Open AccessSome basic properties of Sombor indices
Author(s) -
Ivan Gutman
Publication year - 2021
Publication title -
open journal of discrete applied mathematics
Language(s) - English
Resource type - Journals
eISSN - 2617-9687
pISSN - 2617-9679
DOI - 10.30538/psrp-odam2021.0047
Subject(s) - vertex (graph theory) , simple (philosophy) , degree (music) , mathematics , index (typography) , class (philosophy) , combinatorics , computer science , artificial intelligence , graph , physics , philosophy , epistemology , world wide web , acoustics
The recently introduced class of vertex-degree-based molecular structure descriptors, called Sombor indices (\(SO\)), are examined and a few of their basic properties established. Simple lower and upper bounds for \(SO\) are determined. It is shown that any vertex-degree-based descriptor can be viewed as a special case of a Sombor-type index.