Results 1 to 10 of about 477,790 (171)

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

open access: yesFrontiers 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   +2 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

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

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

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

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

Joint and Generalized Spectral Radius of Upper Triangular Matrices with Entries in a Unital Banach Algebra [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
In this paper, we discuss some properties of joint spectral {radius(jsr)} and  generalized spectral radius(gsr)  for a finite set of upper triangular matrices with entries in a Banach algebra and represent relation between geometric and joint/generalized
Hamideh Mohammadzadehkan   +2 more
doaj   +1 more source

Relating Estrada index with spectral radius [PDF]

open access: yesJournal 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   +3 more sources

Optimizing the Spectral Radius [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2013
We suggest a new approach to finding the maximal and the minimal spectral radii of linear operators from a given compact family of operators, which share a common invariant cone (e.g., family of no...
Y. Nesterov, V. Y. Protasov
openaire   +1 more source

A spectral method for retrieving cloud optical thickness and effective radius from surface-based transmittance measurements [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
We introduce a new spectral method for the retrieval of optical thickness and effective radius from cloud transmittance that relies on the spectral slope of the normalized transmittance between 1565 nm and 1634 nm, and on cloud transmittance at a visible
P. J. McBride   +4 more
doaj   +1 more source

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