Groups and algebras
Jussieu salle 101 couloir 15-16 (1er étage)4 place JussieuTo every group G is associated an associative algebra, namely its group ring kG. Which (geometric) properties are reflected in (algebraic) properties of kG? I will survey some results and conjectures in this area, concentrating on specific examples: growth, amenability, torsion, and filtrations.