20.02.2025, 10:15  –  Raum 0.12 in Haus 9
Forschungsseminar Differentialgeometrie

Kähler and quaternion-Kähler manifolds of non-negative curvature

Uwe Semmelmann (Stuttgart)

A well-known conjecture of LeBrun and Salamon states that quaternion Kähler manifolds of positive scalar curvature should be symmetric. This conjecture is still widely open. But even under the much... 

20.02.2025, 14:15  –  Raum 2.22 in Haus 9
Verteidigung Dissertation / PhD Defence

Index theory for geometric elliptic differential operators of first order

Alberto Richtsfeld (UP)

This thesis investigates the Local Index Theorem and the Atiyah-Patodi-Singer Index Theorem for geometric elliptic operators of first order beyond the classical Dirac-type operators.

Chiral geometric... 

16.04.2025, 11:00  –  Campus Golm, Building 9, Room 2.22 and via Zoom
Arbeitsgruppenseminar Analysis

Examples of Poisson manifolds with compactness properties

Camilo Angulo (Universität Göttingen)

Poisson geometry lies in the intersection of symplectic geometry, foliation theory and Lie theory. As in each of these areas compactness hypotheses yield a wealth of results, it would be desirable to... 

30.04.2025, 11:00  –  Campus Golm, Building 9, Room 2.22 and via Zoom
Arbeitsgruppenseminar Analysis

Towards random noncommutative geometry

Carlos Perez-Sanchez (Heidelberg)

The well-known question whether one can 'hear the shape of a drum', posed by Marek Kac, has, also famously, a negative answer constructed by Gordon, Webb and Wolpert. In noncommutative geometry,...