This paper is concerned with the ability of speculation to gener- ate a currency crisis. We consider a game-theoretic setting between a unit mass of speculators and a government that holds foreign currency reserves. We analyze conditions under which the speculators may be able to force the...

In this paper we provide some sufficient conditions for the differentiability of the value function in a class of infinite-horizon continuous—time models of convex optimization arising in economics. We dispense with an interioiity condition which is quite restrictive in constrained...

In this paper we provide some sufficient conditions for the differentiability of the value function in a class of infinite-horizon continuous-time models of convex optimization arising in economics. We dispense with an interiority condition which is quite restrictive in constrained optimization...

In this paper we consider a simple version of the neoclassical growth model, and carry out an empirical analysis of the main determinants of aggregate investment across countries. The neoclassical growth model predicts that aggregate investment may be influenced by income growth, the capital...

This paper studies first–order differentiability properties of the value function in concave dynamic programs. Motivated by economic considerations, we dispense with commonly imposed interiority assumptions. We suppose that the correspondence of feasible choices varies with the vector of state...

This paper provides a fairly systematic study of rational asset pricing bubbles in an intertemporal competitive equilibrium framework that allows for incomplete markets, productive assets, borrowing limits, and incomplete participation of agents in markets. The main results are concerned with...