Department of Mathematics
Faculty of Mathematics and Physics
University of Ljubljana
urban.jezernik AT fmf.uni-lj.si
I am an assistant professor at the Faculty of Mathematics and Physics at the University of Ljubljana in Slovenia, where I also serve as the coordinator of the Mathematics BSc programme.
From 2019 to 2021, I was a postdoctoral fellow at the Alfréd Rényi Institute of Mathematics in Budapest, working in the research group of László Pyber. From 2017 to 2019, I was a Marie Skłodowska-Curie postdoctoral fellow at the University of the Basque Country in the GTA research group. I completed my PhD in 2016 at the University of Ljubljana under the supervision of Primož Moravec. During my graduate studies, I spent a semester at the University of Toronto visiting Sanja Fidler and Raquel Urtasun, and I spent a year at the Institute of Mathematical Sciences ICMAT in Madrid visiting Andrei Jaikin-Zapirain.
Diameter bounds for finite simple Lie algebras (with Marco Barbieri, Matevž Miščič)
Additive diameters of group representations (with Špela Špenko)
preprint (2025) [arxiv, slides]
Random Lie bracket on sl2(Fp) (with Matevž Miščič)
Random Structures & Algorithms (2025) [arxiv]
Two-generation of traceless matrices over finite fields (with Omer Cantor, Andoni Zozaya)
Linear Algebra and its Applications (2025) [journal, arxiv]
Irrationality of generic quotient varieties via Bogomolov multipliers (with Jonatan Sánchez)
International Mathematics Research Notices (2023) [journal, arxiv, video, slides]
Babai's conjecture for high-rank classical groups with random generators (with Sean Eberhard)
Inventiones Mathematicae (2022) [journal, arxiv, video, slides]
On surjectivity of word maps on PSL2 (with Jonatan Sánchez)
Journal of Algebra (2021) [journal, arxiv, code]
Gaps in probabilities of satisfying some commutator-like identities (with Costantino Delizia, Primož Moravec, Chiara Nicotera)
Israel Journal of Mathematics (2020) [journal, arxiv]
Bogomolov multipliers of p-groups of maximal class (with Gustavo Adolfo Fernandez-Alcober)
The Quarterly Journal of Mathematics (2020) [journal, arxiv]
Commuting probability (expository, in Slovenian)
Obzornik za matematiko in fiziko (2018) [journal, pdf]
Commutativity preserving extensions of groups (with Primož Moravec)
Proceedings of the Royal Society of Edinburgh Section A (2018) [journal, arxiv]
Groups in which every non-abelian subgroup is self-normalized (with Costantino Delizia, Primož Moravec, Chiara Nicotera)
Monatshefte fur Mathematik (2018) [journal, arxiv]
Groups in which every non-nilpotent subgroup is self-normalizing (with Costantino Delizia, Primož Moravec, Chiara Nicotera)
Ars Mathematica Contemporanea (2018) [journal, arxiv]
Units of group rings, the Bogomolov multiplier, and the fake degree conjecture (with Javier Garcia-Rodriguez, Andrei Jaikin-Zapirain)
Mathematical Proceedings of the Cambridge Philosophical Society (2017) [journal, arxiv]
Locally finite groups in which every non-cyclic subgroup is self-centralizing (with Costantino Delizia, Primož Moravec, Chiara Nicotera, Chris Parker)
Journal of Pure and Applied Algebra (2017) [journal, arxiv]
Universal commutator relations, Bogomolov multipliers, and commuting probability (with Primož Moravec)
Journal of Algebra (2015) [journal, arxiv]
Groups in which every non-cyclic subgroup contains its centralizer (with Costantino Delizia, Primož Moravec, Chiara Nicotera)
Journal of Algebra and Its Applications (2014) [journal, arxiv]
Bogomolov multipliers of groups of order 128 (with Primož Moravec)
Experimental Mathematics (2014) [journal, arxiv]
Schur multipliers of unitriangular groups
Journal of Algebra (2014) [journal, arxiv]
Universal Commutator Relations (PhD thesis)
University of Ljubljana (2016) [repozitorij, pdf]
Present and future
Workshop on Group Theory at CSASC 2026
Past
Mathematics in Ljubljana (2023, 2024, 2025)
Groups and Topological Groups 2025
Young Geometric Group Theory VIII (2019)
Computational group theory with GAP (2018)
2025/26
Linear algebra
Past
Expander graphs
Elementary number theory
Computer tools in mathematics
BSc
Matevž Miščič: Shuffling by random transpositions (2022)
Tim Milanez: Walks with random permutations (2022)
Matej Cerar: Diameter of the group SL2(Fp) (2022)
Jaša Knap: Short group laws (2024)
Timotej Mlakar: Algebraic signal processing theory and spectral analysis algorithms (2025)
MSc
Saša Trstenjak: The Hasse principle (2022)
Barbara Bone: Sets of integers without three-term arithmetic progressions (2024)
Filip Rus: Calculating digits of pi (2024) [Franc Močnik award]
Tadej Petrič: Ramanujan graphs (2025)
Miloš Puđa: Local permutation stability of groups (2025)
Gašper Terglav: Property (T) for Aut(F5) (2025)
PhD
Matevž Miščič (2024—)
Postdoc
Andoni Zozaya (2023—2025)
Marco Barbieri (2025—)
ARIS research project Rapid random generation of Lie algebras J1-50001(2023)
Honorary plaque for young university professors at the University of Ljubljana (2023)
Paper on Babai's conjecture awarded Top 10 most outstanding research achievements of the University of Ljubljana (2021) [video]
Marie Skłodowska-Curie Individual Fellowship BogomolovMultiplier (2017)
Reinhold Baer Prize for outstanding PhD thesis in group theory (2017)