Speaker：Wu Jie (Hebei Normal University, Shijiazhuang, China)
Time：2020-06-08 15:00 （Beijing time）
Abstract:
In this talk, we will discuss combinatorial and braided descriptions of homotopy groups of the 2-sphere. We will also discuss the connections between relative Lie algebras of Brunnian braid groups over the 2-sphere and the unstable Adams spectral sequence.
Join Zoom Meeting
https://zoom.us/j/95754262671?pwd=b1RINGlYSytwck1OZFpLL0UzMVR3QT09
Meeting ID: 957 5426 2671
Password: 259196
