Email: hchau [at sign] uw [full stop] edu

I am a 4th year graduate student in mathematics at the University of Washington doing research in algebraic combinatorics under Sara Billey. My research interests are in higher Bruhat orders of the symmetric group.

I previously worked as a software engineer at Facebook working on programming language servers and remote development tools.

My curriculum vitae is available here.

*The Forb-Flex Method for Odd Coloring and Proper Conflict-Free Coloring of Planar Graphs*(joint with James Anderson, Eun-Kyung Cho, Nicholas Crawford, Stephen G. Hartke, Emily Heath, Owen Henderschedt, Hypemin Kwon, Zhiyuan Zhang). Preprint.*Enumerating Higher Bruhat Orders*Submitted to FPSAC 2024.*Can We Count on Deep Learning: Characterizing Combinatorial Structures with Interpretability*(joint with Helen Jenne, Davis Brown, Jackson Warley, Tim Doster, Henry Kvinge). Math-AI Workshop at NeurIPS 2023, available at https://mathai2023.github.io/papers/10.pdf.

*Spring 2023*: I mentored an undergraduate student Dang Phan as part of the Washington Directed Reading Program (WDRP). He studied tilings and patterns and wrote two programs: one to generate tilings given a motif and symmetry group, and another to generate random tilings given a set of Wang tiles.*Summer 2022*: I taught a computing course for math graduate students. Topics covered include graph algorithms, numerical linear algebra, Voronoi diagrams, Gröbner bases.*Fall 2021 - Spring 2022*: I organized a combinatorics seminar with graduate student speakers.*Fall 2021*: I mentored an undergraduate student Tammy Chau as part of the Washington Directed Reading Program (WDRP). She studied wallpaper groups and here are the slides for her final presentation.

*Higher Weak Orders of Affine Permutations*- Combinatorics and Geometry Seminar, March 2023, University of Washington.*Commutation Classes of Permutations*- Math and CS Seminar, November 2022, University of Puget Sound.

- I write puzzles for puzzle hunts. Here are three in increasing order of difficulty: The Shooting Gallery, Cross-stitched Words, Dispel the Bees.
- I participate in game jams as a hobby. My best games are Edna (8th out of 5304), Shuffolks! (19th out of 5712), and Limbo Library (24th out of 3206).