Corentin Le Coz

Université Paris-Sud

Separation and isoperimetric profiles

Analysis and Geometry Seminar

4th June 2020, 3:15 pm – 4:15 pm
Online, (contact organisers for details)

The separation profile was defined for graphs by Benjamini, Schramm and Timar in 2011. It is a monotone coarse-geometric invariant, which means that it is able to give obstruction to the existence of a coarse embedding between graphs or spaces. In a joint work with Antoine Gournay, I have studied links between separation and isoperimetric profiles. I will present our results, with applications. This will lead us a new notion of local separation, that I will introduce at the end of the talk. I will give all the definitions and we will see many examples.

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