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. arXiv:1611.05513. American Math. Monthly 123.10 (2016), pp. 1033-1038. DOI: 10.4169/amer.math.monthly.123.10.1033

  2. "Dilated floor functions having nonnegative commutator I. Positive and mixed sign dilations," coauthored with J. C. Lagarias. arXiv:1806.00579. Submitted.

  3. "Dilated floor functions having nonnegative commutator II. Negative dilations," coauthored with J. C. Lagarias, in preparation.

  4. "Equidistribution of higher Weierstrass points on tropical curves," in preparation.

Notes and Presentations


Analysis quals
Rubik's cube
Eugenia Cheng on the lecture system
Why should I do math? (43., 35., 31., 10., 28., 8., 11., 14., 41., 26., 21., 18.)