Asymptotic formulae for eigenvalues and eigenfunctions of Sturm--Liouville operators with potentials---distributions. Dirichlet--Neumann boundary conditions

Details Asymptotic formulae for eigenvalues and eigenfunctions of Sturm--Liouville operators with potentials---distributions. Dirichlet--Neumann boundary conditions Asymptotic formulae for eigenvalues and eigenfunctions of Sturm--Liouville operators with potentials---distributions. Dirichlet--Neumann boundary conditions

2011-06-13

arxiv.org/abs/1106.2468v1

Mathematics

Spectral Theory

10 pages

Scientific paper

We deal with the Sturm--Liouville operator $Ly=l(y)=-\dfrac{d^2y}{dx^2}+q(x)y,$ with Dirichlet--Neumann boundary conditions $ y(0)=y'(\pi)=0 $ in the space $L_2[0,\pi]$. We assume that the potential $q$ is complex-valued and has the form $q(x)=u'(x)$, where $u\in L_2[0,\pi]$. Here the derivative is treated in the distributional sense. Our aim is to obtain the detailed asymptotic formulae for eigenvalues and eigen- and associated functions of the operator $L$.

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