Should lenders be made liable for environmental damages caused by their customers? In a recent paper Pitchford studied the case where the customer is a wealth-constrained manager-owned firm. He argued convincingly that a joint liability of lender and firm may reduce the firm's incentive to...

Kohlberg and Mertens argued that a solution concept to a game should be invariant under the addition of deletion of an equivalent strategy and not require the use of weakly dominated strategies. In this paper we study which of these requirements are satisfied by Kalai and Samet's concepts of...

We introduce notions of evolutionary stability for sets of strategies based on the following requirements: After every sufficiently small mutation of a population playing a single strategy in the set: a) No single mutant strategy can spread. b) A single mutant strategy not in the set will be...