This paper introduces a method of optimization in infinite-horizon economies based on the theory of correspondences. The proposed approach allow us to study time-separable and non-time-separable dynamic economic models without resorting to fixed point theorems or transversality conditions. When...

We develop a general procedure to construct pairwise meeting processes characterized by two features. First, in each period the process maximizes the number of matches in the population. Second, over time agents meet everybody else exactly once. We call this type of meetings “absolute...

The model of Lagos and Wright [9] alters the meeting friction of the typical search model of money to obtain degeneracy in equilibrium holdings and enhance analytical tractability. It introduces a round of Walrasian ‘centralized' trading after each round of bilateral random ‘decentralized'...