People

Faculty

Andrea Foulkes

Chair of Mathematics and Statistics; Professor of Mathematics and Statistics
Andrea Foulkes

Sarah-Marie Belcastro

Visiting Lecturer in Mathematics

Sarah-Marie Belcastro works primarily in topological graph theory. She enjoys connecting people to each other, connecting ideas to each other, and connecting people to ideas. Among her many non-pure-mathematics interests are the mathematics of knitting, pharmacokinetics, dance (principally ballet and modern), and changing the world. Sarah-Marie currently directs the summer program, MathILy, and has taught a variety of mathematics courses — both standard and non-standard, and both undergraduate and graduate in level.

Timothy Chumley

Assistant Professor of Mathematics

Tim Chumley is a probabilist interested in working on models that arise in physics, engineering, and other areas. In the past, much of his work has focused on Markov chain models which can be generically called random billiards. His work on probabilistic limit theorems for these models aims to provide a framework for detailed study of realistic physical models of phenomena in kinetic theory of gases and classical statistical mechanics. In addition, he is interested in random walks in random media, differential geometry, and stochastic processes on manifolds.

Timothy Chumley

Giuliana Davidoff

Robert L. Rooke Professor of Mathematics
Giuliana Davidoff

Janice A. Gifford

Professor of Statistics
Janice Gifford

Nathan Gray

Visiting Instructor in Mathematics

Carrie Hosman

Visiting Lecturer in Statistics

Carrie Hosman is a statistician whose research involves creating methodologies for causal inference and observational studies, specifically involving applications in the medical and social sciences.  She has applied these methods to sociological studies of neighborhood disparities and medical studies of cardiology procedures.  In addition to research, she enjoys teaching statistics at all levels - from introductory courses to upper level courses in survey sampling and probability methods.

Alanna Hoyer-Leitzel

Assistant Professor of Mathematics

Alanna Hoyer-Leitzel does research in applications of dynamical systems. Her projects include classifying relative equilibria in the n-vortex problem (configurations of swirls in fluids that maintain their shape while translating and rotating) by looking at symmetry of their structures. Her more recent work applies the ideas of bifurcation, tipping, and disturbance to modeling resilience in climate and ecosystems. Alanna's other interests include bad scifi, cross stitching, taking pictures of her cats, and riot grrl punk music.

Alanna Hoyer Leitzel

Mark Peterson

Professor of Physics and Mathematics on the Alumnae Foundation

Mark Peterson is a physics theorist who teaches in both the physics and mathematics departments. His research includes modelling fluid dynamics in biophysical settings, innovative mathematical methods for elasticity theory, and the history of physics and mathematics, especially the life and work of Galileo.

Mark Peterson, Physics

Evan Ray

Assistant Professor of Statistics

Margaret Robinson

Julia and Sarah Ann Adams Professor of Mathematics

Margaret Robinson is a number theorist whose work combines analysis, algebra, and topology to understand number theoretic objects, in particular zeta functions. For Robinson, the research is addictive because objects from other areas of mathematics arise like strange outcrops revealing unexpected constituents in the rock of number theory. Tracking down and explaining why these startling connections exist is tantalizing, sometimes frustrating, but never boring.

Margaret Robinson

Peter Rosnick

Visiting Professor of Mathematics

Peter Rosnick is Professor Emeritus from Greenfield Community College.  He has a Bachelor Degree from Tufts University and his Ed.D from the University of Massachusetts.  He has been teaching College Mathematics since 1977.  In "retirement", in addition to teaching at Mt Holyoke, Dr. Rosnick continues to teach at GCC and also directs its Sustainable Agriculture and Green Energy Education Center.  His avocations include bicycling, theater, cinema, and hiking and snowshoeing in search of the elusive Conway moose.

Thomas Shelly

Visiting Lecturer in Mathematics

Dylan Shepardson

Associate Professor of Mathematics

Dylan Shepardson works on mathematical problems that are motivated by applications in other disciplines, like biology, epidemiology, sociology, or archaeology. He is especially interested in new and unusual applications of optimization theory. In most physical, biological, and economic systems, a property is being optimized (like energy or entropy in physical systems, or reproductive success in evolutionary biology), and optimization techniques offer interesting insights into these systems. Shepardson's recent projects include voting theory and its connections to combinatorial geometry, infectious disease modeling, and the problem of using collections of radiocarbon data to estimate dates of the earliest human settlements of Pacific islands.

Dylan Shepardson

Jessica Sidman

Professor of Mathematics on the John Stewart Kennedy Foundation

Jessica Sidman works at the intersection of algebra, geometry, and computation. In particular, she is interested in applications of computational algebraic geometry, which is a fancy way of saying that she likes seeing how to use a computer to solve problems with polynomials. Her current research is focused on using algebraic methods to analyze systems of geometric constraints that arise in rigidity theory, a subject with many applications including robotics, protein folding, and computer-aided design.

Jessica Sidman

Jordan Tirrell

Visiting Lecturer in Mathematics

Staff

Lindsay Woloszyn

Academic Department Coordinator, Mathematics and Statistics

Lindsay Woloszyn is the helpful voice you will likely connect with regarding questions about the major or events sponsored by the department.   She manages the budget, purchasing, events, award applications, and all the daily needs of faculty and majors.

 Lindsay Woloszyn