Results 71 to 80 of about 68,836 (161)

Maximality of the signless Laplacian energy

open access: yesDiscrete Mathematics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lucélia Kowalski Pinheiro   +1 more
openaire   +2 more sources

Universal Adjacency Matrices with Two Eigenvalues [PDF]

open access: yes
AMS Mathematics Subject Classification: 05C50.Adjacency matrix;Universal adjacency matrix;Laplacian matrix;signless Laplacian;Graph spectra;Eigenvalues;Strongly regular ...
Haemers, W.H., Omidi, G.R.
core   +1 more source

A Spectrum-Based Approach to Network Analysis Utilizing Laplacian and Signless Laplacian Spectra to Torus Networks

open access: yesIEEE Access
Exploring the applications of Laplacian and signless Laplacian spectra extends beyond theoretical chemistry, computer science, electrical networks, and complex networks.
Ali Raza   +3 more
semanticscholar   +1 more source

On the Signless Laplacian ABC-Spectral Properties of a Graph

open access: yesMathematics
In the paper, we introduce the signless Laplacian ABC-matrix Q̃(G)=D¯(G)+Ã(G), where D¯(G) is the diagonal matrix of ABC-degrees and Ã(G) is the ABC-matrix of G. The eigenvalues of the matrix Q̃(G) are the signless Laplacian ABC-eigenvalues of G. We give
B. Rather, H. A. Ganie, Y. Shang
semanticscholar   +1 more source

Signless Laplacian spectral radius and Hamiltonicity

open access: yesLinear Algebra and its Applications, 2010
For an \(n\) vertex of a graph \(G\), the matrix \(L^*(G)=D(G)+A(G)\) is the signless Laplacian matrix of \(G\), where \(D(G)\) is the diagonal matrix of vertex degrees and \(A(G)\) is the adjacency matrix of \(G\). Let \(\gamma(G)\) be the largest eigenvalue of \(L^*(G)\).
openaire   +1 more source

H$^+$-Eigenvalues of Laplacian and Signless Laplacian Tensors

open access: yes, 2013
We propose a simple and natural definition for the Laplacian and the signless Laplacian tensors of a uniform hypergraph. We study their H$^+$-eigenvalues, i.e., H-eigenvalues with nonnegative H-eigenvectors, and H$^{++}$-eigenvalues, i.e., H-eigenvalues with positive H-eigenvectors.
openaire   +2 more sources

On the signless Laplacian spectra of k-trees

open access: yesLinear Algebra and its Applications, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, Minjie, Li, Shuchao
openaire   +2 more sources

Some graphs determined by their (signless) Laplacian spectra [PDF]

open access: yesCzechoslovak Mathematical Journal, 2012
Let \(A(G)\) be the adjacency matrix of a graph \(G\) and let \(D(G)\) be the diagonal matrix whose entries are the degrees of the vertices of \(G\) in the order corresponding to the matrix \(A\). Then \(L(G) = D(G) - A(G)\) is called the Laplacian of \(G\) and \(Q(G) = D(G) + A(G)\) is the signless Laplacian of \(G\).
openaire   +2 more sources

Some sufficient conditions on hamilton graphs with toughness. [PDF]

open access: yesFront Comput Neurosci, 2022
Cai G, Yu T, Xu H, Yu G.
europepmc   +1 more source

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