EIGENVALUES AND EIGENFUNCTIONS FOR REGULAR STURM-LIOUVILLE EQUATION WITH NON-LOCAL BOUNDARY CONDITIONS

Properties of Sturm-Liouville Eigenfunctions and Eigenvalues

Eigenvalues of Sturm-liouville Problems with Discontinuous Boundary Conditions

For classical regular two-point self-adjoint Sturm-Liouville problems (SLP) the dependence of the eigenvalues on the boundary conditions is well understood because of some surprisingly recent results. Recently there has been a lot of interest in problems with discontinuous boundary conditions. Such conditions are known by various names including transmission conditions, interface conditions, po...

Eigenvalues of regular Sturm - Liouville problems

The eigenvalues of Sturm-Liouville (SL) problems depend not only continuously but smoothly on the problem. An expression for the derivative of the n-th eigenvalue with respect to a given parameter: an endpoint, a boundary condition constant, a coefficient or weight function, is found.

Univalence conditions and Sturm-Liouville eigenvalues

Sturm-Liouville Problems with Singular Non-Selfadjoint Boundary Conditions

Singular boundary conditions are formulated for non-selfadjoint Sturm-Liouville problems which are limitcircle in a very general sense. The characteristic determinant is constructed and it is shown that it can be used to extend the Birkhoff theory for so called ‘Birkhoff regular boundary conditions’ to the singular case. This is illustrated for a class of singular Birkhoff-regular problems; in ...