We study cycles and chaos in economic models. Autonomous dynamical systems are considered through infinite time horizon optimization models. We first show how endogenous fluctuations arise in a multisector growth model. Secondly, we consider an extension of this model by allowing direct...

This paper discusses the influence of technological externalities on the dynamic properties of accumulation paths in a two-sector growth model in discrete time.

We consider a discrete-time two-sector Cobb-Douglas economy with positive sector specific external effects. We show that indetermincay of steady states and cycles can easily arise with constant or decreasing social returns to scale, and very small market imperfections. This is in sharp contrast...

This article is interested in the scope for indeterminacies that originate from capital stock externalities in the technological set of the reference model of the multisectoral optimal growth literature. Sufficient conditions for local indeterminacies and oscillations are established and rest on...

Cet article considere un modele a generations imbriquees avec production, dans lequal les agents sont supposes etre altruistes et la fonction de production contient un effet externe "a la Romer". Nous proposons des conditions suffisantes pour l'existence de legs stationnaires positifs qui...

Nous etudions un modele de croissance a un secteur dans lequel coexistent a chaque periode un continuum d'agents a duree de vie finie, et d'agents a duree de vie infinie. Nous montrons que deux types d'equilibres stationnaires peuvent exister selon le niveau d'epargne stationnaire des agents a...