IBP-Litp
1994/74:
Rapport de Recherche Litp /
Litp research reports
17 pages - Décembre/December 1994 -
Document en anglais.
PostScript : Ko /Kb
Titre / Title: Crystal graphs and q-analogues of weight multiplicities for the root system An
Abstract : We give an expression of the q-analogues of the multiplicities of weights in irreducible SL n+1-modules in terms of the geometry of the crystal graph attached to the correspondingU q (SL n+1-modules. As an application,we describe multivariate polynomial analogues of the multiplicities of the zero weight, refining Kostant's generalized exponents.
Publications internes Litp 1994 / Litp research reports 1994