Lerner Index: Measuring Market Power Mathematically
The lerner index measures market power as the gap between price and marginal cost relative to price, ranging from 0...
Microeconomics
Uncover individual economic decisions, supply-demand dynamics, and market behaviors that drive our world.
Hotelling Location Model: How Competitors Cluster Together
The Hotelling Location Model explains why competing firms cluster at the market centre, balancing the pull of market share against...
Spence Signalling Model: How Education Signals More Than It Teaches
The spence signalling model explains how education functions as a costly signal of ability, allowing high-productivity workers to separate themselves...
Slutsky Equation: Decomposing Price Effects into Income and Substitution Effects
The Slutsky equation decomposes any price change into substitution and income effects, providing the analytical foundation for tax policy, inflation...
Economics of Subscription Services: The Monthly Fee Economy
The economics of subscription services rests on price discrimination, switching costs, and network effects, turning everything from software to films...
Economics of Food Delivery: Gig Workers, Platform Pricing, and Market Failure
The economics of food delivery explain how DoorDash, Uber Eats, and Deliveroo built billion-dollar platforms on losses, low driver pay,...
Auction Theory Economics: From eBay Bidding to Spectrum Sales
Auction theory economics studies how bidding rules turn private valuations into prices, shaping spectrum sales, internet ads, Treasury bonds, and...
Mechanism Design Economics: Engineering Outcomes from Auctions to Matching Markets
Mechanism design economics engineers rules so self-interested agents reveal private information and produce efficient outcomes, powering FCC auctions, school choice,...
Economics of the Gig Economy: Algorithms, Classification, and Power
In the economics of the gig economy, the global gig economy reached $5.82 trillion in 2025 as 435 million workers...
The Economics of Higher Education: Is a University Degree Still Worth It?
Student debt in the US exceeds $1.77 trillion. The economics of higher education explains why a degree's return depends entirely...