2009/01/05 by Nicolas Jacon, Jacon, Nicolas, Cédric Lecouvey +1
Mathematics · #05E10 #17B37 #20C08 #Combinatorics (math.CO) #FOS: Mathematics #Quantum Algebra (math.QA) #Representation Theory (math.RT) #math.CO #math.QA #math.RT #msc:05E10 #msc:17B37 #msc:20C08
paper · pdf · doi:10.48550/arxiv.0901.0443
24 pages, to appear in Pacific J. Math
arxiv created 2009/04/22 · arxiv updated 2009/12/01
We first describe how the Kashiwara involution on crystals of affine type A is encoded by the combinatorics of aperiodic multisegments. This yields a simple relation between this involution and the Zelevinsky involution on the set of simple modules for the affine Hecke algebras. We then give efficient procedures for computing these involutions. Remarkably, these procedures do not use the underlying crystal structure. They also permit to match explicitly the Ginzburg and Ariki parametrizations of the simple modules associated to affine and cyclotomic Hecke algebras, respectively .