Algebra/Topology Seminar by Alexander Kupers – University of Copenhagen

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Department of Mathematical Sciences > Calendar > Events > Algebra/Topology Semin...

Algebra/Topology Seminar by Alexander Kupers

Talk by Alexander Kupers (Copenhagen University)

Title: Diffeomorphisms of disks

Abstract: Disks are arguably the most basic manifolds. I will explain what is known about their diffeomorphisms groups in dimension at least 5, and discuss recent progress in understanding their rational homotopy groups. In particular, I will explain why these are degreewise finitely-generated when n is not 4, 5 or 7.