Contact information:


About me: I am originally from the north shore of Boston, Massachusetts, and joined the Amherst College Department of Mathematics and Statistics in 2014.  I specialize in Number Theory, in particular on modular and mock modular forms, harmonic Maass forms, quantum modular 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 Grant for research and outreach.  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.   

Office location:  Seeley Mudd Building, 302
Office hours:  TBA

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, Full Professor 2019-present; Associate Professor 2014-2019.  

  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. National Science Foundation Grant (P.I.) 2019-2022

  2. A.M. (hon.), Amherst College, 2019

  3. Simons Fellow in Mathematics 2018-2019

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

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

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

  7. Amherst College Trustee Faculty Fellowship 2015-2016

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

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

  10. Yale University Junior Faculty Fellowship 2012-2013

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

  12. University of Wisconsin-Madison Honored Instructors Award 2009