Todd Eisworth is a professor in the Mathematics Department at Ohio University. He is primarily a set-theorist, with a keen interest in applications of set theory in other areas of mathematics, particularly topology.
A native of Zachary, Louisiana, he obtained his undergraduate degree in mathematics from Louisiana State University. He went on to obtain his doctorate in mathematics under the tutelage of Andreas Blass at the University of Michigan. After leaving Ann Arbor, he spent three years working as a temporary assistant professor at the University of Kansas, primarily with Judy Roitman and Bill Fleissner, and then he moved to Jerusalem to spend two years working with Saharon Shelah. After a short stint as a visiting professor at Ohio University, he took a tenure track job at the University of Northern Iowa before returning to Ohio University permanently in 2004.
He has made contributions in several areas of set theory and topology, but his current research focus is on pcf theory, a powerful tool for analyzing the structure of infinite products, and its applications to combinatorial set theory. Other recent work has touched on the theory of uncountable linear orders and connections between topology, Ramsey theory, and large cardinals.