PART ONE: SETTING THE STAGE 1. The Costs—and Occasionally the Benefits—of Monopoly 2. An Overview of the Antitrust Laws PART TWO: COLLUSION 3. Price Fixing and the Oligopoly Problem 4. Breaking Up Large Firms 5. Horizontal Mergers, Potential Competition, and Market Definition 6. Two Problems of Collusion PART THREE: EXCLUSIONARY PRACTICES 7. Exclusionary Practices (1) 8. Exclusionary Practices (II): The New Economy PART FOUR: ADMINISTERING ANTITRUST LAW 9. Toward the Simplification of Antitrust Doctrine 10. The Problem of Enforcement Appendix: An Introduction to the Formal Analysis of Monopoly