Tuesday, April 18, 2023
04/18/2023 - 4:15pm
I will discuss metric deformations of lattices in semisimple Lie groups. The underlying question is whether the class of lattices is stable (rigid) under distortions of 'sublinear' nature. I will present work that settles this question in the affirmative in almost all settings. For groups without real rank 1 factors, this amounts to a sublinear generalization of the classical quasi-isometric rigidity results.