Juhani Koivisto: "Isoperimetric profiles and integrable orbit subequivalence relations"

mardi 2 avr. 2019, 10:15 → 11:45 Europe/Paris

 

Abstract: I will present parts of the ongoing collaboration with F. Le Maître and R. Tessera on the invariance of the isoperimetric profile of finitely generated groups under integrable orbit equivalence, and more generally that one profile is dominated by the other if its orbit equivalence relation is a subequivalence relation of the other orbit equivalence relation and has integrable orbit cocycles.