Jacopo De Simoi, University of Toronto
Dynamical rigidity of convex billiards
Monday, June 21 2021, at 17:00
https://zoom.us/j/91544493126?pwd=cHVlNEFkZ1lHWjNONG9kWHdoaGwxQT09 | |
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Leszek Demkowicz, Oden Institute, The University of Texas at Austin
The DPG Method for Convection-Reaction Problems
Monday, May 10 2021, at 17:00
https://us02web.zoom.us/j/81021076857 | |
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Ernesto De Vito, Università di Genova
Machine Learning as an inverse problem
http://On line
Monday, May 03 2021, at 16:00
https://us02web.zoom.us/j/5772228296 | |
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Ricardo H. Nochetto, University of Maryland
Local discontinuous Galerkin methods for prestrained and bilayer plates
Monday, April 12 2021, at 17:00
https://us02web.zoom.us/j/87144322081 | |
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Guido De Philippis, Courant Institute of Mathematical Sciences
(Boundary) Regularity for area minimizing surfaces
Tuesday, March 16 2021, at 17:00
polimi-it.zoom.us/j/88596504355 | |
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Martin Bridson, University of Oxford
Chasing finite shadows of infinite groups through geometry
http://unimib.webex.com/unimib-it/j.php?MTID=m54c7d9c5d6d35e...o riunione
Friday, February 19 2021, at 15:00
https://unimib.webex.com/unimib-it/j.php?MTID=m54c7d9c5d6d35eac4f0c14fdecf4cf0f
Numero riunione:121 183 7342 Password: M6Fm8ZnPFk3 |
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Abstract
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There are many situations in geometry and group theory where it is natural, convenient or necessary to explore infinite groups via their actions on finite objects. But how much understanding can one really gain about an infinite group by examining its finite images? Sometimes little, sometimes a lot. In this colloquium talk, I will sketch the rich history of this problem and describe how input from geometry and low-dimensional topology, mingling with algebra and arithmetic, have transformed the subject in recent years. I shall also describe some open problems.
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