2021
DOI: 10.5802/ambp.393
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On the Hopf algebra structure of the Lusztig quantum divided power algebras

Abstract: We study the Hopf algebra structure of Lusztig's quantum groups. First we show that the zero part is the tensor product of the group algebra of a finite abelian group with the enveloping algebra of an abelian Lie algebra. Second we build them from the plus, minus and zero parts by means of suitable actions and coactions within the formalism presented by Sommerhäuser to describe triangular decompositions. Sur la structure d'algèbre de Hopf des algèbres de puissances divisées quantiques de Lusztig Résumé Nous ét… Show more

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