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Explore the concept of finite index rigidity in hyperbolic groups through this 54-minute lecture by Nir Lazarovich. Delve into the proof that isomorphic finite index subgroups of non-elementary hyperbolic groups must have the same index. Gain insights into the tools and ideas used to demonstrate this mathematical property. Part of the Workshop on Geometry of Subgroups held at the Centre de recherches mathématiques (CRM), this talk offers a deep dive into advanced topics in geometric group theory and hyperbolic geometry.
