Graceful labeling of Roman rings having cycle with 6 vertices
G. Sathiamoorthy, T. N. Janakiraman · Applied Mathematical Sciences · 2015
Copyright c © 2014 G. Sathiamoorthy and T. N. Janakiraman. This is an open access article distributed under the Creative Commons Attribution License, which permits unre-stricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Roman rings can be obtained by introducing n copies of cycle C6 with 6 vertices, which are merged respectively to n teeth of comb graph Pn L1. In this paper, it is proved Roman rings with cycle C6 are graceful. Mathematics Subject Classification: 05C78