Matroid Theory · Algebraic Combinatorics

Donggyu Kim

I am an Assistant Professor in the Department of Mathematics at Hanyang University.

Previously, I was a 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.

CV arXiv Google Scholar

I'm co-organizing the Combinatorics Seminar at HY.

Contact

Hanyang University

E-mail
donggyu (at) hanyang (dot) ac (dot) kr

Address
Department of Mathematics, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea

Upcoming Talks

Next Appearances

Oct. 13, 2026

Embedded graphs, Eulerian digraphs, and their Jacobian groups

National Yang Ming Chiao Tung University

Oct. 21, 2026

On the enumeration of polymatroids

2026 Combinatorics Workshop

Dec., 2026

Talk title to be announced.

38th KIAS Combinatorics Workshop

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