四阶方阵积和式的一种计算方法及应用

A Method and Application of Fourth-order Square Matrix

积和式是一种特殊的矩阵函数，它在组合设计、组合矩阵论和概率论等领域都有很广泛的应用，特别是在组合矩阵论中描述组合问题时有着不可替代的优势。本文利用分块矩阵思想得到了四阶方阵积和式的一个求法。

Permanent is a special matrix function. It is widely used in combinational design, combinational matrix theory and probability theory and so on. In particular, it works indispensably and effectively for combinational problems in combinational theory. This paper induces a new method to compute permanents exploit the idea of fourth-order square matrix.