摘要
研究了两类完全多部图的和数,证明了图K1,1,r和K1,1,1,r(r≥3)的和数分别是r和r+2.
The sum numbers of two kinds of graphs are studied, which shows that the sum numbers of K1,1.r and K1,1,1,r are r and r ＋ 2 respectively.
出处
《鲁东大学学报（自然科学版）》
2006年第4期283-284,288,共3页
Journal of Ludong University:Natural Science Edition
关键词
和图
和数
k-部图
sum graph
sum number
k- partite graph
