This paper provides an axiomatic characterization of two rules for comparing alternative sets of objects on the basis of the diversity that they offer. The framework considered assumes a finite universe of objects and a priori given ordinal quadernary relation that compares alternative pairs of...

This paper proposes a new kind of asymmetric GARCh where the conditional variance obeys two different regimes with a smooth transition function. In one formulation variance reacts differently to negative and positive shocks while a second formulation, small and big shocks have separate effects.

This paper develops a dynamic model wherin production generates pollution that is viewed as a public bad by consumers. There are two types of consumers: those who are altruist a la Barro-Becker and leave bequests to their children and those who are pure life-cyclers. Both types of consumers...

On presente dans cet article un cadre general -celui de la "concurrence monopolistique cournotienne" - permettant de mettre en valeur la maniere dont la concurrence sur le marche des biens peut, en presence de rendements croissants et d'une variabilite des facteurs de marge, etre a l'origine de...

A geometrical setting is constructed, based on Hilbert space, in which the asymptotic properties of estimators can be studied. Estimators are defined in the context of parametrised models, which are treated as submanifolds of an underlying Hilbert manifold, on which a parameter-defining mapping...