When preferences are single-peaked (Black (1948),Black et al. (1958)) or group separable Ballester and Haeringer (2011), majority voting equilibria exist. Group separability has probably not received as much attention as single-peak separability because there are no intuitive assumptions about...

In most OECD countries direct public funding to political parties is provided and its allocation is executed on the basis of two principles, i.e., (i) proportional to the votes (or alternatively the number of seats), and (ii) equal distribution. We consider the existence of an optimal policy and...

Consider the following principle regarding the performance of collective choice rules. "If a rule selects alternative x in situation 1, and alternative y in situation 2, there must be an alternative z, and some member of society whose appreciation of z relative to x has increased when going from...

Currently, the preparations of the exams are made by the teaching or responsible teams to evaluate the students or applicants through an objective test to subsequently get a grade. We propose a system based on the use of Blockchain technology and smart contracts that would allow an automated...