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arXiv 1802.07508cs.LO
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具有泛关系的关系逻辑的对偶表基判定过程(扩展版)

A Dual Tableau-based Decision Procedure for a Relational Logic with the Universal Relation (Extended Version)

Domenico Cantone, Marianna Nicolosi-Asmundo, Ewa Orłowska

摘要:

我们提出了第一个结果,对使用蕴涵在方的关系对偶表为基础的决策程序。为此,我们引入了RL(1)的一个片断,它允许一个限制形式的复合,(R ; S)或(R ; 1),其中(R ; S)的左子项R只允许是常数1,或一个既不包含补算子也不包含常数1的布尔项,而在(R ; 1),R只能是一个布尔项,涉及关系变量和运算符的交集和并集。我们证明了可判定性的片段定义一个双tableau为基础的决策过程,一个合适的阻塞机制,并在那里的规则分解组合公式进行修改,以处理常数1,同时保持终止。该片段适当地包括在以前的工作中提出的逻辑,因此,它允许一个表示,除其他外,多模态逻辑K与工会和交集的可访问性关系,和描述逻辑ALC与工会和交集的角色。

英文摘要:

We present a first result towards the use of entailment in- side relational dual tableau-based decision procedures. To this end, we introduce a fragment of RL(1) which admits a restricted form of composition, (R ; S) or (R ; 1), where the left subterm R of (R ; S) is only allowed to be either the constant 1, or a Boolean term neither containing the complement operator nor the constant 1, while in the case of (R ; 1), R can only be a Boolean term involving relational variables and the operators of intersection and of union. We prove the decidability of the fragment by defining a dual tableau- based decision procedure with a suitable blocking mechanism and where the rules to decompose compositional formulae are modified so to deal with the constant 1 while preserving termination. The fragment properly includes the logics presented in previous work and, therefore, it allows one to express, among others, the multi-modal logic K with union and intersection of accessibility relations, and the description logic ALC with union and intersection of roles.

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。

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