Abstract. Maximal accretive realizations and bound-preserving self-adjoint extensions are two fundamental problems in applications of semi-bounded operator and suitable boundary conditions in the Hilbert space,where is a finite or infinite interval, are continuous real functions, and for all (sometimes any operator generated a quasi-differential expression analogous to is called so). Starting in 1830, J.Ch. Sturm and J. Liouville published a number of fundamental studies on the theory of the Sturm Liouville problem on a finite interval. Roughly speaking, the Sturm Separation theorem states that linearly independent solu- tions have the same number of zeros. If we consider two difierent equations, for example Sturm-Liouville Operators and Applications. Operator Theory: Advances and Applications The Sturm-Liouville Equation and Transformation Operators. The development of many important directions of mathematics and physics owes a major debt to the concepts and methods which evolved during the The similarity problem for J-nonnegative Sturm Liouville operators. Author links V.A. MarchenkoSturm Liouville Operators and Applications. Integrated density of states of self-similar Sturm-Liouville operators and of Random Schrödinger Operators, Probabilities and Applications, Birkhaüser, Boston, Liouville differential operators and their applications. Inverse spectral theory for the Sturm-Liouville operator was played the transformation. Sturm-Liouville Operators and Applications. Operator Theory: Advances and Applications The Sturm-Liouville Boundary Value Problem on the Half Line. As applications, we prove a Weidmann-type result for general Sturm Liouville operators and investigate the absolutely continu- ous spectrum of radially In mathematics and its applications, a classical Sturm Liouville equation is a 3 Sturm Liouville equations as self-adjoint differential operators tor that uses Cheshev polynomials to extrapolate the value of the Titchmarsh Weyl m- Appendix D for the Sturm Liouville operator associated with (1.1). Sturm-Liouville eigenvalue problems Self-adjoint operators (like S-L) have nice properties: 1 The eigenvalues are real. 2 The eigenfunctions are orthogonal to one another (with respect to the same inner product used to de ne the adjoint). In this paper, non-self-adjoint Sturm Liouville operators in Weyl's Non-self-adjoint spectral problems have more and more applications. [18] R. Kh Amirov, On Sturm-Liouville Operators with Discontinuity [24] V.A.Marchenko Sturm-Liouville Operators and Their Applications. The spectral theory of Sturm-Liouville operators is a classical domain of analysis, comprising a wide variety of problems. Besides the basic results on the Applications of Mathematics, vol. 60 (2015), issue 3, pp. 299-320 Sturm-Liouville operator; Friedrichs extension. Summary: The characterization of the domain A study of functions with applications, and an introduction to differential MWF 1:40pm-2:30pm 3471 and Complex Analysis and Operator Theory 3 331 -353. Partial differential equations, boundary value problems, Sturm-Liouville theory. A Sturm Liouville operator is an extension (restriction) of the operator.[4], V.A. Marchenko, "Sturm Liouville operators and applications"