Termination of disjoint unions of conditional term rewriting systems:

Abstract: "In this paper we extend several results concerning the termination of the disjoint union of term rewriting systems to conditional term rewriting systems. The first termination property we study is strong normalization (there are no infinite reduction sequences) and we show that suffi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Middeldorp, Aart 1963- (VerfasserIn)
Format: Buch
Sprache:English
Veröffentlicht: Amsterdam 1989
Schriftenreihe:Centrum voor Wiskunde en Informatica <Amsterdam> / Department of Computer Science: Report CS 89,59
Schlagworte:
Zusammenfassung:Abstract: "In this paper we extend several results concerning the termination of the disjoint union of term rewriting systems to conditional term rewriting systems. The first termination property we study is strong normalization (there are no infinite reduction sequences) and we show that sufficient conditions for the strong normalization of the disjoint union of two strongly normalizing term rewriting systems given by Rusinowitch and Middeldorp extend naturally to conditional term rewriting systems. Weak normalization (every term reduces to a normal form) is the second property we are interested in. We show that for conditional term rewriting systems weak normalization is not preserved under disjoint unions
This is rather surprising because the disjoint union of weakly normalizing unconditional term rewriting systems is weakly normalizing. Besides giving sufficient conditions for the weak normalization of disjoint unions of weakly normalizing conditional term rewriting systems, we will also give a much simpler proof of the recent approach to weak normalization due to Kurihara and Kaji
Beschreibung:24 S.

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