Qiongxiang Huang

activity

20172020

collaborators

4 papers

math.CO2020

The extremal graphs of order trees and their topological indices

Rui Song, Qiongxiang Huang, Peng Wang

Recently, D. Vuki $c ˇ$ evi $c ˊ$ and J. Sedlar in \cite{Vuki} introduced an order " $⪯$ " on $T_{n}$ , the set of trees on $n$ vertices, such that the topologi…

math.CO2020

Some new bounds for the signless Laplacian energy of a graph

Peng Wang, Qiongxiang Huang

For a simple graph $G$ with $n$ vertices, $m$ edges and signless Laplacian eigenvalues $q_{1} \geq q_{2} \geq \dots \geq q_{n} \geq 0$ , its the signless Laplacian energy $QE (G)$ i…

math.CO2018

The Kirchhoff Index of Enhanced Hypercubes

Ping Xu, Qiongxiang Huang

Let ${e_{1}, \dots, e_{n}}$ be the standard basis of abelian group $Z_{2}^{n}$ , which can be also viewed as a linear space of dimension $n$ over the Galois filed $F_{2}$ , and $ε_{…

math.CO2017

The full chracterazation of the graphs with a L-eigenvalue of multiplicity $n - 3$

Daijun Yin, Qiongxiang Huang

Let $G (n, k)$ be the set of connected graphs of order $n$ with one of the Laplacian eigenvalue having multiplicity $k$ . It is well known that $G (n, n - 1) = {K_{n}}$ .…

The extremal graphs of order trees and their topological indices

Some new bounds for the signless Laplacian energy of a graph

The Kirchhoff Index of Enhanced Hypercubes

The full chracterazation of the graphs with a L-eigenvalue of multiplicity n−3

The full chracterazation of the graphs with a L-eigenvalue of multiplicity $n - 3$