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The computational power of timed P systems with active membranes using promoters

Published online by Cambridge University Press:  09 August 2018

YUEGUO LUO
Affiliation:
College of Computer Engineering, Yangtze Normal University, Chongqing 408100, China Email: ygluo@cqu.edu.cn, 21249892@qq.com, 77101258@qq.com
HAIJUN TAN
Affiliation:
College of Computer Engineering, Yangtze Normal University, Chongqing 408100, China Email: ygluo@cqu.edu.cn, 21249892@qq.com, 77101258@qq.com
YING ZHANG
Affiliation:
College of Computer Engineering, Yangtze Normal University, Chongqing 408100, China Email: ygluo@cqu.edu.cn, 21249892@qq.com, 77101258@qq.com
YUN JIANG
Affiliation:
School of Artificial Intelligence, Chongqing Technology and Business University, Chongqing 400067, China Email: 34976532@qq.com
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Abstract

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P systems with active membranes are a class of bioinspired computing models, where the rules are used in the non-deterministic maximally parallel manner. In this paper, first, a new variant of timed P systems with active membranes is proposed, where the application of rules can be regulated by promoters with only two polarizations. Next, we prove that any Turing computable set of numbers can be generated by such a P system in the time-free way. Moreover, we construct a uniform solution to the $\mathcal{SAT}$ problem in the framework of such recognizer timed P systems in polynomial time, and the feasibility and effectiveness of the proposed system is demonstrated by an instance. Compared with the existing methods, the P systems constructed in our work require fewer necessary resources and RS-steps, which show that the solution is effective to NP-complete problem.

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Copyright © Cambridge University Press 2018