Title: GT-shadows and their action on child's drawings
Speaker: Vasily Dolgushev
Speaker Info: Temple University
Brief Description:
Special Note:
Abstract:
I will introduce a functor from a poset of certain finite index normal subgroups of the braid group on 4 strands to the category of finite groupoids. The limit of this functor coincides with the profinite version of the Grothendieck-Teichmueller group introduced by Vladimir Drinfeld in 1990. My interest in this functor is motivated by the famous question posed by Yasutaka Ihara at the ICM of 1990. This talk is based on a joint work (in progress) with Khanh Le and Aidan Lorenz.Date: Tuesday, August 14, 2018