Section problems

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Speaker: 
Lei Chen
Institution: 
Caltech
Time: 
Mon, 12/03/2018 - 4:00pm - 5:00pm
Host: 
Jesse Wolfson
Location: 
RH 340P

In this talk, I will discuss a direction of study in topology: Section problems. There are many variations of the problem: Nielsen realization problems, sections of a surface bundle, sections of a bundle with special property (e.g. nowhere zero vector eld). I will discuss some techniques including homology, Thurston-Nielsen classication and dynamics. Also I will share many open problems. Some of the result are joint work with Nir Gadish, Justin Lanier and Nick Salter.