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Confluence of algebraic rewriting systems

Published online by Cambridge University Press:  10 December 2021

Cyrille Chenavier
Affiliation:
Johannes Kepler University Altenberger Straße 69 A-4040 Linz, Austria
Benjamin Dupont*
Affiliation:
Univ Lyon, Université Claude Bernard Lyon 1 CNRS UMR 5208, Institut Camille Jordan 43 blvd. du 11 novembre 1918 F-69622 Villeurbanne cedex, France
Philippe Malbos
Affiliation:
Univ Lyon, Université Claude Bernard Lyon 1 CNRS UMR 5208, Institut Camille Jordan 43 blvd. du 11 novembre 1918 F-69622 Villeurbanne cedex, France
*
*Corresponding author. Email: bdupont@math.univ-lyon1.fr
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Abstract

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Convergent rewriting systems on algebraic structures give methods to solve decision problems, to prove coherence results, and to compute homological invariants. These methods are based on higher-dimensional extensions of the critical branching lemma that proves local confluence from confluence of the critical branchings. The analysis of local confluence of rewriting systems on algebraic structures, such as groups or linear algebras, is complicated because of the underlying algebraic axioms. This article introduces the structure of algebraic polygraph modulo that formalizes the interaction between the rules of an algebraic rewriting system and the inherent algebraic axioms, and we show a critical branching lemma for algebraic polygraphs. We deduce a critical branching lemma for rewriting systems on algebraic models whose axioms are specified by convergent modulo rewriting systems. We illustrate our constructions for string, linear, and group rewriting systems.

Information

Type
Special Issue: Confluence
Copyright
© The Author(s), 2021. Published by Cambridge University Press