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一类n阶本原图的广义Competition指数

Generalized competition indexes of a class of primitive digraphs of order n
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摘要 根据图论、数论的相关知识,对本原图中每一点经过k长途径所到达点的集合进行分析,再结合广义Competition指数的定义,确定了一类n阶本原图的广义Competition指数.当m≤s+1且s+m为奇数时,km(D)=1+((s+m-1)/2)s,当m≤s且s+m为偶数时,km(D)=1+((s+m-1)/2)(s+1);当m≥s+2时,km(D)=1+s2. Based on the related knowledge of graph theory and number theory, the set formed by the vertexes was analyzed, which arrived by every vertex passing a walk of length k in a primitive digraph. Then combined with the definition of generalized competition index, the generalized competition indexes of a class of primitive digraphs of ordern was determined.If m≤s+1 and s+m is odd,km(D)=1+〔s+m-1/2〕s;if m≤s and s+m in even,km(D)=1+〔s+m-2/2〕(s+1);if m≥s+2时,km(D)=1+s2.
机构地区 中北大学数学系
出处 《湖南文理学院学报(自然科学版)》 CAS 2014年第1期4-6,15,共4页 Journal of Hunan University of Arts and Science(Science and Technology)
基金 国家自然科学基金资助项目(11071227) 山西省回国留学人员科研资助项目(2012-070)
关键词 本原图 途径 广义competition指数 primitive digraph walk generalized competition index
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参考文献5

  • 1Brualdi R A, Ryser H J. Combinatorial Matrix Theory [M]. Cambridge: Cambridge University Press, 1991.
  • 2Akelbek M, Kirkland S. Coefficients of ergodicity and the scrambling index [J]. Linear Algebra and its Applications, 2009, 430: 1111-1130.
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  • 4Kim H K. Generalized competition index of a primitive digraph [J]. Linear Algebra and its Applications, 2010, 433: 72- 79.
  • 5Kim H K, Pank S G. A bound of generalized competition index of a primitive digraph [J]. Linear Algebra and its Applications, 2012, 436: 86-98.

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