摘要
指出了一类边裂图SEP(K1,n,f)与图K1,n的边优美性的差异.得到了对任意自然数m>0,SPE(K1,4m+1,f)不是边优美的,以及SEP(K1,n,f)是边优美图的充要条件.
The differences of the edge-gracefulness between SEP(K1,n, f) and Kl.n are pointed out. We obtain the SPE(K1,4m+1, f) is not edge-graceful for any integer m 〉 0, then give the necessary and sufficient condition for SEP(K1,n, f) to be edge-graceful.
出处
《数学的实践与认识》
CSCD
北大核心
2009年第19期197-202,共6页
Mathematics in Practice and Theory
基金
山西省自然科学基金(2008011010)
苏州科技学院重点学科基金
关键词
边裂图
重集
边优美图
充要条件
edge-splitting extension graph
multiset
edge-graceful graph
necessary and sufficient condition