Author:
Guan Mei,Zhai Mingqing,Wu Yongfeng
Abstract
Abstract
For
S
(
T
)
, the sum of the two largest Laplacian eigenvalues of a tree T, an upper bound is obtained. Moreover, among all trees with
n
≥
4
vertices, the unique tree which attains the maximal value of
S
(
T
)
is determined.
MSC:05C50.
Publisher
Springer Science and Business Media LLC
Subject
Applied Mathematics,Discrete Mathematics and Combinatorics,Analysis
Cited by
4 articles.
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