After faithfully maintaining a fixed exchange rate and fully convertible currency for almost a decade Argentina still pays higher interest rates on peso denominated debt than on US dollar denominated debt. The interest rate spread is the price of keeping the option to devalue alive. Argentina...

We analyze a dynamic model of strategic interaction between a professional sport league that organizes a tournament, the teams competing to win it, and the broadcasters paying for the rights to televise it. Teams and broadcasters maximize expected profits, while the league's objective may be...

We ask when firms with increasing returns can cover their costs independently by charging two- part tariffs (TPTs), a condition we call independent viability. To answer, we develop notions of substitutability and complementarity that account for the total value of goods and use them to find the...

This paper studies the extent to which qualitative features of Walrasian equilibria are refutable given a finite data set. In particular, we consider the hypothesis that the observed data are Walrasian equilibria in which each price vector is locally stable under tâtonnement. Our main result...

We analyze the central economic issues raised by U.S. v Microsoft. Network effects and economies of scale in applications programs created a barrier to entry for new operating system competitors, which the combination of Netscape Navigator and the Java programming language potentially could have...

I characterize games for which there is an order on strategies such that the game has strategic complementarities. I prove that, with some qualifications, games with a unique equilibrium have complementarities if and only if Cournot best-response dynamics has no cycles; and that all games with...