Planar Graphs Without 5-and 8-Cycles and Adjacent Triangles are 3-Colorable

Sakib A . Mondal1
1Enterprise Analytics Group India Science Lab, General Motors Global R&D, GM Technical Centre India Pvt Ltd, Creator Bldg., ITPL, Whitefield Road, Bangalore – 560 066, INDIA

Abstract

In this paper we prove that every planar graph without \(5\)- and \(8\)-cycles and without adjacent triangles is \(3\)-colorable.