We study an optimal information/mechanism design problem for selling an object to a number of privately informed bidders, in which the winning bidder competes with a third party under differentiated Cournot competition afterwards. We show how to decompose the problem into two sub-problems:...

In the classical bargaining problems, we propose a very mild axiom of individual rationality, which we call Possibility of Utility Gain. This requires that for at least one bargaining problem, there exists at least one player who reaches a higher utility level than the disagreement point. This...