With the help of an auxiliary eigenvalue problem, we deduce some explicit estimates for the periodic and semiperiodic eigenvalues and the lengths of instability intervals for Hill’s equation with symmetric single-well potentials. We also establish bounds for the gaps in the sets of Dirichlet and Neumann eigenvalues.
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Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 71, No. 6, pp. 858–864, June, 2019.
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Coşkun, H., Başkaya, E. & Kabataş, A. Instability Intervals for Hill’s Equation with Symmetric Single-Well Potential. Ukr Math J 71, 977–983 (2019). https://doi.org/10.1007/s11253-019-01692-x
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DOI: https://doi.org/10.1007/s11253-019-01692-x