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...

There are two innovations in the paper as compared to the previous literature on democracy and growth. First, we consider not only the level of democracy, but also changes in this level in the 1970s-1990s as measured by increments of Freedom House political rights indices. Second, the...

There are two innovations as compared to the previous literature on democratization and growth. First, not only the level of democracy is taken into account, but also changes in this level in the 1970s-1990s as measured by the political rights indices of the Freedom House. Second, the...

There are two innovations in the paper as compared to the previous literature on democracy and growth. First, we consider not only the level of democracy, but also changes in this level in the 1970s-1990s as measured by increments of Freedom House political rights indices. Second, the...

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...

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...