Harry Richman

I am a fourth-year graduate student at the University of Michigan. I am interested in problems in combinatorics, tropical geometry, and number theory. My advisor is David Speyer.

Before coming to Michigan I studied math at MIT and the Math in Moscow program.


email: hrichmаn @ umiсh . еdu
office: East Hall 1860
address: 530 Church Street
Ann Arbor, MI 48109


Fall 2014: Math 115
Winter 2015: Math 116
Fall 2015: Math 216
Winter 2016: Math 116
Fall 2016: Math 215

Winter 2018: Math 116


  1. "Dilated Floor Functions that Commute," coauthored with J. C. Lagarias and T. Murayama. American Math. Monthly 123.10 (2016), pp. 1033-1038. DOI: 10.4169/amer.math.monthly.123.10.1033

  2. "Dilated Floor Functions with Non-negative Commutator," coauthored with J. C. Lagarias. In preparation.

Notes and Presentations


Analysis quals
Rubik's cube
Eugenia Cheng on the lecture system
Why should I do math?