Harry Richman

In fall 2020, I will be starting a postdoc at the University of Washington. My new website is here.

I was very recently a graduate student at the University of Michigan where my advisor was David Speyer. I am interested in problems in combinatorics, tropical geometry, and number theory. I was on the job market in fall 2019.

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


email: hrichmаn @ umiсh . еdu
office: East Hall 5080
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
Winter 2019: Math 116, Origami on Lattices


  1. "Dilated floor functions that commute," coauthored with J. C. Lagarias and T. Murayama. American Math. Monthly 123.10 (2016), pp. 1033-1038.
    arXiv:1611.05513. 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. Acta Arithmetica 187.3 (2019), pp. 271-299.
    arXiv:1806.00579. DOI: 10.4064/aa180602-21-9

  3. "Dilated floor functions having nonnegative commutator II. Negative dilations," coauthored with J. C. Lagarias. Acta Arithmetica 196.2 (2020), pp. 163-186.
    arXiv:1907.09641. DOI: 10.4064/aa190628-14-1

  4. "The distribution of Weierstrass points on a tropical curve," submitted, arXiv:1809.07920.

  5. "The tropical Manin-Mumford conjecture," in preparation.

Notes and Presentations


Analysis quals
Multiline formulas guidelines provided by Acta Arithmetica
Rubik's cube
Quotes about math
Eugenia Cheng on the lecture system
Why should I do math? (43., 35., 31., 10., 28., 8., 11., 14., 41., 26., 21., 18.)