A social choice correspondence called the Essential Set is studied with the help of an axiom called Cloning Consistency.

In this paper, concepts from the theory of electoral competition are applied to the classical problem of dividing one unit of a homogeneous good. If the Uncovered set selects almost all divisions, other concepts (Minimal Covering set, Bipartisan set) predict that very unequal divisions are not...

In this paper, we examine the problem of ranking individual opportunity sets on the basis of their freedom of choice in a social setting.

Following a long-standing philosophical tradition, impartiality is a distinctive and determining feature of moral judgements, especially in matters of distributive justice. This broad ethical tradition was revived in welfare economics by Vickrey, and aboce all, Harsanyi, under the form of the...

With too much disparity in opinions, minorities may question the legitimacy of majority voting and indermine the unity of the group through political violence or civil disobedience. Properties of an average vvoting rule are investigated here, with particular attention to its ability to protect...