3 papers
math.CO2025
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…
math.CO2025
Spectral properties of the deformed Laplacian matrix of trees and H-join graphs
Roberto C. Díaz, 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…
math.CO2024
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…