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arXiv 2402.13552cs.LO
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逻辑约束重写系统的合流性再探

Confluence of Logically Constrained Rewrite Systems Revisited

Jonas Schöpf, Fabian Mitterwallner, Aart Middeldorp

AI总结:

本文证明终止局部约束重写系统的合流性不可判定,并提出一种将逻辑约束重写系统变换为项重写系统的简单方法,从而把发展闭合临界对和并行临界对的合流性结果提升到约束环境。

摘要:

我们证明,即使底层理论是可判定的,终止的局部约束重写系统的(局部)合流性也是不可判定的。目前已存在若干逻辑约束重写系统的合流性判据,这些判据是通过在约束环境下重放普通项重写系统的既有证明而得到的,涉及相当大的努力。我们提出一种从逻辑约束重写系统到项重写系统的简单变换,使得后者的临界对对应于前者的约束临界对。通过将基于(几乎)发展闭合临界对以及并行临界对的高级合流性结果提升到约束环境,说明了该变换的实用性。

英文摘要:

We show that (local) confluence of terminating locally constrained rewrite systems is undecidable, even when the underlying theory is decidable. Several confluence criteria for logically constrained rewrite systems are known. These were obtained by replaying existing proofs for plain term rewrite systems in a constrained setting, involving a non-trivial effort. We present a simple transformation from logically constrained rewrite systems to term rewrite systems such that critical pairs of the latter correspond to constrained critical pairs of the former. The usefulness of the transformation is illustrated by lifting the advanced confluence results based on (almost) development closed critical pairs as well as on parallel critical pairs to the constrained setting.

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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