First and Second Zagreb Coindices for Chains of Cycles | ||
AL-Rafidain Journal of Computer Sciences and Mathematics | ||
Volume 17, Issue 1, June 2023, Pages 17-22 PDF (929.88 K) | ||
Document Type: Research Paper | ||
DOI: 10.33899/csmj.2023.179460 | ||
Authors | ||
Ammar Raad Waadallah* 1; Ahmed M. Ali2 | ||
1College of Computer Science and Mathematics University of Mosul Mosul, Iraq | ||
2College of Computer Sciences and Mathematics University of Mosul, Mosul, Iraq | ||
Abstract | ||
Abstract—The graphs which are used in this paper are simple, finite and undirected. The first and second Zagreb indices for every non-adjacent vertices (also called first and second Zagreb coindices) are dependent only on the non-adjacent vertices degrees which interspersed the operations of addition and multiplication, respectively, for the degrees of non-adjacent vertices. The number of the edges incident on vertex v in a graph G is called the degree of a vertex v and the two vertices u and v are non-adjacent if it’s no common edge between them. In this paper, we found the first and second Zagreb coindices of chains of even cycles and also, gave some examples. | ||
Keywords | ||
First Zagreb coindex; Second Zagreb conidex; Identical; Even cycle | ||
Statistics Article View: 116 PDF Download: 107 |