Ranjan was the College’s Teacher of the Year in 1986 and again in 2000. He has received two notable awards from the Mathematical Association of America: the Allendoerfer Prize for expository writing in 1990 and being named a Distinguished Teacher of Mathematics in 2001.
His research interests include algebraic number theory, hypergeometric series, differential equations, and the history of mathematics.
Dr. Roy’s book Special Functions with co-authors Richard Askey and George Andrews was published in 1999, and his book Sources in the Development of Mathematics: Series and Products from the Fifteenth to the Twenty-First Century appeared in 2011. In 1997, he taught a first-year seminar on Indian mythology. In summer 2013, he mentored Jianing Xu ’13 in a Beloit College Sanger Summer Scholars Project on examples of the modularity theorem.