character to Shakespeare's characters. In Mazur's theory he defined "character" (being the properties of a system independent of the environment) as "a set of rigid controlling properties of the system". Publications Cybernetyczna teoria układów samodzielnych [A Cybernetic Theory of Autonomous Systems], PWN, Warszawa 1966. Cybernetyka a zarządzanie [Cybernetics and management], MSW, Warszawa 1969. Jakościowa teoria informacji [A Qualitative Theory of Information], WNT, Warszawa 1970. Cybernetyka i charakter [Cybernetics and Character], PIW, Warszawa 1976. References 1909 births 1983 deaths Cyberneticists Polish computer scientists Polish physicists Polish social scientists