most citedWhen is a cleft extension Azumaya?

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math.RT2005

The Brauer group of modified supergroup algebras

Giovanna Carnovale

The computation of the Brauer group BM of modified supergroup algebras is perfomed, yielding, in particular, the computation of the Brauer group of all finite-dimensional triangula…

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…