Objectif Research concentrated on equilibria under uncertainty under the assumption that the asset market is incomplete. The following are some of the topics addressed: The existence of competitive equilibria with incomplete participation; The approach involves circumventing the portfolio choices of individuals and the associated unbounded domain of portfolios and working instead with attainability restrictions on state contingent expenditures which is no more tenable, since the participation constraints are expressed in term of the access of individuals to the asset markets. Nevertheless, it is indeed possible to express the participation constraints in a manner which allows for an argument for the generic existence of competitive equilibria. The indeterminacy of equilibria in the absence of nominal assets: When the asset market is complete, the passage from commodity prices to generalized commodity prices has no impact on the set of competitive equilibrium allocations, since only the discounted price at an initial date event matters and is unambiguously defined. When the asset market is incomplete, generalized prices cannot be reduced to a single price, and indeterminacy arises. Production decisions under uncertainty: Profit maximization is not well defined when the asset market is incomplete. Production plans not in the span of the payoff marketed assets cannot be priced based on information derived from asset prices. The existence and determinacy of equilibria was characterized under the assumption that firms evaluate alternative production plans by projecting thus on the span of the payoff of marketed assets. Equilibria are generically determinate. More interestingly, the investment criterion is an approximative application of the Capital Asset Pricing Model. Programme(s) FP2-SPES - European stimulation plan (EEC) for economic science (SPES), 1989-1992 Thème(s) Data not available Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur UNIVERSITE CATHOLIQUE DE LOUVAIN Contribution de l’UE Aucune donnée Adresse 34,Voie du Roman Pays 34 1348 LOUVAIN-LA-NEUVE Belgique Voir sur la carte Coût total Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire Rheinische Friedrich-Wilhelms-Universität Bonn Allemagne Contribution de l’UE Aucune donnée Adresse Adenauerallee 24-26 53113 Bonn Voir sur la carte Coût total Aucune donnée UNIVERSITY OF COPENHAGEN Danemark Contribution de l’UE Aucune donnée Adresse 6,Studiestraede 6 1455 KOEBENHAVN K/COPENHAEGEN Voir sur la carte Coût total Aucune donnée University of Cambridge Royaume-Uni Contribution de l’UE Aucune donnée Adresse Sidgwick Avenue CB3 9DE Cambridge Voir sur la carte Coût total Aucune donnée