The power of communication: P systems with symport/antiport |
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Authors: | Andrei Pâun Gheorghe Pâun |
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Affiliation: | (1) Department of Computer Science, University of Western Ontario, N6A 5B7 London, Ontario, Canada;(2) Institute of Mathematics of the Romanian Academy, PO Box 1-764, 70700 Bucureşti, Romania |
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Abstract: | In the attempt to have a framework where the computation is done by communication only, we consider the biological phenomenon
of trans-membrane transport of couples of chemicals (one say symport when two chemicals pass together through a membrane,
in the same direction, and antiport when two chemicals pass simultaneously through a membrane, in opposite directions). Surprisingly
enough, membrane systems without changing (evolving) the used objects and with the communication based on rules of this type
are computationally complete, and this result is achieved even for pairs of communicated objects (as encountered in biology).
Five membranes are used; the number of membranes is reduced to two if more than two chemicals may collaborate when passing
through membranes.
Andrei Paun: He graduated the Faculty of Mathematics of Bucharest University in 1998, received his M.Sc. degree from The University of
Western Ontario in 1999, and since then he is a PhD student in the Computer Science Department of University of Western Ontario,
London, Canada (under the guidance of prof. Sheng Yu). The topic of his thesis is Molecular Computing (especially, DNA and
Membrane Computing), but his research interests also include neural networks, implementing automata, combinatorics on words.
Gheorghe Paun: (the proud father of two sons, including the first author of this paper) He is a member of the Romanian Academy, working
as a senior researcher in the Institute of Mathematics of the Romanian Academy, Bucharest, and as a Ramon y Cajal researcher
in Rovira i Virgili University of Tarragona, Spain. He is one of the most active authors in (the theory of) DNA Computing,
(co)author of many papers in this area, (co)author and (co)editor of several books. In 1998 he has initiated the area of Membrane
Computing. Other research interests: regulated rewriting, grammar systems, contextual grammars, combinatorics on words, computational
linguistics. |
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Keywords: | Molecular Computing Membrane Computing Symport Antiport Computational Universality |
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