I am an Allen Ziebur Visiting Assistant Professor (postdoctoral researcher) at Binghamton University. My research lies in arithmetic geometry, with a particular focus on the study of wildly ramified Galois covers of curves. I am especially interested in questions concerning families and moduli of such covers, using tools from higher ramification theory, higher class field theory, and non-archimedean geometry.

I earned my PhD in May 2020 from the University of Virginia under the supervision of Andrew Obus. Prior to my current position, I held postdoctoral appointments at the National Center for Theoretical Sciences (Taipei), the Vietnam Institute for Advanced Study in Mathematics, and the Institute of Mathematics at the Vietnam Academy of Science and Technology.

My recent work includes results on the deformation and moduli of cyclic covers in positive characteristic, as well as developments in Kummer–Artin–Schreier–Witt theory. For a more detailed description of my research, please see the research page.

Selected Works:

• Deforming cyclic covers in towers. Algebr. Geom., to appear, March 2026. (pdf)(arxiv).

• Kummer-Artin-Schreier-Witt theory (with Nguyen-Dang Khai-Hoan), 2024. Submitted. (pdf)(arxiv).

• The moduli space of cyclic covers in positive characteristic (with Matthias Hippold). Int. Math. Res. Not. IMRN, Volume 2024, Issue 13, July 2024, Pages 10169–10188. (pdf)(arxiv)(journal).

Before transitioning to mathematics in 2012, I worked for a year as a mechanical engineer, specializing in designing injection molds for plastic components and developing humanoid robot leg mechanisms. I received my Bachelor's degree in Mechanical Engineering from Ho Chi Minh City University of Technology in 2010.

Here are my CV, research statement, and a brief summary of my teaching experience.

Email:    hdang2 (at) binghamton (dot) edu 

Office:  202 Whitney Hall, Binghamton University
        4400 Vestal Pkwy E, Binghamton, NY 13902