2 citations · 5 across the 8 of their papers we have counts for
7 papers · 1 filter
Regular graphs with a complete bipartite graph as a star complement
Xiaona Fang, Lihua You, Rangwei Wu +1
Let be a graph of order and be an adjacency eigenvalue of with multiplicity . A star complement for in is an induced subgraph of of order $…
The spread of generalized reciprocal distance matrix
Hechao Liu, Yufei Huang
The generalized reciprocal distance matrix was defined as Let $λ_{1}(RD_α(G))\geq λ_{2}(RD_α(G))\geq \cdots \geq λ_{n}(RD…
Sharp bounds on the symmetric division deg index of graphs and line graphs
Hechao Liu, Yufei Huang
For a graph with vertex set and edge set , the symmetric division deg index is defined as $SDD(G)=\sum\limits_{uv\in E_{G}}(\frac{d_{u}}{d_{v}}+\frac{d_{v}}{d_{u…
The Sombor index and coindex of two-trees
Zenan Du, Lihua You, Hechao Liu +1
The Sombor index of a graph , introduced by Ivan Gutman, is defined as the sum of the weights of all edges of , where denotes the deg…
Spectral properties of -Sombor matrices and beyond
Hechao Liu, Lihua You, Yufei Huang +1
Let be a simple graph with vertex set and edge set . The -Sombor matrix of is the square matr…
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…
The general spectral radius and majorization theorem of -cone graphs with given degree sequences
Yufei Huang, Muhuo Liu
The general spectral radius of a graph , denoted by , is the maximal eigenvalue of , where and are the adjacency matrix and…