arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0707.3170cs.LO
收藏

完全抽象的归纳定义及其论域性质

Inductive Definition and Domain Theoretic Properties of Fully Abstract

Vladimir Sazonov

摘要:

PCF和PCF^+的完全抽象类型化模型的构造(即,PCF +“并行条件函数”)。它是基于一般概念的顺序计算策略和故意一致的非确定性策略介绍了作者在七十年代。虽然这些策略的概念是旧的,但完全抽象模型的定义是新的,因为它是在有限类型层次结构中逐层给出的。为了证明这些模型的完全抽象性和非dcpo域理论性质,发展了一个计算策略理论。这也是一种替代,在某种意义上,类似于后来的游戏策略语义学方法,阿布拉姆斯基,Jagadeesan和Malacaria; Hyland和Ong;以及Nickau。在PCF和PCF^+的两种情况下,从数值函数到任何给定类型都分别存在可定义的泛(满射)泛函,这也使得这些模型中的每一个直到同构都是唯一的。虽然这类模型是非Ω-完备的,因此在传统术语中是不连续的,但它们也被证明是序列完备的(ω-完备性的弱化形式),“自然”连续(关于现有的有向“逐点”,或“自然”lubs),以及“自然”omega-algebraic和“自然”有界完备--将域理论的普通概念适当地推广到非dcpos的情况。

英文摘要:

A construction of fully abstract typed models for PCF and PCF^+ (i.e., PCF + "parallel conditional function"), respectively, is presented. It is based on general notions of sequential computational strategies and wittingly consistent non-deterministic strategies introduced by the author in the seventies. Although these notions of strategies are old, the definition of the fully abstract models is new, in that it is given level-by-level in the finite type hierarchy. To prove full abstraction and non-dcpo domain theoretic properties of these models, a theory of computational strategies is developed. This is also an alternative and, in a sense, an analogue to the later game strategy semantics approaches of Abramsky, Jagadeesan, and Malacaria; Hyland and Ong; and Nickau. In both cases of PCF and PCF^+ there are definable universal (surjective) functionals from numerical functions to any given type, respectively, which also makes each of these models unique up to isomorphism. Although such models are non-omega-complete and therefore not continuous in the traditional terminology, they are also proved to be sequentially complete (a weakened form of omega-completeness), "naturally" continuous (with respect to existing directed "pointwise", or "natural" lubs) and also "naturally" omega-algebraic and "naturally" bounded complete -- appropriate generalisation of the ordinary notions of domain theory to the case of non-dcpos.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑