In a multiperiod economy with incomplete markets and assets that exhibit a payoff depending on price history, we show that one need not perturb back office and settlement feature of assets to get endowment generic existence of an equilibrium. We exhibit a class of assets -transverse assets - and...

In the case of an economy with production, we unify McKenzie-Debreu's and Arrow-Hahn's concepts of irreductibility by a generalization of the Bergstrom-irreductibility. This, together with existence of a quasi-equilibrium, will be shown to imply existence of a Walras equilibrium.

The core of an economy consists of those states of the economy which no group of agents (coalition) can "improve upon". A coalition can improve upon a state of the economy if, by using the means available to that group, each member can be made better off. This paper presents the notion of the...

The general purpose of this paper is to prove quasiequilibrium existence theorems for production economies with general consumption sets in an infinite dimensional commodity space, without assuming any monotonicity of preferences or free-disposal in production.

Apres un rappel synthetique des differents concepts d'exogeneite dans les cadres stationnaire et non stationnaire (predetermination, exogeneite stricte, exogeneite faible, exogeneite forte, super exogeneite, exogeneite de cointegration), nous examinons les conditions d'exogeneite faible...

The purpose of this paper is to extend Himmelberg's fixed point theorem replacing the usual convexity in topological vector spaces by an abstract topological notion of convexity which generalizes classical convexity as well as several metric convexity structures found in the literature. We prove...

Cet article presente la methode d'estimation des Moindres Carres Modifies ou "Fully Modified" (FM) proposee par Phillips et Hansen (1990) et Phillips (1995). A partir d'un exemple simple, nous examinons l'incidence des biais d'endogeneite de long terms sur les estimations par les Moindres Carres...

In this paper, we first give a direct proof of the existence of Edgeworth equilibria for exchange economies with consumption sets which are (possibly) unbounded below. The key assumption is that the individually rational utility set is compact. It is worth noticing that the statement of this...

Ce texte constitue un complement a la presentation generale, non formelle, du modele CLFPSR faite dans [6]. Il contient une presentation systematique de la structure du modele, en termes d'economie mathematique, quoique elementaires: types de donnees et de variables, systeme de contraintes,...

We provide a proof of the existence of a (quasi-)equilibrium in an exchange economy with short selling when the preference relations of the investors are represented by a partial preorder, a setting which encompasses the case of preference relations derived from a utility function. A second...