In this paper,we prove that if H is a cocomutative finite dimensional weak Hopf alegbra and A is a commutative H-module algebra,A is integral over its invariant AH.

• 主要研究关于弱Hopf代数的模代数在其不变量上的积分；设H是余可换的有限维的弱Hopf代数；A是可换的左H-模代数；那么A是其不变量AH上的积分.