Contact information:


About me: I am originally from the north shore of Boston, Massachusetts, and joined the Amherst College Department of Mathematics and Statistics as an Associate Professor in 2014.  I specialize in Number Theory, in particular on modular and mock modular forms, harmonic Maass forms, q-series, and related objects, with some applications to Combinatorics, Mathematical Physics, and Representation Theory.  Most of my research publications are accessible on this page.  My co-authored book on “Harmonic Maass Forms and Mock Modular Forms: Theory and Applications” is available here.  In addition to research, I am actively involved in teaching, mentoring, and mathematics outreach.  In particular, I’m co-creator of S.U.M.R.Y., and have been involved with the Yale National Initiative for public school teachers.  I also regularly advise undergraduate research at Amherst College.  I am grateful for the partial support of a National Science Foundation NSF CAREER Grant (2013-19) for research and outreach.  I was also named a Simons Fellow in Mathematics for 2018-2019.  You can read more about these things by following the links to my research publications, teaching page, CV, and math outreach page, as well as the other links towards the top of this page.   

Note:  I am on sabbatical/leave for the 2018-19 academic year.  For the Spring 2019 semester, I will be a Member at the Institute of Advanced Study, Princeton. Please contact me via email.

email:  afolsom [AT] amherst [DOT] edu


  1. Ph.D., Mathematics, University of California, Los Angeles, 2006

  2. M.S., Mathematics, University of California, Los Angeles, 2002

  3. B.A. (honors), Mathematics, University of Chicago, 2001


  1. Amherst College, Associate Professor 2014-present.  

  2. Yale University, Associate Professor 2014; Assistant Professor 2010-2013.  

  3. University of Wisconsin-Madision, National Science Foundation Postdoctoral Fellow & VanVleck Assistant Professor, 2007-2010

  4. Max Planck Institute for Mathematics, Bonn, Germany, Postdoctoral Fellow, 2006-2007

Grants and Awards

  1. Simons Fellow in Mathematics 2018-2019

  2. Institute for Advanced Study Princeton, von Neumann Fellow and Member, Spring 2019 and Spring 2016

  3. National Science Foundation CAREER Award (P.I.) 2013-2019

  4. PROSE Award, Association of American Publishers, Best Scholarly Book in Mathematics 2018

  5. Amherst College Trustee Faculty Fellowship 2015-2016

  6. National Science Foundation Conference Grants (co-P.I.) 2018 and 2016

  7. National Science Foundation Grant (P.I.) 2010-2013

  8. Yale University Junior Faculty Fellowship 2012-2013

  9. National Science Foundation Postdoctoral Fellowship (P.I.) 2007-2010

  10. University of Wisconsin-Madison Honored Instructors Award 2009