Galois connections (or residuated mapping) are of growing interest in various domains related with or relevant from Classification. Among their many uses, we select some topics related with modelization and aggregation of dissimilarities and conceptual classification. We partially revist them in...

In this paper, we show that the correspondence discovered by Koshevoy ([18]) and Johnson and Dean ([15],[16]) between anti-exchange closure operators and path independent choice operators is a duality between two semilattices of such operators. Then we use this duality to obtain results...

This paper adapts the methods of Minimax-Hedging developped in Bernis & Giraud [2000] to other models of financial markets, including discontinuous semi-martingale. The measure of the risk is defined as the value of a zero-sum game between the investor and a fictitious player, representing the...

The purpose of this paper is to focus on Henry L. Moore's transfers from the natural sciences that enabled him to shape statistical economics. This construction led him to search statistical methods that could help him to bridge the data-theory gap, and I should like to analyze the consequences...

Cet article cherche a estimer l'impact des comportements de Pricing-to-Market sur les relations entre les taux de change et la balance commerciale.

Deux faits stylises majeurs ont ete mis en evidence en Economie geographique. D'une part, la croissance economique s'accompagne d'une augmentation des inegalites regionales au sein d'un pays. D'autre part, les externalites technologiques restent localisees dans l'espace. Cet article s'attache,...

We study the Nash bargaining solution of a problem in which two agents bargain over an uncertain outcome. Under the assumption of constant absolute risk aversion, we study the way that solution varies, ex ante, when we vary the beliefs of one agent. Changing an agent's beliefs in a way that...

Cet article utilise la methododologie de l'etude d'evenements pour estimer la valeur economique associee aux avancees therapeutiques effectuees par 71 firmes de l'indudtrie pharmaceutique.