The extreme eigenvalues and maximum degree of k-connected irregular graphs
The extreme eigenvalues and maximum degree of k-connected irregular graphs
复制标题
k连通不规则图的极值特征值和最大度
DOI:
10.1016/j.laa.2014.08.020
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发表时间:
2014-12
影响因子:
1.1
通讯作者:
Yaoing Hou
中科院分区:
文献类型:
--
作者:
Xiaodan Chen;Yaoing Hou
Let λ 1 (G) be the largest eigenvalue and λ n (G) be the smallest eigenvalue of a k-connected irregular graph G with n vertices, m edges and maximum degree Δ. In this paper, we prove that Δ− λ 1 (G)>(n Δ− 2 m) k 2 (n Δ− 2 m)[n 2− 2 (n− k)]+ n k 2. This inequality improves previous results of several authors and implies two lower bounds on Δ+ λ n (G) which also refine some known bounds. Another lower bound on Δ− λ 1 (G) for a connected irregular graph G is given as well.
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影响因子:
0.7
作者:
Bolian Liu;Liu Mu-huo;Zhifu You
通讯作者:
Bolian Liu;Liu Mu-huo;Zhifu You
DOI:
10.1016/j.jctb.2003.12.002
发表时间:
2004-05
期刊:
J. Comb. Theory B
影响因子:
--
作者:
D. Stevanović
通讯作者:
D. Stevanović
DOI:
10.1017/cbo9780511801518
发表时间:
2009-10
期刊:
--
影响因子:
--
作者:
D. Cvetkovic;P. Rowlinson;S. Simic
通讯作者:
D. Cvetkovic;P. Rowlinson;S. Simic
影响因子:
0.7
作者:
Bolian Liu;Yufei Huang;Zhifu You
通讯作者:
Bolian Liu;Yufei Huang;Zhifu You
影响因子:
1.6
作者:
Trevisan, Luca
通讯作者:
Trevisan, Luca