The trees with the second smallest normalized Laplacian eigenvalue at least 1−32

Xiaoguo Tian, Ligong Wang

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

Let λ2(G) be the second smallest normalized Laplacian eigenvalue of a graph G. In this paper, we determine all trees with λ2(T)≥1−32. Meanwhile, if T is a tree of diameter 6, then we prove that λ2(T)≤1−32. Moreover, we determine all trees of diameter d=3 or 6 with λ2(T)=1−32.

源语言英语
页(从-至)118-133
页数16
期刊Discrete Applied Mathematics
220
DOI
出版状态已出版 - 31 3月 2017

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