08.10.2024, 10:15 - 11:45
– 3.06.H02
Kálmán Lecture
Particle Methods in Machine Learning and Inverse Problems
Martin Burger, Helmholtz Imaging
Christian Rose (Technische Universität Chemnitz)
We show that if the negative part of the Ricci curvature of a compact manifold is in the Kato-class, the Cheeger constant of the manifold can be bounded below by a positive constant. This is obtained by suitable heat kernel and eigenvalue estimates as well as a Buser-type inequality which relates the Cheeger constant and the first non-zero eigenvalue.