Results 51 to 60 of about 70 (68)

On the maximum atom-bond sum-connectivity index of molecular trees

open access: yesAKCE International Journal of Graphs and Combinatorics
Let G be a graph with V(G) and E(G), as vertex set and edge set, respectively. The atom-bond sum-connectivity (ABS) index is a vertex-based topological index which is defined as [Formula: see text] where [Formula: see text] is the degree of the vertex a.
Zhonglin Cheng   +2 more
doaj   +1 more source

On the vv-degree based first Zagreb index of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics
A topological index is a graph invariant applicable in chemistry. The first Zagreb index is a topological index based on the vertex degrees of molecular graphs. For any graph G, the first Zagreb index [Formula: see text] is equal to the sum of squares of
L. Anusha   +2 more
doaj   +1 more source

On Properties of Distance-Based Entropies on Fullerene Graphs. [PDF]

open access: yesEntropy (Basel), 2019
Ghorbani M   +4 more
europepmc   +1 more source

The F-coindex of some graph operations. [PDF]

open access: yesSpringerplus, 2016
De N, Nayeem SM, Pal A.
europepmc   +1 more source

On tricyclic graphs with maximum atom-bond sum-connectivity index. [PDF]

open access: yesHeliyon
Noureen S   +5 more
europepmc   +1 more source

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