Wang, AipingZettl, Anton2021-12-172021-12-172018-01-10Wang, A., & Zettl, A. (2018). Characterization of domains of symmetric and self-adjoint ordinary differential operators. <i>Electronic Journal of Differential Equations, 2018</i>(15), pp. 1-18.1072-6691https://hdl.handle.net/10877/15070We characterize the two point boundary conditions which determine symmetric ordinary differential operators of any order, even or odd, with complex coefficients and arbitrary deficiency index, in a Hilbert space. The self-adjoint characterizations are a special case.Text18 pages1 file (.pdf)enAttribution 4.0 InternationalSymmetric domainsDifferential operatorsLC solutionsCharacterization of domains of symmetric and self-adjoint ordinary differential operatorsArticle