The article "Self-adjoint and non-self-adjoint extensions of symmetric q-Sturm-Liouville operators", which was first authored by the founder of Khazar University, chairman of the Board of Directors and Trustees, professor of the Department of Mathematics, academician Hamlet Isakhanli and co-authored by Bilander Allahverdiyev, professor of the same department was published in "Filomat" journal (2023, Vol. 37, No. 24). Note that "Filomat" journal is indexed in "Web of Science" and "Scopus" databases.

A space of boundary values is constructed for minimal symmetric regular and singular q-Sturm-Liouville operators in limit-point and limit-circle cases in the article. A description of all maximal dissipative, maximal accumulative, self-adjoint, and other extensions of such symmetric q-Sturm-Liouville operators is given in terms of boundary conditions.

Link to the article: https://www.pmf.ni.ac.rs/filomat-content/2023/37-24/37-24-2-20801.pdf