2 papers
math.QA2022
Hopf cocycles associated to pointed and copointed deformations over S3
Agustin Garcia Iglesias, Jose Ignacio Sanchez
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…
math.QA2021
On the computation of Hopf 2-cocycles, with an example of diagonal type
Agustín García Iglesias, José Ignacio Sánchez
We present a framework for the computation of the Hopf 2-cocycles involved in the deformations of Nichols algebras over semisimple Hopf algebras. We write down a recurrence formula…