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math.CO2016
Maximum atom-bond connectivity index with given graph parameters
Xiu-Mei Zhang, Yu Yang, Hua Wang +1
The atom-bond connectivity (ABC) index is a degree-based topological index. It was introduced due to its applications in modeling the properties of certain molecular structures and…
math.CO2014
Eccentricity Sums in Trees
Heather Smith, László Székely, Hua Wang
The eccentricity of a vertex, , was one of the first, distance-based, tree invariants studied. The total eccentricity of a tree, , is the…