On the distance spectral radius of digraphs with given diameter

被引:4
作者
Xi, Weige [1 ,3 ]
So, Wasin [2 ]
Wang, Ligong [1 ,3 ]
机构
[1] Northwestern Polytech Univ, Dept Appl Math, Sch Sci, Xian 710072, Shaanxi, Peoples R China
[2] San Jose State Univ, Dept Math & Stat, San Jose, CA 95192 USA
[3] Northwestern Polytech Univ, Xian Budapest Joint Res Ctr Combinator, Xian 710129, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Strongly connected; distance spectral radius; diameter; SIGNLESS LAPLACIAN; GRAPHS; MATRIX;
D O I
10.1080/03081087.2019.1682496
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
The distance spectral radius of a strongly connected digraph G is the eigenvalue of its distance matrix with the largest modulus. Let denote the set of strongly connected digraphs with order n and diameter d. In this paper, we completely determine the strongly connected digraphs minimizing among all strongly connected digraphs with order n and diameter d, for d = 1, 2, 3, 4, 5, 6, 7, n-1. We also propose a conjecture about the minimum distance spectral radius among all strongly connected digraphs with given diameter .
引用
收藏
页码:2547 / 2557
页数:11
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