Proper Colourings in r-Regular Zagreb Index Graph Litta E.1,*, Datshini S.2,** 1Associate Professor in Mathematics, PG and Research Department of Mathematics, Cauvery College for Women (Autonomous), Tiruchirappalli - 620018, India 2PG Scholar, PG and Research Department of Mathematics, Cauvery College for Women (Autonomous), Tiruchirappalli - 620018, India *E-mail : litta.felix@gmail.com
**shanksrs994@gmail.com
Online Published on 08 June, 2023. Abstract In this article, the new concept proper colourings in r - regular Zagreb index graph has been introduced. The first and second Zagreb indices are introduced. New inequalities on chromatic number related with first and second Zagreb indices are being established. Top Keywords Regular graph, Proper Colouring, Zagreb index, Chromatic number. Top |