1 Introduction
2 Representing and Measuring Networks
3 Empirical Background on Social and Economic Networks
4 Random Graph-Based Models of Networks
5 Growing Random Networks
6 Strategic Network Formation
7 Di¤usion through Networks
8 Learning and Networks
9 Decisions, Behavior, and Games on Networks
10 Networked Markets
11 Game-Theoretic Modeling of Network Formation
12 Allocation Rules, Networks, and Cooperative Games
13 Observing and Measuring Social Interaction
14 Afterword