Actuarial Science and Financial Mathematics seminar: Job Boerma

Friday, February 27, 2026 10:30 am - 11:30 am EST (GMT -05:00)

Joint seminar with Department of Economics

Job Boerma
University of Wisconsin-Madison

Room: M3 3127


Multidimensional Sorting: Comparative Statics

In sorting literature, comparative statics for multidimensional assignment models with general output functions and input distributions is an important open question.

We provide a complete theory of comparative statics for technological change in general multidimensional assignment models. Our main result is that any technological change is uniquely decomposed into two distinct components. The first component (gradient) gives a characterization of changes in marginal earnings through a Poisson equation. The second component (divergence-free) gives a characterization of labor reallocation. For U.S. data, we quantify equilibrium responses in sorting and earnings with respect to cognitive skill-biased technological change.