63 citations · 83 across the 4 of their papers we have counts for
Showing 2004 · math.GRShow all
2 papers · 2 filters
math.GR2004
Core and intersection number for group actions on trees
Vincent Guirardel
We present the construction of some kind of "convex core" for the product of two actions of a group on -trees. This geometric construction allows to generalize and unify the…
math.GR2004★ 63 cited
Limit groups as limits of free groups: compactifying the set of free groups
Christophe Champetier, Vincent Guirardel
We give a topological framework for the study of Sela's limit groups: limit groups are limits of free groups in a compact space of marked groups. Many results get a natural interpr…