Results 21 to 30 of about 173,375 (235)

Three spectra inverse Sturm–Liouville problems with overlapping eigenvalues

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
In the paper we show that the Dirichlet spectra of three Sturm–Liouville differential operators defined on the intervals $[0,1]$, $[0,a]$ and $[a,1]$ for some $a\in (0,1)$ fixed, together with the knowledge of the normalizing constants corresponding to ...
Shouzhong Fu, Zhong Wang, Guangsheng Wei
doaj   +1 more source

Inverse spectral problem of a class of fourth-order eigenparameter-dependent boundary value problems

open access: yesAdvances in Difference Equations, 2020
This paper deals with a class of inverse spectral problems of fourth-order boundary value problems with eigenparameter-dependent boundary conditions.
Ji-jun Ao, Liang Zhang
doaj   +1 more source

A structured approach to design-for-frequency problems using the Cayley-Hamilton theorem [PDF]

open access: yes, 2014
An inverse eigenvalue problem approach to system design is considered. The Cayley-Hamilton theorem is developed for the general case involving the generalized eigenvalue vibration problem.
Natalie Baddour, Patrick Dumond
core   +1 more source

On Parameterised Quadratic Inverse Eigenvalue Problem

open access: yesEast Asian Journal on Applied Mathematics, 2021
It is shown that if prescribed eigenvalues are distinct, then the parameterised quadratic inverse eigenvalue problem is equivalent to a multiparameter eigenvalue problem. Moreover, a sufficient condition for the problem solvability is established. In order to find approximate solution of this problem, we employ the Newton method based on the smooth $QR$
Xiang, Meiling, Dai, Hua
openaire   +3 more sources

Solvability and Stability of the Inverse Problem for the Quadratic Differential Pencil

open access: yesMathematics, 2021
The inverse spectral problem for the second-order differential pencil with quadratic dependence on the spectral parameter is studied. We obtain sufficient conditions for the global solvability of the inverse problem, prove its local solvability and ...
Natalia P. Bondarenko, Andrey V. Gaidel
doaj   +1 more source

The nonnegative inverse eigenvalue problem

open access: yesLinear Algebra and its Applications, 2004
This is a survey paper on the inverse eigenvalue problem which in addition presents new results on the spectra of \(5\times 5\) symmetric nonnegative matrices.
Egleston, Patricia D   +2 more
openaire   +2 more sources

A Test Matrix for an Inverse Eigenvalue Problem

open access: yesJournal of Applied Mathematics, 2014
We present a real symmetric tridiagonal matrix of order n whose eigenvalues are {2k}k=0n-1 which also satisfies the additional condition that its leading principle submatrix has a uniformly interlaced spectrum, {2l+1}l=0n-2.
G. M. L. Gladwell   +2 more
doaj   +1 more source

Determination of the Impulsive Dirac Systems from a Set of Eigenvalues

open access: yesMathematics, 2023
In this work, we consider the inverse spectral problem for the impulsive Dirac systems on (0,π) with the jump condition at the point π2. We conclude that the matrix potential Q(x) on the whole interval can be uniquely determined by a set of eigenvalues ...
Ran Zhang, Chuanfu Yang, Kai Wang
doaj   +1 more source

Well-posed Inverse Eigenvalue Problems [PDF]

open access: yesGeophysical Journal of the Royal Astronomical Society, 2007
Summary Inverse eigenvalue problems associated with self-adjoint differential equations of order two or higher are considered. The question of what kind of data are necessary and sufficient to insure the existence of a unique solution is examined. A method of solution for well-posed inverse eigenvalue problems is then presented.
openaire   +2 more sources

Important Issues on Spectral Properties of a Transmission Eigenvalue Problem

open access: yesInternational Journal of Differential Equations, 2021
Nowadays, inverse scattering is an important field of interest for many mathematicians who deal with partial differential equations theory, and the research in inverse scattering is in continuous progress. There are many problems related to scattering by
Besiana Cobani   +2 more
doaj   +1 more source

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