Chia-Yu Chang

About me

I am  a postdoc in the Institut de Mathématiques de Toulouse working with Fulvio Gesmundo. Before that, I was a PhD student in Texas A&M University working with JM Landsberg. I am interested in  problems arising in complexity theory of matrix multiplication. My research investigates the geometry of tensors, with a focus on studying the rank, border rank, subrank, and border subrank of tensors. The methods I use include representation theory and invariant theory.  This is my CV. 

Publications

• B. Biaggi, C.-Y. Chang, J. Draisma, and F. Rupniewski, “Border subrank via a generalised Hilbert-Mumford criterion”,  Advances in Mathematics, vol. 461, p. 110077, 2025, ISSN: 0001-8708. https://doi.org/10.1016/j.aim.2024.110077

• C.-Y. Chang, “Maximal border subrank tensors”, Linear and Multilinear Algebra, pp. 1–11, 2024. https://doi.org/10.1080/03081087.2024.2352456