Drinfeld module categories is obtained.