This paper applies the mean field game approach pioneered by Lasry and Lions [2007] to the analysis of researchers? academic productivity. It provides a theoretical motivation for the stability of the universally observed Lotka?s law. It shows that a remuneration scheme taking into account...

We consider the standard discrete-time model of a frictionless financial market and show that the law of one price holds if and only if there exists a martingale density process with strictly positive initial value. In contrast to the classical no-arbitrage criteria, this density process may...

In this note, we state a zero-maximum principle for core allocations, a result which was foreseen by Luenberger (1995). We prove a generalization of the first-zero maximum theorem of Luenberger. Roughly said, an allocation is in the core if for every coalition, the sum of individual benefit...

Dans cet article nous développons l'approche de l'information de Theil [1975] au problème de la sélection de portefeuille. L'équation matricielle fondamentale de la théorie de la sélection de portefeuille est résolue et les propriétés des demandes d'actifs sont étudiées. L'accent est...

This paper presents an application of new measures of research excellence, namely Hirsch's index (2005) and derived indexes. It gives a ranking of French departments of Economics, departments of Management and Business schools based on the quality of the academic environment offered by these...

The purpose of this note is to study first a notion of a surplus function that originates in the work of [Boiteux, M., 1951. Le Revenu Distribuable et les Pertes Économiques. Econometrica 112-133] and to rely upon this notion to study dual Pareto efficiency in an exchange economy. This...

In the early 2000s, many developing countries in Eastern Europe, Latin America and Asia presented substantial corporate dollar debts. This paper suggests an explanation for this worrisome phenomenon, which builds on the traditional signaling approach. The model brings into the picture specific...

This paper analyzes the effect of stricter sanctions against fraudulent disclosure in an economy where commercial lenders have only an imperfect information about the type of the firm they trade with. In the hybrid Bayesian equilibrium, some managers running fragile firms claim that their firm...