Les pays d'Afrique subsaharienne ont à scolariser un nombre croissant d'enfants, dans un contexte d'approfondissement de la pauvreté. Si les taux de scolarisation sont plus faibles en milieu rural, les villes connaissent également de fortes difficultés. Cet article analyse, pour Conakry,...

This paper proves the existence of competitive equilibrium in a single-sector dynamic economy with heterogeneous agents, elastic labor supply and complete assets markets. The method of proof relies on some recent results concerning the existence of Lagrande multipliers in infinite dimensional...

Située au cœur d'une région aux conditions climatiques favorables, Bangui, capital de la République Centrafricaine, ne semble pas, à première vue, connaître de difficultés d'approvisionnement majeures, contrairement, aux grandes capitales africaines ou aux villes sahéliennes. Cependant,...

Cette étude faite au niveau général du budget ne présage cependant rien en ce qui concerne le détail de chacun des postes de dépense. Or, l'hypothèse d'un investissement en grande partie lié aux dépenses passées et aux caractéristiques actuelles est tout à fait plausible pour le...

This paper proves the existence of competitive equilibrium in a single-sector dynamic economy with heterogeneous agents, elastic labor supply and complete assets markets. The method of proof relies on some recent results concerning the existence of Lagrange multipliers in in nite dimensional...

This paper analyses the optimal timing of switching between alternative and consecutive regimes in optimal growth models. We derive the appropriate necessary conditions for such problems by means of the standard techniques from calculus of variations and some basic properties of Sobolev spaces.

To account for the development patterns that differ considerably among economies in the long run, a variety of one-sector models that incorporate some degree of market imperfections based on technological external effects and increasing returns have been presented. This paper studies the dynamic...

In this paper, we study the existence of an intertemporal equilibrium in a Ramsey model with heterogenous discounting, elastic labor supply and borrowing constraints. Applying a fixed-point argument by Gale and Mas-Colell (1975), we prove the existence of an equilibrium in a truncated bounded...

We consider a general equilibrium model with heterogeneous agents, borrowing constraints, and exogenous labor supply. First, the existence of intertemporal equilibrium is proved even if the aggregate capitals are not uniformly bounded above and the production functions are not time invariant....

We study the impact of social capital in both simple theoretical and empirical model with the main assumption is the price of physical capital is a decreasing function of social capital. In our theoretical model, there exists a critical value such that firm will not invest in social capital if...