Titlebook: Aspects of Molecular Computing; Essays Dedicated to Nata?a Jonoska,Gheorghe P?un,Grzegorz Rozenberg Book 2004 Springer-Verlag Berlin Heide

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Eilenberg P Systems with Symbol-Objects,ne, is introduced. A parallel variant of EOP systems, called EOPP systems, is also defined and the power of both EOP and EOPP systems is investigated in relationship with three parameters: number of membranes, states and set of distributed rules. It is proven that the family of Parikh sets of vector