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ON THE LOWER BOUND OF MODIFIED SOMBOR INDEX OF GRAPHS WITH MINIMUM DEGREE AT LEAST THREE

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The modified sombor index of a graph is defined as where E(G*) is the set of all edges in G*, and d(x') is the degree of the vertex x' in G*. In this paper, we deduce the lower bound for the modified SO index of a graph with w vertices having minimum degree at least three and identifies the corresponding minimal graph.

Abstract

The modified sombor index of a graph is defined as where E(G*) is the set of all edges in G*, and d(x') is the degree of the vertex x' in G*. In this paper, we deduce the lower bound for the modified SO index of a graph with w vertices having minimum degree at least three and identifies the corresponding minimal graph.

참고문헌 (12)

  1. I. Gutman, "Geometric approach to degree-based topological indices: Sombor indices", MATCH Commun. Math. Comput. Chem, 86, pp.11~16 (2021)
  2. B Horoldagva, "On Sombor index of graphs", MATCH Commun. Math. Comput. Chem., 86, pp.703~713 (2021)
  3. R. Cruz, "Extremal values of the Sombor index in unicyclic and bicyclic graphs", J. Math. Chem., 59, pp.1098~1116 (2021)
  4. K. Das, "Some extremal graphs with respect to Sombor index", Mathematics, 9, pp.1202~ (2021)
  5. F. F. Nezhad, "Sharp bounds on the inverse sum indeg index", Discr. Appl. Math., 217, pp.185~195 (2017)
  6. J. Sedlar, "On the inverse sum indeg index", Discrete Appl. Math, 184, pp.202~212 (2015)
  7. Borovi´canin, B, "Zagreb indices: Bounds and extremal graphs", MATCH Commun. Math. Comput. Chem, 78, pp.17~100 (2017)
  8. A.R. Ashrafi, "Extremal graphs with respect to the Zagreb coindices", MATCH Commun. Math. Comput. Chem, 65, pp.85~92 (2011)
  9. Y. Pan, "Graphs that minimizing symmetric division deg index", MATCH Commun. Math. Comput. Chem, 82(1), pp.43~55 (2019)
  10. V.R.Kulli, "Computation of Sombor Indices of Certain Networks", International Journal of Applied Chemistry, 8, pp.1~5 (2021)
  11. Huang, Yufei, "Bounds of modified Sombor index, spectral radius and energy", AIMS Mathematics, 6(10), pp.11263~ (2021)
  12. Lijo Vincent, "on Lower Bound of the Modified Sombor Index of Graphs without Pendant Vertices", Communicated, ~

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