Stephen Laffey

Economics · Market Design · Forecasting

I have an MSc in Econometrics and Mathematical Economics from Tilburg University and a BA in Economics from Colorado State University.

My interests include game theory, market design, and applied forecasting. My work has ranged from mathematical research on matching stability to revenue forecasting for universities and local government.

Stephen Laffey explaining matching theory at a chalkboard

Selected work

Limited Farsightedness and Pairwise Stability in Two-Sided Matching Problems

I study how stability in two-sided matching changes when participants consider different numbers of future steps. The thesis develops a framework with heterogeneous planning horizons and examines its implications through proofs and counterexamples.

View thesis on WorldCat

Nagell–Lutz Theorem: Finding Points of Finite Order for Elliptic Curves

A course poster introducing rational torsion points on elliptic curves and illustrating the Nagell–Lutz theorem through worked examples.

View poster (PDF)

Experience

Forecasting and statistical analysis

At CSU, I developed an enrollment and fee-revenue forecasting model and worked on student-fee survey analysis. I also co-directed sales-tax forecasting for Fort Collins and Loveland, presenting forecasts to municipal and county representatives.

Teaching and university governance

I was a teaching assistant for Economic Forecasting, chaired CSU’s University Facility Fee Advisory Board, and served as the student representative on its budget-model redesign technical committee.