کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6875846 1441988 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The counting power of P systems with antimatter
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
The counting power of P systems with antimatter
چکیده انگلیسی
We give a characterisation of the class of problems solved in polynomial time by uniform and semi-uniform families of P systems with active membranes, using matter/antimatter annihilation rules and elementary membrane division. Like several other variants of P systems with elementary division, this class is exactly P#P, that is, the problems solvable efficiently with access to oracles for counting problems. We also consider the monodirectional case, where objects in the P system can only move from inner regions towards outer regions. In that case, the above model of P systems characterises the class P∥#P, where each query is independent of the result of the others; this contrasts with traditional P systems with active membranes, which characterise the (conjecturally proper) subclass P∥NP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical Computer Science - Volume 701, 21 November 2017, Pages 161-173
نویسندگان
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