Profile picture of Changxin Ding

Changxin Ding

Visiting Assistant Professor at Georgia Tech

Email: cding66@gatech.edu

About Me

I am a postdoc at Georgia Tech through July 2026, working with Matt Baker. Previously, I earned my Ph.D. from Brandeis University under the supervision of Olivier Bernardi. I am currently on the academic job market.

I am interested in the interplay of combinatorics, geometry, and algebra. My recent work focuses on

My CV.

Papers

  1. Pseudo-orientable ribbon graphs: Matrix--Quasi-tree Theorem and log-concavity
    with Donggyu Kim
    preprint available on arxiv, 2026.
  2. Grassmann-Plücker functions for orthogonal matroids
    with Donggyu Kim
    preprint available on arxiv, 2026.
  3. The Jacobian of a sixth-root-of-unity matroid
    with Matt Baker and Xu Zhuang
    Annals of Combinatorics, 2026.
  4. The Jacobian of a regular orthogonal matroid and torsor structures on spanning quasi-trees of ribbon graphs
    with Matt Baker and Donggyu Kim
    Advances in Mathematics, 2026.
  5. A consistent sandpile torsor algorithm for regular matroids
    with Alex McDonough, Lilla Tóthmérész, and Chi Ho Yuen
    European Journal of Combinatorics, 2025.
  6. Csikvári's poset and Tutte polynomial
    Discrete Mathematics, 2025.
  7. A framework unifying some bijections for graphs and its connection to Lawrence polytopes
    Combinatorial Theory, 2025.
  8. Geometric bijections between spanning subgraphs and orientations of a graph
    Journal of the London Mathematical Society, 2023.
  9. The rotor-routing torsor and the Bernardi torsor disagree for every non-planar ribbon graph
    Electronic Journal of Combinatorics, 2021.
  10. The equality cases for the inequalities of Oppenheim and Schur for positive semi-definite matrices
    with Xiaodong Zhang
    Czechoslovak Mathematical Journal, 2009.