On the distance Laplacian spectra of graphs

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Abstract

The distance Laplacian matrix of a connected graph G is defined in [2,3] and it is proved that for a graph G on n vertices, if the complement of G is connected, then the second smallest distance Laplacian eigenvalue is strictly greater than n. In this article, we consider the graphs whose complement is a tree or a unicyclic graph, and characterize the graphs among them having n+1 as the second smallest distance Laplacian eigenvalue. We prove that the largest distance Laplacian eigenvalue of a path is simple and the corresponding eigenvector has the similar property like that of a Fiedler vector. © 2014 Published by Elsevier Inc.

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APA

Nath, M., & Paul, S. (2014). On the distance Laplacian spectra of graphs. Linear Algebra and Its Applications, 460, 97–110. https://doi.org/10.1016/j.laa.2014.07.025

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