36 citations · 50 across the 13 of their papers we have counts for
6 papers · 1 filter
Extremal problems on Sombor indices of unicyclic graphs with a given diameter
Hechao Liu
Sombor index is a novel topological index, which was introduced by Gutman and defined for a graph as , where $d_{u}=d_…
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…
Extremal cacti with respect to Sombor index
Hechao Liu
Recently, a novel topological index, Sombor index, was introduced by Gutman, defined as , where denotes the degree…
The expected values of Sombor indices in random hexagonal chains, phenylene chains and Sombor indices of some chemical graphs
Xiaona Fang, Lihua You, Hechao Liu
Hexagonal chains are a special class of catacondensed benzenoid system and phenylene chains are a class of polycyclic aromatic compounds. Recently, A family of Sombor indices was i…
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…
On the first three minimum Mostar indices of tree-like phenylenes
Hechao Liu, Lihua You, Hanlin Chen +1
Let be a simple connected graph with its vertex set and edge set . The Mostar index was defined as $Mo(G)=\sum\limits_{e=uv\in E(G)}|n_{u…