Mingxuan Yang

collaborators

2 papers

math.RA2025

Positive semidefiniteness of $h$ -Shuhan matrices (analogs of Borcherds Cartan matrices) and associated determinant sequences

Weicai Wu, Mingxuan Yang

We introduce an $h$ -Shuhan matrix as a real square matrix $H = (h_{ij})$ with a common diagonal entry $h \geq 0$ , nonpositive integral off-diagonal entries, and the following Cartan-typ…

math.GR2024

Square commutative groups

Weicai Wu, Mingxuan Yang, Yangbo Zhou +1

In this paper we first give a necessary and sufficient condition for a group $G$ generated by $n$ elements to be a square commutative group and prove $G$ is a square commutative gr…

Positive semidefiniteness of h-Shuhan matrices (analogs of Borcherds Cartan matrices) and associated determinant sequences

Square commutative groups

Positive semidefiniteness of $h$ -Shuhan matrices (analogs of Borcherds Cartan matrices) and associated determinant sequences