We consider the fourth-order spectral problem (4)()−(()′())=(),∈(0,) with spectral parameter in the boundary condition. We associate this problem with a selfadjoint operator in Hilbert or Pontryagin space. Using this operator-theoretic formulation and analytic methods, we investigate locations (in complex plane) and multiplicities of the eigenvalues, the oscillation properties of the eigenfunctions, the basis properties in (0,), ∈(1,∞), of the system of root functions of this problem
In this paper, we consider a fourth-order boundary value problem with impulse. We apply the Fourier ...
ABSTRACT. A non-linear functional Q[u, v] is given that governs the loss, respectively gain, of (dou...
We give a characterisation of the spectral properties of linear differential operators with constant...
In this article we consider eigenvalue problems for fourth-order ordinary differential equation wit...
In this work, we study a fourth-order boundary value problem with eigenparameter dependent boundary ...
AbstractIn this work, we study a fourth-order boundary value problem with eigenparameter dependent b...
A kind of fourth-order boundary value problem with eigenparameter-dependent boundary and transmissio...
In this thesis the spectral properties of differential operators generated by the formally self-adjo...
In this work, we study a fourth-order boundary value problem problem with eigenparameter dependent b...
Click on the link to view the abstract.Keywords: Fourth order differential equation, eigenvalue depe...
summary:Necessary and sufficient conditions for discreteness and boundedness below of the spectrum o...
Paper I. Trace Formulae and Spectral Properties of FourthOrder Differential Operators.We derive trac...
These notes will be useful and of interest to mathematicians and physicists active in research as we...
In this paper, we consider the spectra of a discrete Sturm-Liouville problem with two eigenparameter...
This paper is concerned with the accurate numerical approximation of the spectral properties of the ...
In this paper, we consider a fourth-order boundary value problem with impulse. We apply the Fourier ...
ABSTRACT. A non-linear functional Q[u, v] is given that governs the loss, respectively gain, of (dou...
We give a characterisation of the spectral properties of linear differential operators with constant...
In this article we consider eigenvalue problems for fourth-order ordinary differential equation wit...
In this work, we study a fourth-order boundary value problem with eigenparameter dependent boundary ...
AbstractIn this work, we study a fourth-order boundary value problem with eigenparameter dependent b...
A kind of fourth-order boundary value problem with eigenparameter-dependent boundary and transmissio...
In this thesis the spectral properties of differential operators generated by the formally self-adjo...
In this work, we study a fourth-order boundary value problem problem with eigenparameter dependent b...
Click on the link to view the abstract.Keywords: Fourth order differential equation, eigenvalue depe...
summary:Necessary and sufficient conditions for discreteness and boundedness below of the spectrum o...
Paper I. Trace Formulae and Spectral Properties of FourthOrder Differential Operators.We derive trac...
These notes will be useful and of interest to mathematicians and physicists active in research as we...
In this paper, we consider the spectra of a discrete Sturm-Liouville problem with two eigenparameter...
This paper is concerned with the accurate numerical approximation of the spectral properties of the ...
In this paper, we consider a fourth-order boundary value problem with impulse. We apply the Fourier ...
ABSTRACT. A non-linear functional Q[u, v] is given that governs the loss, respectively gain, of (dou...
We give a characterisation of the spectral properties of linear differential operators with constant...