Subgroups of Aut($F_n$) and actions on CAT(0) spaces

11 February 2015
Robert Kropholler

I will look at some decidability questions for subgroups of Aut($F_n$) for general $n$. I will then discuss semisimple actions of Aut($F_n$) on complete CAT(0) spaces proving that the Nielsen moves will act elliptically. I will also look at proving Aut($F_3$) is large and if time permits discuss the fact that Aut($F_n$) is not Kähler

  • Junior Topology and Group Theory Seminar