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...

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...

Dans le cadre d'un modele de croissance a generations imbriquees avec agents heterogenes, on analyse dans cet article les consequences en termes de croissance et de chomage de politiques publiques de subvention a l'education.

We consider an overlapping generations model of small open economy with Harrod neutral technical progress. If the interest rate is less that the growth rate, intergenerational public transfers increase welfare of some generations and reduce welfare of others.

We consider infinite horizon variational problems on different spaces of curves in presence of constraints on the state. We establish several necessary conditions of optimality, and give relations between these different problems.

Nous montrons dans cet article que les contraintes de salaire minimum legal peuvent exercer des influences favorables sans qu'il soit necessaire de faire reference a des externalites. Plus precisement, si l'economie concurrentielle admet plusieurs equilibres stationnaires, il existe toujours un...

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...

We consider the determinacy of perfect foresight equilibrium near a steady state in an overlapping generations model with production and both altruistic and non altruistic agents having distinct utility functions. The proportions of each type of consumers is exogenously given. Such a model may...