L. D. de Lima

activity

20122026

most citedOn the second largest eigenvalue of the signless Laplacian

24 citations · 25 across the 5 of their papers we have counts for

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2 papers · 1 filter

math.SP2026

Graph transformations and eigenvectors of the Laplacian, signless Laplacian and Adjacency matrices

Jean-Guy Caputo, Leonardo de Lima, Arnaud Knippel

We study graph transformations and their effects on the eigenvectors of three fundamental graph matrices: the adjacency matrix $A$ , the signless Laplacian $Q$ , and the Laplacian $L…

math.CO2026

Distribution of signless Laplacian eigenvalues and degree sequence

Saieed Akbari, M. Darougheh, L. S. de Lima +1

Let $G$ be a graph of order $n$ with degree sequence $d_{1} \geq \dots \geq d_{n}$ . Let $m_{G} I$ be the number of signless Laplacian eigenvalues in an interval $I$ . In this paper, w…