Nonterminals and codings in defining variations of OL-systems

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  • Department of Computer Science
The use of nonterminals versus the use of codings in variations of OL-systems is studied. It is shown that the use of nonterminals produces a comparatively low generative capacity in deterministic systems while it produces a comparatively high generative capacity in nondeterministic systems.
Finally it is proved that the family of context-free languages is contained in the family generated by codings on propagating OL-systems with a finite set of axioms, which was one of the open problems in [10]. All the results in this paper can be found in [71] and [72].
Original languageEnglish
Title of host publicationL Systems
EditorsGrzegorz Rozenberg, Arto Salomaa
Number of pages6
Publication year1974
Publication statusPublished - 1974
SeriesLecture Notes in Computer Science

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