Results 11 to 20 of about 17,115 (153)

WEIGHTED LAPLACIANS OF GRIDS AND THEIR APPLICATION FOR INSPECTION OF SPECTRAL GRAPH CLUSTERING METHODS

open access: yesTASK Quarterly, 2021
This paper investigates the relationship between various types of spectral clustering methods and their kinship to relaxed versions of graph cut methods.
MIECZYSŁAW KŁOPOTEK   +2 more
doaj   +1 more source

Design of Damping and Control Matrices by Modification of Eigenvalues and Eigenvectors

open access: yesShock and Vibration, 1994
Direct methods are presented, in state space, for design of control matrices for structures with and without initial viscous damping. given the desired changes in the eigenvalues and eigenvectors.
Vernon H. Neubert
doaj   +1 more source

A note on the eigensystem of the covariance matrix of dichotomous Guttman items

open access: yesFrontiers in Psychology, 2015
We consider the sample covariance matrix for dichotomous Guttman items under a set of uniformity conditions, and obtain closed-form expressions for the eigenvalues and eigenvectors of the matrix.
Clintin P Davis-Stober   +2 more
doaj   +1 more source

Simple eigenvectors of unbounded operators of the type “normal plus compact” [PDF]

open access: yesOpuscula Mathematica, 2015
The paper deals with operators of the form \(A=S+B\), where \(B\) is a compact operator in a Hilbert space \(H\) and \(S\) is an unbounded normal one in \(H\), having a compact resolvent.
Michael Gil'
doaj   +1 more source

Exceptional Points in a Non-Markovian Anti-Parity-Time Symmetric System

open access: yesPhotonics, 2023
By studying the eigenvalues and eigenvectors of a non-Markovian anti parity-time (APT) symmetric system, we investigate the possibility of exceptional points (EPs) that may arise within it.
Andrew Wilkey   +2 more
doaj   +1 more source

On Differentiating Eigenvalues and Eigenvectors [PDF]

open access: yesEconometric Theory, 1985
Let X0 be a square matrix (complex or otherwise) and u0 a (normalized) eigenvector associated with an eigenvalue λo of X0, so that the triple (X0, u0, λ0) satisfies the equations Xu = λu, . We investigate the conditions under which unique differentiable functions λ(X) and u(X) exist in a neighborhood of X0 satisfying λ(X0) = λO, u(X0) = u0, Xu = λu ...
openaire   +4 more sources

A teaching proposal for the study of Eigenvectors and Eigenvalues

open access: yesJournal of Technology and Science Education, 2017
In this work, we present a teaching proposal which emphasizes on visualization and physical applications in the study of eigenvectors and eigenvalues.
María José Beltrán Meneu   +2 more
doaj   +1 more source

On Eigenvalues and Eigenvectors of Perturbed Pairwise Comparison Matrices

open access: yesJournal of Mathematical and Fundamental Sciences, 2013
This work studied eigenvalues and eigenvectors of a class of perturbed pairwise comparison matrices (PCMs). This type of matrices arises from Analytical Hierarchical Process with inconsistency comparison. By employing some nice structures of the PCMs, we
Pudji Astuti, Agah D. Garnadi
doaj   +1 more source

Topology optimization of eigenvalues for elastic structures by topological derivatives and time domain response

open access: yesMechanical Engineering Journal
This paper derives the topological derivative of structural eigenvalues based on the partial differential equations of time-harmonic elastodynamics and their weak form, with the goal of achieving topology optimization of structural eigenvalues.
Hao REN   +3 more
doaj   +1 more source

Mixed-Field Source Localization Based on the Non-Hermitian Matrix

open access: yesInformation, 2020
In this paper, an efficient high-order multiple signal classification (MUSIC)-like method is proposed for mixed-field source localization. Firstly, a non-Hermitian matrix is designed based on a high-order cumulant.
Minggang Mo, Zhaowei Sun
doaj   +1 more source

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