%0 Journal Article
%T Scott and Swarup's regular neighbourhood as a tree of cylinders
%A Vincent Guirardel
%A Gilbert Levitt
%J Mathematics
%D 2008
%I arXiv
%X Let G be a finitely presented group. Scott and Swarup have constructed a canonical splitting of G which encloses all almost invariant sets over virtually polycyclic subgroups of a given length. We give an alternative construction of this regular neighbourhood, by showing that it is the tree of cylinders of a JSJ splitting.
%U http://arxiv.org/abs/0811.2389v1