الفهرس 
Computational management of P systems
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Abstract
A P system is a computational model that was introduced by Gheorge Paun as a class of parallel, distributed and nondeterministic computing devices inspired by some biological features of a real cell. The essential ingredient of P systems is a membrane structure which consists of several numbers of membranes in a hierarchical manner all these membranes embedded in a main membrane which called skin membrane. The membrane structure consists of several membrane-delimited compartments; each membrane can contain objects which can be strings or symbols over a given alphabet. These objects can evolve according to specified evolution rules, which also determine the communication of objects between membranes. The evolution rules are applied in maximally parallel nondeterministic manner