H.-J. Schneider

  1. Right coideal subalgebras of Nichols algebras and the Duflo order on the Weyl groupoid.

    Authors: I. Heckenberger, H.-J. Schneider
    Subjects: Quantum Algebra
    Abstract

    We study graded right coideal subalgebras of Nichols algebras of semisimple
    Yetter-Drinfeld modules. Assuming that the Yetter-Drinfeld module admits all
    reflections and the Nichols algebra is decomposable, we construct an injective
    order preserving and order reflecting map between morphisms of the Weyl
    groupoid and graded right coideal subalgebras of the Nichols algebra. Here
    morphisms are ordered with respect to right Duflo order and right coideal
    subalgebras are ordered with respect to inclusion.

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