Publications

Publications and Preprints

• GILP: An Interactive Tool for Visualizing the Simplex Algorithm, with Henry W. Robbins, David B. Shmoys, and David P. Williamson.  To appear in SIGCSE ‘2023.
• The Two-Stripe Symmetric Circulant TSP is in P [Full Journal Submission, with lots and lots of Figures!], with Billy Jin and David P. Williamson.
• The Two-Stripe Symmetric Circulant TSP is in P [Extended Abstract], with Billy Jin and David P. Williamson.  IPCO 2022.
• The Circlet Inequalities: A New, Circulant-Based Facet-Defining Inequality for the TSP, with David P. Williamson.  To appear in Mathematics of Operations Research.
• Semidefinite Programming Relaxations of the Traveling Salesman Problem and Their Integrality Gaps, with David P. Williamson.  Mathematics of Operations Research 47(1), 2022.
• An Automated Tool for Optimal Classroom Seating Assignment with Social Distancing Constraints, with Kyle Greenberg, Trey Hensel, Jody Zhu, Sander Aarts, and David B. Shmoys. To appear in the Proceedings of the IISE Annual Conference & Expo 2021.
• Root Cones and the Resonance Arrangement, with Karola Mészáros and T. Kyle Petersen.  Electronic Journal of Combinatorics 28(1), 2021.
• Subtour Elimination Constraints Imply a Matrix-Tree Theorem SDP Constraint for the TSP, with David P. Williamson. Operations Research Letters 48(3):245-248, 2020.
• Mathematics of Nested Districts: The Case of Alaska, with Sophia Caldera, Daryl DeFord, Moon Duchin, and Cara Nix. (Based on work with undergraduate students at the 2018 Voting Rights Data Institute.)  To appear in Statistics and Public Policy, 2020.  See also the project GitHub.
• Characterizing the Integrality Gap of the Subtour LP for the Circulant Traveling Salesman Problem, with David P. Williamson. SIAM Journal on Discrete Mathematics 33(4):2452–2478, 2019.
• The Unbounded Integrality Gap of a Semidefinite Relaxation of the Traveling Salesman Problem, with David P. Williamson. SIAM Journal on Optimization 28:2073-2096, 2018.
• The Mean(est) Voting System, with David Lingenbrink and Michael Orrison.  Math and Voting special issue of Math Horizons, 2016. (Based on undergraduate work at Harvey Mudd)
• Permutation Patterns in Latin Squares, with Michael Earnest. The Australasian Journal of Combinatorics, 2014. (Based on undergraduate work at the ETSU Math REU)
• Logarithmic Representability of Integers as k-Sums, with Anant Godbole, Vince Lyzinski, and Yan Zhuang.  Erdos Centennial Conference volume of Integers, 2013. (Based on undergraduate work at the ETSU Math REU)

I have several internal papers within industry.  Details are available on request.