Modularity of Convergence and Strong Convergence in Infinitary Rewriting

Kahrs, Stefan (2010) Modularity of Convergence and Strong Convergence in Infinitary Rewriting. Logical Methods in Computer Science, 6 (3). pp. 182-196. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Properties of Term Rewriting Systems are called modular iff they are preserved under (and reflected by) disjoint union, i.e. when combining two Term Rewriting Systems with disjoint signatures. Convergence is the property of Infinitary Term Rewriting Systems that all reduction sequences converge to a limit. Strong Convergence requires in addition that redex positions in a reduction sequence move arbitrarily deep. In this paper it is shown that both Convergence and Strong Convergence are modular properties of non-collapsing Infinitary Term Rewriting Systems, provided (for convergence) that the term metrics are granular. This generalises known modularity results beyond metric d\infty.

Item Type: Article
Uncontrolled keywords: determinacy analysis, Craig interpolants
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Faculties > Science Technology and Medical Studies > School of Computing > Programming Languages and Systems Group
Depositing User: Stefan Kahrs
Date Deposited: 21 Sep 2012 09:49
Last Modified: 21 Sep 2012 09:49
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