Abstract
We characterize the domains of all self-adjoint extensions of the two-interval minimal operator which associated with two general even order linear ordinary differential expressions in terms of real-parameter solutions of the two differential equations. This is for endpoints which are regular or singular and for arbitrary deficiency index.
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Everitt W.N., Zettl A.: Sturm-Liouville differential operators in direct sum spaces. Rocky Mt. J. Math. 16, 497–516 (1986)
Boyd J.P.: Sturm-Liouville eigenvalue problems with an interior pole. J. Math. Phys. 22(8), 1575–1590 (1981)
Gesztesy F., Kirsch W.: One-dimensional Schrödinger operators with interactions singular on a discrete set. J. Reine Angew. Math. 362, 28–50 (1985)
Wang A., Sun J., Zettl A.: Characterization of domains of self-adjoint ordinary differential operators. J. Differ. Equ. 246, 1600–1622 (2009)
Hao, X., Sun, J., Wang, A., Zettl, A.: Characterization of Domains of Self-Adjoint Ordinary Differential Operators II. (2011, accepted by Results in Mathematics)
Suo, J., Wang, W.Y., Zettl, A., Zhou, L.: Characterization of Domains of Self-Adjoint Ordinary Differential Operators in Direct Sum Spaces. Preprint
Everitt W.N., Zettl A.: Differential operators generated by a countable number of quasi-differential expressions on the line. Proc. Lond. Math. Soc. 3(64), 524–544 (1992)
Zettl, A.: Sturm-Liouville theory. In: Mathematical Surveys and Monographs, vol. 121. American Mathematical Society (2005)
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Suo, J., Wang, W. Two-Interval Even Order Differential Operators in Direct Sum Spaces. Results. Math. 62, 13–32 (2012). https://doi.org/10.1007/s00025-011-0126-9
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DOI: https://doi.org/10.1007/s00025-011-0126-9