If the allocations of a differential information economy are defined as incentive compatible state-contingent lotteries over consumption goods, competitive equilibrium allocations exist and belong to the (ex ante incentive) core. Furthermore, any competitive equilibrium allocation can be viewed...

In a differential information economy with quasi–linear utilities, monetary transfers facilitate the fulfillment of incentive compatibility constraints : the associated ex ante core is generically nonempty. However, we exhibit a well–behaved exchange economy in which this core is empty, even...

We consider exchange economies with a continuum of agents and differential information about finitely many states of nature. It was proved in Einy, Moreno, and Shitovitz (2001) that if we allow for free disposal in the market clearing (feasibility) constraints then an irre- ducible economy has...

The article discusses the origins of the U-shaped average cost curve, which is one of the most widely used tools in microeconomic analysis. Its widespread use leads many to consider it as a basic tool, obscuring the fact that the graph of the U-shaped average cost curve is part of a complex...

In several papers, Negishi revisted the foundations of competitition. Sensitive to the Edgeworthian views of exchange but strongly influenced by the law of indifference of Jevons, he tried to reconcile both approaches. The main result of this synthesis is the equivalence between the walrasian...

Ce manuel expose les connaissances de base nécessaires en premier cycle de microéconomie avec le souci d'en faciliter l'approche mathématique. Des exercices d'entraînement nécessitant le maniement d'équations ou de graphiques sont proposés après chaque chapitre et corrigés en fin d'ouvrage.

Hayek draws the general lines of an analysis of economic knowledge in taking up two different directions. On the one hand he draws his attention on the knowledge used by the agents in the course of the economic process; on the other one he seeks for the theoretical knowledge required to explain...