GeoTop Geometry Day - July 2026

13:00-13:15:
[Room: Aud 07]

Arrival (tea/coffee)

13:15-14:15:
[Room: Aud 07]

Speaker: John Lott

Title: Under Ricci flow, a 3-torus goes flat

Abstract: There are still quite a few open questions about how Ricci flow behaves on compact three dimensional manifolds. For example, if the manifold admits a locally homogeneous Riemannian metric, can we say that the canonical Ricci flow starting from any initial metric has a locally homogeneous limit? I will answer this when the manifold fibers over a circle with torus fibers.

14:15-14:45:

Tea/coffee/cookies

14:45-15:45:
[Room: Aud 07]

Speaker: Bruce Kleiner

Title: Rigidity and flexibility of mappings between Carnot groups

Abstract: We discuss recent progress on bilipschitz and quasisymmetric mappings between Carnot groups.  Motivation for studying such mappings comes from geometric group theory, geometric mapping theory, analysis on metric spaces, and PDE.