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中北大学理学院
Published:2009
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杨鹏, 高玉斌. 一类双圈双色有向图的本原指数[J]. 2009, (5).
DOI:
杨鹏, 高玉斌. 一类双圈双色有向图的本原指数[J]. 2009, (5). DOI:
研究了一类特殊双圈双色有向图
其基础有向图包含一个(m+t)-圈和(m+t+1)-圈.应用组合矩阵论和图论的方法得到这类图本原的条件和指数的界.最后得到本原指数集并对达到指数上下界的极图进行了刻划.
A special two-colored digraph with two cycles
whose uncolored digraph consists of one(m+t)-cycle and one(m+t+1)-cycle
is studied.By using the method of combinatorial matrix theory and graph theory
the primitivity conditions and the bound of the exponent are given.Further
the exponent set is obtained and the extremal digraphs that meet the upper bound and the lower bound are characterized.
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