The study group “Variations on Character Varieties” is a joint initiative by MPI Leipzig, Leipzig University, and Paderborn University. The study group investigates different definitions and topologies of character varieties, focusing on key subspaces and instructive examples. We contrast “flexible” cases, like discrete and faithful or quasi-Fuchsian representations, with “rigid” ones that may consist of only a few points, and also discuss…
From September 8 - 10, the conference Women in Harmonic Analysis took place in Paderborn. The conference was especially addressed to female mathematicians working in the broad field of harmonic analysis, both commutative and non-commutative, and the speakers should all be female.Nevertheless, anyone interested was welcome to attend!
Conference webpage: https://sites.google.com/view/womeninharmonicanalysis/home
From September 1–5, 2025, the Lie Theory, Spectra, and Dynamics conference took place in Paderborn.The event brought together researchers to explore recent advances in Lie theory, spectral theory, and dynamical systems on symmetric and homogeneous spaces. Participants engaged with diverse perspectives, ranging from representation theory to microlocal analysis, and connected with experts from across these interconnected fields.
Conference…
We are delighted to announce that Benjamin Delarue has successfully passed his habilitation on July 7, 2025. His thesis, titled “Symmetries in Hyperbolic Dynamics,” marks a significant achievement in his academic career. Congratulations on this remarkable milestone!
Congratulations to Guenda for winning the teaching award at University of Luxembourg where she had been teaching and doing research before joining our group at Paderborn.
https://www.uni.lu/fstm-en/news/teaching-awards-2024-for-two-mathematicians/
The Spectral Analysis Group congratulates Philipp Schütte who successfully defended his excellent PhD thesis. The main results of his thesis had previously been published in the following research articles:
Barkhofen, S., Schütte, P., & Weich, T. (2022). Semiclassical formulae for Wigner distributions. Journal of Physics A: Mathematical and Theoretical, 55(24), 244007.
Schütte, P., Weich, T., & Barkhofen, S. (2023). Meromorphic Continuation of…
The Spectral Analysis Group congratulates Lasse Wolf who successfully defended his excellent PhD thesis. The main results of his thesis had previously been published in the following research articles
Hilgert, J., Weich, T., & Wolf, L. L. (2023). Higher rank quantum-classical correspondence. Analysis & PDE, 16(10), 2241-2265.
Weich, T., & Wolf, L. L. (2023). Absence of principal eigenvalues for higher rank locally symmetric spaces.…
This week the first release v1.0.0 of the open source Python package "PyZEAL" was published. The project is being developed by Philipp Schütte as part of his PhD in the research group spectral analysis and deals with the root finding problem for holomorphic functions. Additional information on how to obtain the package or contribute to it can be found here.
Der neu gegründete Sonderforschungsbereich (SFB/TRR 358) "Ganzzahlige Strukturen in Geometrie und Darstellungstheorie" sucht an seinem Standort Paderborn zum nächstmöglichen Zeitpunkt Studentische Hilfskräfte (m/w/d) oder Wissenschaftliche Hilfskräfte mit Bachelorabschluss (m/w/d), die den SFB bei der Gestaltung von Webseiten und der Durchführung von Konferenzen organisatorisch und technisch unterstützen sollen. Weiter Infos finden sich hier.
Chrisitan Arends hat seine von Joachim Hilgert betreute Promotion am 23. Januar 2023 mit großem Erfolg verteidigt. Die AG-Spektralanalysis gratuliert hierzu herzlich!
DFG fördert neuen Sonderforschungsbereich
Die Deutsche Forschungsgemeinschaft (DFG) fördert ab Januar 2023 den neuen Sonderforschungsbereich/Transregio „Ganzzahlige Strukturen in Geometrie und Darstellungstheorie“ (SFB/TRR 358) an dem die AG Spektralanalysis mit zwei projekten beteiligt ist. Der Verbund wird von den Universitäten Bielefeld und Paderborn getragen. Stellvertretender Sprecher ist Prof. Dr. Igor Burban von der Universität Paderborn.…
The journal "Inventiones Mathematicae" is considered as one of the world leading journals and it is considered as a special highlight if the work of a young scientist is published in such a journal. This has been recently achieved by Benjamin Delarue, a postdoc of the group in his article "The Ruelle zeta function at zero for nealy hyperbolic 3-manifolds" that he co-authored with Mihajlo Cekic (Uni Zürich), Semyon Dyatlov (MIT) and Gabriel…
The conference Spectra and Dynamics on (Locally) Symmetric Spaces will be held at Paderborn University from February 14 to 18, 2022.
Further information on the conference website.
A Mini Workshop on Anosov actions, Anosov representations and resonances of Anosov flows is taking place at Oberwolfach 5-11 December 2021.
Organizers:
Colin Guillarmou (Paris Saclay)
Benjamin Küster (Paderborn)
Beatrice Pozzetti (Heidelberg)
Tobias Weich (Paderborn)
