一句话:研究 VASS 语言的正则可分离性,并讨论一维、覆盖、整数与交换 VASS 等可判定子类。
论文研究带状态向量加法系统(VASS)语言的正则可分离性问题:给定两个 VASS 语言 K 和 L,判定是否存在一个正则语言 R,使得 K 包含于 R 且 R 与 L 不相交。该问题在一般情况下是否可判定仍是开放问题。已有结果仅覆盖若干子类,包括一维 VASS、VASS 覆盖语言、整数 VASS 语言以及交换 VASS 语言。论文围绕这一问题提出一种研究路径,并借助这些子类刻画可判定性边界。摘要主要说明问题背景与已知可判定情形,未展开具体技术细节或复杂度结果。
We study the problem of regular separability of languages of vector addition systems with states (VASS). It asks whether for two given VASS languages K and L, there exists a regular language R that includes K and is disjoint from L. While decidability of the problem in full generality remains an open question, there are several subclasses for which decidability has been shown: It is decidable for (i) one-dimensional VASS, (ii) VASS coverability languages, (iii) languages of integer VASS, and (iv) commutative VASS languages.