Roman Bessonov

University of Ljubljana
Faculty of Mathematics and Physics
Jadranska ulica 19
1000 Ljubljana, Slovenia
Office: J21 104

roman.bessonov@fmf.uni-lj.si

I'm an associate professor at the University of Ljubljana, Slovenia. I'm interested in spectral and scattering theory, orthogonal polynomials, complex analysis, Hankel and Toeplitz operators, and, more broadly, in the interplay of function and operator theories with applications in mathematical physics.

News

With A. Kostenko and U. Jezernik, we started the new Spectral Theory Seminar at the University of Ljubljana and IMFM.
I'm participating in the conference Spectral Theory and Mathematical Physics in honor of Barry Simon's 80th birthday.

Employment

2024-now	Associate Professor Faculty of Mathematics and Physics, University of Ljubljana, Slovenia
2014-2025	Researcher St.Petersburg Department of V.A.Steklov Institute of Mathematics, Russia
2018-2024	Associate Professor St.Petersburg State University, Russia
2014-2018	Researcher Chebyshev Laboratory, St.Petersburg State University, Russia
2013-2014	Postdoctoral fellow School of Mathematical Sciences, Tel Aviv University, Israel

Education

2013	PhD (candidate of science degree) in Mathematics St.Petersburg Department of V.A.Steklov Institute of Mathematics, Russia Supervisor: V.V.Kapustin
2009	Specialist degree in Mathematics St.Petersburg State University, Russia Supervisor: V.P.Havin

Papers

Preprints of my papers are avaliable on this ArXiv webpage. For published versions please visit my profile on MathSciNet. See also ORCID, Google Scholar or COBISS.

Lecture notes

Here is a collection of my lecture notes from St.Petersburg (2016-2023). Most of them are written by students following my presentation on the blackboard. Warm thanks to Mikhail Opanasenko, who organized exellent typesetting and proofreading work.

Last update: 22.09.2025