2 papers
math.GR2005
Automorphism groups of free groups, surface groups and free abelian groups
Martin R Bridson, Karen Vogtmann
The group of 2-by-2 matrices with integer entries and determinant can be identified either with the group of outer automorphisms of a rank two free group or with the grou…
math.GR2002
Homomorphisms from automorphism groups of free groups
Martin R Bridson, Karen Vogtmann
The automorphism group of a finitely generated free group is the normal closure of a single element of order 2. If is less than then a homomorphism c…