The Gracefulness of Graph ∪from i=1 to n P_mi~3
FU Ming-yan · jOURNAL OF southwest University for Nationalities · 2007
Isn this paper we give another graceful labelling of the graph Pn 3 and prove that the labelling is graceful and alternating .then piont out the labelling of the graph Pn 3 ( where n = 6 k+ 4n = 6k + 5) is wrong in the paper by Yan Qiantai when n is a positive integer number. We shall give their correspondingly correct labelling and prove that the graph Pn 3 is alternating graph.