IMCS/Publications/CSJM/Issues/CSJM v.18, n.2 (53), 2010/

Membrane Systems Languages Are Polynomial-Time Parsable

Authors: Alhazov Artiom, Ciubotaru Constantin, Ivanov Sergiu, Rogojin Iurie


The focus of this paper is the family of languages generated by transitional non-cooperative P systems without further ingredients. This family can also be defined by so-called time yields of derivation trees of context-free grammars. In this paper we prove that such languages can be parsed in polynomial time, where the degree of polynomial may depend on the number of rules and on the size of the alphabet.

A. Alhazov1,2, C. Ciubotaru1, S. Ivanov1,3, Yu. Rogozhin1

1 Institute of Mathematics and Computer Science
Academy of Sciences of Moldova
5 Academiei str., Chișinău, MD 2028, Moldova
E-mail: , , ,

2 FCS, Department of Information Engineering
Graduate School of Engineering
Hiroshima University,
Higashi-Hiroshima 739-8527 Japan

3 Faculty of Computers,
Informatics and Microelectronics,
Technical University of Moldova,
Ştefan cel Mare 168, Chișinău MD 2004 Moldova


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