Bounds for the Co-PI Index of a Graph

Kaya, E.; Maden, A. D.

doi:10.22052/ijmc.2015.8923

Bounds for the Co-PI Index of a Graph

Document Type : Research Paper

Authors

E. Kaya ¹

A. D. Maden ²

¹ Igdir University Science and Literature Faculty Department of Mathematics

² Selcuk University Science Faculty Department of Mathematics

10.22052/ijmc.2015.8923

Abstract

In this paper, we present some inequalities for the Co-PI index involving the some topological indices, the number of vertices and edges, and the maximum degree. After that, we give a result for trees. In addition, we give some inequalities for the largest eigenvalue of the Co-PI matrix of G.

Keywords

Co-PI index

Co-PI matrix

Co-PI spectral radius

Subjects