Dedekind multisets and function shells
Theoretical Computer Science
Journal of Computer and System Sciences
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough Sets: Theoretical Aspects of Reasoning about Data
Membrane Computing: An Introduction
Membrane Computing: An Introduction
RSKD '93 Proceedings of the International Workshop on Rough Sets and Knowledge Discovery: Rough Sets, Fuzzy Sets and Knowledge Discovery
Toward a Formal Macroset Theory
WMP '00 Proceedings of the Workshop on Multiset Processing: Multiset Processing, Mathematical, Computer Science, and Molecular Computing Points of View
WMP '00 Proceedings of the Workshop on Multiset Processing: Multiset Processing, Mathematical, Computer Science, and Molecular Computing Points of View
The Oxford Handbook of Membrane Computing
The Oxford Handbook of Membrane Computing
CiE'10 Proceedings of the Programs, proofs, process and 6th international conference on Computability in Europe
Natural Computing: an international journal
Approximation of sets based on partial covering
Theoretical Computer Science
Partial first-order logic with approximative functors based on properties
RSKT'12 Proceedings of the 7th international conference on Rough Sets and Knowledge Technology
P systems controlled by general topologies
UCNC'12 Proceedings of the 11th international conference on Unconventional Computation and Natural Computation
CMC'12 Proceedings of the 13th international conference on Membrane Computing
CMC'12 Proceedings of the 13th international conference on Membrane Computing
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Active cell components involved in real biological processes have to be close enough to a membrane in order to be able to pass through it. Rough set theory gives a plausible opportunity to model boundary zones around cell-like formations. However, this theory works within conventional set theory, and so to apply its ideas to membrane computing, first, we have worked out an adequate approximation framework for multisets. Next, we propose a two---component structure consisting of a P system and an approximation space for multisets. Using the approximation technique, we specify the closeness around membranes, even from inside and outside, via boundaries in the sense of multiset approximations. Then, we define communication rules within the P system in such a way that they operate in the boundary zones solely. The two components mutually cooperate.