I.

Introduction

II.

Conditions for Oligopoly

III.

The Role of Beliefs and Strategic Interaction

IV.

Profit Maximization in Four Oligopoly Settings

V.

Comparing Oligopoly Models

VI.

Contestable Markets

VII.

Answering the Headline

VIII.

Summary

IX.

Key Terms and Concepts

X.

Conceptual and Computational Questions

XI.

Problems and Applications

XII.

Case-Based Exercises

XIII.

Selected Readings

XIV.

Appendix: Differentiated-Product Bertrand Oligopoly