In this paper robustness properties are studied for kernel density estimators. A plug-in and least squares cross-validation bandwidth selector are considered. In an asymptotic analysis and in a simulation study it is shown that the robustness of kernel density estimates depends strongly on the...

This note explores the consequence of hidden information acquisition for static decision theory. \Ve show that any choice correspondence in the observable problem can be consistent with some well-behaved choice correspondence in an unobservable metaproblem with costly information acquisition....

This paper studies the design of a pay-as-you-go social security system in a society where fertility is in part stochastic and in part determined through capital investment. If parents' investments in children are publicly observable, pension benefits must be linked positively to the the level...

This paper presents an overlapping generations model of environmental externalities with a depollution technology. Each agent concerned by the environmental degradation can voluntarily contribute in order to reduce it. Contributing to the environmental quality means financing depollution...

The early nineties Western European Cooperation reforms have followed a similar path of innovation. The most innovative change introduced by these reforms is the possibility for the Cooperative firms to comprehend, beside the traditional physical person members (PPlvI's), a certain number of...

The boolean quadric polytope Pn is the convex hull in d:= (n;l) dimensions of the binary solutions of XiXj = Yij, for all i j in N := {l, 2, ... , n} (n ~ 2). The polytope is naturally modeled by a somewhat larger polytope; namely, Qn the solution set of Yij :5 Xi, Yij :5 Xj, X, + Xj :5 1 + Yij,...

We show that, in any undirected graph, splitting off can be performed while preserving all cuts of value at most 4/3 times the minimum value, and this is best possible. This generalizes a classical splitting-off result of Lovasz.

This paper analyses the formation of trading groups in a bilateral market with strategic traders. A trading structure (a partition of the set of traders into trading groups) is strongly stable if no coalition of traders can deviate and increase the utility of some of its members while making no...

The label "Keynes-Negishi equilibria" is attached here to equilibria in a monetary economy with imperfectly competitive product and labor markets where business firms and labor unions hold demand perceptions with kinks - as posited in Negishi's 1979 book Microeconomic Foundations of Keynesian...