摘要
本文首先给出了反例，说明文献［１］中引理１的错误，从而揭示了该文中两个主要定理的证明存在问题。然后利用布尔随机向量联合分布的分解式，给出了新的证明方法。
This paper gives a counterexample,and points out the error of lemma l in paper .on the basis of a decomposition formula of joint distribution of the Boolean random vectors,the proof of the main result in paper is presented
