Geodesic
Identities for Poincaré Polynomials via Kostant Cascades
Journal of Lie theory, Tome 30 (2020) no. 4, pp. 1131-116
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We propose and prove an identity relating the Poincaré polynomials of stabilizer subgroups of the affine Weyl group and of the corresponding stabilizer subgroups of the Weyl group.
Classification : 20F55, 17B22
Mots-clés : Affine Weyl Group, Poincaré polynomial 
@article{JLT_2020_30_4_JLT_2020_30_4_a11,
     author = {J. Ellegaard Andersen and J. C. Jantzen and D. Pei},
     title = {Identities for {Poincar\~A{\textcopyright}} {Polynomials} via {Kostant} {Cascades}},
     journal = {Journal of Lie theory},
     pages = {1131--116},
     year = {2020},
     volume = {30},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/JLT_2020_30_4_JLT_2020_30_4_a11/}
}
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J. Ellegaard Andersen; J. C. Jantzen; D. Pei. Identities for Poincaré Polynomials via Kostant Cascades. Journal of Lie theory, Tome 30 (2020) no. 4, pp. 1131-116. http://geodesic.mathdoc.fr/item/JLT_2020_30_4_JLT_2020_30_4_a11/