@article {361,
	title = {Uniform solutions to SAT and Subset Sum by spiking neural P systems},
	journal = {Natural Computing},
	volume = {8},
	year = {2009},
	month = {12/2009},
	pages = {681-702},
	publisher = {Springer Verlag},
	address = {Amsterdam, Netherlands},
	abstract = {We continue the investigations concerning the possibility of using spiking neural P systems as a framework for solving computationally hard problems, addressing two problems which were already recently considered in this respect: SubsetSum and SAT. For both of them we provide uniform constructions of standard spiking neural P systems (i.e., not using extended rules or parallel use of rules) which solve these problems in a constant number of steps, working in a non-deterministic way. This improves known results of this type where the construction was non-uniform, and/or was using various ingredients added to the initial definition of spiking neural P systems (the SN P systems as defined initially are called here {\textquotedblleft}standard{\textquotedblright}). However, in the SubsetSum case, a price to pay for this improvement is that the solution is obtained either in a time which depends on the value of the numbers involved in the problem, or by using a system whose size depends on the same values, or again by using complicated regular expressions. A uniform solution to SAT is also provided, that works in constant time. },
	keywords = {Membrane computing; Spiking neural P system; SAT problem; Subset sum problem; Complexity},
	issn = {1567-7818},
	doi = {10.1007/s11047-008-9091-y},
	url = {http://dx.doi.org/10.1007/s11047-008-9091-y},
	author = {Alberto Leporati and Giancarlo Mauri and Claudio Zandron and Gheorghe Paun and Mario J. P{\'e}rez-Jim{\'e}nez}
}
