4 papers
Distribution of deformed Laplacian limit points
Elismar R. Oliveira, Jonas Szutkoski, VIlmar Trevisan
This paper investigates limit points of the deformed Laplacian matrix, which merges the Laplacian and signless Laplacian matrices of a graph through a quadractic one-parameter fami…
Spectral properties of the deformed Laplacian matrix of trees and H-join graphs
Roberto C. DÃaz, Elismar R. Oliveira, Vilmar Trevisan
This paper investigates spectral properties of the deformed Laplacian matrix, which merges the Laplacian and signless Laplacian matrices of a graph through a one-parameter family o…
Limit points of (signless) Laplacian spectral radii of linear trees
Francesco Belardo, Elismar R. Oliveira, Vilmar Trevisan
We study limit points of the spectral radii of Laplacian matrices of graphs. We adapted the method used by J. B. Shearer in 1989, devised to prove the density of adjacency limit po…
Limit points of -matrices of graphs
Elismar R. Oliveira, Vilmar Trevisan
We study limit points of the spectral radii of -matrices of graphs. Adapting a method used by J. B. Shearer in 1989, we prove a density property of -limit points of cat…