Results 31 to 40 of about 808,768 (351)

Relative Perturbation Theory for Quadratic Eigenvalue Problems [PDF]

open access: yes, 2016
In this paper, we derive new relative perturbation bounds for eigenvectors and eigenvalues for regular quadratic eigenvalue problems of the form $\lambda^2 M x + \lambda C x + K x = 0$, where $M$ and $K$ are nonsingular Hermitian matrices and $C$ is a ...
Benner, Peter   +3 more
core   +3 more sources

Perturbation Methods for the Eigencharacteristics of Symmetric and Asymmetric Systems

open access: yesShock and Vibration, 2018
Dynamic analysis for a vibratory system typically begins with an evaluation of its eigencharacteristics. However, when design changes are introduced, the eigensolutions of the system change and thus must be recomputed.
Philip D. Cha, Austin Shin
doaj   +1 more source

Perturbations of symmetric eigenvalue problems

open access: yesApplied Mathematics Letters, 2002
AbstractBy use of a cut-off technique, we obtain a result of multiple solutions to perturbations of symmetric eigenvalue problems with constraint such as — Δu = λ(f(x, u)+εg(x, u)) in Ω, u|∂Ω = 0, ∫Ω |∇ u|2 dx = r2.
Yongqing Li, Zhaoli Liu
openaire   +2 more sources

The Fréchet Derivative of an Analytic Function of a Bounded Operator with Some Applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
The main result in this paper is the determination of the Fréchet derivative of an analytic function of a bounded operator, tangentially to the space of all bounded operators. Some applied problems from statistics and numerical analysis are included as a
D. S. Gilliam   +3 more
doaj   +1 more source

Principal Eigenvalues and Perturbation

open access: yes, 1995
In a classical article, Hess and Kato [HK] study the problem $$\left\{ {\begin{array}{*{20}{c}} {Au + \lambda mu = 0} \\ {0 \leqslant u \in D\left( A \right), u \ne 0,} \end{array}} \right.$$ (0.1) where A is a strongly elliptic operator on a bounded open set Ω of R n with Dirichlet boundary conditions and m is a continuous bounded function ...
Arendt, W, Batty, C
openaire   +3 more sources

Fragmentation of a dynamically condensing radiative layer [PDF]

open access: yes, 2009
In this paper, the stability of a dynamically condensing radiative gas layer is investigated by linear analysis. Our own time-dependent, self-similar solutions describing a dynamical condensing radiative gas layer are used as an unperturbed state.
Iwasaki, Kazunari, Tsuribe, Toru
core   +1 more source

Comparison between the Variational Iteration Method and the Homotopy Perturbation Method for the Sturm-Liouville Differential Equation

open access: yesBoundary Value Problems, 2010
We applied the variational iteration method and the homotopy perturbation method to solve Sturm-Liouville eigenvalue and boundary value problems. The main advantage of these methods is the flexibility to give approximate and exact solutions to both ...
R. Darzi, A. Neamaty
doaj   +2 more sources

Closed form bound-state perturbation theory

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
The perturbed Schrödinger eigenvalue problem for bound states is cast into integral form using Green's Functions. A systematic algorithm is developed and applied to the resulting equation giving rise to approximate solutions expressed as functions of the
Ollie J. Rose, Carl G. Adler
doaj   +1 more source

On Eigenvalues and Eigenvectors of Perturbed [PDF]

open access: yesITB Journal of Sciences, 2009
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 show that the object dimension of size n â‰¥ 3 can be reduced into a case of size 3, hence simplify
A. D. Garnadi, Pudji Astuti
openaire   +3 more sources

Stochastic finite element analysis of the free vibration of non-uniform beams with uncertain material

open access: yesJournal of Materials and Engineering Structures, 2022
This paper deal with the stochastic finite element method for investigating the eigenvalues of free vibration of non-uniform beams due to a random field of elastic modulus.
Nhung Thi NGUYEN   +3 more
doaj  

Home - About - Disclaimer - Privacy