We analyze the design of a mechanism to extract a ranking of individuals according to a unidimensional characteristic, such as ability or need. Individuals, connected on a social network, only have local information about the ranking. We show that a planner can construct an ex post incentive...

This paper analyzes farsighted stability when agents have heterogeneous expectations over the dominance paths. We consider expectation functions satisfying the two properties of justifiability and maximality and define stable alternatives as unique stationary points of the expectation function...

This paper analyzes taxation of an Internet platform attracting users from different jurisdictions. When corporate income tax rates are different in the two jurisdictions, the platform distorts prices and outputs in order to shift profit to the low-tax country. We analyze the comparative statics...

This paper analyzes the optimal protection strategy for an innovator of a complex innovation who faces the risk of imitation by a competitor. We suppose that the innovation can be continuously fragmented into sub-innovations. We characterize the optimal mix of patent and trade secrets when the...

This paper analyzes farsighted stable sets when agents have heterogeneous expectations over the dominance paths. We consider expectation functions satisfying two properties of justifiability and maximality. We characterize singleton farsighted stable sets with heterogeneous expectations in...