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arXiv · 2610.38576

Extending Higher-Order Critical Pairs

Johannes Niederhauser·Aart Middeldorp
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Abstract

Confluence is a fundamental property of computation which implies that the nondeterminism of a system does not affect its outcomes. A key concept of confluence research in rewriting theory is the notion of critical pairs which captures the potential local sources of non-confluence. In this paper, we lift the definition of higher-order critical pairs to a more expressive class of higher-order rewrite systems. Thereby, we facilitate confluence analysis of rewrite systems which can express complex one-step computations as well as program transformations from functional programming.

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Johannes Niederhauser, Aart Middeldorp. 2026-10-28. Extending Higher-Order Critical Pairs. https://arxiv.org/abs/2610.38576

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