11.04.2014 Views

Public Economics Lectures Part 1: Introduction

Public Economics Lectures Part 1: Introduction

Public Economics Lectures Part 1: Introduction

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

<strong>Part</strong>ial Equilibrium Model: Supply<br />

Price-taking firms<br />

Use c(S) units of the numeraire y to produce S units of x<br />

Cost of production is increasing and convex:<br />

c ′ (S) > 0 and c ′′ (S) ≥ 0<br />

Profit at pretax price p and level of supply S is pS − c(S)<br />

With perfect optimization, the supply function for good x is implicitly<br />

defined by the marginal condition p = c ′ (S(p))<br />

Let ε S = ∂S<br />

∂p<br />

p<br />

S (p)<br />

denote the price elasticity of supply<br />

<strong>Public</strong> <strong>Economics</strong> <strong>Lectures</strong> () <strong>Part</strong> 2: Tax Incidence 11 / 142

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!