摘要
设X*是字母表X上的自由幺半群,以X*为顶点集构造一个语言图Γ(X*),引入语言图Γ(X*)的横截集的概念,给出了前缀码为极大前缀码的一个刻划,并推广了相关文献的结果.
Let X^* be the free monoid on the alphabet set X. The concept of a transversal of the language diagram Γ(X^*) is introduced by constructing a language diagram Γ(X^*) with X^* as the node set and a characterization of prefix code being maximal prefix code is given. Moreover, we extended the results of relevant reference.
出处
《数学的实践与认识》
CSCD
北大核心
2009年第2期158-160,共3页
Mathematics in Practice and Theory
基金
贵州省教育厅自然科学项目(黔教科2002311)
贵州科技基金项目(黔基合计字(2004)3047)