A study on structure graceful index

Rose Treesa Sebastian, Timmy Tomy Thalavayalil

Today, graph theory is one of the most flourishing branches of Mathematics and has applications to a wide variety of subjects. .Also, graceful labelling plays a vital role. But the complete graph Knis not graceful for n>4. This paper is a brief study on graceful labelling of graph and structure graceful index of graph. This paper investigates about the graceful labelling of graphs and trees.