2 citations · 2 across the 5 of their papers we have counts for
9 papers · 1 filter
The Turán number of path-star forests
Xiaona Fang, Yaojun Chen, Lihua You
The Turán number of a graph , denoted by , is the maximum number of edges in any graph on vertices containing no as a subgraph. A linear (star) forest is a fore…
Extremal Kirchhoff index in polycyclic chains
Hechao Liu, Lihua You
The Kirchhoff index of graphs, introduced by Klein and Randić in 1993, has been known useful in the study of computer science, complex network and quantum chemistry. The Kirchhoff…
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 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…
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…