Papers

Pure Math

Algebraic Geometry

Fibonacci, golden ratio, and vector bundles

Mathematics 9 no. 4 (2021).

Chow quotients of Grassmannians by diagonal subtori 

with Xian Wu.  Proceedings of the Facets in Algebraic Geometry conference in honor of William Fulton's 80th birthday, to appear (2020).

Equations for point configurations to lie on a rational normal curve

with Alessio Caminata, Han-Bom Moon, and Luca Schaffler. Advances in Mathematics 340 (2018), 653-683.

Modular interpretation of a non-reductive Chow quotient

with Patricio Gallardo.  Proceedings of the Edinburgh Mathematical Society 61 no. 2 (2018), 457-477.

A simplicial approach to the effective cone of \bar{M}_{0,n}

with Brent Doran and Dave Jensen. International Mathematics Research Notices no. 2 (2017), 529-565.

Projective linear configurations via non-reductive actions

with Brent Doran. Preprint on arXiv.

The dual complex of \bar{M}_{0,n} via phylogenetics

Archiv der Mathematik 106 no. 6 (2016), 525-529.

Factorization of point configurations, cyclic covers and conformal blocks

with Michele Bolognesi. Journal of the European Mathematical Society 17 (2015), 2453-2471. 

On Kapranov's description of \bar{M}_{0,n} as a Chow quotient

with W.D. Gillam. Turkish Journal of Mathematics 38 (2014), 625-648. 

GIT compactifications of M_{0,n} and flips

with Dave Jensen and Han-Bom Moon.Advances in Mathematics 248 (2013), 242-278.

Conformal blocks and rational normal curves

Journal of Algebraic Geometry 22 (2013), 773-793.

The cone of type A, level one conformal blocks divisors

with Angela Gibney. Advances in Mathematics 231 (2012), 798-814.

GIT compactifications of M_{0,n} from conics 

with Matthew Simpson. International Mathematics Research Notices no. 14 (2011), 3315-3334.

Tropical Geometry/Matroids

The universal tropicalization and the Berkovich analytification 

with J.H. Giansiracusa. Kybernetica 58 no.5 (2022), 790-815.

Point configurations, phylogenetic trees, and dissimilarity vectors

with Alessio Caminata, Han-Bom Moon, and Luca Schaffler.Proceedings of the National Academy of Sciences (PNAS) 118 n. 12 (2021).

Matroidal representations of groups

with Jacob Manaker. Advances in Mathematics 366 (2020).

A module-theoretic approach to matroids 

with Joshua Mundinger and Colin Crowley. Journal of Pure and Applied Algebra 224 no. 2 (2020), 894-916.

A Grassmann algebra for matroids

with J.H. Giansiracusa.Manuscripta Mathematica 156 no. 1 (2018), 187-213.

Equations of tropical varieties

with J.H. Giansiracusa.Duke Mathematics Journal 165 no. 18 (2016), 3379-3433.

Miscellaneous

Experimental study of energy-minimizing point configurations on spheres

group project led by Henry Cohn. Experimental Mathematics 18 no. 3 (2009), 257-283.

Applied/Interdisciplinary

Topological Data Analysis/Machine Learning

Persistent homology machine learning for fingerprint classification

with Bob Giansiracusa and Chul Moon. Proceedings of the 18th IEEE International Conference on Machine Learning and Applications (IEEE ICMLA 2019), Boca Raton, FL, USA, 2019, 1219-1226.

Persistence terrace for topological inference of point cloud data

with Chul Moon and Nicole Lazar. Journal of Computational and Graphical Statistics 27 no. 3 (2018), 576-586.

Math and Law

Branching on the bench: Quantifying division in the Supreme Court with trees

Constitutional Political Economy (2022), https://doi.org/10.1007/s10602-022-09360-2.

An evolutionary view of the U.S. Supreme Court

Mathematical and Computational Applications 26 no 2 (2021), 1-31.

Computational geometry and the U.S. Supreme Court

with Cameron Ricciardi. Mathematical Social Sciences 98 (2019), 1-9.

Spatial analysis of U.S. Supreme Court 5-to-4 decisions

with Cameron Ricciardi. Preprint on arXiv.

Geometry in the courtroom

with Cameron Ricciardi. American Mathematical Monthly 125 no. 10 (2018), 867-877.

Teaching the quandary of statistical jurisprudence: a review-essay on the book Math on Trial

Journal of Humanistic Mathematics 6 no. 2 (2016), 207-224.

Miscellaneous

Predicting financial crises with tree leaves

with Chase Cicchetti. Submitted.

The mathematics of misinformation

Notices of the American Mathematical Society, 69 no. 10 (2022), 1707-1715.

Predicting friendships and other fun machine learning tasks with graphs

American Mathematical Society Feature Column.

Trust your instincts when opportunity arises

Notices of the American Mathematical Society 68 no. 3 (2021), 372-375.

From Poland to Petersburg: The Banach-Tarski paradox in Bely's modernist novel

with Anastasia Vasilyeva. Annals of Language and Literature 4 no. 3 (2020), 1-8.

Mathematical symbolism in a Russian literary masterpiece

with Anastasia Vasilyeva. The Mathematical Intelligencer 40 no. 3 (2018), 2-11.

When mathematical reasoning gets murky

The Phoenix (op-ed in Swarthmore student newspaper, response to John Fan).

Finding, and sharing, mathematical beauty in the world

Wisaarkhu Special volume 1 topic 2 (2020).

Policy aware geospatial data

with P. Kishor and O. Seneviratne.Accepted in, but not presented at, ACMGIS 2009. arXiv.CS/1304.5755