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SUMMARY:A Rational Hilbert-Mumford Theorem - Michael Bate\, University of 
 York
DTSTART:20140507T154500Z
DTEND:20140507T164500Z
UID:TALK51760@talks.cam.ac.uk
CONTACT:David Stewart
DESCRIPTION:When a group acts on a topological space\, it is often useful 
 to be able to find the closed orbits for the action. If the group is algeb
 raic and the space is an affine variety\, then the Hilbert-Mumford Theorem
  is very helpful tool for doing this\, but it only works in certain settin
 gs. In this talk I'll present a new version of the theorem which works mor
 e widely and I'll illustrate it with some examples from linear algebra. Th
 e ideas behind the new result form part of a wider programme of developing
  "rationality" tools in Geometric Invariant Theory\, and I will also explo
 re this if I have time.\n
LOCATION:MR12
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