中文摘要：

,该文讨论多圆盘上Hardy空间上的Toeplitz算子,使用Berezin变换和调和扩张给出两个Toeplitz算子交换的一个充要条件.

英文摘要：

In this paper we discuss the commutativity of Toeplitz operators on the Hardy space over the polydisk. Using the Berezin transform and the harmonic extension, we obtain a necessary and sufficient condition for two Toeplitz operators to commute with each other.