news

Jul 23, 2026	Last minute summer update. On August 5, I will speak at TU Berlin in the Seminar der Arbeitsgruppen Diskrete Mathematik/Geometrie & Diskrete Geometrie about “Circular double leaves in the diagrammatic Hecke category”.
May 26, 2026	The summer plan is set. The season starts with the International Workshop on Quantum Groups, Categorification and Related Topics in Kunming, China (June 7–12). In June, one will probably encounter me giving a talk at Oberseminar Darstellungstheorie at the University of Bonn on June 26. Later in the summer, you can meet me at Future Directions in Tensor Categories (Bonn, Germany, Aug 17–21) and Tensor Categories in Representation Theory & Vice Versa (Uppsala, Sweden, Aug 24–27).

Jul 23, 2026

Last minute summer update. On August 5, I will speak at TU Berlin in the Seminar der Arbeitsgruppen Diskrete Mathematik/Geometrie & Diskrete Geometrie about “Circular double leaves in the diagrammatic Hecke category”.

May 26, 2026

The summer plan is set. The season starts with the International Workshop on Quantum Groups, Categorification and Related Topics in Kunming, China (June 7–12). In June, one will probably encounter me giving a talk at Oberseminar Darstellungstheorie at the University of Bonn on June 26. Later in the summer, you can meet me at Future Directions in Tensor Categories (Bonn, Germany, Aug 17–21) and Tensor Categories in Representation Theory & Vice Versa (Uppsala, Sweden, Aug 24–27).

older news →

selected publications

Idempotents, traces, and dimensions in Hecke categories

Ben Elias, Liam Rogel, and Daniel Tubbenhauer

2025

Bib

@misc{elias2025idempotentstracesdimensionshecke,
  title = {Idempotents, traces, and dimensions in Hecke categories},
  author = {Elias, Ben and Rogel, Liam and Tubbenhauer, Daniel},
  year = {2025},
  archiveprefix = {arXiv},
  primaryclass = {math.RT},
  url = {https://arxiv.org/abs/2507.10061},
}

The center of the asymptotic Hecke category and unipotent character sheaves

Liam Rogel and Ulrich Thiel

2026

Accepted in Representation Theory

Bib

@misc{rogel2026centerasymptoticheckecategory,
  title = {The center of the asymptotic Hecke category and unipotent character sheaves},
  author = {Rogel, Liam and Thiel, Ulrich},
  year = {2026},
  archiveprefix = {arXiv},
  primaryclass = {math.RT},
  url = {https://arxiv.org/abs/2307.07276},
  journal = {Representation Theory},
  note = {Accepted in Representation Theory},
}