图PnΥSm的优美标号
Graceful Labeling of Graphs PnΥSm

图G的标号是指G的顶点集到一个整数集的映射g，且对e=uv∈E(G)由g(u)和g(v)诱导出边e的标号。本文给出了图P_nE^¨S_m的优美性。即证明了图P_nE^¨S_m是优美图。进而推广了原有的一些结果。
The labeling of a graph G is injection g of the labels of vertices to a set of integers, and the labels of each edge e = uv are induced by the g(u) and g(v). In the paper, we obtain the graceful labeling for graphs？P_nE^¨S_m , which proves its gracefulness, and then extend the original results.