Rigidity of the Minimal Grope Group
Rigidity of two-dimensional Coxeter groups
Rigidity property of diagram groups
Rigidity results for certain 3-dimensional singular spaces and their fundamental groups
Rips construction and Kazhdan property (T)
Rips Induction: Index of the dual lamination of an $\R$-tree
Root systems for asymmetric geometric representations of Coxeter groups
Rooted trees, strong cofinality and ample generics
Rotating rationally
Rough ends of infinite primitive groups
Roughness in Cayley Graphs