Standard models for fi…nancial markets are based on the simplifying assumption that trading orders can be given and executed in continuous time with no friction. This assumption is clearly a strong idealization of the reality. In particular, securities should not be described by a single price...

This paper studies the existence of solutions in continuous time optimization problems. It provides a theorem whose conditions can be easily checked in most models of the optimal growth theory, including those with increasing returns and multi-sector economies.

In a recent article, Demichelis and Polemarchakis (2007) highlighted the role played by the frequency of trade on the degree of indeterminacy of equilibrium in economies of overlapping generations. Assuming that time has a finite starting point and extends into the infinite future, they prove...

We prove that every two-player nonzero-sum Dynkin game in continuous time admits an "epsilon" equilibrium in randomized stopping times. We provide a condition that ensures the existence of an "epsilon" equilibrium in nonrandomized stopping times.

In a recent article, Demichelis and Polemarchakis (2007) highlighted the role played by the frequency of trade on the degree of indeterminacy of equilibrium in economies of overlapping generations. Assuming that time has a finite starting point and extends into the infinite future, they prove...

The literature on the impact of an abundance of natural resources on economic performance remains inconclusive. In this paper we consider the possibility that countries may follow different growth regimes, and test the hypothesis that whether natural resources are a curse or a blessing depends...

We build an overlapping generation model to study financial fragility in a two-sector small open economy. Firms are subject to a borrowing constraint and there is a currency mismatch in the balance sheets of the non-tradable sector. As a consequence, at a given point in time, multiple equilibria...

We endogenize the discount rate via wealth and provide evidence that wealth affects the discount rate negatively. We give a necessary and sufficient condition for endogenous discounting to lead to the Twin-Peaks of economic growth and show that improvements in technology help avoid them.

In many European countries, a majority of employees are hired under very protective labor contracts thatrestrict the ability of the employer to dismiss them. In particular, employees can take to courts the firm'slayoff motive. Given the high costs specific to so-called economic motives and...

In this paper, we propose a twin crises synthetic model. We show that there may be multiple equilibria on the exchange market as well as on the international financial one and emphasize the possible connections between currency and financial crises. On the exchange market, the currency...