Spectral stability and instability of finite Riemannian coveringsMPIM

by Werner Ballmann (MPIM)

Tuesday May 12, 2026, 8:45 AM → 9:30 AM Europe/Berlin

MPIM, Vivatsgasse, 7 - Lecture Hall (Max Planck Institute for Mathematics)

Extra talk

The pull-back of an eigenfunction from the base $M$ of a Riemannian covering to the covering manifold $M'$ is an eigenfunction on $M'$. In the talk, I will discuss the existence of new eigenfunctions on $M'$. This is joint work with Sugata Mondal and Panagiotis Polymerakis.