Festkolloquium am 21. November 2025

Zum Wintersemester 2025/2026 ist Prof. Dr. Joachim Stöckler in Ruhestand gegangen. Zur Verabschiedung veranstalten die Fakultät für Mathematik und der Freundesverein der Fakultät ein Festkolloquium.

Programm

• 15:00 Uhr: Sektempfang im E23
• Raumwechsel in Hörsaal E28
• 15:45 Uhr: Grußworte des Dekans Prof. Dr. Stefan Turek
• 15:50 Uhr: Laudatio von Prof. Dr. Heribert Blum
• 16:00 Uhr: Festvortrag von Prof. Dr. Karlheinz Gröchenig (Universität Wien)

Totally positive functions in sampling theory and time-frequency analysis
Abstract: Totally positive functions play an important role in approximation theory, statistics, and nowadays also in time-frequency analysis. In this talk I will present sampling theorems for spaces that are spanned by the integer shifts of a totally positive function. These are often used as a substitute for the bandlimited functions. A related problem are the spanning properties of time-frequency shifts. These questions go back to the mathematical foundations of quantum mechanics as formulated by von Neumann.

Poster (pdf) zur Veranstaltung