We derive a new transversality condition (which we prove to be necessary) for a class of infinite horizon optimal control problems.

We present a simple two(-country) by two(-good) differental game model of international trade in which the governments of the two countries play a tariff-setting game. We explicitly derive a unilateral optimum tarifff rate and then a Markov-perfect equilibrium pair of tariff strategies...

We build an overlapping generations model of endogenous growth driven by human capital formation. Young people differ in their innate abilities, but these differences are not known even by the individuals themselves when they are going through the process of education, so that there are no...