The main criticism to the aggregation of individual preferences under majority rules refers to the possibility of reaching inconsistent collective decisions from the election process. In these cases, the collective preference includes cycles and even could prevent the election of any alternative...

Reciprocal preferences have been introduced in the literature of social choice theory in order to deal with preference intensities. They allow individuals to show preference intensities in the unit interval among each pair of options. In this framework, majority based on difference in support...

We provide exact relations giving the probability of individual and coalitional manipulation of three specific social choice functions (Borda rule, Copeland rule, Plurality rule) in three-alternative elections when the notion of self-selectivity is imposed. The results suggest that the Borda...

La composition du parlement libanais est basée sur un compromis entre les différentes confessions religieuses de ce pays, souvent considéré comme seule démocratie parlementaire de l’Orient arabe. A partir des outils de la théorie des jeux coopératifs et en utilisant les fichiers...