Entropy and length rigidity of negatively curved manifolds of finite volume

Wednesday, March 22, 2017
Ora Inizio: 
Ora Fine: 
Andrea Sambusetti
Roma La Sapienza

The problems of conjugacy rigidity and of entropy rigidity have a long history, with major breakthroughs in the last twenty years, for negatively curved compact manifolds and symmetric spaces. On the other hand, little is known for finite volume manifolds. I will survey the state of the art of these problems, and explain what can be generalized to finite volume manifolds, pointing out the main difficulties that arise in the non-compact case.