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Organizers |
Induced W-graphs
by
Yunchuan Yin
School of Mathematics and Statistics, University of Sydney, N.S.W.2006, Australia
Coauthors: R.Howlett
Let H be the Hecke algebra associated with a Coxeter group W. Many interesting H-modules can be described using the concept of a W-graph, as introduced in the influential paper [KL] of Kazhdan and Lusztig. In particular, Kazhdan and Lusztig showed that the regular representation of H has an associated W-graph. In this presentation, it is shown that if WJ is a parabolic subgroup of W and V is a module for the corresponding Hecke algebra HJ, then a WJ-graph structure for V gives rise to a W-graph structure for the induced module HÄHJV. In the case that WJ is the identity subgroup and V has dimension 1, the construction coincides with that given by Kazhdan and Lusztig for the regular representation, while for arbitrary J and V of dimension 1 it coincides with constructions given by Couillens and Deodhar. This is the joint work with R.Howlett.
Date received: July 28, 2004
Copyright © 2004 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # caoh-30.