Add to ORKGFirstly, we analyze some spectral properties of the non-self-adjoint Hill operator with piecewise continuous even potential. Then using this we find conditions on the potential of the non-self-adjoint Mathieu operator, such that all eigenvalues of the periodic, antiperiodic, Dirichlet, and Neumann boundary value problems are simple
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
AbstractIn this paper, non-self-adjoint Sturm–Liouville operators in Weyl’s limit-circle case are st...
AbstractWe find necessary and sufficient conditions to guarantee the existence resp. coexistence of ...
AbstractWe prove that all the eigenvalues of a certain highly non-self-adjoint Sturm–Liouville diffe...
We give a characterisation of the spectral properties of linear differential operators with constant...
AbstractWe study the spectrum of the linear operator L=−∂θ−ϵ∂θ(sinθ∂θ) subject to the periodic bound...
This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonse...
We give a characterisation of the spectral properties of linear differential operators with constant...
In this paper we consider generalized eigenvalue problems for a family of operators with a polynomia...
Şeref, Fulya (Dogus Author) -- Veliev, Oktay A. (Dogus Author)In this article we obtain the sharp as...
AbstractLet A be a subset of the family of all self-adjoint extensions of a symmetric operator A0 wi...
International audienceIn this paper we consider generalized eigenvalue problems for a family of oper...
This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonse...
AbstractWe investigate the spectrum of a typical non-self-adjoint differential operator AD=−d2/dx2⊗A...
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
AbstractIn this paper, non-self-adjoint Sturm–Liouville operators in Weyl’s limit-circle case are st...
AbstractWe find necessary and sufficient conditions to guarantee the existence resp. coexistence of ...
AbstractWe prove that all the eigenvalues of a certain highly non-self-adjoint Sturm–Liouville diffe...
We give a characterisation of the spectral properties of linear differential operators with constant...
AbstractWe study the spectrum of the linear operator L=−∂θ−ϵ∂θ(sinθ∂θ) subject to the periodic bound...
This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonse...
We give a characterisation of the spectral properties of linear differential operators with constant...
In this paper we consider generalized eigenvalue problems for a family of operators with a polynomia...
Şeref, Fulya (Dogus Author) -- Veliev, Oktay A. (Dogus Author)In this article we obtain the sharp as...
AbstractLet A be a subset of the family of all self-adjoint extensions of a symmetric operator A0 wi...
International audienceIn this paper we consider generalized eigenvalue problems for a family of oper...
This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonse...
AbstractWe investigate the spectrum of a typical non-self-adjoint differential operator AD=−d2/dx2⊗A...
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
summary:Two simple methods for approximate determination of eigenvalues and eigenvectors of linear s...
AbstractIn this paper, non-self-adjoint Sturm–Liouville operators in Weyl’s limit-circle case are st...