School Seminars and Colloquia

What is the plane?


by Professor Danny Calegari

Institution: Caltech
Date: Wed 6th October 2004
Time: 11:00 AM
Location: Russell Love Th., Richard Berry Building, The University of Melbourne

Abstract: The world of two-dimensional topology still contains profound mysteries. I will discuss how to classify actions of surface groups on the plane in every genus and every degree of smoothness. A key ingredient is a 100 year old theorem of Brouwer.

For More Information: Paul Norbury: 8344 9711,

Colloquium Website