Seminar of Anne-Laure Thiel at DMG, University of Trieste

[mattia mecchia]

*Seminar announcement *
University of Trieste

Wednesday 5 December 2018, at 2:00 p.m.

*Anne-Laure Thiel*

will speak on *
*

*Categorical action of the braid group of the cylinder.*

Abstract:
In their seminal work, Khovanov and Seidel have used the polymorphous 
nature of the usual braid group (ie of finite type A) and hence its 
various definitions (diagrammatic presentation, mapping class group...) 
to construct a categorical action of this group which categorifies its 
famous Burau linear representation. The important fact is that this 
action detects subtle topological properties which ensures its 
faithfulness unlike the Burau linear representation. The aim of this 
talk is to describe a generalization of their approach to another Artin 
group, the one of type B - aka braid group of the cylinder or extended 
braid group of affine type A. Joint work with Agnès Gadbled and Emmanuel 
Wagner.

**


VENUE: Seminar room DMG, Sezione di Matematica e Informatica, H2 
building, Via A. Valerio 12/1, 3rd floor, room 334

EVERYBODY INTERESTED IS MUCH WELCOME TO ATTEND

-- 
Prof. Mattia Mecchia
Dipartimento Matematica e Geoscienze
Universita' degli Studi di Trieste
Via Valerio 12/1 - 34127 Trieste
Phone: +39-0405582645 Fax: +39-0405582636
http://www.dmi.units.it/~mecchia/