Subgroup Separability of 3-Manifold Groups and Its Applications

Explore a comprehensive lecture on the subgroup separability of 3-manifold groups and its applications, presented by Hongbin Sun at the Workshop on Groups around 3-Manifolds. Delve into a complete characterization of subgroup separability in 3-manifold groups, focusing on the graph-of-group structure induced by torus decomposition. Discover two significant applications of this characterization: subgroup distortion and Grothendieck rigidity of 3-manifold groups. Learn about the collaborative work with Hoang Thanh Nguye on subgroup distortion. Gain valuable insights into advanced mathematical concepts during this 52-minute presentation, part of the Atelier sur Groupes autour de 3-variétés held at the Centre de recherches mathématiques (CRM) in June 2023.