Cet article se propose d'evaluer l'existence des enigmes de la prime de risque et du taux sans risque sur donnees francaises de 1897 a 1996. Nous verifions tout d'abord l'inaptitude du modele standard d'evaluation d'actifs base sur la consommation a reproduire la prime de risque historique pour...

We present a model that focuses on the links between location and educational choices in South African cities. Be comparing the Apartheid city and the post-Apartheid city, we show that the inequality in South Africa between blacks and whites decreases when Apartheid laws are removed.

The model developed in this paper extends the strategic location framework under Cournot competition in order to allow for different production costs across locations.

In a vertical differentiation model, we investigate whether the property of finiteness holds when the average cost function depends on the quantity. We prove that this property holds when the cost function has increasing returns. In the case of cost functions with decreasing returns, we prove...

Notre objectif est de construire une maquette simple de l'economie francaise, susceptible d'etre utilisee pour des travaux de prevision et d'evaluation des politiques macroeconomiques.

The purpose of this paper is to provide a characterization result for the canonical basis of an arbitrary closure operator. This theorem strengthens the result of Burosch, Demetrovics and Katona, who propose in [1] a characterization of the generating system of a closure operator defined by the...

In this paper, we study almost periodic (a.p.) solutions of discrete dynamical systems. We first adapt some results on a.p. differential equations to a.p. difference equations, on the link between boundedness of solutions and existence of a.p. solutions.

Kinckerbocker (1973) introduced "oligopolistic reaction" to explain why firms follow rivals into foreign markets. We develop a model that incorporates the central features of Kinckerbocker's story -oligopoly, uncertainty, and risk aversion- to establish the conditions required to generate...