BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Finite subgroups of the Nottingham group and Katz-Gabber covers - 
 Peter Symonds (Manchester)
DTSTART:20131120T163000Z
DTEND:20131120T173000Z
UID:TALK48479@talks.cam.ac.uk
CONTACT:Christopher Brookes
DESCRIPTION:We consider finite subgroups of the Nottingham group (i.e. pow
 er series over a field k of finite characteristic with substitution as gro
 up operation) and\nshow how they can be realised as automorphisms of a smo
 oth algebraic curve over k. \n\nAs well as giving us a geometric way of in
 vestigating these groups\, there are some surprising consequences. For exa
 mple\, every such group is conjugate to one for which every element has an
  explicit power series\, even though we are unable to write them down in n
 early all cases.\n
LOCATION:MR12
END:VEVENT
END:VCALENDAR