For a graph G, we here investigate its signless Laplacian matrix Q(G) and the corresponding Q-eigenvalues. By considering the relation between the Q-spectrum and the circumference of G, we characterize all connected graphs with exactly three Q-eigenvalues at least two.
On graphs with exactly three Q-eigenvalues at least two
BELARDO, FRANCESCO;
2013-01-01
Abstract
For a graph G, we here investigate its signless Laplacian matrix Q(G) and the corresponding Q-eigenvalues. By considering the relation between the Q-spectrum and the circumference of G, we characterize all connected graphs with exactly three Q-eigenvalues at least two.File in questo prodotto:
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