摘要
首先介绍有关π映射的若干进一步性质,然后引进^∑上字的初等变换,研究它们与π映射间的关系,得到了若干有用的结果。
This paper first presents some further properties on the π map, then introduces elementary transformations of a word on ∑, studies the relation between them and the π map, and gains some useful results.
出处
《计算机与现代化》
2005年第10期1-2,7,共3页
Computer and Modernization
关键词
二维字母表
双向连接运算
Π映射
初等变换
two-dimensional alphabet
two-sided eoneatenation operation
π map
elementary transformation
