The authors investigates refinements of two solutions, the saddle and the weak saddle, defined by Shapley (1964) for two-player zero-sum games. Applied to weak tournaments, the firsy refinement, the mixed saddle, is unique and gives us a new solution, generally lying between the GETCHA and...

This paper provides a characterization of the consequences of the assumption that a decision maker with a given utility function is Choquet rational: She maximizes expected utility, but possibly with respect to non-additive beliefs, so that her preferences are represented by Choquet expected...

In this paper we examine compensation schemes that prevent a threat of secession by all country's regions and in the same time provide no incentives for citizens' migration within the country. We prove that, under quite general assumptions on the distribution of citizens' preferences, there...

This paper studies the impact of considering the incentives of candidates to strategically affect the outcome of a voting procedure. First we show that every non-dictatorial voting procedure that satisfies unanimity, is open to strategic entry or exit by candidates: there necessarily exists some...