Nguyen Gia Hien

collaborators

2 papers

math.CV2025

The classification of CR maps from hyperquadrics into tubes over null cones of symmetric forms

Nguyen Gia Hien, Michael Reiter, Duong Ngoc Son

We classify CR maps from the hyperquadric of signature $l > 0$ in $C^{n}$ , $n \geq 3$ , to the local model for the tube over the null cone of a symmetric form in $\mathbb{C}^{n+…

math.CO2025

Spanning trees of claw-free graphs with few leaves and branch vertices

Pham Hoang Ha, Nguyen Gia Hien

Let $T$ be a tree. A vertex of degree one is a \emph{leaf} of $T$ and a vertex of degree at least three is a \emph{branch vertex} of $T$ . A graph is said to be claw-free if it does…