James Friedman provides a thorough survey of oligopoly theory using numerical examples and careful verbal explanations to make the ideas clear and accessible. While the earlier ideas of Cournot, Hotelling, and Chamberlin are presented, the larger part of the book is devoted to the modern work on oligopoly that has resulted from the application of dynamic techniques and game theory to this area of economics. The book begins with static oligopoly theory. Cournot's model and its more recent elaborations are covered in the first substantive chapter. Then the Chamberlinian analysis of product differentiation, spatial competition, and characteristics space is set out. The subsequent chapters on modern work deal with reaction functions, advertising, oligopoly with capital, entry, and oligopoly using noncooperative game theory. A large bibliography is provided.

These proceedings are from a conference held at the Centre for Regional Science (CERUM) at Umea Umeâ University, Sweden, 17-18 June 2001. Unlike Un1ike many conference proceedings, this volume contains only on1y invited invited contribu contribu tions tions on specified topics so as to make the book coherent and self-contained. The authors and editors hope that this coherence will make the volume use fu1 fuI also as a text for courses in industrial organisation. To this end two chap ters on the history of oligopoly theory, from the beginnings with Cournot 1838, to the present day, and one chapter on modem methods for analysing iterated discrete time maps, have been inserted at the beginning ofthe book. Unlike Un1ike most current literature on games and oligopoly, this book is not focused on the usual topics of game theory: optimal strategies, dominance, and equilibrium. Rather it is the evolutionary dynamics, often of a complex type, inc1uding deterministic chaos, which are in focus. The contributions, after the historical and the methodological introductions, represent various segments of the research frontier in this area, though pains have been taken to tie some of the models to a number of most promising contributions from the frugal period 1929-1941, which have suffered from unjust neglect in the following industrial organisation literature.

Fudenberg and Tirole use the game-theoretic issues of information, commitment and timing to provide a realistic approach to oligopoly.

This state-of-the-art collection of papers on the theory of Cournotian competition focuses on two main subjects: oligopolistic Cournot competition and contests. The contributors present various applications of the Cournotian Equilibrium Theory, addressing topics such as equilibrium existence and uniqueness, equilibrium structure, dynamic processes, coalitional behavior and welfare. Special emphasis is placed on the aggregative nature of the games that are relevant to such theory. This contributed volume was written to celebrate the 80th birthday of Prof. Koji Okuguchi, a pioneer in oligopoly theory.

This book develops a theory that radically reconceptualizes the economic forces producing regional change and tests it empirically for a set of fifteen sectors in the U.S. It offers a pioneering approach which should enable planners and managers to better cope with baffling changes in the current economic viability of regions. The dramatic shifts in heartland regional economies in the U.S. and other advanced industrial countries have thrown into question the ability of capitalist development to produce permanent growth, economic well being, and balanced regional development. This book develops a theory that radically reconceptualizes the economic forces producing regional change and tests it empirically for a set of fifteen sectors in the U.S. It offers a pioneering approach which should enable planners and managers to better cope with baffling changes in the current economic viability of regions. Traditional theories of regional development have failed to account for innovation and longrun structural change. They have ignored the role of corporate strategy and the existence of market power. Markusen's profit-cycle theory provides a key to understanding how, why, and when a region's leading industries undergo major changes. The theory is synthetic, building upon Schumpeterian and Marxist work on innovation and capitalist dynamics, upon the product cycle theories of business economists, and upon theories of oligopolistic behavior. Markusen argues that changing sources of profitability along an industry's evolutionary path will first concentrate and later disperse production geographically, setting in motion a methodically destabilizing process for regional economies. The profit-cycle theory is tested in depth against the steel sector's experience over a century, and against the experiences of sectors in different stages of development, ranging from innovative ones like semiconductors and computers, to mature and troubled sectors like automobiles, textiles, and lumber. The temporal and crosssectional data drawn from the census of manufactures support the theory and its spatial hypotheses. In a final chapter Markusen explores the implications of the research for regional development.

In this book a rigorous, systematic, mathematical analysis is presented for oligopoly with multi-product firms in static as well as dynamic frameworks in the light of recent developments in theories of games, oligopoly and industrial organization. The general results derived in this book on oligopoly with multi-product firms contain, as special cases, all previous results on oligopoly with single product as well as oligopoly with product differentiation and single product firms. A constructive nu- merical method is given for finding the Cournot-Nash equilibrium, which may be extremely valuable to those who are interested in numerical analysis of the effects of various industrial policies. A sequential adjustment process is also formulated for finding the equilibrium. Dynamic adjustment processes have two versions, one with a discrete time scale and the other with a continuous time scale. The stability of the equilibrium is thoroughly investigated utilizing powerful mathematical results from the stability and linear algebra literature. The methodology developed for analyzing stability proves to be useful for dynamic analysis of economic models.

This book presents the latest trends, methods and results in nonlinear dynamics with a special focus on oligopolies. It contains a number of technical appendices that summarize techniques of global dynamics not easily accessible elsewhere.