Heather Armstrong, Bradley Forrest, Karen Vogtmann
Published 2007-01-31, updated 2007-09-05Version 4
We study the action of the group Aut(F_n) of automorphisms of a finitely generated free group on the degree 2 subcomplex of the spine of Auter space. Hatcher and Vogtmann showed that this subcomplex is simply connected, and we use the method described by K. S. Brown to deduce a new presentation of Aut(F_n).
Comments: Missing relation added. Final version to appear in Journal of Group Theory
A combinatorial proof of the Degree Theorem in Auter space
On automorphisms of finite $p$-groups
The Algebra of Strand Splitting. II. A Presentation for the Braid Group on One Strand
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