An elementary proof of the existence of a competitive equilibrium is given for economies where the weak axiom of revealed preference or the gross substitution property hold. It is shown by an induction argument that in these cases, the problem is reduced to the question of the existence of an...

In this paper we analyse the problem of the modelling of individual transitions in presence of an incomplete sampling scheme.

We examine an important class of decision problem under uncertainty that entails the standarrd portfolio problem and the demand for coinsurance. The agent faces a controllable risk -his demand for a risky asset for example- and a background risk. We determine how a change in the distribution in...

This paper is aimed at assesssing the empirical relevance of the new theory of regulation inspired by the theory of incentives. It contributes to the econometrics of asymmetric information models by using the principal-agent framework for studying the regulatory schemes used in French urban...

Dans cet article, nous proposons un cadre unifie permettant de rendre compte des developpements les plus recents de la theorie de la discrimination par le prix. Ces developpements ont pour denominateur commun le desir de relacher les hypotheses sous-tendants le cas desormais classique de la...