Amanda L. Folsom, a Van Vleck at the UW from 2007-2010, will receive the 2021 Mary P. Dolciani Prize for Excellence in Research from the American Mathematical Society (AMS). Folsom is a Professor of Mathematics at Amherst College. She was awarded the prize for her outstanding record of research in analytic and algebraic number theory, with applications to combinatorics and Lie theory, for her work with undergraduate students, and for her service to the profession, including her work to promote success of women in mathematics.