The Economics of Competition, Collusion and In-between / Progress in Mathematics (PDF)

"Empirical evidence shows that many markets are characterized by a few large firms that behave strategically, while cohabiting with a competitive fringe of small firms. Thus, there is a need to consider general equilibrium settings that account explicitly for strategic interactions among big firms. In this short but deep book, d'Aspremont and Dos Santos Ferreira provide several solutions that can reconcile "old" and "new" approaches to market competition through a series of nested frameworks. What makes this book unique is that the authors recognize explicitly the key role played by the labor market for the product market outcome. Their work is, therefore, a fundamental contribution that will allow us to understand better how markets work. Readers will also find a wide range of tools that can be used in different applications."

- Jacques-François Thisse, CORE, Université Catholique de Louvain.

"Oligopoly in general equilibrium has proved an elusive goal in theory for decades, with Claude d'Aspremont and Rodolphe Dos Santos Ferreira among the small group of scholars that have taken it seriously. In recent years, the big data revolution has revealed just how important very large firms are, especially in international trade, and has encouraged more work breaking away from the perfectly and monopolistically competitive paradigms. This book could not be more timely therefore, and should be required reading for anyone working in this important field."

- Peter Neary, Georgetown University Qatar and Merton College, University of Oxford.