It is a widely spread belief that crypto-currencies implementing a proof of stake transaction validation system are less vulnerable to a 51% attack than crypto-currencies implementing a proof of work transaction validation system. In this article, we show that it is not the case and that, in...

We show how introducing a time discount factor can strengthen some results given in [Soubeyran R. (2006) "When Inertia Generates Political Cycles," Economics Bulletin, Vol. 4 no. 31 pp. 1-8.].

We show that the class of absolute qualified majority voting rules are the only ones to satisfy Anonymity, Neutrality, Monotonicity, Weak Pareto and Decisiveness Non-Equivalence. When there are two alternatives x and y, the latter axiom states that if an individual voting for y can improve the...

We show how introducing a time discount factor can strengthen some results given in [Soubeyran R. (2006) "When Inertia Generates Political Cycles," Economics Bulletin, Vol. 4 no. 31 pp. 1-8.].

We axiomatize the collective identity function selecting the agents that are indirectly designated by all the individuals in the society.

We show that the class of absolute qualified majority voting rules are the only ones to satisfy Anonymity, Neutrality, Monotonicity, Weak Pareto and Decisiveness Non-Equivalence. When there are two alternatives x and y, the latter axiom states that if an individual voting for y can improve the...

We axiomatize the collective identity function selecting the agents that are indirectly designated by all the individuals in the society.

We consider a model of vaccine market where the buyer is centralized and shows an endogenous demand function based on a simple stochastic SIR model. When the seller is a monopoly, we show that better vaccines (in the sense of greater efficiency or inducing less side-effects) do not imply greater...