Principles of Economics — Deep Notes

Comprehensive notes from Principles of Economics 3e (OpenStax). Covers microeconomics, macroeconomics, international trade, monetary & fiscal policy — from foundational concepts to advanced policy analysis. Every chapter, every topic, every key question.

Part 1 — What Is Economics?

📘 Ch 1 · Welcome to Economics!

Scarcity, division of labor, economic systems, micro vs macro, models & theories.

🎯 Ch 2 · Choice in a World of Scarcity

Budget constraints, opportunity cost, production possibilities frontier (PPF), sunk costs, marginal analysis.

Part 2 — Supply and Demand

📊 Ch 3 · Demand and Supply

Demand & supply curves, equilibrium, shifts, four-step process, price ceilings & floors, efficiency.

💼 Ch 4 · Labor and Financial Markets

Labor demand/supply, equilibrium wages, financial markets, interest rates, market information.

Part 3 — Fundamentals of Microeconomic Theory

📏 Ch 5 · Elasticity

Price elasticity of demand & supply, polar cases, total revenue, cross-price & income elasticity.

🛒 Ch 6 · Consumer Choices

Utility maximization, marginal utility, budget constraints, behavioral economics.

🏭 Ch 7 · Production, Costs & Industry Structure

Explicit/implicit costs, short-run & long-run production, marginal cost, economies of scale.

⚖️ Ch 8 · Perfect Competition

Price-taking firms, profit maximization, MR=MC rule, entry/exit, productive & allocative efficiency.

👑 Ch 9 · Monopoly

Barriers to entry, monopoly pricing, deadweight loss, price discrimination, natural monopoly.

🤝 Ch 10 · Monopolistic Competition & Oligopoly

Product differentiation, advertising, oligopoly models, game theory, prisoner's dilemma.

Part 4 — Microeconomic Policy Issues

🔨 Ch 11 · Monopoly and Antitrust Policy

Corporate mergers, HHI, anticompetitive behavior, natural monopoly regulation, deregulation.

🌍 Ch 12 · Environmental Protection & Negative Externalities

Pollution economics, command-and-control regulation, cap-and-trade, cost-benefit of environmental laws.

💡 Ch 13 · Positive Externalities & Public Goods

Innovation investment, patents, R&D subsidies, public goods, free-rider problem.

👷 Ch 14 · Labor Markets and Income

Marginal revenue product, monopsony, unions, bilateral monopoly, discrimination, immigration.

📉 Ch 15 · Poverty and Economic Inequality

Poverty line, poverty trap, safety net programs, Lorenz curve, Gini coefficient, redistribution.

🎲 Ch 16 · Information, Risk & Insurance

Imperfect information, adverse selection, moral hazard, insurance markets.

💰 Ch 17 · Financial Markets

Raising capital, stocks, bonds, mutual funds, personal wealth accumulation, compound interest.

🏛️ Ch 18 · Public Economy

Voter participation, special interest politics, median voter theorem, government failures.

Part 5 — The Macroeconomic Perspective & Goals

🌐 Ch 19 · The Macroeconomic Perspective

GDP measurement, nominal vs real, GDP deflator, cross-country comparison, well-being beyond GDP.

📈 Ch 20 · Economic Growth

Labor productivity, human capital, physical capital, technology, convergence, rule of 70.

📋 Ch 21 · Unemployment

Unemployment rate, labor force participation, frictional/structural/cyclical unemployment, natural rate.

🔥 Ch 22 · Inflation

CPI, GDP deflator, cost of living, hyperinflation, deflation, indexing, real vs nominal interest.

🚢 Ch 23 · International Trade & Capital Flows

Trade balance, current account, capital flows, national saving identity, trade deficits/surpluses.

Part 6 — Framework for Macroeconomic Analysis

📐 Ch 24 · Aggregate Demand / Aggregate Supply Model

AD/AS model, shifts in AD & AS, Keynesian vs Say's Law, growth, unemployment & inflation in AD/AS.

🔑 Ch 25 · The Keynesian Perspective

Aggregate expenditure, multiplier effect, Phillips curve, sticky wages & prices, Keynesian policy.

🏛️ Ch 26 · The Neoclassical Perspective

Potential GDP, flexible prices, rational expectations, policy ineffectiveness, Keynesian vs neoclassical.

Part 7 — Monetary and Fiscal Policy

🏦 Ch 27 · Money and Banking

Functions of money, M1 & M2, fractional reserve banking, money multiplier, T-accounts.

🏗️ Ch 31 · Impacts of Government Borrowing

Crowding out, twin deficits, Ricardian equivalence, fiscal policy & investment, long-run growth.