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On the spectral radius and energy of digraphs
Linear and Multilinear Algebra ( IF 0.9 ) Pub Date : 2021-03-18 , DOI: 10.1080/03081087.2021.1899109 Juan R. Carmona 1 , Jonnathan Rodríguez 2
中文翻译:
关于有向图的谱半径和能量
更新日期:2021-03-19
Linear and Multilinear Algebra ( IF 0.9 ) Pub Date : 2021-03-18 , DOI: 10.1080/03081087.2021.1899109 Juan R. Carmona 1 , Jonnathan Rodríguez 2
Affiliation
Let D be a simple digraph with eigenvalues . The energy of D is defined as , where is the real part of the eigenvalue . In this paper, a lower bound for the spectral radius of D will be established based on the number of subgraphs in D, improving some of the lower bounds that appear in the literature. Furthermore, this result allows us to obtain an upper bound for the energy of D.
中文翻译:
关于有向图的谱半径和能量
令D为具有特征值的简单有向图。D的能量定义为, 在哪里 是特征值的真实部分 。在本文中,将根据子图的数量确定D的光谱半径的下限在D中,改善了文献中出现的一些下界。此外,该结果使我们能够获得D的能量的上限。