We develop a dynamic model for analyzing the programs of contractual savings for housing (CSH). We introduce concepts of stability as well as strong and weak stability of trajectories generated by CSH programs, and obtain the necessary and sufficient conditions that guarantee fulfillment of...

We propose an evolutionary equation and develop an asymptotic theory that generalize results obtained in Polterovich, Khenkin, 1988. It is shown that, as a result of interaction between innovation and imitation, the shape of the efficiency distribution curve of technologies eventually...

We propose a difference-differential equation that reflects interactions between innovation and imitation processes to describe the evolution of the distribution curve of firms by efficiency levels. An explicit solution of this equation is obtained for arbitrary finite initial conditions. It is...