Single-product dynamic model of replacing production capacities.
Stable solutions to homogeneous difference-differential equations with constant coefficients: Analytical instruments and an application to monetary theory
In economic systems, reactions to external shocks often come with a delay. On the other hand, agents try to anticipate future developments. Both can lead to difference-differential equations with an advancing argument. These are more difficult to handle than either difference or differential equations, but they have the merit of added realism and increased credibility. This paper generalizes a model from monetary economics by von Kalckreuth and Schröder. Working out its stability properties, we...
Starshapedness and its applications to input-output models
Structure of optimal trajectories in a nonlinear dynamic model with endogenous delay.
Sufficient conditions for infinite-horizon calculus of variations problems
Sufficient conditions for infinite-horizon calculus of variations problems
After a brief survey of the literature about sufficient conditions, we give different sufficient conditions of optimality for infinite-horizon calculus of variations problems in the general (non concave) case. Some sufficient conditions are obtained by extending to the infinite-horizon setting the techniques of extremal fields. Others are obtained in a special qcase of reduction to finite horizon. The last result uses auxiliary functions. We treat five notions of optimality. Our problems are essentially motivated...
Support prices for weakly maximal programs of a growth model with uncertainty
We consider an infinite dimensional, nonstationary growth model with uncertainty. Using techniques from functional analysis and the subdifferentiation theory of concave functions, we establish the existence of a supporting price system for a weakly maximal program.
Sur l'invariance de l'optimum dans certains modèles linéaires de planification en regard des changements de prix
Sustainable economic growth and exhaustible resources: A model and estimation for the US.