This workshop is dedicated to recent innovations in the quantitative study of finite-index subgroups in discrete groups. In particular :
- Stability of permutation almost-representations of a group;
- Subgroup growth;
- Benjamini--Schramm convergence of random Schreier graphs beyond free groups;
- Fine spectral properties of such graphs.
We aim at finding generalisations to wider classes, and applications of recent results.
The workshop will take place at Institut Henri Poincaré, room 201.
Contact : Jean Raimbault (
jean.raimbault@univ-amu.fr).