1PG Department of Mathematics, Mahatma Gandhi College, Iritty, 670703. Kerala, India
2PG and Research Department of Mathematics, Mary Matha Arts and Science College, Mananthavady
Online published on 7 May, 2019.
A (p,q) graph is said to admit vertex triangular labeling if its vertices can be labeled by the first p triangular numbers such that the edge labels obtained by adding the labels of its end vertices are distinct. A graph which admits a vertex triangular labeling is called a vertex triangular graph. In this paper we discuss some properties of vertex triangular labeling and we give some classes of graphs which are vertex triangular.
Triangular Number, Vertex Triangular graph
