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Speaker:
Geoffroy Horel
Affiliation:
Münster/MPIM
Date:
Thu, 26/11/2015 - 15:00 - 16:00
Location:
MPIM Lecture Hall
Parent event:
MPI-Oberseminar The operad of little n-disks is a fundamental object in algebraic topology that was introduced as a way of recognizing n-fold loop spaces. I will recall its definition and then survey some recent work of Dwyer--Hess and Boavida--Weiss relating mapping spaces between the operads of little disks and spaces of knots and higher dimensional knotted objects. I will then describe a faithful action of the absolute Galois group of Q on the profinite completion of the operad of little 2-disks.
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