This paper provides an introduction to the analysis of games with strategic complementarities and applications to industrial organization: oligopoly pricing, comparative statics and a taxonomy of strategic behavior in two-stage games. D 2005 Elsevier B.V. All rights reserved. JEL classification: C72; L13

In this paper, I find that real U.S. GDP is better characterized as a trend stationary Markov-switching process than as having a (regime-dependent) unit root. I examine the effects of both assumptions on the analysis of business cycle features and their implications for the persistence of the dynamic response of output to a random disturbance. JEL Classification: E32, C22, E27.

JEL classification: C51 C52 G11

This Online Appendix to the paper titled “Progressive Learning” presents the proof of Lemma 0, an extension of our equilibrium characterization allowing for mixed strategies, an analysis of the full commitment case, and details for Example 4 showing that path dependence can arise even when shocks are ergodic. JEL Classification Codes: C73, D86

This paper provides a theoretical fractional cointegration analysis in a nonparametric framework. We solve a generalized eigenvalues problem, extending Bierens’ (1997) approach. To this end, a couple of random matrices is constructed, distinguishing between stationary and nonstationary part of the fractional integrated process. The asymptotic behavior of such matrices is studied and convergence...

We investigate the connection between equilibrium existence and its attainability through simple market mechanisms in exchange economies with indivisibilities and complementarities. The analysis suggests that attaining efficient outcomes through simple non-combinatorial auctions may be problematic even when market clearing prices exist. JEL classification code: C62, D44, D51

The purpose of this paper is to provide a normative analysis of some migration issues. Our main objective is to develop a social-choice theoretical framework to evaluate alternative immigration policies of a country. For illustrative purposes, we present some simple results that are characterizations of some policy evaluation functions that have some specific features. JEL Classification Number...