2 papers
math.CO2021
A bound for the -domination number of a graph in terms of its eigenvalue multiplicities
A. Abiad, S. Akbari, M. H. Fakharan +1
Let be a connected graph of order with domination number . Wang, Yan, Fang, Geng and Tian [Linear Algebra Appl. 607 (2020), 307-318] showed that for any Laplacian eig…
math.CO2019
Trees with a large Laplacian eigenvalue multiplicity
S. Akbari, E. R. van Dam, M. H. Fakharan
In this paper, we study the multiplicity of the Laplacian eigenvalues of trees. It is known that for trees, integer Laplacian eigenvalues larger than are simple and also the mu…