In this survey article, we report results on the existence of pure-strategy Nash equilibria in games with an atomless continuum of players, each with an action set that is not necessarily finite. We also discuss purification and symmetrization of mixed-strategy Nash equilibria, and settings in...

In the first place, we present a quasi fixed-point theorem for a correspondence defined on some infinite-dimensional locally convex topological vector space such that some variables have open lower sections and the other ones are upper semicontinuous. In the second place, we propose a direct...

We present the model of games with incomplete information first introduced by Harsanyi and show the link with extensive form games with imperfect information. We provide then a construction of the universal type space of Mertens and Zamir together with some properties.

Symmetry of shocks across countries is often considered as a necessary condition for a monetary union. We show that the measure of shocks symmetry does not reveal a deep parameter, and depends on economic integration. The more integrated economies are, the more aysmmetric are GDPs for a given...

This paper presents and tests a model of cigarette consumption which mixes two types of intertemporal dependencies : habit-formation and learning about the health conseqences of smoking. This latter is argued to result from the observation of health developments, both one's own and those of...

Nous analysons d'abord la litterature specifiquement consacree a la resolution des crises d'illiquidite. La decision de la banque est dans ce cadre uniquement fonction de la valeur actualisee de sa creance, donc des potentialites de redressement de la firme. Elle n'influence pas le risque de...

The core of an economy consists of those attainable allocations of the economy which no group of agents (coalition) can "improve upon". This paper presents a concept of core of a production economy with a finite number of agents with asymmetric information, a continuum of states and an infinite...

We introduce here zero-sum games, which represent the strategic interactions where two agents have totally opposed interests. The concept of rational solution for such interactions is then defined by the notions of value and optimal strategies. These quantities always exist if the information is...