Group Theory / Lie Theory Seminar F04:

This is a weekly seminar, meeting Mondays 4:30pm in 4088 EH during the academic year (early September through mid April).

For information, contact one of the GTLT regulars, such as

Robert Griess (rlg@umich.edu) or Gopal Prasad (gprasad@umich.edu) or Stephen DeBacker (smdbackr@umich.edu).

• Schedule for F04
• 20 September:
• 27 September:
• 4 October:
• 11 October:
• 18 October: No Meeting (UM holiday)
• 25 October:
• 1 November: Arvind Nair (Tata Institute and UM) "Subvarieties of modular varieties and intersection cohomology"
• Abstract: A modular variety is the quotient of the symmetric domain of a Lie group G by an arithmetic group of automorphisms. A subgroup H of G also giving a symmetric domain gives a subvariety of the modular variety.
  I will discuss results about their cycle classes and some applications to restriction maps in cohomology. The emphasis will be on noncompact modular varieties, where various compactifications and intersection cohomology play a role.
• 8 November: Gopal Prasad (UM) "Semi-simple Lie groups and some (transcendental) number theory".Abstract: I will describe how Zariski-dense subgroups of semi-simple Lie groups arise in geometry and arithmetic and how number theoretic considerations can be used to solve interesting problems about them.
• 15 November:
• 22 November: Roger Howe (Yale)
• 29 November: Andrei Zelevinsky (Northeastern)
• 6 December:
• GTLT schedule for Winter 05
  • 10 January: no meeting
  • 17 January: no meeting
  • 24 January: Herbert Abels (Bielefeld)
  • 31 January: David Gluck (Wayne State)
  • 7 February: Varshavsky?
  • 14 February: ?
  • 21 February: Yu
  • 28 February no meeting :
  • 7 March: ?
  • 14 March: Sai-Kee Yeung
  • 21 March: Chongying Dong (UCSC)
  • 28 March: Richard Weiss (Tufts)
  • 4 April: ?
  • 11 April: ?
  • 18 April: ?
  • Schedules from past years
  • List of past speakers, starting ?
  • Related seminar and meeting links and eaddresses.