Withanaarachchi, W.A.K.D.H.; Almeida, S.V.A.; Wijesiri, G.S.
(Faculty of Science, University of Kelaniya Sri Lanka, 2023)
One of the most prominent problems of topological graph theory is to determine the type of surface a nonplanar graph can be embedded. Almost complete results have been obtained for 4-edge connected graphs. The methods that ...