Line star sets for Laplacian eigenvalues
Line star sets for Laplacian eigenvalues
复制标题
拉普拉斯特征值的线星集
DOI:
10.1016/j.laa.2013.11.005
复制
发表时间:
2014
影响因子:
1.1
通讯作者:
Bu Changjiang
中科院分区:
文献类型:
--
作者:
Zhou Jiang;Sun Lizhu;Wang Wenzhe;Bu Changjiang
Let G be a mixed graph with a nonzero Laplacian eigenvalue μ of multiplicity k. A line star set for μ in G is a set Y of k edges of G such that μ is not a Laplacian eigenvalue of G− Y. It is shown that line star set exists for any nonzero Laplacian eigenvalue of any mixed graph. Some basic properties for line star sets are given. We also obtain some results on line star sets in undirected graphs.
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