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Ever since A.C.Cournot(1838), economists have been increasingly interested in oligopoly, a state of industry where firms producing homogeneous goods or close substitutes are limited in number. The fewness of firms in oligopoly gives rise to interdependence which they have to take into account in choosing their optimal output or pricing policies in each production period. Since each firm's profit is a function of all firms' outputs in an oligopoly without product differ entiation, each firm in choosing its optimal output in any period has to know beforehand all other rival firms' outputs in...

This book gives a comprehensive survey and complete mathematical development of the theory of multi-product oligopolies. Existence and uniqueness of the Nash-Cournot equilibria as well as its stability are analysed for the multi-product Cournot model and for its variants such as labor-managed industries, saturated markets, rent-seeking oligopolies and presence of production adjustment costs. Applications are discussed for network oligopolies, taxation, water resources management, and international fishery. The controllability of multi-product Cournot markets is also briefly analysed.