Eigenvalue bounds for the singular Sturm–Liouville problem with a complex potential

Brown, B.M. and Langer, M. and Marletta, M. and Tretter, C. and Wagenhofer, M. (2003) Eigenvalue bounds for the singular Sturm–Liouville problem with a complex potential. Journal of Physics A: Mathematical and Theoretical, 36 (13). ISSN 0305-4470

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Abstract

The main objective of this paper is to report on a recent algorithm to enclose the eigenvalues of non-selfadjoint singular Sturm–Liouville problems.