Extremal problems on the general Sombor index of a graph Articles uri icon

publication date

  • January 2022

start page

  • 8330

end page

  • 8343

issue

  • 5

volume

  • 7

International Standard Serial Number (ISSN)

  • 2473-6988

abstract

  • In this work we obtain new lower and upper optimal bounds of general Sombor indices. Specifically, we get inequalities for these indices relating them with other indices: the first Zagreb index, the forgotten index and the first variable Zagreb index. Finally, we solve some extremal problems for general Sombor indices.

subjects

  • Mathematics

keywords

  • degree-based topological indices; inequalities; sombor indices; variable indices