学术报告（梁灏 12.5）

摘要： Using ideas in geometric group theory, Sela build MR-diagrams to understand the structure of the collection of all homomorphisms from a finitely generated group G to a free group F. This work is genralized to hyperbolic groups, torsion free relative hyperbolic groups with abelian parabolics and RAAG. We show that MR-diagrams also exist for central extension of torsion free hyperbolic groups.