Peng Wang

collaborators

2 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…