I am an Assistant Professor of Mathematics at Mount Holyoke College. Previously, I was an NSF Alliance for Building Faculty Diversity Postdoctoral Fellow at Iowa State University. Before that, I got my PhD in mathematics at Washington University in St. Louis.
See my cv for more details.
My office hours for Spring 2019 are tentatively Mondays 4:00–5:00, Tuesdays 11:00–12:00, Wednesdays 9:00–10:00, Thursdays 4:00–5:00, and by appointment.
Research
I’m interested in probability theory, stochastic processes, and their applications. In the past few years I’ve worked on problems that overlap with billiard dynamical systems, differential geometry, and statistical physics.
Students
In Summer 2017, I worked with Qiran (Karen) Dong and Fanyi (Young) Yang (Mount Holyoke), on a project studying random billiard systems with nonholonomic (rolling) constraints. Here is their talk.
In 2016, I worked with Tianle (Jeff) Yang (Iowa State) on a project studying the Lorentz gas model with random scatterer collisions.
Papers

T. Chumley and R. Feres. Entropy production in random billiards and the second law of thermodynamics . ArXiv eprints, 2019. [ arXiv ]

T. Chumley, S. Cook, C. Cox, and R. Feres. Rolling and noslip bouncing in cylinders. ArXiv eprints, 2018. [ arXiv ]

O. Aydogmus, T. Chumley, A. Matzavinos, and A. Roitershtein. Morantype bounds for the fixation probability in a frequencydependent WrightFisher model. J. Math. Biol., 76(1):1–35, 2018. [ DOI  arXiv ]

T. Chumley, R. Feres, and H.K. Zhang. Diffusivity in multiple scattering systems. Trans. Amer. Math. Soc., 368(1):109–148, 2016. [ DOI  arXiv ]

T. Chumley, R. Feres, and M. Wallace. Exact discretization of harmonic tensors. ArXiv eprints, 2016. [ arXiv ]

T. Chumley, S. Cook, and R. Feres. From billiards to thermodynamics. Comput. Math. Appl., 65(10):1596–1613, 2013. [ DOI  arXiv ]
Teaching
Current courses
In Spring 2019, I’m teaching
Past courses
 Math 102: Calculus II (Fall 2016)
 Math 211: Linear Algebra (Spring 2017)
 Math 232: Discrete Math (Fall 2018)
 Math 333: Differential Equations (Spring 2018)
 Math 339SP: Stochastic Processes (Spring 2017, 2018, 2019)
 Math 342: Probability (Fall 2016, 2017, 2018)
 Stat 395: Independent study, Statistical Analysis of Networks (Fall 2017)
Prior to coming to Mount Holyoke I taught:
 Introduction to Statistics (Summer 2009, Summer 2010 at Washington University)
 Calculus I (Summer 2008 at WUSTL)
 Calculus II (Fall 2013, Fall 2015 at Iowa State University)
 Linear Algebra (Summer 2012 at WUSTL, Spring 2014 at ISU)
 Real Analysis (Fall 2014 at ISU)
Miscellaneous