This paper introduces the notion of nested best-response potentials for complete in- formation games. It is shown that a unique maximizer of such a potential is a Nash equilibrium that is robust to incomplete information in the sense of Kajii and Morris (1997, mimeo).

This paper introduces the notion of nested best response potentials for complete information games. It is shown that a unique maximizer of such a potential is a Nash equilibrium that is robust to incomplete information in the sense of Kajii and Morris (1997, mimeo).

The coordinating role of a redundant security is its role in markets with transaction costs to coordinate different consumers’ security demands so as to clear all security markets and, simultaneously, attain a given commodity allocation. The purpose of this paper is to prove that, under some...