Lifting via cocycle deformation (1212.5279v2)

Published 20 Dec 2012 in math.QA and math.RA

Abstract: We develop a strategy to compute all liftings of a Nichols algebra over a finite dimensional cosemisimple Hopf algebra. We produce them as cocycle deformations of the bosonization of these two. In parallel, we study the shape of any such lifting.

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