Extremal Tetracyclic and Pentacyclic graphs on Geometric-Arithmetic index

Suresh Elumalai, Toufik Mansour

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Molecular descriptors play a significant role in mathematical chemistry,
and biology especially in the QSPR/QSAR investigations. Among them, a special
place is reserved for so-called topological indices [1]. Nowadays, there exists a legion of topological indices with some applications in chemistry [2]. Topological indices and graph invariants, based on the degrees, are used for characterizing molecular graphs. A topological index is a numerical value associated with chemical constitution purporting for correlation of chemical structure with various physical properties, chemical reactivity or biological activity. We characterize the extremal tetracyclic and pentacyclic graphs on Geometric-Arithmetic index.
Original languageEnglish
Title of host publication19th Haifa Workshop on Interdisciplinary Applications of Graphs, Combinatorics, and Algorithms
StatePublished - 2019


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