May 27 - June 7, 2002
William Casselman (UBC) & Friedrich Knop (Rutgers)
Lecture room 6214 (6th floor)
MONDAY,
MAY 27
08:30
- 09:30 Registration (Room
5345) and Coffee (Room 6245)
09:00
- 09:15 Opening Address
09:15
- 10:15 J. Stembridge
"Practical algorithms for Weyl characters I"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 F. du Cloux
"Computing Kazhdan-Lusztig polynomials for arbitrary
Coxeter groups"
15:00
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 G. Lusztig
(Chaire Aisenstadt 2001-2002)
"Homomorphisms of the icosahedral group into reductive
groups"
17:00 Reception
TUESDAY,
MAY 28
09:15
- 10:15 M. van
Leeuwen
"The use of combinatorial objects in computational Lie
theory"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 M. Noumi
"Tropical Robinson-Schensted-Knuth correspondence and
birational Weyl group
actions"
15:00
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 A. Zelevinski
"Y-systems and generalized associahedra"
WEDNESDAY,
MAY 29
09:15
- 10:15 J. Stembridge
"Practical algorithms for Weyl characters II"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 D.A. Vogan
"Complementary series and Weyl group representations"
14:15
- 15:15 R. Bedard
"Rational smoothness of varieties of representations
of quivers of type $A_n$"
15:15
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 G. Lusztig
(Chaire Aisenstadt 2001-2002)
"Hecke algebras with unequal parameters I"
THURSDAY,
MAY 30
09:15
- 10:15 B. Casselman
"Patterns in W-graphs"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 J.F. van Diejen
"Determinantal Construction of Orthogonal Polynomials
Associated with Root Systems"
14:15
- 15:15 D.E. Taylor
"Computation with groups of Lie type"
15:15
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 R.B. Howlett
"Inducing W-graphs"
FRIDAY,
MAY 31
09:15
- 10:15 J. Stembridge
"Practical algorithms for Weyl characters III"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 M. Geck
"Computing character values and Schur indices of finite
groups of Lie type"
15:00
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 G. Lusztig
(Chaire Aisenstadt 2001-2002)
"Hecke algebras with unequal parameters II"
MONDAY,
JUNE 3
09:15
- 10:15 M. Geck
"Computing with Coxeter groups and groups of Lie type
in GAP and CHEVIE: an introduction I"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 A. Ram
"Noncrystallographic Springer correspondences"
15:00
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 G. Lusztig
(Chaire Aisenstadt 2001-2002)
"Hecke algebras with unequal parameters III"
TUESDAY,
JUNE 4
09:15
- 10:15 M. Brion
"Positivity in Schubert calculus"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 T. Braden
"Torus actions and singularities of Schubert varieties"
15:00
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 E.M. Opdam
"The Schwartz completion of the Hecke algebra"
WEDNESDAY,
JUNE 5
09:15
- 10:15 M. Geck
"Computing with Coxeter groups and groups of Lie type
in GAP and CHEVIE: an introduction II"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 G. Warrington
"Properties of the Betti numbers of Schubert varieties"
14:15
- 15:15 Y.B. Sanderson
TBA
15:15
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 G. Lusztig
(Chaire Aisenstadt 2001-2002)
"Hecke algebras with unequal parameters IV"
THURSDAY,
JUNE 6
09:15
- 10:15 G.J. Heckman
"The moduli space of rational elliptic surfaces"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 A.G. Helminck
"Algorithms for symmetric varieties"
14:15
- 15:15 F. Knop
TBA
15:15
- 16:00 Coffee Break (Room
6245)
16:00
- 17:00 T.A. Springer
"Kazhdan-Lusztig polynomials coming from a group
compactification"
FRIDAY,
JUNE 7
09:15
- 10:15 P. Trapa
"Using real groups to make real computations in category
$\mathcal{O}$"
10:15
- 10:45 Coffee Break (Room
6245)
10:45
- 11:45 M.J. Dyer
"Multiplicity one criterion for category O in prime
characteristic"
14:15
- 15:15 Problems discussion
15:15 Coffee
Break (Room 6245)