SMS scnews item created by Stephan Tillmann at Tue 17 Mar 2015 1530
Type: Seminar
Distribution: World
Expiry: 16 Jun 2015
Calendar1: 19 Mar 2015 1200-1300
CalLoc1: Carslaw 535A
Auth: tillmann@p710.pc (assumed)

# Geometry and Dynamics

### Andy Hammerlindl

Thursday 19 March 2015 from 12:00–13:00 in Carslaw 535A

Abstract: Consider a function from the circle to itself such that the derivative is greater than one at every point. Examples are maps of the form $$f(x) = mx$$ for integers $$m > 1$$. In some sense, these are the only possible examples. This fact and the corresponding question for maps on higher dimensional manifolds was a major motivation for Gromov to develop pioneering results in the field of geometric group theory.