publication . Article . 2020

On the coneighbor eigenvalues and coneighbor energy of a graph

Nechirvan Badal Ibrahim;
Open Access English
  • Published: 01 Dec 2020 Journal: General Letters in Mathematics, volume 9, issue 2, pages 67-73 (issn: 2519-9269, eissn: 2519-9277, Copyright policy)
  • Publisher: Refaad
Abstract
In this paper, we define a new concept in theory of graph energy called coneighbor energy of a graph G, denoted by CE(G), as the sum of the absolute value of eigenvalues of its coneighbor matrix. We are going to derive some results about the coneighbor energy of graphs and coneighboracation graph that possess some coneighbor vertices.
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Subjects
free text keywords: spectrum (of graph), energy (of graph), coneighbor spectrum, coneighbor energy, lcsh:Mathematics, lcsh:QA1-939
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