Abstract. We compare various computational complexity classes defined within the framework of membrane systems, a distributed parallel computing device which is inspired from the functioning of the cell, with usual computational complexity classes for Turing machines. In particular, we focus our attention on the comparison among complexity classes for membrane systems with active membranes (where new membranes can be created by division of existing membranes) and the classes PSPACE, EXP, and EXPSPACE. 1991 Mathematics Subject Classification. 68Q05, 68Q15.
Antonio E. Porreca, Giancarlo Mauri, Claudio Zandr