Two firms sell a homogeneous product to two buyers who differ significantly in their valuation of the good and are allowed to charge (possibly) multiple two-part tariffs. Firms decide upon optimal prices and the choice of sales technologies which help acquire revenues from nonlinear prices....

Two firms selling a homogenous product to two types of buyers are involved in a sequential pricing game with zero costs. The pricing strategy available involves a fixed price and a royalty. It is shown that there exists a unique subgame perfect equilibrium with positive profits to both firms if...

Modern economies rely heavily on their infrastructure networks. These networks face threats ranging from natural disasters to human attacks. As networks are pervasive, the investments needed to protect them are very large; this motivates the study of targeted defense. What are the 'key' nodes to...