The Colin de Verdière parameter, excluded minors, and the spectral radius
The Colin de Verdière parameter, excluded minors, and the spectral radius
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DOI:
10.1016/j.jcta.2019.02.018
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发表时间:
2017-03
期刊:
影响因子:
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通讯作者:
Michael Tait
中科院分区:
文献类型:
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作者:
Michael Tait
In this paper we characterize graphs which maximize the spectral radius of their adjacency matrix over all graphs of Colin de Verdière parameter at most m. We also characterize graphs of maximum spectral radius with no H as a minor when H is either K r or K s, t. Interestingly, the extremal graphs match those which maximize the number of edges over all graphs with no H as a minor when r and s are small, but not when they are larger.