Lipschitz Maps From Spaces With Many Rectifiable Curves

GEOMETRY/DYNAMICAL SYSTEMS SEMINAR
Topic:Lipschitz Maps From Spaces With Many Rectifiable Curves
Speaker:Jeff Cheeger
Affiliation:Courant Institute
Date:Tuesday, February 23
Time/Room:4:00pm - 5:00pm/S-101

We will survey results (partly joint with Kleiner, and with Kleiner and Naor) on possibly fractal metric spaces which in a suitable sense have many rectifiable curves. We will try to cover: differentiable structure, a bi-Lipschitz nonembedding theorem for Banach space targets with the Radon-Nikodym Property, the example of Heisenberg group with its Carnot-Caratheodory metric, a quantitative bi-Lipschitz nonembedding theorem for the Heisenberg group in $L_1$ and an application to theoretical computer science.