Petri net algorithms in the theory of matrix grammars
Acta Informatica
Grammar Systems: A Grammatical Approach to Distribution and Cooperation
Grammar Systems: A Grammatical Approach to Distribution and Cooperation
Mathematical Theory of L Systems
Mathematical Theory of L Systems
On The Generative Capacity Of Certain Classes Of Cooperating Grammar Systems
Fundamenta Informaticae
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In [2] it is shown that the family of languages generated by cooperating distributed (CD) grammar systems with context-free components in the derivation modes = k, ≥ k, for k ≥ 2, and the family of E0L languages are incomparable. Because one of the languages used in the proof of the incomparability does not work, we fill here the gap, using another language. We also give an effective procedure for constructing an ET0L system from a given context-free cooperating/distributed (CD) grammar system working in the maximum mode of cooperation.