Spectral properties of the eccentricity matrix of graphs
Spectral properties of the eccentricity matrix of graphs
复制标题
图的偏心率矩阵的谱特性
DOI:
10.1016/j.dam.2019.10.015
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发表时间:
2020-05
影响因子:
1.1
通讯作者:
Belardo Francesco
中科院分区:
文献类型:
--
作者:
Wang Jianfeng;Lu Mei;Lu Lu;Belardo Francesco
The eccentricity matrix E (G) of a graph G is derived from the distance matrix by keeping for each row and each column only the largest distances and leaving zeros in the remaining ones. The E-eigenvalues of a graph G are those of its eccentricity matrix E (G). The E-spectrum of G is the multiset of its E-eigenvalues, where the largest one is the E-spectral radius. In this paper, we proceed to study the algebraic properties of the E-spectrum. In particular, we give a condition to connected graphs with cut vertices so that their eccentricity matrices are irreducible. The latter partially answers the problem given in Wang et al.(2018). We determine the lower and upper bounds for the E-spectral radius of graphs, and we identify the corresponding extremal graphs. Finally, we investigate the least E-eigenvalue of graphs, and list the E-eigenvalues of trees with order 8.
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影响因子:
1.7
作者:
Jack H Koolen;Jae Young Yang;Qianqian Yang
通讯作者:
Qianqian Yang
DOI:
10.1007/1-4020-2721-4_1
发表时间:
2011-04
期刊:
--
影响因子:
--
作者:
B. Ya
通讯作者:
B. Ya
影响因子:
1.8
作者:
H. Günthard;H. Primas
通讯作者:
H. Günthard;H. Primas
DOI:
10.1016/j.disc.2019.05.033
发表时间:
2019-09
期刊:
Discret. Math.
影响因子:
--
作者:
Jianfeng Wang;Lu Lu-Lu;M. Randic;Guozheng Li
通讯作者:
Jianfeng Wang;Lu Lu-Lu;M. Randic;Guozheng Li
影响因子:
1.1
作者:
D. Cvetkovic;P. Rowlinson
通讯作者:
D. Cvetkovic;P. Rowlinson