Matroid Theory · Algebraic Combinatorics

Donggyu Kim

Postdoctoral fellow at Georgia Tech, supervised by Prof. Matt Baker. I graduated from KAIST in Feb 2025 under the guidance of Prof. Sang-il Oum.

Starting in September 2026, I will be joining the Department of Mathematics at Hanyang University as an Assistant Professor.

CV arXiv Google Scholar

Contact

Georgia Institute of Technology

E-mail
donggyu (at) gatech (dot) edu

Address
Skiles 237b, School of Mathematics, Georgia Institute of Technology, 686 Cherry Street, Atlanta, GA 30332-0160 USA

Selected Papers

Recent Work

The Jacobian of a regular orthogonal matroid and torsor structures on spanning quasi-trees of ribbon graphs

with Matthew Baker and Changxin Ding. Adv. Math., September 2026.

We show that the set of spanning quasi-trees of a ribbon graph inherits a group structure from its Jacobian group without a distinguished identity element.

DOI arXiv

Baker-Bowler theory for Lagrangian Grassmannians

Int. Math. Res. Not. IMRN, April 2025.

Introduces antisymmetric matroids, a combinatorial object related to ribbon graphs, symplectic Grassmannians, delta-matroids, and gaussoids.

DOI arXiv

Orthogonal matroids over tracts

with Tong Jin. Forum Math. Sigma, August 2025.

Extends the theory of matroids with coefficients to orthogonal matroids, equivalently even delta-matroids.

DOI arXiv