微观经济学（N. Gregory Mankiw）教学课件ch16.pdfVIP

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微观经济学（N. Gregory Mankiw）教学课件ch16.pdf

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C H A P T E R 16 Oligopoly P R I N C I P L E S O F Economics N. Gregory Mankiw bannannan@dufe.edu.cn © 2009 South- Western, a part of Cengage Learning, all rights reserved  Competition and monopoly are extreme forms of market structure. Many industries fall somewhere between these two extremes.  Firms in these industries have competitors but, at the same time, do not face so much competition that they are price takers. This situation is called imperfect competition. OLIGOPOLY 1 Between Monopoly and Perfect Competition  Types of imperfectly competition  Oligopoly a market structure in which only a few sellers offer similar or identical products oligopolistic firms are interdependent  Monopolistic Competition a market structure in which many firms sell products that are similar but not identical OLIGOPOLY 2 The Four Types of Market Structure Number of Firms? Many firms Type of Products? One Few Differentiated Identical firm firms products products Monopoly Oligopoly Monopolistic Perfect (Chapter 15) (Chapter 16) Competition Competition (Chapter 17) (Chapter 14) • Tap water • Tennis balls • Novels • Wheat •