Math Club

from Wednesday
January 01, 2020 to Sunday
May 31, 2020
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Instructions for subscribing to Stony Brook Math Department Calendars

Wednesday
February 12, 2020

7:00 PM
Math Tower P-131
Brandon Gontmacher, Stony Brook University
Dehn Twists and the Mapping Class Group

The use of algebra - in particular, group theory - to understand the topology and geometry of a space is the goal of geometric group theory. At the heart of this is the mapping class group, which tells us about the maps from a space to itself. In particular, elements of the mapping class group called Dehn twists play a central role and are some of the best understood types of maps. We will focus on surfaces (2-manifolds), and specifically will look at the torus as a toy example throughout.


Show events for:
Instructions for subscribing to Stony Brook Math Department Calendars