The question addressed in this paper is the order of magnitude of the difference between the Borda rule and any given social choice function. In this paper, a simple measure of the difference between the Borda rule and any given social choice function is proposed. It is given by the ratio of the...

The rule used by the United States Figure Skating Association and the International Skating Union, hereafter the ISU Rule, to aggregate individual rankings of the skaters by the judges into a final ranking, is an interesting example of a social welfare function. This rule is examined thoroughly...

Cet article illustre les difficultes inherentes au processus democratique a partir des resultats d'une consultation tenue a l'Universite Laval, dans le cadre de la nomination d'un doyen.

Given the choice sets produced by a pair of Condorcet social choice correspondence, the following intersting questions arise. Does one of these sets always contain the other? If not, do they always interest or on the contrary can they have an empty intersection? Laffond, Laslier and Le Breton...

The Serial Cost Sharing Rule has been conceived originally for problems where agents ask for different quantities of an homogeneous private good, the sum of which is produced by a single facility. In this context, it is endowed with a variety of desirable equity and coherency properties. This...