On the largest eigenvalue of non-regular graphs
On the largest eigenvalue of non-regular graphs
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DOI:
10.1016/j.jctb.2007.02.008
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发表时间:
2007-11
期刊:
影响因子:
--
通讯作者:
Bolian Liu;Jian Shen;Xinmao Wang
中科院分区:
文献类型:
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作者:
Bolian Liu;Jian Shen;Xinmao Wang
We study the spectral radius of connected non-regular graphs. Let λ1(n,Δ) be the maximum spectral radius among all connected non-regular graphs with n vertices and maximum degree Δ. We prove that Δ−λ1(n,Δ)=Θ(Δ/n2). This improves two recent results by Stevanović and Zhang, respectively.