摘要
给出基于量子逻辑的下推自动机(l-VPDA)的概念,提出广义的子集构造方法,进而证明了一般的l-VPDA与状态转移为分明函数且具有量子终态的l-VPDA的等价性.利用此等价性,给出了量子上下文无关语言的代数刻画与层次刻画,并籍此证明了量子上下文无关语言关于正则运算的封闭性.最后,说明了量子下推自动机和量子上下文无关文法(l-VCFG)的等价性.
In this paper, an orthomodular lattice-valued pushdown automaton (l-VPDA) is introduced. This paper also provides the means of general subset-construction, and further proves the fact that an l-VPDA can accept the same l-valued language by final states and by another l-VPDA, with crisp transition relation and quantum final states at the same time. By using these relations, this paper is able to establish some algebraic level characterizations of orthomodular lattice-valued context-free languages and also focuses on the closed properties of these l-valued languages in details under standard operative conditions. Finally, this paper presents that an arbitrary orthomodular lattice-valued context-free grammar (l-VCFG) are mutually equivalently constructed with a l-VPDA, respectively.
出处
《软件学报》
EI
CSCD
北大核心
2010年第9期2107-2117,共11页
Journal of Software
基金
国家自然科学基金No.10571112
陕西师范大学青年科技项目No.200701008~~
关键词
量子逻辑
正交模格
量子下推自动机
量子上下文无关语言
量子上下文无关文法
quantum logic
orthomodular lattice
orthomodular lattice-valued pushdown automata
orthomodular lattice-valued context-free language
orthomodular lattice-valued context-free grammar