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math.QA2015
On monoidal autoequivalences of the category of Yetter-Drinfeld modules over a group: The lazy case
Simon Lentner, Jan Priel
An interesting open question is to determine the group of monoidal autoequivalences of the category of Yetter-Drinfeld modules over a finite group , or equivalently the group of…
math.QA2015
A decomposition of the Brauer-Picard group of the representation category of a finite group
Simon Lentner, Jan Priel
We present an approach of calculating the group of braided autoequivalences of the category of representations of the Drinfeld double of a finite dimensional Hopf algebra and t…
math.QA2015
A simplicial complex of Nichols algebras
Michael Cuntz, Simon Lentner
We translate the concept of restriction of an arrangement in terms of Hopf algebras. In consequence, every Nichols algebra gives rise to a simplicial complex decorated by Nichols a…