Program

1. Luna slice theorem and related results, by Jean-Marc Drezet (Institut de mathematiques, CNRS). Notes: article Luna's slice theorem and applications available as a postscript file.
2. Geometric quotients, by Andrzej Bialynicki-Birula and Joanna Swiecicka (Warsaw University). Notes: article Good quotients of reductive group actions - combinatorics in projective spaces by Joanna Swiecicka available as a postscript file.
3. Quotients by grupoids and stacks, by Charles Walter (Universite de Nice).
4. Linearisation problems, by Mariusz Koras (Warsaw University). Notes: article by Mariusz Koras and Peter Russell available as a postscript file.
5. Embeddings into toric varieties and categorical quotients, by Annette A'Campo-Neunen and Juergen Hausen (Konstanz University). Notes: article Toric invariant theory available as a postscript file.