THE aim of this book is to provide a course of pure mathematics that will be useful to students of economics. The earlier chapters, which deal with numbers and variables and their representation, with ...

Reaction-diffusion systems represent a fundamental mathematical framework to model the interplay between local reactive processes and diffusive transport of substances. These systems have wide-ranging ...

In the Fall I'll be starting teaching again, after a semester away on sabbatical and then enjoying teaching relief during my first semester at Penn. I'll be teaching a course that I truly love, and ...