摘要
本文在学习［１，２］之后，首先给出了扭曲余积关于量子余交换的一个重要性质；在学习［３］之后，又证明了广义相关Ｈｏｐｆ模的对偶模仍是广义相关Ｈｏｐｆ模，从而推广了［３］中的相关结论。
In this paper, we first give an important property of twisting coproduct of quantum cocommutativity after studing the paper [1, 2]; Then, we prove that the duality module of general relative Hopf module is still a general relative Hopf module, thus extend the relatived conclusions of [3].
