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PIMS Distinguished Lecture

Fri., Oct. 28, 2022 3:30 p.m.

Location: Research and Innovation Centre 208 (RI 208) and Zoom

Speaker: Alexander Kupers, University of Toronto

Title:  Diffeomorphisms of discs (888 kB) PDF file


Discs are among the simplest manifolds, but their groups of diffeomorphisms can be very complicated. I will describe the techniques from geometry topology and dynamics that were used to understand these groups in low dimensions, the relationship of these groups to stable homotopy theory and number theory in high dimensions, and recent breakthroughs in understanding their rational homotopy type. This talk will be aimed at a broad audience. 

Livestreamed on Zoom. Register in advance for the link:

The zoom link for this talk will be provided to you when you register.