Title of article :
Co-PI Index of Some Chemical Graphs
Author/Authors :
sharmiladevi, g. bharathiar university - research and development centre, kongu arts and science college - department of mathematics, India , kaladevi, v. bishop heber college - department of mathematics, India
Abstract :
The Co-PI index of a graph G, denoted by Co − P I(G), is defined as Co − P I(G) = P Ʃ uv=e∈E(G)n^Gu (e) − n^G v(e).In this paper, the upper bounds for the Co-PI indices of the unilateral hexagonal chain, unilateral polyomino chain, V -phenylenic nanotubes and nanotori are obtained.
Journal title :
General Mathematics Notes
Journal title :
General Mathematics Notes
