The purpose of the Journal of Computer and System Sciences is to publish original research papers in computer science and system science, with emphasis on the relevant mathematical theory and its applications. Papers may deal with such subjects as automata theory, databases, complexity, computational learning theory, parallel computation, quantum computation, computational biology, computer network algorithms, cryptography and computer/communication security, theory of formal languages and formal systems, theory of algorithms, computer programming theory, mathematical theory of systems (discrete or continuous, deterministic or stochastic), optimization of systems, mathematical programming, computational biology and genomics, and applications of mathematics to the study of complex systems.