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arXiv 2602.10280math.LOcs.LO
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线性逻辑中带有固定点的更广泛系统:证明论与复杂性

Wider systems for linear logic with fixed points: proof theory and complexity

University of Birmingham(伯明翰大学);Steklov Mathematical Institute of RAS(俄罗斯科学院斯捷克洛夫数学研究所)

Anupam Das, Tikhon Pshenitsyn

AI总结:

本文提出了一种带有固定点的线性逻辑系统,通过证明论方法分析其复杂性,并证明了该系统在超算术层级的特定级别上的完备性。

摘要:

我们研究了带有固定点的线性逻辑的无限良基系统,其中传递无限分支规则由某些闭包序数α来索引。我们的主要结果是,对于某些可计算序数α,系统中的可证性在超算术层级的ω^{α^ω}级别上是完整的。为此,我们首先发展了证明论的基础,即割消和聚焦结果,以控制上界和下界分析。我们的论证运用了精心校准的公式等级概念,计算了无割证明搜索空间高度的紧界限。

英文摘要:

We investigate infinitary wellfounded systems for linear logic with fixed points, with transfinite branching rules indexed by some closure ordinal $α$ for fixed points. Our main result is that provability in the system for some computable ordinal $α$ is complete for the $ω^{α^ω}$ level of the hyperarithmetical hierarchy. To this end we first develop proof theoretic foundations, namely cut elimination and focussing results, to control both the upper and lower bound analysis. Our arguments employ a carefully calibrated notion of formula rank, calculating a tight bound on the height of the (cut-free) proof search space.

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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