Seminar series
Date
Wed, 11 Feb 2015
Time
16:00 -
17:00
Location
C1
Speaker
Robert Kropholler
Organisation
Oxford
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