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Computing FGZ Index of Sum Graphs under Strong Product

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  • Zhi-Ba Peng
  • Saira Javed
  • Muhammad Javaid
  • Jia-Bao Liu
  • Ahmet Sinan Cevik

Abstract

Topological index (TI) is a function that assigns a numeric value to a (molecular) graph that predicts its various physical and structural properties. In this paper, we study the sum graphs (S-sum, R-sum, Q-sum and T-sum) using the subdivision related operations and strong product of graphs which create hexagonal chains isomorphic to many chemical compounds. Mainly, the exact values of first general Zagreb index (FGZI) for four sum graphs are obtained. At the end, FGZI of the two particular families of sum graphs are also computed as applications of the main results. Moreover, the dominating role of the FGZI among these sum graphs is also shown using the numerical values and their graphical presentations.

Suggested Citation

  • Zhi-Ba Peng & Saira Javed & Muhammad Javaid & Jia-Bao Liu & Ahmet Sinan Cevik, 2021. "Computing FGZ Index of Sum Graphs under Strong Product," Journal of Mathematics, Hindawi, vol. 2021, pages 1-16, March.
    • Handle: RePEc:hin:jjmath:6654228
    DOI: 10.1155/2021/6654228
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