I am honored to be giving the 2025-26 Charles R. DePrima Memorial Lecture for the Mathematics Department of the California Institute of Technology. This lecture series aims to bring mathematical researchers to Caltech to give talks for a primarily undergraduate audience.

This invitation truly gives me a lot of pleasure, first, because Caltech is my alma mater (B.S. Mathematics 1988), but second, because my daughter is currently an undergraduate student at Caltech, majoring in mathematics. So I am looking forward to this talk.