This paper characterizes equilibrium outcomes in consumer search markets taking the cost of going back to stores already searched explicitly into account. We show that the optimal sequential search rule under costly revisits is very different from the traditional reservation price rule in that...

We consider a dynamic competition game among three players, where each player can vary the extent of his competition on a per-rival basis. We call such competition targeted. We show that if the players are myopic, the weaker players eventually lose the game to their strongest rival. If instead...

We consider a dynamic (differential) game with three players competing against each other. Each period each player can allocate his resources so as to direct his competition towards particular rivals -- we call such competition selective. The setting can be applied to a wide variety of cases:...