Results 21 to 30 of about 197,057 (337)

Invariant Subspaces: An Alternative for Introducing Eigenvectors and Eigenvalues

open access: yesAnnales de Didactique et de Sciences Cognitives, 2023
The concepts of eigenvalue and eigenvector are typically approached algorithmically in introductory linear algebra courses. However, a more conceptual orientation involves connecting these notions to the concept of one-dimensional invariant subspace ...
Gisela Camacho, Asuman Oktaç
doaj   +1 more source

Dynamic Analysis for Soil - Structure Systems Using Dynamic Stiffness [PDF]

open access: yesEngineering and Technology Journal, 2005
This paper gives exact dynamic stiffness coefficient for beam element with axial force embedded in elastic medium having normal and tangential soil reactions . These moduli of subgrade reactions are assumed to be constants along the length of the element
Mohamad Essa
doaj   +1 more source

Spectral properties for a type of heptadiagonal symmetric matrices

open access: yesAIMS Mathematics, 2023
In this paper we expressed the eigenvalues of a sort of heptadiagonal symmetric matrices as the zeros of explicit rational functions establishing upper and lower bounds for each of them. From the prescribed eigenvalues, we computed eigenvectors for these
João Lita da Silva
doaj   +1 more source

Fast and accurate con-eigenvalue algorithm for optimal rational approximations [PDF]

open access: yes, 2012
The need to compute small con-eigenvalues and the associated con-eigenvectors of positive-definite Cauchy matrices naturally arises when constructing rational approximations with a (near) optimally small $L^{\infty}$ error. Specifically, given a rational
Beylkin, G., Haut, T. S.
core   +1 more source

Some properties on extended eigenvalues and extended eigenvectors

open access: yesTikrit Journal of Pure Science, 2019
In this paper, the study extended eigenvalues and extended eigenvectors, and we will investigate the  and give for some concepts properties and result important, also we will find the  and  on the  space, so U is Unilateral shift operator and .
Laith K. Shaakir, Anas A. Hijab
doaj   +1 more source

On some operator equations in the space of analytic functions and related questions; pp. 81–87 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2013
We investigate extended eigenvalues, extended eigenvectors, and cyclicity problems for some convolution operators. By using the Duhamel product technique, we also estimate the norm of the inner derivation operator ΔA.
Mehmet Gürdal, Filiz Şöhret
doaj   +1 more source

Computation of entanglement entropy in inhomogeneous free fermions chains by algebraic Bethe ansatz

open access: yesSciPost Physics Proceedings, 2023
The computation of the entanglement entropy for inhomogeneous free fermions chains based on $q$-Racah polynomials is considered. The eigenvalues of the truncated correlation matrix are obtained from the diagonalization of the associated Heun operator via
Pierre-Antoine Bernard, Gauvain Carcone, Nicolas Crampé, Luc Vinet
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

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

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