Group{1,−1,i,−i}Cordial labeling in certain classes of duplicate graphs
P. Vijayakumar, R. Jegan, K. Thirusangu · AIP conference proceedings · 2020
In this paper, we present algorithms and prove the existence of Group{1, -1, i, -i} Cordial Labeling in the extended duplicate graphs of path, comb, twig, circular twig, star, bistar, double star and the duplicate graph of ladder graph.