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math.CO2015
New Bounds for the Sum of Powers of Normalized Laplacian Eigenvalues of Graphs
Gian Paolo Clemente, Alessandra Cornaro
For a simple and connected graph, a new graph invariant , defined as the sum of powers of the eigenvalues of the normalized Laplacian matrix, has been introduced by Boz…
math.CO2015
Novel Bounds for the Normalized Laplacian Estrada and Normalized Energy Index of Graphs
Gian Paolo Clemente, Alessandra Cornaro
For a simple and connected graph, several lower and upper bounds of graph invariants expressed in terms of the eigenvalues of the normalized Laplacian matrix have been proposed in…