Efficient risk-sharing rules and equilibria between two agents with utilities in a class that contains the Rank Dependent Expected Util- ity (RDU) are fully characterized. Specific attention is given to the RDU. Call-spreads and contracts with mixed regimes are shown to be efficient....

We consider a class of law invariant utilities which contains the Rank Dependent Expected Utility (RDU) and the cumulative prospect theory (CPT). We show that the computation of demand for a contingent claim when utilities are within that class, although not as simple as in the Expected Utility...

The article analyzes the Dynkin (1975) stochastic model of economic equilibrium. We solve a question regarding this model that was open for a long time. We provide arguments yielding a complete proof of Dynkin's existence theorem for equilibrium paths.

This paper deals with risk-sharing problems between many agents, each of whom having a strictly concave law invariant utility. In the special case where every agent's utility is given by a concave integral functional of the quantile of her individual endowment, we fully characterize the optimal...

This paper characterizes the core of a differentiable convex distortion of a probability measure on a nonatomic space by identifying it with the set of densities which dominate the derivative of the distortion, for second order stochastic dominance. The densities that have the same distribution...

L'objet de ce papier est l'étude des déterminants de l'offre de riz des ménages agricoles malgaches à partir des enquêtes des Observatoires Ruraux de 1996. Plusieurs démarches sont envisagées. Tout d'abord, l'étude des déterminants du rendement du riz au niveau des parcelles permet de...

La présentation de la théorie du stockage et de la notion de convenience yield permet d’exposer les fondements théoriques des modèles de structure par terme des prix des commodités. Ces derniers peuvent être utilisés pour réaliser des opérations de couverture ou dans le cadre de...

This is a review of recent results on the disaggregation problem: given a collective demand function, is it or is it not the sum of individual demand functions, and, if it is, can one retrieve the individual demands from their given sum? There are several variants to this problem, depending on...