Cet article a pour but de demontrer la viabilite des politique de taxation du capital dans une economie mondiale a deux pays avec imparfaite substituabilite des capitaux. Les agents sont altruistes et donnent une partie de leur patrimoine a leurs enfants. La presence d'une contrainte sur les...

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.

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...

This paper follows recent research about the importance, the variety and the development of innovation in the service industries. We study the innovations which have appeared in the fast growing activity of mobile telecommunication services in France.

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

Traditional trade models ignoring the dimension of product quality generally lead to excessively low trade price elasticities. In this paper, we show that higher estimated trade price elasticities, more in conformity with theory, can be obtained by controlling product quality in trade equations....

A hierarchic price is a finite ordered family of price vectors {p1,...,pk}. It extends the notion of exchange values proposed by Gay (1978). These price notions were introduced in order to establish the existence of a competitive equilibrium without the strong survival assumption. It is well...

We give a simple example to the non-existence of duopoly equilibrium in pure strategies in an economy with two goods and two types of consumers.