Networks and Economics 1

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" summary

Presents concrete results and tools: threshold coordination games produce multiple equilibria that form a complete lattice; best‑shot public goods equilibria equal maximal independent sets and are NP‑hard to enumerate; a linear‑quadratic model yields closed‑form actions proportional to Katz–Bonacich centrality (solution requires B/C below the spectral bound); on stochastic block models equilibria concentrate on blocks under weak homophily; empirical fit on Add Health gives a 40% threshold best fit and mispredicts ~30% of nodes.

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" chapters (21)

1. 0:00Start
2. 2:13Pure Effects
3. 6:27Nash Equilibrium
4. 16:44Strategic Complements and Substitutes
5. 18:41Equilibrium Structure
6. 18:58Strategic Substitutes Strategic Complements
7. 22:10Negative Externality
8. 24:54Congestion Games
9. 25:32Complementarities and Strategic Substitutes
10. 28:30Vaccinations
11. 30:27Partial Orderings
12. 34:20Equilibrium Existence and Structure
13. 40:18Pure Strategy Equilibrium
14. 43:01Community Detection
15. 46:09Simple Contagion
16. 48:17Stochastic Block Models
17. 48:34Theorem on Stochastic Block Models
18. 51:20Homophily
19. 1:15:31Linear Quadratic Models
20. 1:21:13Page Rank
21. 1:24:39Structural Modeling