13.02.2025, 10:00
– Hörsaal in Haus 10
Forschungsseminar Differentialgeometrie
A gluing construction for complex surfaces with hyperbolic cusps
Hans-Joachim Hein (Münster)
We show that on every compact spin manifold admitting a Riemannian metric of positive scalar curvature Friedrich's eigenvalue estimate for the Dirac operator can be made sharp up to an arbitrarily small given error by choosing the metric suitably.