摘要
研究了只有三个圈的双色有向图,并给出了这类双色有向图是本原的充分必要条件。
In this paper ,we discuss two-colored directed graphs with only three cycles and show necessary and sufficient conditions for these graphs to be primitive.
出处
《太原科技大学学报》
2007年第5期415-416,共2页
Journal of Taiyuan University of Science and Technology
基金
国家自然科学基金(10471081)
关键词
双色有向图
有向图
本原矩阵
Two-colored digraphs, directed graphs, primitive matrices