G-2009-42
An Inequality for the Signless Laplacian Index of a Graph Using the Chromatic Number
Pierre Hansen et Claire Lucas
Let Q = D + A denote the signless Laplacian matrix of a graph G of order n, where D is the diagonal matrix of the degrees and A the adjacency matrix of G. Let q1 denote the index of Q and the chromatic number of G. In this note we prove that
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Paru en août 2009 , 10 pages