[fre] Cet article fournit un tableau complet de l'état actuel de la théorie de l'« agence commune » en information complète qui étudie les situations dans les­quelles un Agent unique ( le « mandataire ») choisit une action (éventuellement pluridimensionnelle) qui affecte la fonction de...

This paper presents a model of nations where agents vote on the optimal level of public spending. Larger nations benefit from increasing returns in the provision of public goods, but bear the costs of greater cultural heterogeneity. This tradeoff induces agents' preferences over different...

We study the distribution of a fixed amount of "favors" by an incumbent politician between two pressure groups, each of them offering to the agent a campaign contribution contingent on the quantity of "favors" received. Assuming that the total amount supplied is a private information of the...

This article studies a model of coalition formation for the joint production (and finance) of public projects, in which agents may belong to multiple coalitions. We show that, if projects are divisible, there always exists a stable (secession-proof) structure, i.e., a structure in which no...

In this article we use the theory of power indices to evaluate the respective influence of the two classes of electors in the polling method introduced by the electoral law of 29 June 1820, known as the law of ?double vote?. We show in a simplified framework that the voting power of the ?major?...

The authors consider strategyproof social choice functions defined over product domains. If preferences are strict orderings and separable, then strategyproof social choice functions must be decomposable provided that the domain of preferences is rich. The authors provide several applications of...

We consider a model of the “world" with several regions that may create a unified entity or be partitioned into several unions (countries). The regions have distinct preferences over policies chosen in the country to which they belong and equally share the cost of public policies. It is known...