A previous article investigated the semantic distinction between the analytical and the synthetic, and applied it to microeconomics; in the present one, the fundamental propositions of this field come to terms with the epistemological distinction between the a priori and the a posteriori (or...

This article applies to microeconomics a classic distinction of the philosophy of language, i.e., that between analytical and synthetic propositions.

De tous les problèmes conçus par la théorie de la décision, le paradoxe d'Allais est peut-être celui qui aura suscité l'intérêt le plus persistant. La théorie y a consacré assez de travaux techniques remarquables pour qu'il soit désormais possible à l'histoire et à la philosophie...

Résumé d'auteur : <p>" On présente brièvement ici la contribution de Georges-Théodule Guilbaud (1912-2006) aux théories agrégatives contemporaines. Précurseur méconnu, il anticipe la conception algébrique de l'agrégation et la théorie plus récente de l'agrégation des jugements, qui...</p>

In this paper the existence of unemployment is partly explained as being the result of coordination failures. It is shown that as a result of self-fulfilling pessimistic expectations, even at Walrasian prices, a continuum of equilibria results, among which an equilibrium with approximately no...

In exchange economies where moral hazard affects the distribution of individual risks, we study the viability of linear nonexclusive contracts. It is shown that the linearity in prices and payoffs is compatible with the presence of moral hazard when coupled with a simple participation fee. More...

When aggregating individual preferences through the majority rule in an n-dimensional spatial voting model, the "worst-case" scenario is a social choice configuration where no political equilibrium exists unless a super majority rate as high as 1-1/n is adopted. In this paper the authors assume...

We prove existence of equilibria with proportional transaction costs on asset trading, using homotopy methods.