摘要
本文定义了一类适于研究一般n维四阶Hadamard 矩阵的逻辑函数,即H_4函数,并借助于H_4函数,讨论了n维四阶Hadamard矩阵的性质,构造了某些计数问题,并且给出了几个等价判别条件。
A new class of logical functions (called H4 functions) is defined in this paper. And by the usage of H4 functions , we discuss some properties , construction methods and counting problems of Hadamard matrices of order four . At the same time , a few sufficient and necessary conditions are presented.
出处
《信息安全与通信保密》
1999年第2期56-62,共7页
Information Security and Communications Privacy
