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Public Economics Lectures Part 1: Introduction

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Bergstrom, Blume, and Varian (1986): Setup<br />

Individual h solves:<br />

max Uh (X h , G h + G−h)<br />

X h ,G h<br />

s.t. X h + G h = Y h<br />

FOC is U h X = Uh G<br />

Nash equilibrium exists and is unique<br />

G s.t. all individuals optimize given others’behavior<br />

Let G ∗ denote private equilibrium outcome<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 7: <strong>Public</strong> Goods and Externalities 33 / 138

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