This paper studies economies where agents exchange indivisible goods and money. Agents have potential use for all indivisible goods and the indivisible goods are differentiated. We assume that agents have quasi-linear utilities in money, have sufficient money endowments to afford any group of...

We present a model of cooperative production in which rational agents might carry out sabotage activities that decrease output. We provide necessary and sufficient conditions for the existence of a Nash equilibrium without sabotage. It is shown that the absence of sabotage in equilibrium depends...

This paper focus on the dynamics of organizations. Agents are grouped into three classes, high, medium and low productivity. We analyze the evolution of organizations which take decisions on whom to hire and how to share the output by plurality voting. We study the evolution of political power...

This paper proposes an argument that explains incumbency advantage without recurring to the collective irresponsibility of legislatures. For that purpose, we exploit the informational value of incumbency: incumbency confers voters information about governing politicians not available from...

We model a dynamic duopoly in which firms can potentially drive their rivals from the market. A consequence is that, for some ranges of parameters, the static Cournot equilibrium outcome cannot be sustained in an infinitely repeated setting. In those cases, there is a Markov perfect equilibrium...

In this paper we study a two stage contest where the strength of players in the second stage depends on the result of the contest in the first stage. We show that this contest displays properties that are not present in one shot contests. Non-symmetric players make different efforts in the first...

We characterize the sharing rule that achieves efficiency in a contribution mechanism when agents are heterogeneous. This rule is not the one that was found by Sen when agents are identical. We also show that for a large class of sharing rules if Nash equilibrium yields efficient allocations,...

We present a model of rational and fully informed players. We show that in absence of binding agreements, in many cases, war can be avoided by transferring resources from one player into another. In most cases the rich country transfers money to the poor country. But when the military...

We analyze a two period contest in which agents may become bankrupt at the end of the first period. A bankrupt agent is excluded from the contest in the second period of the game. We investigate the existence of a subgame perfect equilibrium in pure strategies. We distinguish between a borrowing...

We compare two contest. Decentralized in which there are several independent contests with non overlapping contestants and Centralized in which all contestants fight for a unique prize which is the sum of all prizes in the small contests. We study the relationship between payoffs and efforts...