A paper by the research fellow at the department of Functional Analysis of the Institute of Mathematics and Mechanics, Namig Guliyev has been published in the journal “Analysis and Mathematical Physics” refereed by the international database “Clarivate Analytics” with a high impact factor 1.792.

In the paper entitled “A Riesz basis criterion for Schrödinger operators with boundary conditions dependent on the eigenvalue parameter” the author establishes a criterion for a set of eigenfunctions of the one-dimensional Schrödinger operator with boundary conditions containing the eigenvalue parameter to be a Riesz basis for L₂(0,π).

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