Hopf cocycles associated to pointed and copointed deformations over S3

Published 30 Mar 2022 in math.QA | (2203.16342v2)

Abstract: We present an explicit description of the Hopf 2-cocycles involved in the classification of finite dimensional pointed and copointed Hopf algebras over the symmetric group on three letters. We determine which cocycles are exponentials of Hochschild 2-cocycles and which ones are pure.

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