Abstract: Consider the eigenvalue problem for the discrete Laplacian on finite regular graphs. One can relate three types of phase-space distributions associated to the resulting eigenfunctions, namely Patterson–Sullivan, invariant Ruelle, and Wigner distributions. It has been shown that, on hyperbolic surfaces, these three phase-space distributions are asymptotically equivalent, naturally raising the question of whether a similar relationship…
Mathezirkel-Treffen am 10. Juni 2026 (18-21 Uhr) und 13. Juni 2026 (10-13 Uhr)
Raum und Uhrzeit: virtuell/online mit der Videokonferenz-Software Zoom (Campus-Lizenz der Uni Paderborn) von 18:00 bis 21:00 Uhr (am Mi. 10.06.2026) bzw. von 10:00 bis 13:00 Uhr (am Sa. 13.06.2026)
Leiterin des Workshops: Dr. Kerstin Hesse
Beschreibung: Die Fermatsche Vermutung, dass es keine natürlichen Zahlen a, b, c gibt, welche die Gleichung an + bn = cn mit…
Weierstrass Lecture
This year, Professor Dr Peter Sarnak, Eugene Higgins Professor of Mathematics at Princeton University and member of the Institute for Advanced Study, will give the Weierstrass Lecture.
Further information can be found at https://math.uni-paderborn.de/forschung/weierstrass-vorlesung#weierstrass-vorlesung-2026.
The lecture will take place on 12 June at 4 pm in lecture theatre O1.
Title: The Grunwald Problem for solvable groups
Abstract: Let $K$ be a number field. The Grunwald problem for a finite group (scheme) G/K asks what is the closure of the image of $H^1(K,G) \to \prod_{v \in M_K} H^1(K_v,G)$. For a general $G$, there is a Brauer—Manin obstruction to the problem, and this is conjectured to be the only one. In 2017, Harpaz and Wittenberg introduced a technique that managed to give a positive answer (BMO is the…
We are represented at the Ideenexpo in Hanover. Visit us at our stand and try out exciting STEM projects with us!
https://www.ideenexpo.de/
20.06.2026-28.06.2026 Ideenexpo
Abstract:
Bei Interesse an einer online-Teilnahme (sei es regelmäßig oder auch nur an einem bestimmten Vortrag) bitten wir vorab mit Tobias Weich Kontakt aufzunehmen, damit der Teilnahmelink geteilt werden kann.
We cordially invite you to the graduation ceremony of the EIM faculty on 26 June 2026 in the Audimax of Paderborn University. News about the programme and registration can be found on the event website.
On June 29, 2026 the Colloquium of the CRC-TRR 358 will take place at the Department of Mathematics, Paderborn. The speakers are Hans-Joachim Hein (University Münster) and Wolfgang Lück (University Bonn).
Abstract:
Bei Interesse an einer online-Teilnahme (sei es regelmäßig oder auch nur an einem bestimmten Vortrag) bitten wir vorab mit Tobias Weich Kontakt aufzunehmen, damit der Teilnahmelink geteilt werden kann.
Abstract: This talk is related to the relative Langlands' program, which aims to extend the classical Langlands' program to spherical varieties. In the classical case, a well-known \emph{trace Paley-Wiener theorem} was given by Bernstein, Deligne and Kazhdan in 1986. It gives a characterization of the functions
$$\pi \mapsto \mathrm{Tr}(\pi(f)),$$
with $G$ a reductive $p$-adic group, and where $\pi$ ranges over isomorphism classes of smooth…
