In this paper, we demonstrate the efficiency of seller entry in a model of competing auctions in which we allow for both buyer and seller heterogeneity. This generalizes existing efficiency results in the competitive search literature by simultaneously allowing for nonrival (many-on-one)...

We characterize the unique equilibrium of a competitive continuous time game between a resource-constrained informed player and a sequence of rivals who partially observe his action intensity. Our game adds noisy monitoring and impatient players to Aumann and Maschler (1966), and also subsumes...

The authors document and attempt to explain the observation that automobile insurance premiums vary dramatically across cities. The authors argue that high premiums can be attributed, at least in part, to large numbers of uninsured motorists in some markets, while uninsured motorists can be...