Yufei Huang

activity

20192022

collaborators

4 papers

math.CO2022

Regular graphs with a complete bipartite graph as a star complement

Xiaona Fang, Lihua You, Rangwei Wu +1

Let $G$ be a graph of order $n$ and $μ$ be an adjacency eigenvalue of $G$ with multiplicity $k \geq 1$ . A star complement $H$ for $μ$ in $G$ is an induced subgraph of $G$ of order $…

math.CO2022

The Sombor index and coindex of two-trees

Zenan Du, Lihua You, Hechao Liu +1

The Sombor index of a graph $G$ , introduced by Ivan Gutman, is defined as the sum of the weights $d_{G} (u)^{2} + d_{G} (v)^{2}$ of all edges $uv$ of $G$ , where $d_{G} (u)$ denotes the deg…

math.CO2021

Ordering chemical graphs by Sombor indices and its applications

Hechao Liu, Lihua You, Yufei Huang

Topological indices are a class of numerical invariants that predict certain physical and chemical properties of molecules. Recently, two novel topological indices, named as Sombor…

math.CO2019

The general spectral radius and majorization theorem of $t$ -cone graphs with given degree sequences

Yufei Huang, Muhuo Liu

The general spectral radius of a graph $G$ , denoted by $Θ (G, α)$ , is the maximal eigenvalue of $M_{α} (G) = A (G) + α D (G)$ $(α \geq 0)$ , where $A (G)$ and $D (G)$ are the adjacency matrix and…

Regular graphs with a complete bipartite graph as a star complement

The Sombor index and coindex of two-trees

Ordering chemical graphs by Sombor indices and its applications

The general spectral radius and majorization theorem of t-cone graphs with given degree sequences

The general spectral radius and majorization theorem of $t$ -cone graphs with given degree sequences