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Nous exposons dans cet article les avancees de la theorie de la decision en environnement incertain au cours des vingt dernieres années. plus precisément, nous partons des modeles d'esperance (objective et subjective) d'utilite pour ensuite en presenter les generalisations recentes.
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Cet article se propose d'etudier les proprietes d'un modele d'equilibre general en presence de risque purement microeconomique lorsque les agents se comportent selon le modele d'utilite esperee au sens de Choquet (Choquet Expected Utility), ie., ils maximisent une esperance non-additive d'utilite.
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Inspite of wide and lond-standing support among economists for indexation of loan contracts there has been relatively little use of indexation, except in situations of extremely high inflation. The object of this paper is to provide a (theoretical) explanation for this puzzling phenomenon based...
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