O. Rojo

activity

20172019

A_{α} -

eigenvalues of a bug

1 citations · 1 across the 2 of their papers we have counts for

collaborators

Showing math.COShow all

3 papers · 1 filter

math.CO2018

New bounds on the distance Laplacian and distance signless Laplacian spectral radii

Roberto C. Díaz, Ana I. Julio, Oscar Rojo

Let G be a simple undirected connected graph. In this paper, new upper bounds on the distance Laplacian spectral radius of G are obtained. Moreover, new lower and upper bounds for…

math.CO2017

On the $α$ -index of graphs with pendent paths

Vladimir Nikiforov, Oscar Rojo

Let $G$ be a graph with adjacency matrix $A (G)$ and let $D (G)$ be the diagonal matrix of the degrees of $G$ . For every real $α \in [0, 1]$ , write $A_{α} (G)$ fo…

math.CO2017★ 1 cited

Computing the $A_{α} -$ eigenvalues of a bug

Oscar Rojo

Let $G$ be a simple undirected graph. For $α \in [0, 1]$ , let \begin{equation*} A_α\left( G\right) =αD\left( G\right) +(1-α)A\left( G\right) , \end{equation*} where $A (G)$ is the adj…

New bounds on the distance Laplacian and distance signless Laplacian spectral radii

On the α-index of graphs with pendent paths

Computing the Aα​− eigenvalues of a bug

On the $α$ -index of graphs with pendent paths

Computing the $A_{α} -$ eigenvalues of a bug