most citedExtending lazy 2-cocycles on Hopf algebras and lifting projective representations afforded by them

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math.RT2004

Cocycle twisting of E(n)-module algebras and applications to the Brauer group

G. Carnovale, J. Cuadra

We classify the orbits of coquasi-triangular structures for the Hopf algebra E(n) under the action of lazy cocycles and the Hopf automorphism group. This is applied to detect subgr…