Results 1 to 10 of about 478,134 (315)

Local Homeostatic Regulation of the Spectral Radius of Echo-State Networks [PDF]

open access: goldFrontiers in Computational Neuroscience, 2021
Recurrent cortical networks provide reservoirs of states that are thought to play a crucial role for sequential information processing in the brain.
Fabian Schubert, Claudius Gros
doaj   +3 more sources

Relating Estrada index with spectral radius [PDF]

open access: diamondJournal of the Serbian Chemical Society, 2007
The Estrada index EE is a recently proposed molecular structure-descriptor, used in the modeling of certain features of the 3D structure of organic molecules, in particular of the degree of folding of proteins and other long-chain biopolymers.
Gutman Ivan   +4 more
doaj   +5 more sources

Some new sharp bounds for the spectral radius of a nonnegative matrix and its application [PDF]

open access: yesJournal of Inequalities and Applications, 2017
In this paper, we give some new sharp upper and lower bounds for the spectral radius of a nonnegative irreducible matrix. Using these bounds, we obtain some new and improved bounds for the signless Laplacian spectral radius of a graph or a digraph.
Jun He   +3 more
doaj   +2 more sources

On the joint spectral radius. II [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1992
In this paper we show that if T = ( T 1 , … , T n ) {\mathbf {T}} = ({T_1}, \ldots ,{T_n}) is a commuting n n -tuple of operators ...
Muneo Chō   +2 more
openalex   +3 more sources

Bounds of the Spectral Radius and the Nordhaus-Gaddum Type of the Graphs [PDF]

open access: yesThe Scientific World Journal, 2013
The Laplacian spectra are the eigenvalues of Laplacian matrix L(G)=D(G)-A(G), where D(G) and A(G) are the diagonal matrix of vertex degrees and the adjacency matrix of a graph G, respectively, and the spectral radius of a graph G is the largest ...
Tianfei Wang, Liping Jia, Feng Sun
doaj   +2 more sources

Spectral Radius and Hamiltonicity of Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2019
In this paper, we study the Hamiltonicity of graphs with large minimum degree. Firstly, we present some conditions for a simple graph to be Hamilton-connected and traceable from every vertex in terms of the spectral radius of the graph or its complement,
Yu Guidong   +3 more
doaj   +4 more sources

Some inequalities on the spectral radius of matrices [PDF]

open access: yesJournal of Inequalities and Applications, 2018
Let A 1 , A 2 , … , A k $A_{1}, A_{2},\ldots, A_{k}$ be nonnegative matrices. In this paper, some upper bounds for the spectral radius ρ ( A 1 ∘ A 2 ∘ ⋯ ∘ A k ) $\rho(A_{1}\circ A_{2}\circ\cdots\circ A_{k})$ are proposed.
Linlin Zhao, Qingbing Liu
doaj   +2 more sources

A note on distance spectral radius of trees

open access: goldSpecial Matrices, 2017
The distance spectral radius of a connected graph is the largest eigenvalue of its distance matrix. We determine the unique non-starlike non-caterpillar tree with maximal distance spectral radius.
Wang Yanna   +3 more
doaj   +2 more sources

Optimal network modification for spectral radius dependent phase transitions

open access: goldNew Journal of Physics, 2016
The dynamics of contact processes on networks is often determined by the spectral radius of the networks adjacency matrices. A decrease of the spectral radius can prevent the outbreak of an epidemic, or impact the synchronization among systems of coupled
Yonatan Rosen   +2 more
doaj   +2 more sources

Connected Hypergraphs with Small Spectral Radius [PDF]

open access: yesLinear Algebra and its Applications, 2014
In 1970 Smith classified all connected graphs with the spectral radius at most $2$. Here the spectral radius of a graph is the largest eigenvalue of its adjacency matrix.
Lu, Linyuan, Man, Shoudong
core   +2 more sources

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