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Dynamic labeled 2-structures

Published online by Cambridge University Press:  04 March 2009

A. Ehrenfeucht
Affiliation:
Department of Computer Science, University of Colorado at Boulder Boulder, CO 80309, U.S.A.
G. Rozenberg
Affiliation:
Department of Computer Science, University of Colorado at Boulder Boulder, CO 80309, U.S.A. Department of Computer Science, Leiden University, P.O. Box 9512, 2300 RA Leiden, The Netherlands

Abstract

The notion of a dynamic labeled 2-structure(dℓ2s) is introduced and investigated. It generalizes the notion of a labeled 2-structure (ℓ2s) (Ehrenfeucht and Rozenberg 1990), by making it possible to change the (label) relationships between the nodes. This is achieved by storing in the nodes of a ℓ2s output and input functions that can change the outgoing and incoming labels, respectively. The notion of a clan, which is central in the theory of ℓ2s's is transferred to the framework of dℓ2s's, and the basic properties of clans of dℓ2s's are investigated.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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