几类优美图

Several Types of Graceful Graphs

对任意正整数m和n,完全3部图K1,m,n,K3和K4的n—冠,以及K3的每个顶点分别粘接一条等长路所得图是优美图.

For any normal integer, the graphs made by separately cohering the same path in equal length on the complete 3 - partite graph K1 ,m,n, complete graph, the corona n of K3 and K4 and each vertex of K3 are all graceful graphs.