Posted in

Speaker:

Tadayuki Watanabe
Affiliation:

Shimane University
Date:

Wed, 2019-09-18 09:30 - 10:20
Location:

MPIM Lecture Hall
Parent event:

Workshop on 4-manifolds, September 16 - 20, 2019 In this talk, I will explain a method to construct families of diffeomorphisms of a 4-manifold by using a 4D analogue of Goussarov-Habiro's theory of graph surgery in 3D. Our graph surgery would produce lots of potentially nontrivial elements of homotopy groups of diffeomorphism groups of 4-manifolds. I will discuss about their applications to 4D analogue of the Smale conjecture and the 4D light bulb theorem for 3-disk.

© MPI f. Mathematik, Bonn | Impressum & Datenschutz |