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arXiv 1608.08779cs.LO
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混合和次指数线性逻辑技术报告

Hybrid and Subexponential Linear Logics Technical Report

Joëlle Despeyroux, Carlos Olarte, Elaine Pimentel

摘要:

HyLL(Hybrid Linear Logic)和SELL(Subexponential Linear Logic)是两种逻辑框架,它们被广泛用于描述表现出诸如时间或空间模态的系统。这两个框架都有线性逻辑(LL)作为共同点,它们承认(无切割)完整的集中证明系统。这两种逻辑之间的差异取决于处理模态的方式。在HyLL中,真理判断被标记为世界,混合连接词将世界与公式联系起来。在SELL中,线性逻辑指数(!,?)用表示位置的标签来装饰,并且在这样的标签上的排序定义了那些位置中的资源之间的可证明性关系。众所周知,SELL作为一种逻辑框架,其表达能力要比LL强得多。然而,到目前为止,尚不清楚HyLL是否比LL和/或SELL更有表达力。在本文中,我们以最高的充分性将HyLL的逻辑规则编码为LL,从而表明HyLL与LL一样具有表达力。我们还提出了一个编码的HyLL到SELL $\doublecup$(SELL加上量化的位置),提供了更好的洞察世界的意义在HyLL。我们得出结论,我们的表现力研究表明,以前的尝试编码到HyLL计算树逻辑(CTL)运营商不能扩展到考虑整个时间连接词。我们表明,系统的LL与不动点确实需要忠实地编码的行为,这样的时间运营商。

英文摘要:

HyLL (Hybrid Linear Logic) and SELL (Subexponential Linear Logic) are logical frameworks that have been extensively used for specifying systems that exhibit modalities such as temporal or spatial ones. Both frameworks have linear logic (LL) as a common ground and they admit (cut-free) complete focused proof systems. The difference between the two logics relies on the way modalities are handled. In HyLL, truth judgments are labelled by worlds and hybrid connectives relate worlds with formulas. In SELL, the linear logic exponentials (!, ?) are decorated with labels representing locations, and an ordering on such labels defines the provability relation among resources in those locations. It is well known that SELL, as a logical framework, is strictly more expressive than LL. However, so far, it was not clear whether HyLL is more expressive than LL and/or SELL. In this paper, we show an encoding of the HyLL's logical rules into LL with the highest level of adequacy, hence showing that HyLL is as expressive as LL. We also propose an encoding of HyLL into SELL $\doublecup$ (SELL plus quantification over locations) that gives better insights about the meaning of worlds in HyLL. We conclude our expressiveness study by showing that previous attempts of encoding Computational Tree Logic (CTL) operators into HyLL cannot be extended to consider the whole set of temporal connectives. We show that a system of LL with fixed points is indeed needed to faithfully encode the behavior of such temporal operators.

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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