The Douglas Lectures honor Distinguished Professor Ronald Douglas, who was a member of the Department of Mathematics from 1996 until 2018. Douglas Lecturers are distinguished mathematicians who work in an area close to the research interests of the honoree (operator theory, Banach and C* algebras). The series typically consists of three lectures over the course of a week during the academic year. The series is made possible by an endowment established through generous initial gifts from Ciprian Foias and Carl Pearcy, augmented by contributions from friends and colleagues of Professor Douglas.