Grammar systems versus membrane computing: The case of CD grammar systems

Erzsébet Csuhaj-Varjü, Gheorghe Pun, György Vaszil

Research output: Contribution to journalArticle

6 Citations (Scopus)


In this paper we discuss some relationships between grammar systems and P systems (membrane systems), two areas of computer science dealing with distributed computing models, but with different motivations and different types of basic ingredients. We extend one of the most important communication protocols of cooperating distributed (CD) grammar systems, the so-called t-derivation mode, to P systems with string-objects: if no rule can be applied to a string in a region of a P system, then the string is moved to a neighbouring region, depending on the communication mode either in exactly one direction (in or out) or in both directions. We describe the computational power of the obtained classes of P systems in comparison with families of languages generated by grammars in the Chomsky hierarchy or with CD grammar systems and formulate several problems for future research.

Original languageEnglish
Pages (from-to)271-292
Number of pages22
JournalFundamenta Informaticae
Issue number3
Publication statusPublished - Jan 1 2007



  • Cooperating distributed grammar systems
  • P systems

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Algebra and Number Theory
  • Information Systems
  • Computational Theory and Mathematics

Cite this