The second machine class: models of parallelism
Parallel computers and computations
Structural complexity 2
Journal of Computer and System Sciences
P systems with active membranes: attacking NP-complete problems
Journal of Automata, Languages and Combinatorics
Introduction to the Theory of Computation
Introduction to the Theory of Computation
Membrane Computing: An Introduction
Membrane Computing: An Introduction
Complexity classes in models of cellular computing with membranes
Natural Computing: an international journal
The computational power of cell division in P systems: Beating down parallel computers?
Natural Computing: an international journal
Solving multidimensional 0--1 knapsack problem by P systems with input and active membranes
Journal of Parallel and Distributed Computing
Tissue p systems with cell separation: upper bound by PSPACE
TPNC'12 Proceedings of the First international conference on Theory and Practice of Natural Computing
International Journal of Computing Science and Mathematics
Time-free solution to SAT problem using P systems with active membranes
Theoretical Computer Science
Space complexity equivalence of P systems with active membranes and Turing machines
Theoretical Computer Science
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P systems are parallel molecular computing models based on processing multisets of objects in cell-like membrane structures. Recently, Petr Sosík has shown that a semi-uniform family of P systems with active membranes and 2-division is able to solve the PSPACE-complete problem QBF-SAT in linear time; he has also conjectured that the membrane dissolving rules of the (d) type may be omitted, but probably not the (f) type rules for non-elementary membrane division. In this paper, we partially confirm the conjecture proving that dissolving rules are not necessary. Moreover, the construction is now uniform. It still remains open whether or not non-elementary membrane division is needed.