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SUMMARY:Cesar Galindo (Universidad de los Andes)
DTSTART:20250521T120000Z
DTEND:20250521T130000Z
DTSTAMP:20260423T052623Z
UID:EQuAL/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/EQuAL/40/">Z
 estings for Hopf algebras</a>\nby Cesar Galindo (Universidad de los Andes)
  as part of European Quantum Algebra Lectures (EQuAL)\n\n\nAbstract\nIn th
 is talk\, I will present a framework for "zestings" of Hopf algebras\, a t
 echnique we hve extended from fusion categories to general tensor categori
 es. I will provide a detailed translation of the categorical zesting const
 ruction into explicit Hopf algebraic terms. We show how associative zestin
 g of a Hopf algebra's comodule category yields a coquasi-Hopf algebra\, wh
 ere the comodule category of this new structure is precisely the zested ca
 tegory.\n\nFurthermore\, we present concrete formulas for constructing zes
 tings of pointed Hopf algebras\, particularly for cyclic group gradings\, 
 encompassing both diagonal and non-diagonal braided vector spaces. Finally
 \, I will illustrate this construction with new examples of coquasi-Hopf a
 lgebras\, including those derived from Nichols algebras of super type A(1|
 2) and the Fomin-Kirillov algebra in three variables.\n\nThis is joint wor
 k with Ivan Angiono and Giovanny Mora.\n
LOCATION:https://researchseminars.org/talk/EQuAL/40/
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